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US Patent: 729,504
Wrench
Patentee:
George McKercher (exact or similar names) - Jackson, MI

USPTO Classifications:
81/100, 81/DIG.6

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

Assignees:
McKercher Wrench and Tool Co. - Jackson, MI

Manufacturer:
McKercher Wrench and Tool Co. - Jackson, MI

Witnesses:
Geo. A. Hutchinson
Robert Lake
H. U. Ulricksen

Patent Dates:
Applied: Oct. 09, 1902
Granted: May 26, 1903

Patent Pictures: [ 1 | 2 ]
George McKercher Pat. May 26, 1903
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McKercher Pipe Wrench (IRON AGE) - FLICKR
Description:
The adjustable jaw is held in place by a flat spring. The wrench corresponding to this design was produced, marked with the patent date of McKercher's Feb. 13, 1900 patent (no. 643,522).

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