Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 394
1584. GORDON PRINTINGPRESS.—Single cylinder, for bill andletter press-work. 1585. RACK AND PAWL wheel lifting-jackLower pawl is operated by a lever or crank. MISCELLANEOUS DEVICES. 383 … 1586. BALL-BEARING SCREW JACK.—The balls run in grooves between the bearingplates. 1587. HYDRAULIC TRANSFER JACK.—For lifting cars or transferringover temporary rails. The extension ofthe truck axles allows for adjustment toany gauge railroad.
Mechanical movements
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