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The electric chain hoist, also known as the "electric hoist", is the least used type of engine crane. The operation is similar to the chain hoist in the way that chains are used to lift the engine. The electric chain hoist uses an electric motor operated by remote control to lift the engine, unlike the chain hoist where the operator has to ...
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
As of 2012 AAE manufactured, distributed, and sold auto service equipment around the world. Its primary products included automotive lifts, wheel balancers, and tire changers. AAE claims a customer base of over 100,000 companies and individuals. In 2004 AAE's U.S.-based manufacturing processes were internationalized.
This leads to a mechanical advantage: the force needed to lift a load is only a fraction of the load's weight. At the same time, the distance the load is lifted is smaller than the length of chain pulled by the same factor. This factor (the mechanical advantage MA) depends on the relative difference of the radii r and R of the connected pulleys:
A forklift (also called industrial truck, lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various companies, including Clark , which made transmissions , and Yale & Towne ...
In 1892 American Manufacturing Company became known as American Hoist & Derrick for the next 106 years. The first mobile crane, the Traveling Derrick, was invented in 1895. It consisted of a revolving derrick and steam hoist mounted on a rail-car like wheels.
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