Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 163
f this appliance may be changed to three timesgreater, and its power reduced to one-third of the maximumby throwing the clutch which brings the large plunger intooperation. A rack and pinion with handle is connected withthe main ram to cause its return when forced out to its fulllength. The size… … Em. ui. The hydraulic bolt extractor shown in Fig. 141 is an admirabledevice to do this work without injuring the bolts or threads.This same apparatus may be used for other purposes as well asthat for which it was designed, as will appear from time to time. Ilyd-aulic Apparatus. 165 The Uydraulic…
Hydraulic machinery · Pumping machinery
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