Fig. 1992.
[Fig. 1992] represents Brainard’s machine for grinding milling cutters. It consists of a threaded column a to which is fitted the knee b, which as it fits the top of the threads on the column may be swung or revolved about the column without being altered in its height upon the same except by means of the threaded ring c. At d is a lever for clamping the knee b to the column after adjustment; w represents the emery wheel mounted on the end of the horizontal spindle having journal bearing at the top of the column. The face of the knee b has a slideway d for the fixtures, &c., which hold the cutters to be ground, and at e is a lug pierced to receive an arbor whereon to place cutters to be ground, the lug being split and having a binding screw to lock the arbor firmly in place. f is a slide for receiving the grinding attachments, one of which is shown at k carrying a milling cutter in position to be ground on the face.
Fig. 1993.
Fig. 1994.