A failed weld on a valve casing called a trunnion caused the gas leak that forced the plant to close on July 1, he said.
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A History of Warfare. Vintage. Alternatively, a trunnion is a shaft that positions and supports a tilting plate. This is a misnomer, as in reality it is a cradle for the true trunnion. Trunnion positions saw table and provides a pivot point.
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In mechanical engineering (see the trunnion bearing section below), it is one part of a rotating joint where a shaft (the trunnion) is inserted into (and turns inside) a full or partial cylinder.
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The rear trunnion itself is held to the stamped receiver with four rivets (two on each side). Under folding models instead have a U-shaped rear trunnion that reinforces the locking arms and is held to the receiver with six rivets (see Variants for more info).
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These bridges are of several different types, including trunnion bascule, Scherzer rolling lift, swing bridges, and vertical lift bridges.
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The md 65's rear trunnion is also different compared to the standard AKMS's version, differing in that it only has the two locking holes on the left side, has only two pairs of rivets near the back of the trunnion and a bar connecting the two sides of the trunnion at the front. The navy is the only remaining large scale operator of the md. 65 because of the weight of the metal underfolding stock. The fire selector markings are as follows, from top to bottom: Domestic—S, FA, FF. Export—S, A, R.
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The Zastava M70 () is an assault rifle developed and produced by Zastava Arms in Serbia (formerly Yugoslavia). The design of the M70 was based on the Soviet AKM rifle and it became the standard issue weapon in the Yugoslav People's Army in 1970. This weapon is also available as the ZPAPM70 (1.0 stamped receiver), ZPAPM70 Classic (1.5mm stamped receiver with bulged RPK style front trunnion, chrome lined bore), O-PAP (1.5mm stamped receiver with bulged RPK style front trunnion) or N-PAP (1.0mm stamped receiver, standard AKM style front trunnion) in the United States without select fire capabilities.
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The South Front Street Bridge is a Strauss trunnion bascule bridge along the designs of the Strauss Bascule Bridge Company, headed by Joseph Strauss. Construction began in 1920; it opened to traffic in 1922. It is a heel trunnion, which is a variation on the design, and is the only remaining road-carrying bridge of its type in New Jersey. The bridge’s substructure and counterweight are made of concrete.
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The Mark 4s were Nos. 22 – 32, 38 – 50, and 52 – 83. The original Mark 4 Mod 0 guns were identical to Mark 3 Mod 1 guns with the trunnion hoop and elevating band removed and with the threads formerly under the trunnion hoop being continued to the rear of the gun. This allowed these guns to be screwed into the sleeve of a two-gun turret mount.
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The mass is mounted on two trunnion roller bearings and a large saddle, which not only connects it with the turret bu also blocks off the turret opening.
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During the spacewalk, he completed the replacement of the Nitrogen Tank Assembly on the P1 truss of the International Space Station, and installed trunnion covers on the Columbus module.
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A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure valves (say, above 10 cm and 40 bars). A floating ball valve is one where the ball is not held in place by a trunnion. In normal operation, this will cause the ball to float downstream slightly. This causes the seating mechanism to compress under the ball pressing against it.
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The Jackson Boulevard Bridge is a Pratt deck truss, fixed-trunnion, bascule bridge that spans the Chicago River at Jackson Boulevard in downtown Chicago. It was built in 1915 and is 273 feet in length.
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In 1915 Britain acquired a number of "autocanon de 75 mm mle 1913" anti-aircraft guns, as a stopgap measure while it developed its own anti-aircraft alternatives. They were used in the defence of Britain, usually mounted on de Dion motor lorries using the French mounting which the British referred to as the "Breech Trunnion". Britain also purchased a number of the standard 75 mm guns and adapted them for AA use using a Coventry Ordnance Works mounting, the "Centre Trunnion".Hogg & Thurston 1972, Page 48.
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When the gate is rotated, the rush of water passing under the gate helps to open and close the gate. The rounded face, long radial arms and trunnion bearings allow it to close with less effort than a flat gate. Tainter gates are usually controlled from above with a chain/gearbox/electric motor assembly. A critical factor in Tainter gate design is the amount of stress transferred from the skinplate through the radial arms and to the trunnion, with calculations pertaining to the resulting friction encountered when raising or lowering the gate.
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The barrel also features a folding bipod mounted near the muzzle, and a front sight base with a lug that limits the bipod's rotation around the axis of the barrel. The barrel has a threaded muzzle, enabling the use of muzzle devices such as flash hiders, compensators, and blank-firing adapters. When a muzzle device is not being used, the threads on the muzzle can be covered by a thread protector. The barrel is pinned to the receiver in a modified trunnion, reinforced by ribbing, and is slightly wider than the trunnion used on the standard AKM type rifles.
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The RPKS ("S" — Skladnoy (Russian: складной) means "folding" [stock]) is a variant of the RPK with a side-folding wooden stock was intended primarily for the air assault infantry. Changes to the design of the RPKS are limited only to the shoulder stock mounting, at the rear of the receiver. It uses a trunnion riveted to both receiver walls that has a socket and tang, allowing the stock to hinge on a pivot pin. The trunnion has a cut-out on the right side which is designed to engage the stock catch and lock it in place when folded.
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The AKM has a barrel with a chrome-lined bore and four right-hand grooves at a 240 mm (1 in 9.45 in) or 31.5 calibers rifling twist rate. The forward barrel trunnion has a non-threaded socket for the barrel and a transverse hole for a pin that secures the barrel in place. The AKM's barrel is installed in the forward trunnion and pinned (as opposed to the AK-47, which has a one piece receiver with integral trunnions and a barrel that is screwed-in). Additionally the barrel has horizontal guide slots that help align and secure the handguards in place.
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The receiver is a heavy 1.5mm RPK type with a bulged front trunnion and an optics rail. The barrel is of medium profile and not chrome lined. The bolt and bolt carrier are polished. It came with a muzzle nut and threaded in M14-1.0LH.
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The straight sides of the pie shape, the trunnion arms, extend back from each end of the cylinder section and meet at a trunnion which serves as a pivot point when the gate rotates. Pressure forces on a submerged body act perpendicular to the body's surface. The design of the Tainter gate results in every pressure force acting through the centre of the imaginary circle of which the gate is a section, so that all resulting pressure force acts through the pivot point of the gate, making construction and design easier. When a Tainter gate is closed, water bears on the convex (upstream) side.
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The Modello 1893 version was a trunnion-less gun, while the Modello 1899 had trunnions. Italian single gun mounts were electrically powered, while twin mounts were hydraulically powered. In addition to guns imported from England licensed versions were produced by the (Armstrong factory) at Pozzuoli, Italy.
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The trunnions are the protrusions from the side of the barrel that rest on the carriage. A trunnion (from Old French "trognon", trunk) is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development.Keegan, John (1994).
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It fired high-explosive and gas shells. For transport two wheels from the Gebirgsgechütz M 99 were used. The M 17 version of this weapon had an elevation screw with a double thread and reinforced trunnion bearings. It's unclear how the M 16 differed from the earlier model.
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Fifty-pounder rifle: these guns were typical Dahlgren rifles—iron with bronze trunnions and trunnion bands. They were apparently a popular design, although by the end of the war it had been supplanted by the 60-pounder Parrott rifle, which continued in service after the American Civil War.
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Common types include clevises, trunnion mounts and spherical bearings. Because these mounts allow a cylinder to pivot, they should be used with rod-end attachments that also pivot. Clevis mounts can be used in any orientation and are generally recommended for short strokes and small- to medium-bore cylinders.
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Schematic of Kinzie Street railroad bridge The bridge is designed to carry two railroad tracks across the river. Its superstructure consists of two spans constructed by the Strauss Bascule & Concrete Bridge Company: a plate-girder span on the west bank of the river and the movable main span that rests on the east trunnion pier. The size and weight of the main span, which, when completed would be world's longest and heaviest bascule span, required the trunnion pier to be constructed on foundations that extend to the bedrock below the river bed. To achieve this caissons were sunk to a depth of below the river bed and then diameter wells were sunk the remaining .
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Whig 20070720 - Kingston , Ontario waterfront . K7waterfront.org. Retrieved 2013-07-12 Three bridges are incorporated into the causeway, the centre one being a Strauss trunnion bascule lift bridgeCanadian Environmental Assessment Archives - La Salle Causeway Bascule Lift Bridge Painting Project, Kingston, Ontario. Ceaa-acee.gc.ca (2012-12-05). Retrieved on 2013-07-12.
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It is designated Bridge No. 327 by the state Department of Transportation. The Washington Bridge is the longest drawbridge on the Boston Post Road. It is a steel trunnion-bearing bascule drawbridge. in length by in width, featuring two lanes in each direction for automotive traffic and a sidewalk for pedestrians.
