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US Patent: 137,310
Wrenches
Double-Action Wrench
Patentee:
Peter E. McIntosh (exact or similar names) - Chicago, IL

USPTO Classifications:
81/61

Tool Categories:
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Calvin DeWolf
Peter H. Witt
Samuel J. Parker
Watson E. Earle
Patent Dates:
Applied: Jan. 04, 1872
Granted: Apr. 01, 1873

Patent Pictures:
Peter E. McIntosh Pat. April 1, 1873
USPTO (New site tip)
Google Patents
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Description:
"Pumping" the side handle imparts motion to the ratchet through two pawls which alternately engage teeth on the ratchet.

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