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US Patent: 99,275
Improvement in Bench-Planes
Double-adjustable Mouthpiece
Patentee:
Louis D. Tredway - St. Louis, MO

USPTO Classifications:
30/490

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Geo. H. Pearson
James Campbell
Thomas Keyes
F. D. Lovell

Patent Dates:
Granted: Jan. 25, 1870

Patent Pictures:
USPTO pdf tiff
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Description:
A metallic mouthpiece for wooden planes. It has both a horizontal and vertical screw adjusters fitted to the mouthpiece. The vertical screw is a locking screw, and the horizontal one provides mouth adjustment. Inventor claims the horizontal screw also prevents the mouthpiece from being pushed back into the cutter when hitting a knot.

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