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 83
atlttttt^l^ I ■lii iiF 1 i|iniii|i Ikter^t Tei|or|rq^ ]V[k6l|ii|e. … This machine is built of iron and steel, and is simple, firm and durable. Both cutter heads raise and lower by ascrew to each, operated by a crank, with a patented device, by which both heads are raised and lowered together,without altering the thickness of the tenon. Each cope is attached to each…
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