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A simple dumbwaiter is a movable frame in a shaft, dropped by a rope on a pulley, guided by rails; most dumbwaiters have a shaft, cart, and capacity smaller than those of passenger elevators, usually 45 to 450 kg (100 to 992 lbs.) [2] Before electric motors were added in the 1920s, dumbwaiters were controlled manually by ropes on pulleys.
Genie is an American company that manufactures work lifts and platforms used in construction, maintenance, warehouse stocking, and equipment installation. Founded in 1966 by Bud Bushnell, the company operated independently until acquired by Terex in 2002. [1]
According to lore, Thomas Jefferson invented the device, which was known as a "dumbwaiter", for his daughter Susan. Regardless of the origins of the name, by 1917 it was advertised in Vanity Fair [ 4 ] as "Ovington's $8.50 mahogany 'Revolving Server or Lazy Susan ' ", [ 5 ] but the term's use predates both the advertisement and, probably, the ...
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist , although some pump hydraulic fluid to raise a cylindrical piston like a jack .
In 1996, Doppelmayr's European holding company purchased the ropeway department of Von Roll, a Swiss manufacturer which had been making lifts in North America since the mid-1980s. Von Roll owned Hall Ski-Lift, an American company that produced more than 400 lifts from 1960 to 1985. Doppelmayr now controlled all the spare parts sales for ...
Administers specified safety services pertaining to elevators, escalators, dumbwaiters, freight platform lifts, man lifts, passenger ropeways, personnel hoists, liftsfor persons with physical disabilities, amusement rides, and all other 'elevating devices'. Municipal Affairs: Calgary Metropolitan Regional Board Advisory
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At the center of the car are stairs down to the kitchen. A dumbwaiter is used to bring food and drink to the dining level, as well as to return dishes, glasses, and cutlery for washing. [66] A late 2010s overhaul added a refrigerator on the upper level for easy access and replaced incandescent lights with LED lighting. [93]
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