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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.
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 .
The dumb waiter of the title refers to the serving hatch and food lift that delivers orders to the gunmen. It could also refer to Gus, who fails to realise that he is waiting to be the victim, or even to Ben, whose obedience to a higher authority eventually forces him to eliminate his partner.
George W. Cannon was an American inventor from New York.He is best known for the invention of the mechanical dumbwaiter.Cannon first filed for the patent of a brake system (US Patent no. 260776) that could be used for a dumbwaiter on January 6, 1883. [1]
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B. Bamboo-mud wall; Basement; Batter (walls) Bay (architecture) Beam and block; BIM Collaboration Format; Birdsmouth joint; Bison industrialised building system
The building was also designed with two electric elevators, as well as a frame lift for hoisting picture frames. [20] The passenger elevators are small, with the larger cab measuring 12.5 square feet (1.16 m 2). There was a freight lift in the back. [24] A dumbwaiter brought food from the basement to each story. [20] [25]
A double-deck elevator or double-deck lift is an elevator where one cab is stacked on top of another. This allows passengers on two consecutive floors to be able to use the elevator simultaneously, significantly increasing the passenger capacity of an elevator shaft.