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US Patent: 305,920
Marker for Weather-Boards, Flooring, and Jambs
Patentee:
John Hamm (exact or similar names) - Memphis, KS

USPTO Classifications:
33/411

Tool Categories:
layout tools : scribes : clapboard markers
layout tools : squares : miter squares
layout tools : squares : bevel squares
layout tools : squares

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Elias H. Weddle
Stephen D. Miller
W. W. Hollingsworth
A. G. Lynn

Patent Dates:
Applied: Jul. 09, 1884
Granted: Sep. 30, 1884

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler
Description:
This is a real gadget-- it is a basic scribe hook, but with a cutting knife on each side to save the user the drudgery of having to turn the turn the tool end-fo-end when marking opposite ends of the board.

Even more amazing, the tool is split in half and hinged, with a sliding pivot arm to hold the arms at a specified angle. This allows the same tool to be used as a try square, miter square, or bevel gage, and still take advantage of hte sliding knives.

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