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US Patent: 1,430,004
Method of Making Socket Wrench Heads
Patentee:
Hjalmar G. Carlson - Worcester, Worcester County, MA

USPTO Classifications:
76/114

Tool Categories:
tool making : making wrenches
wrenches : socket wrenches

Assignees:
Rockwood Sprinkler Co. - Worcester, Worcester County, MA

Manufacturer:
Not known to have been produced

Witnesses:
C. F. Wesson

Patent Dates:
Applied: Jun. 05, 1919
Granted: Sep. 26, 1922

Patent Pictures:
Halmar G. Carlson patent Sept. 26, 1922
USPTO pdf tiff
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Description:
The patent describes processes and techniques to form wrench sockets from sheet metal blanks, and attach them to handles.

Application renewed 20 Feb 1922

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