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US Patent: 305,027
Wrench
Patentee:
Edmond H. St. John (exact or similar names) - Toledo, OH

USPTO Classifications:
81/147

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Phil C. Dieterich
A. B. Dourll
Fitch Dewey
Wm. Cummings

Patent Dates:
Applied: May 10, 1884
Granted: Sep. 09, 1884

Patent Pictures:
Edmond H. St. John patent September 9, 1884
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Description:
The quick-adjust movable jaw has interior teeth that engage a rack on the main bar, and a leaf spring to pull the teeth and rack together. The distinctive shape of the leaf spring is a major component of the patent.

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