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US Patent: 469,701
Wrench
Improvements in Ratchet-Wrenches
Patentee:
Andrew Hullinger (exact or similar names) - Bolivar, OH

USPTO Classifications:
81/177.85, 81/185, 81/62

Tool Categories:
wrenches : wrench components : wrench sockets
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. S. Duvall
Chas. A. Ford
Henry Huck
Milo McFadden

Patent Dates:
Applied: Apr. 16, 1891
Granted: Mar. 01, 1892

Patent Pictures:
Andrew Hullinger patent March 1, 1892
USPTO (New site tip)
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Description:
The ratchet is reversible. Interchangeable sockets for the head have a flange on one side, and are held in place by a keeper spring that clips into notches on the other side. A pin in the handle acts as a stop to hold the pawl-shifting lever in position.

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