Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 317
Fig. 285. piston in time there is a lug, B, Fig. 286, which forms a part ofthe valve stem and comes in contact with the valve piston andthe entire power of the steam cylinder starts it. The correcttiming of the valve movements is controlled by the position of … Fig. 286. the tappets. If they are too near together, the valve wnl 1thrown too soon and thus the stroke of the pump will ishoitcncd, while on the other hand if too far apart, the pawill Complete its stroke without moving the valves. Th.tappets are set and keyed securely before leaving the factory.…
Hydraulic machinery · Pumping machinery
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