Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · 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…
