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US Patent: 54,519
Lathe Gearing
Walter Fitzgerald - Boston, MA

USPTO Classifications:
74/348, 74/352

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine gearing
metalworking machines : metal lathes : metal lathe accessories


Not known to have been produced

L. B. Kidder
M. W. Frothingham
J. B. Crosby
F. Gould

Patent Dates:
Granted: May 08, 1866

Patent Pictures:
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Crosby and Gould - patent attorneys

It is well known to practical mechanicians that the rotation of the spindle in lathe-head stocks and some other machinists' tools is required to be in opposite directions, and also that the reverse or backward rotation is generally required to be at a greater rate of speed than the forward rotation, the backward rotation being generally for the purpose of returning the operating-tool to its starting-place. The apparatus usually employed for the purpose of giving said reverse rotations and at different rates of speed is commonly known by the general term of " overhead reversing-gear." which embraces two belts, one open aud the other crossed, and driving two loose pulleys on a shaft, which has thereon the cone or other pulley which drives the machine beneath, and a plain or a conical clutch arranged so that it must turn with the shaft but can be slid in either direction to engage with either of the loose pulleys. By my invention I dispense with one of the belts, thereby saving the cost of it and its two pulleys, and by substitution of a simple arrangement in lieu of the clutch-coupling before named I accomplish in a better and cheaper manner all that was before effected by the complex and expensive apparatus before alluded to.

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