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US Patent: 825,720
Wrench
Patentee:
John C. Hackett - St. Louis, MO

USPTO Classifications:
81/132, 81/144

Tool Categories:
wrenches : axle nut wrenches

Assignees:
None

Manufacturer:
J. C. Hackett - Racine, WI

Witnesses:
Edw. M. Harrington
Alfred A. Eicks
C. Russell

Patent Dates:
Applied: Oct. 05, 1904
Granted: Jul. 10, 1906

Patent Pictures: [ 1 | 2 ]
John C. Hackett patent July 10, 1906 with J.C. HACKETT RACINE WIS No. 3 wrench
USPTO pdf tiff
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Description:
The movable jaw has a bolt extension through a slot in the main shank, and is held in adjustment by a flat washer with ridged surface that engages similar ridges on the shank, and a threaded handle to tighten the bolt.

One known example marked J.C. HACKETT RACINE WIS.; another J.C. HACKETT with no location indicated.

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