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US Patent: 168,406
Ratchet-Wrench
Patentee:
Franklin S. Ober - Washington, DC

USPTO Classifications:
81/128, 81/60

Tool Categories:
wrenches : ratchet wrenches

Assignees:
Franklin S. Ober - Washington, DC
Walton Brothers - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
P. C. Dieterich
W. C. McArthur
C. H. Watson
H. A. Hall

Patent Dates:
Applied: Aug. 04, 1875
Granted: Oct. 05, 1875

Patent Pictures:
Franklin S. Ober Pat. October 5, 1875
USPTO pdf tiff
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Description:
The patent is for the adjustable "socket" within a ratchet head. The jaw mechanism employs springs and pawls to close the jaws upon a nut or bolt to be turned. The closing action is driven by moving the handle; the pawl mechanism can be disengaged to release the grip or expand the jaw opening.

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