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US Patent: 122,916
Improvement in Ratchet Wrenches
Improvement in Rotating Wrenches
Patentee:
Rufus S. Sanborn (exact or similar names) - Rockford, IL

USPTO Classifications:
81/160, 81/57.32, 81/58.3

Tool Categories:
wrenches : ratchet wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. C. Brecht
Wm. G. Henderson
H. N. Baker
S. Wheeler

Patent Dates:
Applied: Nov. 29, 1871
Granted: Jan. 23, 1872

Patent Pictures:
Rufus S. Sanborn Pat. Jan. 23, 1872
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Description:
The ratchets have double adjustable parallel or angular jaws. The center is hollow to allow for turning nuts on long bolts; the double adjustable jaws allow the work piece to be centered.

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