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US Patent: 210,698
Pipe-Tongs
Patentees:
Oliver B. Lay (exact or similar names) - Oil City, PA
William L. Lay (exact or similar names) - Oil City, PA

USPTO Classifications:
81/178, 81/423

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
Eaton, Cole and Burnham - Bridgeport, CT

Manufacturer:
Eaton, Cole and Burnham - Bridgeport, CT

Witnesses:
W. R. Edelen
J. N. Robertson
F. W. Hay
James C. Boyce

Patent Dates:
Applied: Feb. 23, 1878
Granted: Dec. 10, 1878

Patent Pictures: [ 1 | 2 | 3 ]
Oliver B. Lay (deceased) patent Dec. 10, 1878
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Description:
The patented feature is a slightly tapered rectangular or triangular bit which can be driven out and rotated to provide three or four sharp biting surfaces before it needs to be sharpened or replaced. This feature appeared in other tongs type pipe wrenches.

1884 and 1892 OIL WELL SUPPLY catalogs list "LAY'S PATENT TONG - all sizes from 3/4 to 12 inch" along with "extra bits." A known example is a 78 inch monster that weighs over 80 pounds.

Corresponding British patent GB-187803666 was registered Sept. 17, 1878.

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