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US Patent: 390,402
Pipe Wrench
Patentee:
James Rose - Franklin, MA

USPTO Classifications:
81/103, 81/173

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. F. Piper
W. E. Piper
S. N. Piper
C. F. Daniels

Patent Dates:
Applied: Jun. 21, 1888
Granted: Oct. 02, 1888

Patent Pictures:
James Rose patent October 2, 1888
USPTO pdf tiff
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Description:
The frame holding the screw adjustment and the movable jaw attaches to the main bar at a single point. A spring on the main shank connects to the base of the adjusting screw.

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