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US Patent: 1,122,915
Wrench
Patentee:
Hans C. Hallum - Keokuk, IA

USPTO Classifications:
81/185

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
I. N. Tichenor
Aileen Keefe
C. R. Bealle

Patent Dates:
Applied: May 09, 1914
Granted: Dec. 29, 1914

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Pivoting leaves with pins on the back side to keep them in alignment provide size adjustments for a double open-end wrench.

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