tter is secured a crank arm, N, at the er wood working tools, yet the machine can be applied to a low. When the crank arm turns forward the inwardly ex- end of which is a spindle, O, on which the land wheel, P, variety of purposes by workers on metal. For further par- tending end of the spindle, O,… … wheel, Q, the teeth of which engage with those of a larger Patented through the Scientific American Patent Agency, wheel, R, that revolves upon a journal on the extremity of March 11, 1873. For any further particulars required, ad- ing will, we think, be at once recognized by all who have ever the…