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The Dorset Avenue Bridge is a vehicular bridge in Ventnor City, Atlantic County, New Jersey, south of in Atlantic City. The double-leaf Strauss trunnion bascule drawbridge spans the Intracoastal Waterway (ICW) Inside Thorofare (MP 72.1) and carries CR 629 (MP 3.2) in Ventnor Heights and St Leonard's Tract on Absecon Island.
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The main function of the cap is to enclose the pressure chamber at one end. The cap is connected to the body by means of welding, threading, bolts, or tie rod. Caps also perform as cylinder mounting components [cap flange, cap trunnion, cap clevis]. Cap size is determined based on the bending stress.
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Intriguingly, the M70 always used the AKM style bayonets with lug under the gas block even on milled versions. Likewise, the barrel is hammer forged and was never chrome-lined, making it a little more accurate than a standard AKM, but at the cost of increased susceptibility to corrosion and shorter barrel life. The lack of chrome lining is unique for an AK and consistent with other Zastava built rifles of Soviet design (such as the Yugoslavian M59 or M59/66). The fixed stock versions have a unique rear trunnion and stock attachment method, with the two rivets in a vertical strait line and a large bolt passing through the majority of the stock and connecting it to the rear trunnion.
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By June 30, 1929, only 60 percent of the bascule had been fabricated. Only the trunnion posts for the leaves and the counterweight truss for the east leaf had actually been assembled.Office of Public Buildings and Public Parks of the National Capital, 1929, p. 66. After nearly another year passed, the bascule neared completion.
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The drive cam is driven by the camshaft. This pushes the rocker arm up and down about the trunnion pin or rocker shaft. Friction may be reduced at the point of contact with the valve stem by a roller tip. A similar arrangement transfers the motion via another roller tip to a second rocker arm.
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The third Johnson Street Bridge was built as two adjacent, independent, heel trunnion bascule bridges, a three-lane road span of , and a single-track rail span of . The approaches were fixed steel girders; the east and the west . Counterweights were of hollow concrete weighing . Operating struts were moved by pinions powered by electric motors.
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The Times noted some trouble had been taken to dampen engine vibration. The engine and separate gearbox were on a subframe. The engine was flexibly held by two sets of enclosed springs at the front end and at the back by semi-circular steel trunnion blocks. These blocks were secured by spring- loaded bolts.
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If not, then a collimation error exists. Index error, horizontal-axis error (trunnion-axis error) and collimation error are regularly determined by calibration and are removed by mechanical adjustment. Their existence is taken into account in the choice of measurement procedure in order to eliminate their effect on the measurement results of the theodolite.
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These arrangements lasted for most of the 20th century until robust, reliable and cost-effectively accurate gyroscopes provided a means of pointing gun or launcher in any required azimuth and elevation, thereby enabling indirect fire without using external aiming points. These devices use gyros in all three axes to determine current elevation, azimuth and trunnion tilt.
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Thirty-pounder rifle: these guns were iron with bronze trunnions and trunnion bands. They were cast at the Fort Pitt Foundry and the Washington Navy Yard. In February 1862, Dahlgren recommended that the first 13 cast at Fort Pitt be withdrawn because the iron was inferior. One 30-pounder rifle was mounted on USS Harriet Lane.
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Instead, it is held closed by the forward trunnion pin which is longer on the Bizon than on its AKS-74 predecessors. The extended length of the pin allows it to catch the folding skeleton stock. The pistol grip is identical to the grip on the AK-100 series and is made of a black fiberglass-reinforced polyamide.
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Two main bearings are bolted to the mounting plate on the roof of the tank turret to support the range finder on steel radial ball bearings. A parallel gun linkage between the gun trunnion and the range finder assures that the line of sight of the range finder reproduces the exact motion of the gun in elevation. A .
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After cooling the gun the machining process began. The bore was bored out to proper size, the exterior was turned smooth, the trunnions were turned on a trunnion lathe, and a vent was drilled. Columbiads were not the only guns cast using Rodman's method. Dahlgren XV-inch shell guns for the U.S. Navy were also hollow cast.
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Over 350 3-inch ordnance rifles still existed in 2004, many of them in National Military Parks. Guns with registry numbers from 1 to 235 do not have a patent stamp. Guns numbered from 236 to 543 were inspected between 20 February and 25 November 1862 and have the patent stamp "Patented Dec. 9, 1862" on the left trunnion.
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The Model 1887 was constructed of an A tube and three layers of reinforcing hoops that extended to the muzzle. There was also an outer jacket, a trunnion and a C hoop with a breech ring. The guns had a three-motion Interrupted screw breech and electric firing similar to early British 6 inch QF guns of the period.
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The Mini-Beryl's design combines features from both the wz. 1989 Onyks carbine and the wz. 1996 Beryl rifle; the principal components that were modified include the barrel, barrel trunnion, upper and lower handguards, muzzle device and magazine. The weapon's method of operation, the rotary bolt locking mechanism and ammunition are identical to those of the wz.
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Second (rebuilt) Madison Bridge at Portland, Oregon, showing swing span Opened in January 1891, the first Madison Street Bridge was a swing bridge which pivoted on a large central trunnion mounted on a piling structure in the river. The bridge was poorly designed. At the time of the accident, the bridge was owned by the City of Portland.
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It is built around a stamped steel receiver similar to that of the RPK light machine gun; having a wider forward section enabling a strengthened, more substantial front trunnion. The PSL's operation is the same long stroke piston action of the Kalashnikov family of weapons. Its appearance is similar to the Dragunov sniper rifle yet not one single part interchanges between the rifles.
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Great Lakes Dredge and Dock Company was the contractor for the substructure, and the Ketler–Elliot Company was the contractor for the superstructure. Original electrical equipment was installed by C. H. Norwood. The bridge is an example of a trunnion bascule bridge, with each half of the roadway is cantilevered out from shore abutments. The bridge is extremely efficient to operate.
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A settlement was reached in August 1905, and construction for the new North Avenue Bridge began in early 1906. Ericson was removed from the Public Works' bridge division and control over bridge design was passed to a separate administrative entity headed by Thomas G. Pihlfeldt. However, under Pihlfeldt's guidance the city continued to express preference for the trunnion bascule design.
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This variant also uses the AK-47 rear trunnion, and thus the siderail is lengthened. It uses either a "bird cage" flash suppressor, or a flash hider (designed for Special Forces). The design also incorporates an upward-curved charging handle, a wire side-folding stock (based on the East German design, but offset slightly to the left), and a traditional vertical handgrip. The md.
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A steerable front truck was installed just behind the trunnion box member, while the turntable surmounted a two-axle rear bogie. The steerable front truck was fitted with twin duplex wheels (four tyres), the inner wheels equipped with pneumatic drum brakes. The duplex wheels rode on swinging wishbone axles with transverse semi-elliptical leaf spring suspension. A steering lock was included for use during rear towing.
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The main attribute of a Dobsonian's mount is that it resembles a "gun carriage" configuration with a "rocker box" consisting of a horizontal trunnion style altitude axis and a broadly supported azimuth axis, both making use of material such as plastic, Formica, and Teflon to achieve smooth operation. Many derivative mount designs have kept this basic form while heavily modifying the materials and configuration.
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The bushings for the pivot yoke form two supports against the thrust of firing. At the upper end of the pivot yoke, on either side, trunnion bearings are provided for the cradle trunnions. The shield and shield supports are bolted to the pivot yoke. The opening for the gun in the shield is prolonged underneath to allow for the removal of the piston and springs from the recoil cylinder.
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The FEC Strauss Trunnion Bascule Bridge is a double track railroad bridge spanning the St. Johns River in Jacksonville, Florida. Completed in 1925 by the Florida East Coast Railway, this structure replaced a single-track swing bridge which opened on January 5, 1890. The current structure is a simple truss bridge with plate girder approaches and a bascule lift allowing ships to pass. It is adjacent to the Acosta Bridge.
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Series 2 guns weigh an average of , Series 3 guns weigh , and Series 4 guns weigh . Series 2, 3, and 4 all had 10 rifling grooves of right-hand twist. Various muzzle, trunnion, and breech stampings account for the other differences between Series 1, 2, 3 and 4 guns. The Type 2 14-pounder James rifle measured from muzzle to the end of the knob and from muzzle to base, excluding the knob.
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Production Mark VIII KTTs used a more conventional bronze bush and trunnion shaft pivot for the one-piece rear fork. The first experimental swing-arm machines were raced by the factory in the 1937 season, and introduced as the Mark VIII KTT the next year, for sale to the public.'Velocette; Technical Excellence Exemplified', Ivan Rhodes, 2003 (Motorbooks) The Mark VIII KTT was offered from 1938 - 1950, after which Veloce closed its racing department.
