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US Patent: 1,999,076
Pipe Wrench
John W. Bauman - Sassamansville, PA
Stanley W. Bauman - Sassamansville, PA
Irwin W. Bauman - Bluffton, OH

USPTO Classifications:
81/103, 81/145

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


John W. Bauman and Sons - Sassamansville, PA


Patent Dates:
Applied: Apr. 05, 1933
Granted: Apr. 23, 1935

Patent Pictures: [ 1 | 2 ]
John W. Bauman et. al. Patent April 23, 1935.
USPTO pdf tiff
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The movable jaw has rack teeth on one surface. A spring loaded toothed lever or lever and toothed piece in combination engage with the rack teeth to hold the adjustment. The patent drawing show three alternate versions. The production version uses the lever between the shank of the movable jaw and the wrench handle.

Produced as the BAUMO pipe wrench.

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