US Patent: 1,553,068


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Wrench

Patentee:

August Edwin Carlberg (exact or similar names) - Worcester, MA

USPTO Classifications:

74/545, 81/121.1, 81/73

Tool Categories:

wrenches : socket wrenches

Assignees:

Walden-Worcester, Inc. - Worcester, MA

Manufacturer:

Walden-Worcester, Inc. - Worcester, MA

Witnesses:

none listed

Patent Dates:
Applied:	Aug. 05, 1922
Granted:	Sep. 08, 1925

Patent Pictures:

A. E. Carlberg patent Sept. 8, 1925

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Description:

The patent covers the extended "loop" providing extra leverage for initial loosening and final tightening with a "speed" brace wrench. Several Walden-Worcester No. 15xx and No. 17xx speeders employed this design.

The "knob" handle end on this tool reflects S.R. Enberg's March 1, 1923 patent no. 1,537,529.

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