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In 1908, Reginald P. Bolton published the first book devoted to this subject, Elevator Service. [34] The summation of his work was a massive fold-out chart (placed at the back of his book) that allowed users to determine the number of express and local elevators needed for a given building to meet a desired interval of service.
The stage contains 7 hydraulic elevators that are 60 ft (18 m) wide, with double decks; three slipstages (large spaces on either side of and behind the main stage, each capable of holding a complete stage setting), the upstage one containing a 60 ft (18 m) diameter turntable; 103 motorized battens (linesets) for overhead lifting; and two 100 ft ...
Otis elevator in Glasgow, Scotland, imported from the U.S. in 1856 for Gardner's Warehouse, the oldest cast-iron fronted building in the British Isles [7] Otis founded the Otis Elevator Company in Yonkers, New York, in 1853. When he died in 1861 his sons Charles and Norton formed a partnership and continued the business.
A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.
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.
In 1913, Woolley and Meredith defined them like Anthony, but gave the following dimensions: hex head cap screws up to and including 7 ⁄ 16 inch (11.1125 mm) have a head that is 3 ⁄ 16 inch (4.7625 mm) larger than the shank diameter; screws greater than 1 ⁄ 2 inch (12.7 mm) in diameter have a head that is 1 ⁄ 4 inch (6.35 mm) larger than ...