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 996
hat in case thetank pressure should fail, the flow of water past this clear- 960 Steam Engineering Fig. 396 ance is retarded sufficiently to prevent a dangerous speedin the descent of the car. Hydraulic Elevators 961 When the valve is moved in either direction to set thecar in motion^ water passes… … Fig. 397 into 14, as indicated by the arrows. In this way sufficientopening around the throttle valve is afforded even whenthe port of the operating valve piston V is only slightlyopen. The passages 13 and the connection between theports 14 and 10 are not easily made out from Pig. 395, but 962…
