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US Patent: 317,924
Wrench
Patentee:
Amos Call - Springfield, MA

USPTO Classifications:
81/93

Tool Categories:
wrenches : pipe and nut combination wrenches

Assignees:
Bemis and Call Hardware and Tool Company - Springfield, MA

Manufacturer:
Not known to have been produced

Witnesses:
H. A. Chapin
Chas. Bill
J. D. Garfield

Patent Dates:
Applied: Oct. 13, 1884
Granted: May 12, 1885

Patent Pictures:
Amos Call patent May 12, 1885
USPTO pdf tiff
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Description:
The patent describes a combination pipe and nut wrench comprised of separate pipe and nut jaws sliding on a common shank, adjusted by a nut or sleeve on the shank. The only difference between this design and the parallel patent (no. 317,923) is that the jaws have a connecting pivot and only one jaw is connected to the adjusting screw.

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