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US Patent: 1,599,399
Carl Bjornson - Bentley, AB Canada
Emil Bjornson - Bentley, AB Canada
Sigfred Bjornson - Bentley, AB Canada

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : pipe wrenches

Joseph Emmanuel Adams - Bentley, AB Canada
Carl Bjornson - Bentley, AB Canada
Emil Bjornson - Bentley, AB Canada

Mechanics Wrench and Tool Company - Marshalltown, IA

R. E. Wise

Patent Dates:
Applied: Jun. 23, 1923
Granted: Sep. 07, 1926

Patent Pictures: [ 1 | 2 ]
C. , E., and S., Bjornson patent September 7, 1926
USPTO pdf tiff
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The adjustable jaw is held by a pawl with a spring. In the patent drawing, the pawl is moved by a peg extending through the side of the frame. In the produced wrench, the pawl extends as a lever toward the end of the handle. KWIKSET A.G. PIPE WRENCH PAT. SEPT. 7, 1926 information transcribed from an advertising brochure reprinted in the June 1997 Missouri Valley Wrench Club Newsletter. Joe Adams and Archie Gray of Marshalltown, Iowa are the A.G.

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