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 136
l be about 44 inches, and for one turn ofthe wheel the handle must pass through 5 X 44 ^ 220. The wheel carries a pinion of s.ay, 3 leaves,of a pitch of 5 of an inch, working the rack that cames the weight; one turn of the pinion will, there-fore, raise the rack one inch, and as the power moves… … 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…
Mechanical engineering · Mechanics · Engineering
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