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US Patent: 54,040
Improvement in Wrenches
Double-Jawed Wrench
Patentee:
Thomas Symonds (exact or similar names) - Portland, ME

USPTO Classifications:
81/186

Tool Categories:
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. H. Winslow
William H. Clifford

Patent Dates:
Granted: Apr. 17, 1866

Patent Pictures:
Thomas Symonds Pat. Apr. 17, 1866
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Description:
The double jaws of the wrench are sized and shaped so that at a given adjustment the wrench will hold a square nut by the sides or corners.

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