Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 250
( floor plate on lower housing protected by shield which may be easilyreplaced when worn. \Vm. Sellers & Co., Incorporated, Philadelphia, Pa. 245 Plate No. 205. … STRAIGHTENING ROLI.S FOR PLATES Seven 6 forged steel rolls, 38 long. Three lower rolls driven directly bylarge wheels from same shaft, a ranch better and more desirable arrangementthan the usual train of small pinions with idle wheels. Outer rolls adjusted byseparate hand wheels, two inner rolls…
Machine-tools · Machinery
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