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US Patent: 13,388
Improved Ratchet-Wrench
Patentee:
Alden Graham - Roxbury, MA

USPTO Classifications:
81/111, 81/61, 81/77

Tool Categories:
wrenches : ratchet wrenches
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Atwood & Co. - Boston, MA

Witnesses:
Elliot E. Kellogg
Wm. Gaston

Patent Dates:
Granted: Aug. 07, 1855

Patent Pictures: [ 1 | 2 ]
Alden Graham patent Aug. 7, 1855
USPTO pdf tiff
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Description:
The improvement is the arrangement of adjustable jaws on a ratcheting wrench face. Known examples are unmarked. Manufacturer info. taken from "American Wrench Makers 1830-1930," by Kenneth Cope.

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