US Patent: 991,681 - Carriage wrench


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US Patent: 991,681

Carriage wrench

Patentee:

Chester A. Winchenbach (exact or similar names) - Waldboro, ME

USPTO Classifications:

76/5.4, 81/147, 81/384, 81/391, 81/426.5

Tool Categories:

wrenches : axle nut wrenches

Assignees:

None

Manufacturer:

Chester A. Winchenbach - Waldboro, ME

Witnesses:

Patent Dates:
Applied:	Aug. 15, 1910
Granted:	May 09, 1911

Patent Pictures: [ 1 | 2 ]

Chester A. Winchenbach Patent May 9, 1911

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Description:

The outer jaw segment is adjustable. It has teeth that engage rack teeth cut in the wrench frame. The inner jaw pivots. It is moved by the auxiliary lever. The wrench frame and lever are made of bent flat iron. Known example marked only with the patent date.