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US Patent: 272,526
Pipe Cutter and Tongs
Patentee:
Joseph Warren Calef (exact or similar names) - North Easton, MA

USPTO Classifications:
81/129, 81/134

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench combination tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fred. G. Dieterich
Wm. Legher
Charles F. Darlington
Benjamin F. Edsall

Patent Dates:
Applied: Jan. 08, 1883
Granted: Feb. 20, 1883

Patent Pictures:
Joseph W. Calef patent February 20, 1883
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Description:
The movable jaw is adjusted by a toggle bolt working on either a hinged linkage or spring linkage. Notches in the handle provide a wider range of size adjustment. The interchangeable pipe jaws and cutter bits are held in the movable jaw by a thumb screw. The handle has open end and tapered box wrench openings.

The comparable Canadian patent is no. CA-16,416 issued Feb. 28, 1883.

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