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As with the South Carolina class, these ships were fitted with two 3-inch/50 caliber anti-aircraft (AA) guns in Mark 11 mounts in 1917. The Mark 11 mount was the first 3-inch AA mounting issued by the US Navy. They had a trunnion height of compared to a height of for the pedestal mountings used against surface craft. This allowed them an elevation range between −10 and 85 degrees.
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Inside of the elevated entrance with its hewn-out trunnion ring The ruins of a fortified, double-winged palas and an enceinte (Bering) are visible on the northern side by the old road. Three of the walls, which are well over a metre thick, have survived; the east wall facing the valley has collapsed. The quoins have a clear border (Kantenschlag). One additional wall divides the site into an eastern and western half.
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The Cherry Street Strauss Trunnion Bascule Bridge is a bascule bridge and Warren truss in Toronto, Ontario, Canada. Located in the industrial Port Lands area, it carries Cherry Street over the Toronto Harbour Ship Channel and opens to allow ships to access the channel and the turning basin beyond. There are two bascule bridges on Cherry Street. The other, smaller bridge, crosses the Keating Channel, while this bridge crosses the Ship Channel.
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Mod 0 was very similar to the Mark 3 Mod 2 but with the breech ring lengthened , the trunnion hoop removed and the barrel threaded. Mod 1, No. 155, was of similar construction, but was longer, only 4 hoops, and an experimental breech mechanism. The chamber volume was also increased slightly from to . Mod 2, for Mark 6, 7, and 9 gun mounts, was similar but with cut off the breech end of the gun.
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The G36 employs a large number of lightweight, corrosion-resistant synthetic materials in its design; the receiver housing, stock, trigger group (including the fire control selector and firing mechanism parts), magazine well, handguard and carry handle are all made of a carbon fiber-reinforced polyamide. The receiver has an integrated steel barrel trunnion (with locking recesses) and a nylon 66 steel reinforced receiver.US5513461A - Light-weight automatic rifle. Google.com. Retrieved 2015-7-15.
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Symmetrical bulges on both sides of the front trunnion ensure a proper fit inside the receiver. The RPK also has a slightly longer receiver, by about 20 mm or less. This was done to decrease the fire rate slightly, but not significantly enough to lower it any less than 600 rounds per minute (RPM). The U-shaped receiver is stamped from a smooth sheet of steel compared to the sheet metal receiver used on the standard AKM rifles.
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The structure of the Meillerwagen consisted of the wheeled trailer chassis, and the hydraulic lifting frame. The trailer chassis was a lattice frame of tubular members. It comprised a transverse trunnion box member at the front, from which six longitudinal tube members ran aftward and converged into one large main central tube at the rear; the six longitudinal members were braced vertically and horizontally by smaller-gauge tubes. The rear central tube member supported a large horizontal-plane turntable.
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On June 22, 1922 the steamship Glenaruel collided with the bridge, first hitting the bulkhead and then swerving to hit the span which had been opened to let it pass. The iron structure toppled and was considered irreparable. The destroyed structure was replaced in 1927 with a double leaf bascule bridge. In little more than a year's time, on December 15, 1928, that bridge failed when the east leaf of the bridge and its trunnion fell into the river.
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The 1924 Henry Ford Bridge in the half-closed position as seen in 1994. An animation of the opening and closing sequence for the 1924 Henry Ford Bridge The contract for the bascule bridge was placed by The Los Angeles Board of Harbor Commissioners in 1922. The bridge was designed by Joseph Baermann Strauss and fabricated by the American Bridge Company. It was formed of a pair of trunnion bascule leaves which formed a one span Warren through-truss.
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The Ordnance Department requested four wrought iron guns of caliber on 21 February 1861. The government paid $370 apiece for two of these guns but neither survived. Phoenix Iron Company also produced a few 6-pounders of caliber of which seven survivors are dated 1861 and have Griffen's 1855 patent stamped on one trunnion. On 24 July 1861, General James Wolfe Ripley of the U.S. Army ordered 300 wrought iron rifled cannons from Phoenix Iron Works.
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The receiver of the M70 is 1.5 mm thick, compared to the 1 mm thick receiver of the AKM, making it more rigid. The receiver has a bulge at the front to accommodate an enlarged trunnion similar to a RPK receiver, with the front trunnion rivet configuration likewise resembling a RPK and not an AKM. Much like the other AKs, the M70 experienced changes to other parts between the milled and stamped variants, such as moving the gas relief ports from the tube to the gas block, adding lightening cuts on the bolt and bolt carrier, moving the rear sling swivel from the back of the receiver to the buttstock and omission of the metal ferrules from the lower handguards and pistol grips. It however, like the Type 56, retained many milled features, such as the thicker barrel, front sight shape, bolt and bolt carrier "in the white", smooth dust cover, lack of a pistol grip reinforcement plate on underfolders, forward sling loop on the gas block and blued finish.
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The Canon de 65 mm Modèle 1891 & Modèle 1902 were developed and built by Schneider at the Le Creusot works. The guns were constructed of an A tube, a jacket, a wedge breech block, a locking ring, a trunnion hoop and used fixed quick fire ammunition. The Modèle 1891 & Modèle 1902 had similar dimensions, but the Modèle 1902 fired a slightly heavier projectile at a higher muzzle velocity. Both models are sometimes referred to as 9 pounders in English publications.
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The guns were located in revetments built to trunnion height and laid out in a shallow arc of about 90 degrees close to and easily seen from the Command Post. At the end of World War II all static guns were removed and only the mobile versions retained. Although Australia produced 600 static 3.7 inch guns of the type originally located at Lithgow, only two are known to remain today. Both are located at North Fort on North Head in Sydney.
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Zastava Arms of Yugoslavia originally developed this rifle from its experience in making its M70 rifles (a variant of the AKM with some minor differences from the original), particularly the M76.Tabuk 7.62 mm rifle (Iraq), SNIPER AND SPECIAL PURPOSE RIFLES. Retrieved on August 26, 2008. All of the rifles in the M70 series share what is traditionally considered an RPK style receiver, that is the receiver is made with a thicker gauge of sheet metal formed over a larger and heavier trunnion.
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It was built in the late 1930s and early 1940s as an embankment. Slightly downstream, to the north, the Roosevelt Avenue bridge is a double-deck viaduct completed in 1927. It was originally built as a drawbridge, and was the world's largest fixed-trunnion bascule bridge at its completion, though it is no longer functional. The bridge carries Roosevelt Avenue, as well as the New York City Subway's IRT Flushing Line (), which were extended to Flushing–Main Street in 1928, a year after the bridge's completion.
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Rear wheel drive vehicle, front double wishbone suspension with upper and lower ball joints and tie rod end shown. On modern vehicles, sex joints are the pivot between the wheels and the suspension of an automobile. They are today almost universally used in the front suspension, having replaced the kingpin/linkpin or kingpin/trunnion arrangement, but can also be found in the rear suspension of a few higher-performance autos. Ball joints play a critical role in the safe operation of an automobile's steering and suspension.
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The entire bridge is supported on a concrete substructure. It originally was composed of built-up members as were the trunnion columns, braced counterweight tower, and counterweight linkages that permitted the counterweight to pivot and move parallel to itself during operation of the bridge. The bridge was significantly rehabilitated 1965, when a steel grid deck was installed. Between 1976 and 1979 the bridgeman's shanty was demolished and operating controls for the electric-motor powered span were removed and the bridge was fixed in the closed position.
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The St. Charles Air Line Bridge is a Strauss Trunnion bascule bridge which spans the Chicago River in Chicago, Illinois. Built as part of the St. Charles Air Line Railroad by the American Bridge Company in 1919, the bridge originally had a span of . This bridge held the world record for longest bascule-type span until 1930, when it was shortened to during a relocation as a result of straightening the river channel. The chief design engineer of the original bridge was Leonard O. Hopkins.
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Valve disc A disc or valve member is a movable obstruction inside the stationary body that adjustably restricts flow through the valve. Although traditionally disc-shaped, discs come in various shapes. Depending on the type of valve, a disc can move linearly inside a valve, or rotate on the stem (as in a butterfly valve), or rotate on a hinge or trunnion (as in a check valve). A ball is a round valve member with one or more paths between ports passing through it.
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Young Traveller was a chestnut horse sired by King Fergus out of an unnamed daughter of Young Trunnion. He was bred, and originally owned and trained by John Hutchinson of Shipton, North Yorkshire. Hutchinson began his career as a stable lad before using his earnings in a brief, but lucrative career as a jockey to set himself up as a trainer. He later became one of the leading owners and breeders in the north of England, being associated with many successful horses including Hambletonian and Beningbrough.
