Fig. 715.
Fig. 715a.
Fig. 715b.
[Fig. 715] represents a top view, [Fig. 715a] a front view, and [Fig. 715b] an end view, of a box tool for shaping the handles for the wheels of the feeding mechanism of machines. The work is first turned true and to its required diameter, and the rest is set to just bear against the work to steady it and hold it against the pressure of the cut. The cutter is cylindrical with a gap cut in it at g, so as to give a cutting edge. By grinding the face of this gap the tool is sharpened without altering its shape, as is explained with reference to circular or disc tools for lathe work. The cutter is provided with a stem by which it is held in the slide, through the medium of the clamp. The slide is operated by an eccentric on the spindle or rod r, which is operated by the handle h. The stop obviously arrests the motion of the slide when it meets the box b, and this determines the diameter of the work, which is represented by w in the end view figure.
