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US Patent: 2,388,580
Locking parallel jaw adjustable wrench
Francis A. Snell - Chenango Forks, NY

USPTO Classifications:
81/377, 81/402

Tool Categories:
wrenches : pliers type wrenches : locking pliers

Botnick Motor Corporation - Binghamton, NY

Botnick Motor Corporation - Binghamton, NY

none listed

Patent Dates:
Applied: Nov. 01, 1944
Granted: Nov. 06, 1945

Patent Pictures: [ 1 | 2 ]
Francis A. Snell patent November 6, 1945
USPTO pdf tiff
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Parallel jaw locking pliers wrench, used together with design patent no. D143,941. The secondary link in this patent appears in the 9 inch version; the 7 inch wrench matches the design patent -- see the 2nd photo. Both wrenches are made primarily of flat stampings riveted together. The fixed jaw is a forged piece and the handle insert is red plastic.

The screw adjustment sets the size. 7 inch opens to 3/4 inch; 9 inch opens to 1 inch; 11 inch opens to 1 1/2 inch.

Patent no. 2,478,728 is a subsequent evolution.

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