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Sepro Tyre Driven Grinding Mills are designed for small and medium capacity grinding applications, specifically small tonnage plants, regrinding mills, reagent prep and lime slaking. Sepro Pneumatic Tyre Driven (PTD) mills provide an alternative to standard trunnion drive systems. The drive consists of multiple gears boxes and electric motors directly connected and controlled through an AC variable frequency drive. Shell supported mills such as the Sepro PTD mills minimize stress on the mill shell by spreading the power drive over the full length of the mill.
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The bike had a prototype sprung frame built under the Bentley and Draper patents. The frame as far back as the gearbox bracket was normal K. Behind this however is a triangulated tubular swinging fork assembly worked in a trunnion bearing. From the rear fork-ends two seta-stays were pivoted and connected to the sprung part of the frame below the saddle by a system of links and spindles incorporating two coil springs. Friction dampers were fitted to these links and there were also two more at the bottom pivots at the fork-ends.
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40-pounder gun on overbank carriage for use in fortifications The original Mk I short barrel of 18 calibres suffered from irregular velocity and hence accuracy, due to incomplete burning of the powder charge, hence only 20 were built. The Mark II of 1874 with barrel lengthened to 22 calibres solved this problem and became the definitive model.Treatise on the Construction and Manufacture of Ordnance in the British Service, 1877, Page 260. The gun consisted of a central toughened steel "A" tube surrounded by wrought-iron coils, with a trunnion ring and cascabel.
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The HX Draw is a bascule bridge carrying the New Jersey Transit Bergen County Line and Pascack Valley Line across the Hackensack River between Secaucus, New Jersey and East Rutherford. The bridge is also known as The Jack-Knife because of its unusual method of opening. Designed by Joseph Strauss and completed in 1911, this bridge is one of the first heel trunnion bascule bridges built in the United States and originally formed part of the Erie Railroad's main line. In 2008, NJ Transit repainted the span in a new coat of black paint.
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The section leader is the first on the right seat and is provided with a day periscope in the forward part of the personnel compartment roof, on the right side. Access to the personnel compartment is by two doors in the rear of the hull. Two hatches over the roof of the vehicle open to the outside. Mounting sockets for the pivot trunnion of an adaptor mount for the MG 42 machine gun are provided on the front, right, left and rear side of the hatch above the personnel compartment.
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Strauss was the designer of the Burnside Bridge (1926) in Portland, Oregon and the Lewis and Clark Bridge (1930) over the Columbia River between Longview, Washington, and Rainier, Oregon. Strauss also worked with the Dominion Bridge Company in building the Cherry Street Strauss Trunnion Bascule Bridge in Toronto, Ontario. in 1912 he designed the HB&T; Railway bascule bridge over Buffalo Bayou in Houston, Texas (now hidden under an Interstate 69 bridge in the shadow of downtown Houston). His design was also exported to Norway where Skansen Bridge is still in daily use.
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March 1919, volume 14, number 1, page 19. In addition to being a trained chemist and perfumer like his father, Frederick was a politician having served as Commissioner of Public Works and City Treasurer during Chicago's formative years. He was well respected for his management of city finances and for actions such as lending the city money from his own account to pay police and firemen before Christmas. Fred Blocki supervised some of the city's great public improvements, including construction of the first fixed trunnion bascule bridge in the United States, the Cortland Street Drawbridge.
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The kit normally contains the cleaning jag to which a piece of cloth material is wrapped around and dipped into cleaning solution. It also contains a pin punch, an assembly pin to hold the trigger, disconnector and rate reducer together while putting these back into the receiver after cleaning the weapon, and a barrel brush. The kit is secured inside the butt stock via a spring-loaded trapdoor in the stock's pressed sheet metal butt cap. The stock is socketed into a stepped shaped rear trunnion with single upper tang and two screws.
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The Norfolk Southern Lake Pontchartrain Bridge is a rolling lift trunnion bridge that carries a single-track of Norfolk Southern rail line over Lake Pontchartrain between Slidell and New Orleans, Louisiana. At long, it is the longest railroad bridge in the United States and the longest rail bridge over water in the world. The Huey P. Long Bridge in nearby Jefferson Parish has sometimes been given that title, but at about , that bridge is considerably shorter than the Norfolk Southern bridge. The bridge is heavily used by Norfolk Southern freight trains.
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A control circuit monitors the coal level in the mill, and controls the speed of the raw coal feeder to maintain it. Maintaining the coal level in the mill offers a built-in capacity cushion of pulverized fuel to take care of short interruptions in the raw coal circuit. The mill is pressurized and the air- tightness is ensured by plenum chambers around the rotating trunnion filled with pressurized seal air. Bleeding seal air from plenum chamber to the mill maintains separation between pulverized fuel in the Mill and the outside atmosphere.
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William Byrd 12\. William Hogarth (The Rake's Progress, Beer Street and Gin Lane) 14\. Paintings by Richard Wilson (Hounslow Heath), Thomas Gainsborough, John Constable, Joseph Wright of Derby, John Martin (Landscape with a Castle), J.M.W. Turner, Samuel Palmer, Ford Madox Brown, James McNeill Whistler (Nocturne: Blue and Gold – Old Battersea Bridge). The Canterbury Tales and the novels Pamela, or Virtue Rewarded (Pamela Andrews, Mr B), The Adventures of Peregrine Pickle (Jack Hatchway, Commodore Trunnion), Tristram Shandy, A Sentimental Journey (Parson Yorick), The Mill on the Floss, Wuthering Heights (Catherine Earnshaw). 16\.
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He exhibited this painting under the pseudonym E. F. Williams, as he was unsure of its reception. “Edmonds was surprised by Sammy the Tailor's warm reception and encouraged by its success to continue to paint." Commodore Trunnion and Jack Hatchway, scene from English novel by Tobias Smollet, "The Adventures of Peregrine Pickle”. c. 1839, Dallas Museum of Art This was followed, among other works, by Dominie Sampson in 1837, the Penny Paper in 1839, Sparking in 1840, Stealing Milk in 1843, Vesuvius and Florence in 1844, Bargaining in 1858, and The New Bonnet in 1859.
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4 bladed hollow mill Hollow milling cutters, more often called simply hollow mills, are essentially "inside-out endmills". They are shaped like a piece of pipe (but with thicker walls), with their cutting edges on the inside surface. They were originally used on used on turret lathes and screw machines as an alternative to turning with a box tool, or on milling machines or drill presses to finish a cylindrical boss (such as a trunnion). Hollow mills can be used on modern CNC lathes and Swiss style machines.
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When stationary in the down position, the centre of mass of the bell and clapper is appreciably below the centreline of the trunnion supports, giving a pendulous effect to the assembly, and this dynamic is controlled by the ringer's rope. The headstock is fitted with a wooden stay, which, in conjunction with a slider, limits maximum rotational movement to a little less than 370 degrees. To the headstock a large wooden wheel is fitted and to which a rope is attached. The rope wraps and unwraps as the bell rotates backwards and forwards.
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The Strauss Heel-trunnion type bridge was designed by former Otis Elevator Company Chief Engineer Thomas Ellis Brown of New York and built in 1920 by the J. E. FitzGerald Construction Company of New London, Connecticut, according to its historical marker. Its movable span is wide, long, weighs , and employs two concrete-filled counterweights. Until 1928, the bridge carried streetcars of the Groton and Stonington Street Railway. It is operated by the Connecticut Department of Transportation and opens for approximately five minutes around 2,200 times per year, carrying an average daily traffic of 11,800.
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The body of the SBe 250 consisted of thin inner and outer steel cases with scrap metal embedded in a layer of concrete between the cases. The nose was formed from a 5 mm (3/16 in) steel dome and there was a single transverse fuze in the rear 1/3 of the bomb. There was also a central TNT exploder which ran through the ammonal explosive filler. The tail was sheet steel with four single braces and there was a removable trunnion band which was used to horizontally suspend the bomb.
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The suspension is by double A-arms, manganese bronze trunnion, coil springs and tube shocks at the front, optional anti-roll bar, and with worm and peg steering. Unlike MGs of the same period, the steering mechanism and linkage have considerable play and friction, which increase with wear. The rear is conventional leaf springs, with solid axle and lever arm dampers, except that the (box) frame rails are slung under the axle. The wheels are 15 inches in diameter and 4.5 inches wide (increased from 4 inches after the first few TR2s), with 48-spoke wire wheels optional.
