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US Patent: 2,304,072
Joseph B. Boos - Kansas City, MO
Lyal R. Boos - Kansas City, MO

USPTO Classifications:
81/108, 81/169

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : pipe wrenches

Lyal R. Boos - Kansas City, MO
Robert H. Miller - Kansas City, MO

Not known to have been produced


Patent Dates:
Applied: Apr. 17, 1939
Granted: Dec. 08, 1942

Patent Pictures:
Joseph B. Boos patent December 8, 1942
USPTO pdf tiff
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Turning the handle adjusts the jaw. The patent shows a spring-tensioned hook jaw for gripping pipe. The patent stresses the ease of making the component parts. This pipe wrench version is not known; a nut wrench version with either smooth or toothed jaws like design patent D130,015 is fairly common.

A similar design marked SUPER SERVICE MFG. CO. K.C. MO. PAT. PENDING matches Guy W. Hawkins' Oct. 21, 1941 design patent (D130,024).

Boos' Pat. no. 1,946,669 probably corresponds to another SUPER SERVICE WRENCH.

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