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US Patent: 266,646
Marking-Gage
Patentee:
Freeman H. Rossman - Wappingers Falls, NY

USPTO Classifications:
33/18.1, 33/42

Tool Categories:
layout tools : marking gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fred G. Dieterich
Charles H. Baker
Arlan Smith
H. Clay Abel

Patent Dates:
Applied: Jun. 13, 1882
Granted: Oct. 31, 1882

Patent Pictures:
USPTO pdf tiff
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Description:
This is a somewhat strange piece, with a couple of very unusual features. The gage uses a reversible head with curved and straight faces much like the Ames Patent (70937), but adds a second reference face in the shape of a cylinder on the end of the arm.

The patent claims are worded in a very confusing way, such that I can't really figure out how this tool actually works. The inventor makes claims about marking holes for draw-boring mortises and marking off tapered edges, but I can't see how this would work.

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