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The radial T-vent hole on top was plugged, holes in the jacket passing through the trunnion centres were sealed with screwed steel plugs, and the holes in the hood for fitting tangent sights were plugged with white metal alloy. The 3-motion breech was replaced by a single-motion interrupted screw breech, which had an axial T vent running through it into the chamber, designed to take a T friction tube. The new firing mechanism involved a new "push" type T friction tube, which was inserted into the axial breech vent. The crosspiece of the T was positioned pointing upwards.
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The bridge was originally a Strauss heel-trunnion Warren through-truss bascule design, built in 1919. It was built by the American Bridge Company for the New York, New Haven and Hartford Railroad, replacing a span dating from 1889. In June 2008, the bridge underwent replacement which included the span's conversion from a bascule to a vertical-lift mechanism. As built in 1919, the bridge's abutments and piers were designed to carry a second set of double- track spans, in the event that an expansion to four tracks was ever undertaken at this location by the New Haven Railroad (it never was).
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The third hole is for a safety sear that is thought to allow the rifle to be capable of being converted to "full- auto" by the end-user. US import versions are manufactured with a BATFE approved semi-auto Romanian receiver. The so-called "third hole" is not present, thus the trigger mechanism is simplified and omits the "full auto" safety sear. The military spec FPK is not capable of fully automatic fire however it includes this safety sear to ensure the rifle's hammer cannot be released before the bolt is fully forward and locked in place in the forward trunnion.
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Commenting on Albatross' role, Farragut stated, > "... although it was not in Lieutenant Commander Hart's power to do much, > still he did all that was in his power, and whenever he could bring a gun to > bear, ahead or astern, on the port side, it was instantly fired." Albatross' > only casualty in the action was Charles Raick, the captain's steward, who > according to the ship's deck log, "... was killed while nobly fighting his > gun." But for a Parrott gun which lost a part of its trunnion when struck by a shell, the ship suffered little material damage.
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The 2012 replacement bridge towers over the 1907 bridge In 2010, construction began on a new fixed-trunnion bascule bridge to replace the 1907 span, in an ARRA-funded project. Located south of the old bridge, on the approximate alignment of the pre-1907 swing span, the new structure provides of horizontal clearance, and of closed vertical clearance at mean high water. As part of the project, Amtrak also replenished the beachfront and replaced the Niantic Bay Boardwalk, which had been damaged in storms several years before. The new Niantic River Bridge was opened to rail traffic on September 8, 2012.
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Australian and British gunners with L118 in Afghanistan, 2009 During the early 1990s all UK L118 were fitted with a muzzle velocity measuring device (MVMD), a radar, and its power supply. In 2002 the British Army's L118 guns completed replacement of their optical sights with the LINAPS artillery pointing system (APS) mounted above the barrel. This is a self-contained system that uses three ring laser gyros to determine azimuth, elevation angle and trunnion tilt angle. It also includes facilities for navigation and self-survey using a global positioning system, inertial direction measurement and distance measurement.
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The booms enlarged the Meillerwagen footprint to stabilise it during erection of the rocket, and provided a means of adjusting the Meillerwagen transverse level. The booms deployed outward and forward of the lifting frame trunnion axis to prevent it toppling forward or to either side. The lifting frame was constructed of two formed I-beams, with tubular and box transverse braces. The lifting frame was fitted with plumbing for fuelling the rocket; wiring for powering and monitoring the rocket and for field telephones; accommodations for carrying and dismounting the rocket; and folding platforms to service the rocket with rungs to access them.
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It entered a worm gear at the pivot clamp, then continued to the nose clamp where it entered another worm gear. A shift lever at the nose clamp disengaged the drive shaft to allow either simultaneous or independent operation of the two worm gears. The worm gear at the pivot clamp operated a pair of scissor arms, one on each side of the lifting frame to insert or extract the trunnion pins from the rocket. The worm gear at the nose clamp operated the jaws of the nose clamp to either open or close, thus enclosing or releasing the rocket.
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The forward sight has also a mode for night operation. The gas tube is dove tailed into the front trunnion, and is a single-diameter tube, unlike the AK/AKM tube, which has a star-shaped cross- section to guide the piston while allowing gasses to vent behind it. The gas piston has a cog shaped ring on the stem, behind the piston head. The ring's diameter matches the tube diameter, and it acts as the guide within the gas tube, the notches on the ring allowing excess gasses to be vented behind the piston head/guide.
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The hinged stock is securely locked in its extended position by a spring-loaded button catch located at the rear of the receiver. When folded, the stock is held closed by a spring-loaded capture hook situated on the left side at the front of the receiver housing. A rear-mounted sling swivel is also provided on the right side at the beginning of the stock frame. It retains the pistol grip reinforcement plate the AKMS used, though due to the less complex rear trunnion, only has one riveting hole in place of the three on the AKMS.
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The Salmon Bay Bridge, also known as Bridge No. 4, is a Strauss Heel-trunnion single-leaf bascule bridge spanning across Salmon Bay and connecting Magnolia/Interbay to Ballard in Seattle, Washington. The bridge is located just west of Commodore Park. It carries the main line of the BNSF Railway on its way north to Everett and south to King Street Station and Seattle's Industrial District. The Salmon Bay Bridge, which is located west of the Hiram M. Chittenden Locks, is the last bridge to span the Lake Washington Ship Canal before it becomes Puget Sound.
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The ship's Gunner was informed, who in turn informed the captain...You may fire when ready...at the next high roll, the cannon would be fired. In more modern applications, the quadrant is attached to the trunnion ring or of a large naval gun to align it to benchmarks welded to the ship's deck. This is done to ensure firing of the gun hasn't "warped the deck." A flat surface on the mount gunhouse or turret is also checked against benchmarks, also, to ensure large bearings and/or bearing races haven't changed... to "calibrate" the gun.
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Many designs have increased portability by shrinking the altazimuth (rocker box) mount down to a small rotating platform. The altitude trunnion style bearing in these designs becomes a large radius roughly equal to or greater than the radius of the objective mirror, attached to or integrated into the tube assembly which lowers the overall profile of the mount. The advantage of this is that it reduces the total telescope weight, and the telescope's balance becomes less sensitive to changes in the weight loading of telescope tube from the use of heavier eyepieces or the addition of cameras etc.
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By the time they reach the ground the aircraft is hundreds or thousands of feet in front of the impact point. This distance is known as trail. The SABS adjusted for trail by simply tilting the entire range unit aft on a trunnion, rather than sending adjustments into the calculator itself. If the aircraft is crabbing to adjust for any winds from the side, this also causes the trail to move to the side—the bombs are falling straight down although the aircraft is actually flying sideways into the wind and imparts this velocity to the bombs.
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Swing check valve opening and closing A swing check valve or tilting disc check valve is a check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. A common issue caused by swing check valves is known as water hammer.
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At the Kennedy Space Center, Soto Toro reviews, designs, builds, tests and implements engineering designs used in the Space Shuttle and Payload Operations Development Laboratories. The main project he developed was the Advanced Payload Transfer Measurement System, which consists of a simplified, robust, centrally operated and portable system that automatically measures the spherical coordinates offset between the trunnion and their supports during transfer operations. Soto Toro earned his Doctorate of Philosophy degree in Electrical Engineering and applied to become an astronaut candidate. In NASA, Soto Toro works with testing ground support equipment used in pre-launch, launch and post-launch activities.
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A small tilting crane was mounted on the left side of the turntable to move shells from their transport carts to the loading tray. It was also used to assemble the loading tray and to change the breech. The howitzer could only be loaded at 11° elevation because the shells had to be rammed by a hand- powered winch with pushrod. The eight later weapons used the same carriage as the 24 cm Kanone M. 16; it had trunnion mounts for both types and the gun used the forward mounts while the howitzer used the rear ones.
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Schematic design of the bascule span of Arlington Memorial Bridge. Because the long bascule (or draw) span was so wide, the AMBC and the Army Corps of Engineers decided to hold a competition to determine which type of draw was best suited for the bridge. Six prominent engineering firms were asked to submit designs, which were received on June 14, 1926. Two designs were selected for consideration, and the Corps chose the Strauss bascule bridge (which used a trunnion and counterweight) design submitted by the J. B. Strauss Bascule Bridge Co.Office of Public Buildings and Public Parks of the National Capital, 1927, p. 21.
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The Roosevelt Avenue Bridge over the Flushing River, which carries four lanes of traffic and the New York City Subway's elevated Flushing Line (), was the largest trunnion bascule bridge in the world when it was completed in 1927. The next year, the Main Street terminal of the Flushing subway line opened in downtown Flushing, giving the neighborhood direct subway access. Flushing was a forerunner of Hollywood, when the young American film industry was still based on the U.S. East Coast and Chicago. Decades later, the RKO Keith's movie palace would host vaudeville acts and appearances by the likes of Mickey Rooney, the Marx Brothers and Bob Hope.
