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US Patent: 466,195
Pipe Tongs
Patentee:
Charles F. Spery - Hermann, MO

USPTO Classifications:
81/109, 81/134

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Chas. D. Moody
A. Bonville
Edward W. Furrell

Patent Dates:
Applied: Oct. 19, 1891
Granted: Dec. 29, 1891

Patent Pictures:
Charles F. Spery Pat. Dec. 29, 1891
USPTO pdf tiff
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Description:
The wrench has a swinging hook-jaw, with an adjustable pivot point including a pawl that engages a rack in an elongated slot in the handle. A known example matches the patent drawing, but is not marked. Ken Cope's "American Wrench Makers 1830-1930" assumes Spery produced them.

Spery's "pliers-type" pipe tongs (pat. No. 444,923) incorporates a spring-loaded pawl as a movable fulcrum.

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