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2. Engine crane - Wikipedia

   en.wikipedia.org/wiki/Engine_crane

   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 ...

3. American Crane Corporation - Wikipedia

   en.wikipedia.org/wiki/American_Crane_Corporation

   A wire rope clamp designed to loop wire cable without the losing the integrity of the wire was invented by Oliver Crosby in 1886. [3] American Manufacturing Company invented further enhancements to the construction industry by establishing steam-powered hoists in 1889 and the largest electric hoists, up to 15 hp.

4. Hoist (device) - Wikipedia

   en.wikipedia.org/wiki/Hoist_(device)

   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.

5. craigslist - Wikipedia

   en.wikipedia.org/wiki/Craigslist

   Craigslist headquarters in the Inner Sunset District of San Francisco prior to 2010. The site serves more than 20 billion [17] page views per month, putting it in 72nd place overall among websites worldwide and 11th place overall among websites in the United States (per Alexa.com on June 28, 2016), with more than 49.4 million unique monthly visitors in the United States alone (per Compete.com ...

6. Crane (machine) - Wikipedia

   en.wikipedia.org/wiki/Crane_(machine)

   Counter jib: holds counterweights, hoist motor, hoist drum and the electronics. (In many older tower crane designs the hoisting devices and electronics were located in the mast foot.) [ 65 ] Hoist winch : the hoist winch assembly consists of the hoist winch (motor, gearbox, hoist drum, hoist rope, and brakes), the hoist motor controller, and ...

7. Hydraulic hooklift hoist - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_hooklift_hoist

   Hydraulic hooklift hoists are mounted on heavy duty trucks to enable hauliers to change out flatbeds, dumpster bodies, and similar containers. Primarily used in conjunction with tilt frame bodies and specialised roller containers , generally designed for the transportation of materials in the waste , recycling , scrap and demolition industries ...

8. Treadwheel crane - Wikipedia

   en.wikipedia.org/wiki/Treadwheel_crane

   During the High Middle Ages, the treadwheel crane was reintroduced on a large scale after the technology had fallen into disuse in western Europe with the demise of the Western Roman Empire. [3] The earliest reference to a treadwheel ( magna rota ) reappears in archival literature in France about 1225, [ 4 ] followed by an illuminated depiction ...

9. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff tackle.