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US Patent: 1,021,272
Wrench
Patentee:
Abner Shirk (exact or similar names) - De Kalb, IL

USPTO Classifications:
81/100

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jas. K. McCathran
H. F. King
G. S. Cheny
F. B. Poust
Patent Dates:
Applied: Mar. 25, 1911
Granted: Mar. 26, 1912

Patent Pictures:
Abner Shirk patent March 26, 1912
USPTO (New site tip)
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Description:
Quick adjustment; a spring holds the rack teeth on the main shank and movable jaw in engagement.

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