Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 166
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 operating leverwith the lowering or… … Fig. 144. H)8 Pumps a>i(i hydraulics.
Hydraulic machinery · Pumping machinery
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