Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 92
belts are all open,—that is, they are alldriven one way. As you stand in front of the machine the grinder runs toward you, or from the edge. Thespeed recommended to run the grinder is about 750 turns per minute. The knife, when bolted on to the rest,should be set just as you wish the scarf or bevel… … This Grinder has a IJ inch steel mandrel, for wheels with | inch mandrel hole. It will run two wheels at thesame time, from 8 to 10 inches in diameter, j to 2i inch face. The No. 1 Grinder is made in the same style as theNo. 0, for wheels with 1 inch mandrel hole. §3
