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US Patent: 83,774
Turning Lathe
Improved Adjustable Gearing for Lathes
John Humphreys - Chicopee, MA

USPTO Classifications:
74/348, 82/140

Tool Categories:
metalworking machines : metal lathes : engine lathes


Not known to have been produced

R. F. Hyde
E. H. Hyde
W. N. Ericson
N. Smith

Patent Dates:
Granted: Nov. 03, 1868

Patent Pictures:
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Gardiner and Hyde - patent attorneys

This invention consists-of a new and simple device, by which the use of separate gear wheels may be dispensed with in screw-cutting lathes. It is well known that a great deal of trouble arises in a workshop from the mislaying and losing of the gear-wheels used for changing the inclination of the screw-cutting devices in this kind of lathes; these wheels being made in sets of all sizes, and requiring to be numbered, and kept, in the proper places, to prevent mistakes, in my device the only thing required, in order to change the machine to any numbered screw, is to move a lever, and pin it or otherwise fasten it to the proper place, as indicated by the number on a scale marked for the purpose.

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