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US Patent: 1,144,049
Butt and Lock Gage
Patentee:
Rudolph Neumann - Indianapolis, IN

USPTO Classifications:
33/44

Tool Categories:
layout tools : marking gauges : butt gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James Kimball
Emma M. Emmhardt
R. N. Jones
A. E. Johnson

Patent Dates:
Applied: Aug. 20, 1913
Granted: Jun. 22, 1915

Patent Pictures:
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Description:
This tool wins the complexity award for butt gages. It features five (!) sliding arms, including two that feature 3-point mortise markers. It is capable of performing all hinge and lock layout for a door, including strike plates and squaring the sides of the mortises.

The three-point markers use the same technique used in the famous 1870 Kenny patent (98,504), where a rod is cut with both left- and right-hand threads

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