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US Patent: 609,762
Wrench
Patentee:
Logan W. Everhart (exact or similar names) - Chanute, KS

USPTO Classifications:
81/147, 81/186

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

Assignees:
Logan W. Everhart - Chanute, KS
Zachary T. Postlethwaite - Chanute, KS
Alonzo W. Postlethwaite - Chanute, KS

Manufacturer:
Not known to have been produced

Witnesses:
R. A. McPherson, Jr.
E. McCormic
B. F. Shinn
Mary Dudrow

Patent Dates:
Applied: May 22, 1897
Granted: Aug. 23, 1898

Patent Pictures:
Logan W. Everhart patent August 23, 1898
USPTO (New site tip)
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Description:
Quick adjust; the movable jaw has internal rack teeth and a spring. The rack teeth engage rack teeth on the main shank.

Having the jaws slightly inclined to the shank, the force is directed in line with the teeth of the adjusting rack.

Corresponding Canadian patent no. CA-57,238 was issued August 28, 1897.

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