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US Patent: 551,285
Pipe Wrench
Patentee:
George L. Ives - Kalamazoo, MI

USPTO Classifications:
81/132, 81/186

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Walter S. Wood
Marian I. Longyear

Patent Dates:
Applied: May 18, 1895
Granted: Dec. 10, 1895

Patent Pictures:
George L. Ives patent December 10, 1895
USPTO pdf tiff
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Description:
The set screw acts as an adjustment lock; the spring inside the set screw holds the adjustment pawl in engagement with rack teeth on the main shank when the set screw is retracted.

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