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US Patent: 2,210,274
Wrench
Patentee:
Oscar Becklin - Los Angeles, CA

USPTO Classifications:
81/91.1, 81/91.2, D8/23

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Balin Tool Co. - Los Angeles, CA
Universal Metal Prods. - Los Angeles, CA

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 23, 1937
Granted: Aug. 06, 1940

Patent Pictures:
Oscar Becklin Patent August 6, 1940. Example marked Balin Tool Co. from Vern Nail collection.
USPTO pdf tiff
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Description:
This self-adjust wrench design is shown in the patent drawings as either a pipe or nut wrench. The adjusting linkage provides positive motion in opening and closing the wrench opening; the spring would tend to close the wrench opening.

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