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14–15; Hodges & Friedman, pp. 12, 17 and Hereward saw the introduction of a new style of bridge that would become standard on all Royal Navy fleet destroyers from the through to the of 1944. This was necessary as Hereward was fitted with a prototype twin-gun mounting that had a trunnion height higher than the previous weapons, therefore it was necessary to raise the wheelhouse to allow the helmsman to see over the top. Raising the wheelhouse meant it had to be placed in front of, rather than underneath, the bridge, and it was given angled sides, resulting in a characteristic wedge shape with a sloping roof.
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Islands of Palmaria and Tino On the island, there exists a large quantity of reptilian species, such as the European leaf-toed gecko (Phyllodactylus europaeus), the smallest of the European geckos. While present on the neighboring islands of Tino and Tinetto, this species is rare in Liguria. Bird species found on the island include the kestrel (Falco tinnunculus), peregrine falcon (Falco peregrinus), sparrowhawk (Accipiter nisus), red partridge (Alectoris rufa), gulls (Larus argentatus, Larus michahellis), raven (Corvus corax), rock thrushes (Monticola solitarius), and cormorant (Phalacrocorax aristotelis). Several species of bats are found in caves on Palmaria: the trunnion (Plecotus auritus), greater horseshoe bat (Rhinolophus ferrumequinum), and lesser horseshoe bat (Rhinolophus hipposideros).
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The Saiga's magazine catch has a smaller clearance between the receiver than a "normal" AK. This does not allow the larger lug of a non-Saiga magazine to lock in. The AK type magazines can be modified to lock in place, but cartridges may not feed because the Saiga's receiver lacks a bullet guide. The bullet guide allows a round to be pulled from a magazine and then fed into the chamber without being caught on the front trunnion; this bullet guide is specifically built on the lip of the Saiga magazine. Any magazine used that does not have this feature may not feed reliably in the rifle.
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Felix Soto Toro Astronaut applicant, Electrical Designs Engineer at Kennedy Space Center in Florida. Soto reviews, designs, builds, tests and implements engineering designs used in the Space Shuttle and Payload Operations Development Laboratories. The main project he developed was the Advanced Payload Transfer Measurement System (ASPTMS)(Electronic 3D measuring system), which consists of a simplified, robust, centrally operated and portable system that automatically measures the spherical coordinates offset between the trunnion and their supports during transfer operations. NASA Awards and Recognitions: Soto Toro was presented with the 2003 "El Premio Coqui" by La Casa de Puerto Rico in Florida, for his outstanding contributions in the field of science.
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The rear sight is housed in a semi-shrouded protective enclosure that is riveted to the receiver's spring-loaded top cover. This top cover hinges from a barrel trunnion (hinging where the rear sight on a normal AK74 is located), pivoting forward when opened, which also works to unlock the gas tube cover. Both the gas tube and handguard are also of a new type and are wider and shorter than the analogous parts in the AKS-74. For the AKS-74s combined with the 7N6 or 7N10 service cartridges the 350 m battle zero setting limits the apparent "bullet rise" within approximately relative to the line of sight.
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The La Salle Street Bridge (officially the Marshall Suloway Bridge) is a single-deck double-leaf trunnion bascule bridge spanning the main stem of the Chicago River in Chicago, Illinois, that connects the Near North Side with the Loop area. It was constructed in 1928 at a cost of $2,500,000 by the Strobel Steel Constructing Company. The bridge was part of a scheme to widen LaSalle Street and improve access from the Loop to the north side of the river that had been proposed as early as 1902. The design of the bridge, along with those for new bridges at Madison Street, Franklin Street, and Clark Street, was approved in 1916.
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Each bell is suspended from a headstock fitted on trunnions (plain or non-friction bearings) mounted to the belfry framework so that the bell assembly can rotate. When stationary in the down position, the centre of mass of the bell and clapper is appreciably below the centreline of the trunnion supports, giving a pendulous effect to the assembly, and this dynamic is controlled by the ringer's rope. The headstock is fitted with a wooden stay, which, in conjunction with a slider, limits maximum rotational movement to a little less than 370 degrees. To the headstock a large wooden wheel is fitted and to which a rope is attached.
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The primary air input to a ball tube mill performs a dual function. It is used for drying and as the fuel transport medium, and by regulating it the mill output is regulated. Governed by the pulverized fuel outlet temperature requirement, the cold air and hot air dampers are regulated to achieve the correct primary air temperature. In addition to raising the coal temperature inside the mill for drying and better grinding, the same air works as the transport medium to move the pulverized coal out of the mill: it travels through the annular space between the fixed trunnion tubes and the rotating hot air tube onwards to the classifier.
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When set on a pedestal or other mount, they could be used to measure the angular distance between any two celestial objects. The details on their construction and use are essentially the same as those of the astronomical sextants; refer to that article for details. Navy: Used to gauge elevation on ships cannon, the quadrant had to be placed on each gun's trunnion in order to judge range, after the loading. The reading was taken at the top of the ship's roll, the gun adjusted, and checked, again at the top of the roll, and he went to the next gun, until all that were going to be fired were ready.
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Operation of a simple oscillating cylinder steam engine The steam needs to be fed into the end of the cylinder at just the right time in the cycle to push the piston in the correct direction. In the other direction, the steam needs to be allowed to escape from the cylinder. As the crankshaft rotates, the piston rod moves up and down (or side to side in the case of a vertical cylinder) as well as in and out. Because the piston rod is rigid and the piston itself is long relative to its diameter, this causes the cylinder to rock, or "oscillate" on its special mounting (trunnion).
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Mod 5 only differed from Mod 4 in adding a muzzle bell. Mod 6 was skipped and Mod 7 was an experimental Mod 4 bored out to use bag ammunition, a 1,367 cu in chamber, think faceplate added to the breech end, and a trunnion hoop added. With Mod 8, gun No. 161, a Mod 4 gun, a muzzle liner and muzzle bell were used and the rifling was a uniform 1/25 instead of 0 to 1/35. Mod 9 was a Mod 4 using a tube constructed of nickel-steel instead of the normal gun-metal and again the rifling was a uniform 1/25.
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The guns 40x79R cartridge was a shortened version of the naval 40x158R anti-aircraft cartridge, with the shell case reduced from 158 mm (6.22 inches) to 79 mm (3.11 inches) in length.37mm and 40mm Guns in British Service The gun was, for ease of use in trenches, single shot; the gunner had to extract the empty case of a fired cartridge manually and reload the gun after firing each round, which gave it a low rate of fire. It had a simple block breech with percussion gear, and was mounted on a non-recoiling frame consisting of a hydraulic buffer, trunnion block, and rear guide tube.
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The mortar had no recoil mechanism and the barrel sat on a heavy steel base that absorbed recoil. Due to its low velocity and soft recoil the mle 1915 could use large stocks of defective shells with unstable explosives that were produced during the war. The barrel pivoted at the front of the base and could be traversed by a wooden handle at the rear while levers near the trunnion controlled elevation. For transport, the mortar could be placed on a two-wheeled wooden cart with two wooden handles and pulled by a team of 5 men or it would be broken down into 14 pieces and carried by soldiers to the front line trenches.
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Keeping the prop clear of the deck required long landing gear, which, combined with the shortened fuselage, gave the Bearcat a significant "nose-up" profile on land. The hydraulically operated undercarriage used an articulated trunnion which extended the length of the oleo legs when lowered; as the undercarriage retracted the legs were shortened, enabling them to fit into a wheel well which was entirely in the wing. An additional benefit of the inward retracting units was a wide track, which helped counter propeller torque on takeoff and gave the F8F good ground and carrier deck handling.Scrivner 1990, p. 4. The design team had set the goal that the G-58 should weigh 8,750 lb/3,969 kg fully loaded.
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From the 16th to the mid-19th century, the main form of artillery remained the smoothbore cannon. By this time, the trunnion (a short axle protruding from either side of the gun barrel) had been developed, with the result that the barrel could be held in two recesses in the carriage and secured with an iron band, the "capsquare". This simplified elevation, which was achieved by raising or lowering the breech of the gun by means of a wedge called a quoin or later by a steel screw. During this time, the design of gun carriages evolved only slowly, with the trend being towards lighter carriages carrying barrels that were able to throw a heavier projectile.
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An oscillating cylinder engine cannot be reversed by means of the valve linkage (as in a normal fixed cylinder) because there is none. Reversing of the engine can be achieved by reversing the steam connections between inlet and exhaust or, in the case of small engines, by shifting the trunnion pivot point so that the port in the cylinder lines up with a different pair of ports in the port face. In the latter case, the fixed port face is usually provided with three ports, the central one being the steam feed and the outer two being exhausts, only one of which being in use at any time, depending on the required direction of running.
