Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 137
132 JACK, TRAVERSING SCREW. JACK, TRAVERSING SCREW. Figs. 2415and 2416 exhibit a side view and plan of thescrew modification. The screw-jack A is boltedto the plank C; at the other end of the plank isfixed the rack (i, in which the toe of the strut Fadvances as the screw B is elevated; the… … :fe:^W ^rrn-nirn-rnrrrT^ of the strut when the screw Udepressed is shown bv the dottedlines. The object of this strutis to relieve the screw of the vio-lent cross-strain to which theapparatus is subject, when the■ a engine or carnage is pulled over^^^ by the lever; which strain isentirely…
Mechanical engineering · Mechanics · Engineering
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