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US Patent: 426,161
Wrench
Patentee:
Charley Calven Augustine - Muscatine, IA

USPTO Classifications:
81/58.4

Tool Categories:
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. C. Wurdeman
C. Strohm
A. W. Scott
W. S. Duvall

Patent Dates:
Applied: Oct. 09, 1889
Granted: Apr. 22, 1890

Patent Pictures:
Charley C. Augustine patent April 22, 1890
USPTO pdf tiff
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Description:
Interchangeable heads, each capable of fitting several sizes of nuts. The handle must be disassembled to change heads. The spring-loaded lever operates a pin that fits holes in the circumference of the interchangeable heads. Disengaging the pin from the head allows the head to rotate.

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