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US Patent: 441,188
Pipe Wrench
Patentee:
William E. Murbarger (exact or similar names) - Indianapolis, IN

USPTO Classifications:
81/101, 81/136, 81/90.9

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench handle components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. B. Griffith
Gustav Bohn
C. P. Jacobs

Patent Dates:
Applied: Aug. 19, 1889
Granted: Nov. 25, 1890

Patent Pictures:
William E. Murbarger patent November 25, 1890
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Description:
The patent is for the swinging handle with its cam end inside the frame carrying the adjustable jaw. The patent describes how this handle would interact with the rack and pawl quick-adjust and the screw adjust jaws shown in the two variants.

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