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US Patent: 305,920
Marker for Weather-Boards, Flooring, and Jambs
John Hamm - Memphis, KS

USPTO Classifications:

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


Not known to have been produced

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 pdf tiff
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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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