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US Patent: 138,591
Improvement in Planes
Adjustable Mouthpiece
Patentee:
J. Ceville Spencer - Phelps, NY

USPTO Classifications:
30/490

Tool Categories:
woodworking tools : planes : plane adjustment mechanisms : plane throat adjustments

Assignees:
J. Ceville Spencer - Phelps, NY
Francis X. Gervis - Phelps, NY

Manufacturer:
A. Howland & Co - Auburn, NY

Witnesses:
A. W. Almquist
C. Sedgewick
Lysander Redfield
Francis Gervis

Patent Dates:
Granted: May 06, 1873

Patent Pictures:
USPTO pdf tiff
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Description:
An adjustable mouthpiece for wooden planes. It provides for two interesting features. A set of screws is located in the recess for the adjustable plate and can be adjusted to locate the plate whenever the wooden stock is jointed flat. The bolt which secures the plate has a fulcrum in the oversized hole, a forked adjuster and is used to adjust the position of the plate.

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