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US Patent: 1,113,389
Wrench
Patentee:
Frederick E. Walden (exact or similar names) - Worcester, MA

USPTO Classifications:
81/131, 81/177.6

Tool Categories:
wrenches : alligator wrenches

Assignees:
Walden Tool Co. - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
E. M. Churchill
Norman J. MacGaffin
A. B. Upham
H. L. Whittlesey

Patent Dates:
Applied: Mar. 08, 1912
Granted: Oct. 13, 1914

Patent Pictures:
Frederick E. Walden patent October 13, 1914
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Description:
Two shanks are bound by a flat helix wire. The end inserted in lengthwise half slots in the two shanks keeps them aligned; the other end can be pulled out from cross slots sufficiently to allow one shank to slide in and out for size adjustment. The jaws form an "alligator" wrench.

Compare this to the SHAW WRENCH (pat. no. 956,280) and Walden's March 9, 1920 patent no. 1,333,517.

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