Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 207
on rollersand clamped at moment of shearing. Moving shear blade operated by toothedsegment driven by spiral pinion driven by fast and loose pulleys like planer. Willstop at top of stroke. Length of stroke adjustable to suit. Blade completelyunder control and may be stopped and reversed even after… … DOUBLE ANGLE SHEAR. Arranged on swivelling base, with supporting table for work. Will shear6 ,by 6 by i angles from 30 degrees in either direction to square, withoutchanging the direction of the angle-iron. That is, instead of swinging the angle-iron, the machine is swivelled, thus greatly…
Machine-tools · Machinery
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