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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.
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.
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 ...
Offshore construction – is the installation of structures and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources. It is also called maritime engineering .
Hardware store. Yarkand.. Hardware (some types also known as household hardware) is equipment, generally used in machines, in construction or in any built good, that can be touched or held by hand such as keys, locks, nuts, screws, washers, hinges, latches, handles, wire, chains, belts, plumbing supplies, electrical supplies, tools, utensils, cutlery and machine parts.
FOUNTAIN CITY, Wis. (AP) - An autopsy finds that a waitress died of severe head injuries after getting her head caught in a dumbwaiter at a Wisconsin restaurant last week, police said Tuesday.
References to the construction documents, drawings, and specifications assist the architect and engineer in their review of the shop drawings. Attachment of manufacturer’s material specifications, “catalog cut sheets,” and other manufacturer’s information may be helpful to accompany these drawings.
In some cases, the meaning has been extended to include small pieces that are inserted between units of a larger structure as a planned part of the construction process, rather than as an ad hoc repair. The term is used in woodworking, masonry, railroading, boatbuilding, theater, and other fields.