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US Patent: 538,525
Ratchet Wrench
Patentee:
Albert W. Kleinfeldt (exact or similar names) - Oshkosh, WI

USPTO Classifications:
81/113, 81/63.1

Tool Categories:
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. Harvey Muzzy
L. Severance
W. H. Groff
Charles J. Schmitt

Patent Dates:
Applied: Jan. 28, 1895
Granted: Apr. 30, 1895

Patent Pictures:
Albert W. Kleinfeldt patent April 30, 1895
USPTO (New site tip)
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Description:
The ratchet selection mechanism works by lifting one or the other of the spring-loaded pawls out of engagement with the teeth on the head.

The jaws are adjustable by a screw and slide in tapered slots in the head.

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