Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 990
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 from port 12 to port 10 throughside ports 14. A portion of this water passes directly from12 to… … 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 Fig. 395, but 962…
