Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 285
and thebracing which ties the twogirders together insures a lat-eral stiffness which is amplysufficient to resist the transverse action produced by sudden stopping or starting ofthe heavily loaded bridge. That this action is not insignificant in a quick crane isnow generally recognized, and those… … SECTION THROUGH BRIDGE WITH TROLLEYIN POSITION. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. 281 Plate No. 230.
Machine-tools · Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
