US Patent: 2,206,251


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Wrench

Patentee:

Friedriech Carl Fischer (exact or similar names) - DeWitt, NE

USPTO Classifications:

81/330, 81/384, 81/398

Tool Categories:

wrenches : pliers type wrenches : locking pliers

pliers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Feb. 25, 1939
Granted:	Jul. 02, 1940

Patent Pictures:

F. C. Fischer Pat. July 2, 1940

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Description:

This locking pliers is adjusted by a turnbuckle extending between a lug on the handle containing the fixed jaw, and the movable jaw. The pivot point is a bolt which slides in a slot in the handle with the fixed jaw. The pliers' adjustment would "lock" as the turnbuckle moved past dead center. Shoulders on the two handles provide a "stop" to limit the handles' movement toward each other. Fischer received a subsequent patent (no. 2366015) which completely re-worked the design.