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US Patent: 273,170
Monkey-Wrench
ACME Twist Handle
Patentee:
Frederick B. Seymour - Detroit, MI

USPTO Classifications:
81/173

Tool Categories:
wrenches : wrench components : wrench handle components
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Whitman & Barnes - Chicago, IL
George W. Marble - Chicago, IL
Capitol Mfg. Co. - Chicago, IL
Owsley Brothers & Marble - Chicago, IL

Witnesses:
Edwin Sweetser
Aug. G. Chapolin
Sumner Collins

Patent Dates:
Applied: Jan. 12, 1883
Granted: Feb. 27, 1883

Patent Pictures: [ 1 | 2 | 3 | 4 ]
Frederick H. Seymour patent Febr. 27, 1883, with 12 inch Railroad example
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Description:
Handle comprised of a wire or rod bent to form two parallel rods. The adjustable jaw slides on the rods, one of which is threaded to engage an adjusting nut. Manufactured in sizes 4" through 21," with several finishes, and with and without the twist handle.

The patent was also used as the basis for subsequent pipe and nut combination wrench patents -- e.g. no. 447,665, and was "improved on" by patent no. 460,539.

An early iteration of the combination wrench was called HOLLAND'S ACME, but the "Holland" has not been identified.

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