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US Patent: 132,421
Improvement in Carpenters' Gauges
Split-shaft Mortise Gage
Patentee:
Justus A. Traut (exact or similar names) - New Britain, CT

USPTO Classifications:
119/77, 33/44

Tool Categories:
layout tools : marking gauges

Assignees:
None

Manufacturer:
The Stanley Rule & Level Co. - New Britain, CT

Witnesses:
O. S. Kelsey
Jeremy W. Bliss

Patent Dates:
Granted: Oct. 22, 1872

Patent Pictures: [ 1 | 2 ]
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Description:
This patent marks the first appearance of prolific Stanley inventor Justus Traut in the world of marking gages. This particular patent covers the brass "gib" used to protect the arm from the retaining screw, as well as the new mehod of constructing mortise gages with a split shaft and captive slider.

Both of these patented ideas were used on Stanley tools for over 80 years, and the brass shoe is still in use on many gages to this day.

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