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The standard ammunition is that designed for FH-70 (L15 HE and associated propelling charges) although in training the less effective but cheaper M107 with Green and White propelling charges is used. It is fitted with an auxiliary power unit to eliminate the need to run the main engine to keep the batteries charged while stationary; electrical servos drive the automated elevation, traverse, magazine, shell transfer arm and loader as well as power for electronics and communications. The vehicle is fitted with an autonomous navigation and gun laying dynamic reference unit (DRU) mounted on the trunnion. All main turret functions are controlled by a Turret Control Computer (TCC) with control and display units for the No 1 (Detachment Commander), No 2 (loader) and No 3 (layer).
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Mark I gun barrel construction The gun originated from a desire for a longer 12-inch gun than the existing RML 12-inch 35-ton gun. Experiments in 1874 with both 12-inch and 12.5-inch versions 3 feet longer than the existing 12-inch gun showed the 12.5-inch calibre was more suitable, and further experiments showed a projectile of 800 pounds could be fired with a charge of 130 pounds of P2 gunpowder without undue strain. The same construction as in the existing 12-inch 35-ton gun was used : a mild steel "A" tube toughened in oil, surrounded by wrought iron "B" tube, triple coil in front of the trunnion, coiled breech-piece and breech coil. This was approved in January 1875.
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The stabilizers and some nose wheel parts were from scrap piles in Tucson and Homestead, Florida. The idler arm for the elevator controls, the ejection seat rails and some electrical relays came from an F-104 that crashed and burned at Edwards Air Force Base on the edge of the Mojave Desert. Greenamyer got his throttle quadrant from a Tennessee flying buff he met at the Reno National Air Races. The trunnion mounts for the nose gear, some of the cooling-system valves and a few relays on the Red Baron came from a 25-ton pile of junk that Greenamyer bought at Eglin Air Force Base. In a swap with NASA, he obtained the nose of a Lockheed NF-104A, with its reaction controls.
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An example of a fixed trunnion bascule bridge (which is also known as a "Chicago style bascule bridge"), it may be raised to allow tall ships and boats to pass underneath. The bridge is included in the Michigan–Wacker Historic District and has been designated as a Chicago Landmark. The location is significant in the early history of Chicago, connecting on the north near the 1780s homestead site of Jean Baptiste Point du Sable and on the south the early 19th century site of Fort Dearborn. Events from the city's past are commemorated with sculptures and plaques on the bridge, and exhibits in the McCormick Bridgehouse & Chicago River Museum—housed in one of the bridge tender houses—detail the history of the Chicago River.
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Michigan Avenue Bridge is a double-leaf, double-deck, fixed counterweight, trunnion bascule bridge. It was engineered by the Chicago Department of Public Works, Bureau of Engineering; Edward H. Bennett was the consulting architect and William A. Mulcahy the chief engineer of construction. At the time of construction it was believed to be the first double-deck bridge ever built to have roadway on both levels; faster non-commercial traffic using the upper deck and slower commercial traffic that served the various industries and docks in the vicinity of the river using the lower deck. The Michigan Avenue Bridge is raised twice weekly in the spring and fall to allow tall craft to winter near the river and have summer moorings on Lake Michigan harbors.
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The sleepers must be jacked up again to allow the gun to roll forward to its firing position. This was often done by handwheels driving gear trains attached to the wheels, or even by electric motors on more modern mounts. Almost all of these type of mounts were of the non-traversing type and had to be fired from a curved section of track or turntable. The American post–World War I assessment of railway artillery praised its ruggedness, ease of manufacture and convenience in service, but acknowledged its unsuitability for smaller guns, due to excessive time of operation and lack of traverse, and that it was not suitable for the largest howitzers firing at high angles because of the enormous trunnion forces.
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Fort Nelson. This shows the left trunnion (detailed in black) by which it is mounted on a Vavasseur recoil slide, and there are no lugs on the underside of the breech ring The preceding generation of British 6-inch guns (BL Mks III, IV and VI) had old-style trunnions by which they were mounted on Vavasseur inclined slides to absorb recoil. QF Mk I and II dispensed with trunnions and instead on the lower side of the breech ring were lugs to which were attached modern recoil buffer and hydrospring recuperator (runout) cylinders to absorb recoil and return the barrel to loading position after firing. This allowed the gun to recoil directly backwards rather than backwards and upwards as previously and is the recoil system which in essence is still in use.
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The barrels used in the Minimi have an increased heat capacity for sustained fire, feature a chrome- lined rifled bore (six right-hand grooves) and are manufactured in two versions: with a 178 mm (1:7 in) twist rate used to stabilize the heavier Belgian 5.56×45mm SS109 projectile, or a 305 mm (1:12 in) twist for use with American M193 ammunition. The barrels have a quick-change capability; a lever is provided on the left side of the weapon that unlocks the barrel allowing the shooter to push it forward removing it from its trunnion. A carrying handle is also fixed to the barrel and assists in the barrel change process. A trained soldier can perform a barrel change and ready the weapon for aimed fire in 6–7 seconds.
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A simple oscillating cylinder engine, part of a Mamod SE2 working steam model An oscillating cylinder steam engine (also known as a wobbler in the US) is a simple steam-engine design (proposed by William Murdoch at the end of 18th century) that requires no valve gear. Instead the cylinder rocks, or oscillates, as the crank moves the piston, pivoting in the mounting trunnion so that ports in the cylinder line up with ports in a fixed port face alternately to direct steam into or out of the cylinder. Oscillating cylinder steam engines are now mainly used in toys and models but, in the past, have been used in full-size working engines, mainly on ships and small stationary engines. They have the advantage of simplicity and, therefore, low manufacturing costs.
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Plaque on the east bridge tower Before the current bridges crossing the Rouge River at West Jefferson and Fort Streets were built, the two crossings were served by narrow swing bridges. By the late 1910s, these spans urgently needed replacing, in large part because they interfered with the Federal government's plans to dredge the Rouge River to provide freighter access to the Ford River Rouge Complex. Both the city of Detroit (who was responsible for maintaining the bridges) and Wayne County agreed that the county could better oversee the construction, but legal restrictions prohibited county involvement until state law was changed in 1919. With the new legislation in place, plans were drawn up in 1920 for a "Chicago city type of single trunnion, double-leaf bascule bridge" for each bridge. The cost for the pair of bridges was estimated at $2 million.
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Trunnion from a bronze cannon stamped "J R A & CO, T F" (J.R. Anderson & Company, Tredegar Foundry) made at the Tredegar Iron Works By 1860, the Tredegar Iron Works was the largest of its kind in the South, a fact that played a significant role in the decision to relocate the capital of the Confederacy from Montgomery, Alabama, to Richmond in May 1861. Tredegar supplied high- quality munitions to the Confederacy during the war. Its wartime production included the iron plating for the first Confederate ironclad warship, the CSS Virginia which fought in the historic Battle of Hampton Roads in ; credit for approximately 1,100 artillery pieces during the war, about half of the South's total domestic production of artillery between the war years of 1861–1865, including the development of the Brooke rifle; a giant rail-mounted siege cannon.
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Davy Jones pictured by George Cruikshank in 1832, as described by Tobias Smollett in The Adventures of Peregrine PickleHowever, presented here character is a fake, created by Pipes, Perry and Pickle to scare Mr. Trunnion; see: Davy Jones' Locker is a metaphor for the bottom of the sea: the state of death among drowned sailors and shipwrecks. It is used as a euphemism for drowning or shipwrecks in which the sailors' and ships' remains are consigned to the depths of the ocean (to be sent to Davy Jones' Locker). The origins of the name of Davy Jones, the sailors' devil, are unclear, with a 19th-century dictionary tracing Davy Jones to a "ghost of Jonah". Other explanations of this nautical superstition have been put forth, including an incompetent sailor or a pub owner who kidnapped sailors.
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A design by John W. Page, the inventor of a bascule bridge over the Sanitary and Ship Canal, was rejected in March 1905 due to noncompliance to specifications. The Scherzer Company waited until the bidding deadline to submit two separate designs; both of these were also rejected due to noncompliance. Two contracts were bid out for the trunnion style bascule bridge that Ericson had pioneered; one contract for $81,369 (1905) went to the Jackson and Corbett Company for the substructure, and one for $111,983 (1905) went to the Roemheld and Gallery Company for superstructure work. After the decision, Scherzer brought its argument with Ericson into court, arguing that the Department of Public Works had "maliciously, fraudulently and unlawfully" prohibited Scherzer from bidding their bridge design, which they claimed was both superior in quality and less expensive.
