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US Patent: 561,274
Tongs for Turning Pipes
John McCarthy Palmer - Marysville, MT

USPTO Classifications:
81/102, 81/103, 81/404, 81/416, 81/426

Tool Categories:
wrenches : pipe wrenches : pipe tongs


Not known to have been produced

William Barclay
Fred Potting
C. H. Raider
H. X. Matthews

Patent Dates:
Applied: Oct. 21, 1895
Granted: Jun. 02, 1896

Patent Pictures:
John McCarthy Palmer patent June 2, 1896
USPTO pdf tiff
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Size adjustment accomplished by an adjusting nut within a pivoting block. The shank of the movable jaw is threaded.

Corresponding Canadian patent no. CA-52,970 issued July 20, 1896 includes a second patentee.

Ken Cope's "American Wrench Makers 1830-1930" cites an 1897 POWER item that implies Palmer intended to produce this wrench along with those in patent nos. 574,624 and 558,304.

James J. Sheehy - patent attorney

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