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US Patent: 2,742,809
Guide For The Movable Jaw of a Pipe Wrench
Hannes Brynge - Fannalund, Enkoping, Sweden
Gunnar Brynge - Fannalund, Enkoping, Sweden

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches

Aktiebolaget B. A. Hjorth & Co. - Stockholm, Sweden

Not known to have been produced

none listed

Patent Dates:
Applied: Nov. 10, 1954
Granted: Apr. 24, 1956

Patent Pictures:
Hannes Brynge and Gunnar Brynge patent April 24, 1956
USPTO pdf tiff
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The focus of the patent is an enclosed frame structure for the movable jaw of a "Stillson" type pipe wrench, and internal springs to support the jaw.

A pipe wrench marked in part "BAHCO III / PATENT" bears strong resemblance to the general appearance of this design, but has a different provision for a spring.

Patent nos. 454,612, 805,946, 1,055,742, 1,276,093, 2,302,633, and 2,513,956 are cited as references. Corresponding foreign patents CA-535,689, GB-753,198, FR-1,111,897 etc. [can be found through ESPACENET] do not have comparable reference lists.

B. A. Hjorth & Co. is better known as BAHCO.

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