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In contrast, a torque tube arrangement uses only a single universal at the end of the transmission tailshaft, typically a constant velocity joint, and the axle housing is held fast by the torque tube, which anchors the differential housing to the transmission. In the Hotchkiss drive, slip-splines or a plunge-type (ball and trunnion u-joint) eliminate thrust transmitted back up the driveshaft from the axle, allowing simple rear-axle positioning using parallel leaf springs. In the torque-tube type, this thrust is taken by the torque tube to the transmission and thence to the transmission and motor mounts to the frame. While the torque-tube type, when combined with rear coil springs (1938-62 Buick), requires additional locating elements, such as a Panhard rod, this is not needed with a torque tube/leaf spring combination (1906-1937 Buick, early Ford, etc).
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In the design usually found in a toy or model engine, a hole in the side of the cylinder (one at each end for a double-acting cylinder) and a pair of holes in the port block are arranged so that this rocking motion lines up the holes at the correct times, allowing steam to enter the cylinder in one direction and to escape into the atmosphere or condenser in the other direction.Roly Williams (2003-2010) Live Steam Toys - A Users Guide, published by the author In full- size engines, the steam and exhaust ports are usually built into the pivot (trunnion) mounting. However, separate valves may be provided, controlled by the oscillating motion. This allows the cutoff timing to be varied to enable expansive working, as in, for example, the engine in the paddle ship PD Krippen.
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Schematic diagram of double action single stage gas booster with electric drive Back view of Russian oxygen booster pump End view of Russian oxygen booster pump Electrically powered boosters may use a single or three-phase AC motor drive. The high speed rotational output of the motor must be converted to lower speed reciprocating motion of the pistons. One way this has been done (Dräger and Russian KN-3 and KN-4 military boosters) is to connect the motor to a worm drive gearbox with an eccentric output shaft driving a connecting rod which drives the double-ended piston via a central trunnion. This system is well suited to a double acting booster, either with single-stage boost by parallel connected cylinders with the same bore, or two-stage cylinders of different bores connected in series.
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In River Park the river meets the North Shore Channel, a drainage canal built between 1907 and 1910 to increase the flow of the North Branch and help flush pollution into the Chicago Sanitary and Ship Canal. From the confluence with the North Shore Channel south to Belmont Avenue the North Branch flows through mostly residential neighborhoods in a man-made channel that was dug to straighten and deepen the river, helping it to carry the additional flow from the North Shore Channel. South of Belmont the North Branch is lined with a mixture of residential developments, retail parks, and industry until it reaches the industrial area known as the Clybourn Corridor. Here it passes beneath the Cortland Street Drawbridge, which was the first 'Chicago-style' fixed-trunnion bascule bridge built in the United States, and is designated as an ASCE Civil Engineering Landmark and a Chicago Landmark.
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Mk I & MK II gun barrels The 10-inch gun was a standard "Woolwich" design (characterised by having a steel A tube with relatively few broad, rounded and shallow rifling grooves) developed in 1868, based on the successful Mk III 9-inch gun, itself based on the "Fraser" system. The Fraser system was an economy measure applied to the successful Armstrong design for heavy muzzle- loaders, which were expensive to produce. It retained the Armstrong steel barrel surrounded by wrought-iron coils under tension, but replaced the multiple thin wrought-iron coils shrunk around it by a single larger coil (10 inch Mark I) or 2 coils (Mark II); the trunnion ring was now welded to other coils; and it eliminated Armstrong's expensive forged breech-piece.Treatise on Construction of Service Ordnance 1877, page 92-93 The gun was rifled with 7 grooves, increasing from 1 turn in 100 calibres to 1 in 40.
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The original Magpul Masada's design represented a combination of several recent rifle designs, incorporating what was considered by its designers to be the best features of each in a single, lightweight, modular rifle. Design features from the Armalite AR-18 (short- stroke gas system), the FN SCAR (upper receiver, charging handle location), the Heckler & Koch G36 and XM8 (wide use of polymer components), and the M16/AR-15 (trigger pack, barrel, fire control group) were present. The rifle also included several features developed by Magpul, such as a quick-change barrel/trunnion system, adjustable gas regulator, non-reciprocating charging handle, and storage compartments located in the stock and grip. Just prior to the deal with Bushmaster, Magpul made additional changes to their design, the most obvious of these was the relocation of the ambidextrous operating handle to a forward position (somewhat similar to the Heckler & Koch G3 and Heckler & Koch MP5 series of weapons).
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The main difference between the Australian and German tanks was the inclusion of a SABCA fire control system, equipment to allow the tank to better operate in the tropics, additional storage boxes on the sides of the tank as well as improved trunnion bearings and combustion cleaners. These tanks were delivered to Australia in batches between 1976 and 1978. During the Leopard's service very little in the way of upgrades were undertaken, and by the 1990s they had become obsolete. 1st Armoured Regiment M1 Abrams tank in 2011 After an internal debate on whether the Army should continue to operate tanks as part of its force structure, in 2004 the Australian Government decided to replace the Leopards with a small fleet of American M1A1 Abrams tanks to provide close support for infantry when operating in jungle or urban areas. After 31 years of service the Leopards were subsequently replaced by 59 M1A1 Abrams AIM, which began entering service in 2007.
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Frémont had to abandon the howitzer in late January 1843 in a canyon on the east side of Sonora Pass, in what is now a part of Humboldt-Toiyabe National Forest near Burcham Flat, when exhaustion of the expedition's food supplies forced a risky decision to make a winter crossing of the Sierra Nevada Mountains to reach Sutter's Fort, near Sacramento, California. A few wrought iron parts of Frémont's howitzer, including one of the two axle trunnion assemblies and three iron wheel tires, were found by search teams using metal detectors in the late 1990s and early 2000s. These parts have been authenticated by U.S. Army historian Lieutenant Colonel Paul R. Rosewitz as belonging to a pre-Civil War model M1841, and from the location of the find, could only have come from the Fremont Second Expedition howitzer. It is possible that the barrel was found in 1960 by Francois Uzes, but it was not recovered at that time, and has not been re- located as of 2015 despite several search efforts.
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Past the Garden State Parkway, Route 3 eventually turns into a six- lane freeway that is not designed to Interstate Highway standards. It interchanges with CR 622 (Bloomfield Avenue), before it passes over Norfolk Southern's Newark Industrial Track line and intersects CR 603 (Passaic Avenue), which heads south into Nutley to become Route 7\. The next interchange is for CR 601 (Main Avenue). Past that interchange, Route 3 passes over NJ Transit's Main Line and comes to an interchange with Route 21 before passing over the route. Route 3 eastbound past Route 17 in Rutherford Route 3 crosses the Passaic River on a fixed bridge, which replaced a double-leaf trunnion bascule bridge in 2013, into Rutherford, Bergen County. Just after crossing the river, the route interchanges with CR 507 (Riverside Avenue). The freeway continues through a residential area and comes to an exit that provides access to southbound Route 17\. Past this interchange, Route 3 is closely paralleled by Route 17 to the south until Route 3 interchanges again with Route 17, which continues to the north of Route 3.
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Elevated entrance of the bergfried of Scherenburg Castle Ascent by wooden ladder (Codex Manesse) The rope lift as a means of entry (Codex Manesse) The inner ward of Aggstein Castle above the Danube St. Catherine's Monastery on Mount Sinai. The wooden oriel for the rope lift is visible above the modern entrance View of the inside of the elevated entrance of Splügen Castle (Graubünden) showing the trunnion of the door fixture and the groove for the locking bar A martello tower of the early 19th century on the Irish coast An elevated entrance is a type of entrance, common in the design of medieval castles, that is not accessible from ground level, but lies at the level of an upper storey. The elevated entrance is the lowest and frequently the only way of entering a fortified building or residence. In the case of circular towers, a large opening in the main wall at ground level was a potential weakness and experts on castle design have argued that the elevated entrance served a structural as well as defensive purpose.
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At first the guns were equipped with a front sight at the muzzle and a pendulum hausse rear sight. This was soon replaced by a front sight on top of the right rimbase (at the trunnion) and a brass tangent sight mounted on the right side of the wrought iron band. On 24 September 1863, the Ordnance Board recommended that production of the 2.9-inch Parrott be halted and that existing guns be re-bored to 3-inch caliber. This decision may have been influenced by gun jams caused by accidentally loading the 2.9-inch Parrott with 3-inch ammunition. Between November 1864 and June 1865, 119 2.9-inch Parrott rifles were converted to 3-inch caliber, though none have survived. The West Point Foundry halted production of 2.9-inch Parrotts on 13 April 1863 and the new 3-inch versions did not appear until 12 February 1864. Altogether, 279 3-inch Parrott rifles, Model 1863 were manufactured until 4 September 1865. In 1860, the West Point Foundry sold a Parrott rifle to the state of Virginia.
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