Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 165
he spring 14. 8 represents the body of the pump16 its packing and 15 the ram packing ring. No. 16 does notmove, but the ram 17 does, having a cup leather reversed at itsupper end applied in the same way and manner as 16, withscrewed packing ring. The discharge valve is located behindthe pump… … Fig. 143. The details of this punch are like Fig. 142. It has twoguards, one each side of the punch to pull the material operatedupon off the punch as it is raised by the lower lever. Anothervery convenient style of hydraulic punch is shown in Fig. 144where A represents the body of punch, B the…
Hydraulic machinery · Pumping machinery
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