US Patent: 537,870 - Gage for Setting Hinges


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US Patent: 537,870

Gage for Setting Hinges

Patentees:

Henry Schroeder (exact or similar names) - St. Louis, MO

Hubert J. Thielen (exact or similar names) - St. Louis, MO

USPTO Classifications:

33/197

Tool Categories:

layout tools : marking gauges : butt gauges

Assignees:

George Krumsick - Washington, MO

Manufacturer:

Not known to have been produced

Witnesses:

F. R. Cornwall

Hugh K. Wagner

Patent Dates:
Applied:	Dec. 04, 1894
Granted:	Apr. 23, 1895

Patent Pictures:

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Description:

This is an interesting tool designed to simplyfy the marking of butt hinge mortises. Once the tool is set up (no trivial task with this design), you strike the back with a hammer to mark the mortise.