Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 162
lever. This jack appeals particularly ^vi. 140. to the marine engineer, to be at-tached to the trolley over the engine for the purpose ofraising pistons, rods and lifting various parts of the machinery. Horizontal Jack.—The accompanying engraving. Fig. 140,shows a horizontal type for pulling… … 1C4 Pumps and HydraMlics. This pump has two plungers of different diameters, thesmall one inside of the large, so that by throwing a clutch,both plungers may \\ox\i together as one, or they may beseparated, and the smaller one used ; as for example, in start-ing, the larger pump is used as far as…
Hydraulic machinery · Pumping machinery
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