Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 456
has a V-shaped groove in which runs amanila rope about £- inch iu diameter. One end of this rope is 354 ELEVATORS 41 made fast to a lever on the top of the cage, which operates thesafety dogs, the other end is carried down the hatchway and aroundanother sheave at the bottom and back again up to the… … Fig. 26. Diagram of Safety Governor and has a moderately heavy weight attached below it which servesthe double purpose of keeping the governor rope taut and of tak-ing up or compensating for the stretch of the rope. It also givesihe necessary tension for driving the governor, and when thesheave in…
Architecture · Building · Carpentry
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