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US Patent: 1,261,540
Wrench
Patentee:
Hughey V. Hughes - Miami, AZ

USPTO Classifications:
81/129.5, 81/131, 81/145, 81/146, 81/165, 81/77

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
L. B. Marshall
E. Thorpe

Patent Dates:
Applied: Apr. 14, 1917
Granted: Apr. 02, 1918

Patent Pictures:
Hughey V. Hughes patent April 2, 1918
USPTO pdf tiff
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Description:
Open end wrench with opening size adjustable by shifting position of wrench halves. This adjustment can be accomplished by one hand. The halves are connected by a central shaft and compression springs. The adjustment is held by meshing rack teeth and flat compression springs to keep the rack teeth meshed.

Cited in patent no. 2,484,492.

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