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 1019
Fig. 411 Hydraulic Elevators 985 crosshead also operates the valve, the opening of the latteris rapidly increased and the car speed correspondingly ac-celerated. When the bar E has carried the stop N as far as thestop T the releasing lever S strikes the latter and the hookon the stop N is raised so…
