Search results
Results from the WOW.Com Content Network
Tube and clamp scaffold (commonly called tube and coupler scaffold or tube and fitting scaffold) is a versatile type of scaffold consisting of steel or aluminium tubes and clamps. [1] Vertical tubes are connected to horizontal tubes via right angle clamps.
The European system links to the former Soviet Russian-gauge network, where SA3 automatic couplers are used. Some research has been undertaken to choose an automatic freight coupler compatible with the Soviet one, but owing to widescale replacement cost, no action has been taken to implement the conversion, except for some trial installations.
Scaffolding for rehabilitation in Madrid, Spain [1] Scaffolding for renovation on the Virgin Mary statue, Santiago de Chile, Chile.. Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures.
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 ...
In 1965, the system scaffolding specialist designed, for example, the definitive insertion-frame system for facade scaffolding construction, with its SpeedyScaf made from steel and aluminium. In 1974, Allround Scaffolding superseded conventional scaffolding construction techniques, using steel tubes and couplers, with its bolt-free wedge-head ...
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 ...
On a standard-gauge railway, the nominal mounting height for the coupler (rail top to coupler center) is 33 inches (838 mm), with a 34 + 1 ⁄ 2 ± 1 inch (876 ± 25 mm) maximum height on empty cars and 31 + 1 ⁄ 2 ± 1 inch (800 ± 25 mm) minimum height on loaded cars.
Quick couplers (also called quick hitches) are used with construction machines to allow the rapid change of working tools or buckets and attachments on the machine. They remove the need to use hammers to manually drive out and insert the mounting pins for attachments.