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US Patent: 398,989
Wrench
Patentee:
Joseph Tomlinson (exact or similar names) - Folsom, CA

USPTO Classifications:
279/108, 279/77, 81/116, 81/177.1

Tool Categories:
wrenches : brace wrenches
wrenches : socket wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Ida L. Tomlinson
Lewis E. Tomlinson
Frank Tomlinson
Henry Plindkamp

Patent Dates:
Applied: Jun. 30, 1888
Granted: Mar. 05, 1889

Patent Pictures:
Joseph Tomlinson patent March 5, 1889
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Description:
Wedge blocks attached to the handle / shank slide in the frame to close the jaws. Springs hold the jaws open against the wedge block. A thumbscrew in the frame holds the adjustment. The handle can be removed to allow the wrench to operate in a brace.

Improved by pat. no 422,662 on March 4, 1890.

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