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 54
\ii|e, … Witl) i>orii]g iA.j)j)aiatu^. This machine is especially adapted for ordinary work in hard wood and the heavier classes of building work, &c.The chisel has a rapid perpendicular motion, and is brought down to the work by the treadle, and carried up by thebalance-weight on the back end of…
