'Simplex' automatic band-saw sharpening machine

"Simplex" automatic band saw sharpening machine with handle

This is a machine for setting the teeth of band saws rapidly and accurately.

It consists of a frame in which the saw blade is held by an easily adjustable clamp so as to be free to slide endwise. To this frame is pivoted a lever which is oscillated by hand in a direction at right angles to the saw. A steel plate is secured to the lower and shorter arm of the lever, and projections on this plate act upon the teeth of the saw and set them to one side or the other on alternate strokes of the lever. At the middle of each stroke the saw is fed forward by a pawl attached to one arm of a bellcrank lever the other arm of which is acted upon by a cam formed on the lever. The pawl is returned by a spring and its stroke is regulated by a screw. Two screws, passing through lugs on the lever boss and bearing against stops on the frame, serve to regulate the amount of set.