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US Patent: 1,941,565
Socket Wrench
Patentee:
Sigmund Mandl (exact or similar names) - Milwaukee, WI

USPTO Classifications:
173/93.7, 29/275, 81/121.1, 81/466

Tool Categories:
wrenches

Assignees:
Blackhawk Mfg. Co. - Milwaukee, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 20, 1933
Granted: Jan. 02, 1934

Patent Pictures:
Sigmund Mandl pat. January 2, 1934
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Description:
The wrench is essentially a robust nut with a striker face. It would be driven by a hammer and punch, and would rely on shock to loosen or tighten a nut which would then be free to be turned by more conventional wrenches.

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