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US Patent: D34,139
Design for a Firmer Chisel
Patentee:
James Swan - Seymour, CT

USPTO Classifications:
30/167, D8/47, D8/DIG8

Tool Categories:
woodworking tools : chisels : firmer chisels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Lewis A. Camp
G. E. Matthies

Patent Dates:
Applied: Jan. 24, 1901
Granted: Feb. 26, 1901

Patent Pictures:
USPTO pdf tiff
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Description:
Design is for the cross section shape of the chisel blade, "straight sides inclining slightly toward each other from edge to base and inclining slightly inward from bottom to top, bottom being flat, the very top consisting of two planes lying at a very obtuse angle to each other and intersecting at a center line which inclines slightly toward the bottom from the base forward..."

Term of patent is 14 years.

James Swan also patented a chisel design several weeks later with a semi-circular cross section, D34215.

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