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US Patent: 130,278
Improvement in Pipe-Tongs
Patentee:
William Campbell - Quincy, IL

USPTO Classifications:
81/178, 81/185.1, 81/423

Tool Categories:
wrenches : pipe wrenches : pipe tongs
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Bay State Iron Works - Erie, PA

Witnesses:
William N. Rentfrow
Thomas T. Woodruff
A. Ruppert
E. A. Newman

Patent Dates:
Granted: Aug. 06, 1872

Patent Pictures:
William Campbell patent August 6, 1872
USPTO pdf tiff
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Description:
The patent is for a hard "die" which could be rotated to present new wearing faces, for multiple pivot holes and a movable bolt for the pivot, and for a slotted handle which can partially enclose the second handle.

A known example marked "ACME PIPE TONGS PAT. AUG. 6. 1872" includes features shown in C. H. Lovrien's Movember 9, 1880 patent (no. 234,304). Manufacturer identified from a mention in the 1884 "History of Erie County," which notes the Bay State Iron Company produced the ACME CUBIC PIPE TONGS. An ACME PIPE TONGS marked with the Nov. 9, 1880 patent date has been associated with manufacturer Noble, Hall and Co.

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