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US Patent: 171,999
Pipe-Wrench
Improvement in Pipe-Wrench or Tongs
Patentee:
William Crumbie - Rouseville, PA

USPTO Classifications:
81/90.4, 81/DIG9

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
Oil Well Supply Co. - Bradford, PA

Witnesses:
Philip W. Hale
A. L. Van Ness
James J. Johnston
A. C. Johnston

Patent Dates:
Applied: Jun. 17, 1874
Granted: Jan. 11, 1876

Patent Pictures: [ 1 | 2 ]
William Crumbie Pat. January 11, 1876
USPTO pdf tiff
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Description:
This improvement on William C. Abbe's Aug. 20, 167 patent (no. 67,937) has smooth jaw faces with a single adjustable "tooth." A sliding latch prevents the jaws from swinging far enough to disengage.

"Crumbie's Tongs" appear in an 1892 Oil Well Supply Company catalog, and some known examples without the sliding latch have "O. W. S. Co." forged in the head parts. The design also appears marked NORRIS BROTHERS / ROBINSON, ILLINOIS.

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