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US Patent: 1,542,336
Wrench
Patentee:
August Edwin Carlberg - Worcester, MA

USPTO Classifications:
81/124.5, 81/125.1

Tool Categories:
wrenches : socket wrenches

Assignees:
Walden-Worcester, Inc. - Worcester, MA

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Jan. 23, 1922
Granted: Jun. 16, 1925

Reissue Information:
Reissued as RE16,354 (May 18, 1926)

Patent Pictures:
A. E. Carlberg patent June 16, 1925
USPTO pdf tiff
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Description:
The primary focus is the pivoting arrangement for socket wrenches. Patent no. 1,613,976 is another swivel socket patent used by Walden-Worcester.

Moses, Hammond, Morse & Nolte - patent attorneys

Improved upon with patent #1,796,083

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