Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1001
Fig. 399 Hydraulic Elevators 967 allows them to revolve freely around the studs upon whichthey are mounted. The frame I is suspended from a ropethat passes over the two small sheaves resting on top of theoverhead beams. The end of this rope extends downward,outside of the elevator hatchway, and has…
