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 873
en automatically when the pressure in the cylinder equalsthe discharge pressure. 846 Steam Engineering A modification of the valve-gear shown by Pig. 454 isillustrated in Fig. 355. In this gear the inlet valves areoperated the same as in Fig. 354^ but the discharge valvesare mechanically closed^… … J^iG. 354 AIR CYLINDER WITH AUTOMATIC DISCHARGE ^ALLIS-CHALMERS AIR COMPRESSOR so timed as to positively bring.the valves to their seats justas the piston reaches the end of its stroke, thus avoidingany slip of air back by the valves and also to avoid slam-ming when the piston commences to return.…
