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US Patent: 598,487
Monkey Wrench
Patentee:
Peter Quarelli (exact or similar names) - Chicago, IL

USPTO Classifications:
81/133, 81/319, 81/323, 81/332, 81/337, 81/357, 81/358, 81/427

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

Assignees:
Peter Quarelli - Chicago, IL
Emilio Longhi - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
P. H. Holland
E. H. Brown
Aug. F. Wendt
Emilio Longhi

Patent Dates:
Applied: Dec. 04, 1897
Granted: Feb. 01, 1898

Patent Pictures:
Peter Quarelli patent February 1, 1898
USPTO (New site tip)
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Description:
A compression spring opens the jaws; the movable jaw is closed by a gear and ratchet operated by a lever handle. A latch is provided to hold the jaws in firm contact with a nut. The main handle has a hand opening, and a screwdriver tip at the end.

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