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Wall washer, Anchor plate on walls of buildings; Wallwasher, a lighting device to illuminate a wall This page was last edited on 11 August 2017, at 18:50 (UTC). ...
A patient lift (patient hoist, jack hoist, Hoyer lift, or hydraulic lift) may be either a sling lift or a sit-to-stand lift.This is an assistive device that allows patients in hospitals and nursing homes and people receiving home health care to be transferred between a bed and a chair or other similar resting places, by the use of electrical or hydraulic power.
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.
They both feature circular water channels with conveyor belt lifts from the course end to the beginning, plus bigger drops, wider eddies, mid-course pools, and guided raft trips for tourists. Dickerson is for decked, hard-shell boats only. All three facilities are used for canoe and kayak training and as venues for competitions.
To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a crane. [ 1 ] [ 2 ] Derricks are especially useful for high-rise rigging, jobs that cover a long period of time, or jobs when the impact to street or pedestrian traffic is a concern. [ 3 ]
A come-along, also known as a power puller, is a hand-operated winch with a ratchet used to pull objects. The drum is wrapped with wire rope . A similar tool that uses a nylon strap is used to straighten trees, as it straightens gradually over time, therefore not splitting the trunk.
In 1871, when hydraulic power was a well established technology, Edward B. Ellington founded Wharves and Warehouses Steam Power and Hydraulic Pressure Company, which became the London Hydraulic Power Company in 1883. It constructed a network of high-pressure mains on both sides of the Thames which ultimately extended 184 miles (296 km) and ...
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. The ditcher, a flatcar-mounted crane designed to excavate soil on either side of a railroad, was invented by Oliver Crosby in 1904. [4]
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