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Vertical tubes are connected to horizontal tubes via right angle clamps. Diagonal tubes are connected to the scaffold at regular intervals via swivel clamps in order to provide stability to the structure. This type of scaffold is generally used where extensive versatility is required. In many countries, it is common in construction. Horizontal ...
A short section of steel scaffold tube. Couplers are the fittings which hold the tubes together. The most common are called scaffold couplers, and there are three basic types: right-angle couplers, putlog couplers and swivel couplers. To join tubes end-to-end joint pins (also called spigots) or sleeve couplers are used. Only right angle ...
The Janney coupler, later the Master Car Builders Association (MCB) coupler, [19] now the Association of American Railroads (AAR) coupler, is also commonly known as a buckeye, knuckle, or Alliance coupler. The AAR/APTA TypeE, TypeF, and TypeH couplers are all compatible Janney couplers, but used for different rail cars (general freight, tank ...
A rotary union is sometimes referred to as a rotating union, rotary valve, swivel union, rotorseal, [3] rotary couplings, rotary joint, rotating joints, ...
A movable scaffolding system (MSS) is a special-purpose self-launching form used in bridge construction, specifically prestressed concrete bridges with segments or spans that are cast in place. The movable scaffolding system is used to support a form while the concrete is cured; once the segment is complete, the scaffold and forms are moved to ...
A camlock, also called cam and groove, is a quick connect fluid transfer hose coupling that consists of a male "adapter" and female "coupler". The adapter has a groove on the outside that is engaged by the "cam arms" on the outside of the coupler to effect a seal against the gasket inside the "coupler". They are commonly used for petroleum or ...
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...
A swivel is a connection that allows the connected object, such as a gun, chair, swivel caster, or an anchor rode to rotate horizontally or vertically. Swivel designs
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