Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 216
slipping on the rods,and the action of the double cams is such that, the greater tlie strainupon the ring above, the tighter they close upon tiie rods. Whenthe rod is hoisted to the required height, the safety-clamp is tight-ened belov/, and the strain on the rope is withdrawn; the ends of… … Fig. 25.—Lifting-jack.
Mechanical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
