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US Patent: 47,824
Improvement in Carpenters' Gages
Patentee:
Martin Horton - Brooklyn, NY

USPTO Classifications:
33/42

Tool Categories:
layout tools : marking gauges

Assignees:
None

Manufacturer:
Unknown

Witnesses:
M. M. Livingston
C. L. Topliff

Patent Dates:
Granted: May 23, 1865

Patent Pictures:
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Description:
A fairly simple patent, covering the use of a retractable point for one of the mortise marking pins. The point is retractable since it is in fact a screw tip! You back out the screw, and your 2-point gage becomes a single point gage.

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