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US Patent: 271,549
Carriage Wrench
Patentee:
David True - Salisbury, VT

USPTO Classifications:
279/102, 279/155, 279/76, 279/79, 81/124.1, 81/124.7, 81/125

Tool Categories:
wrenches : axle nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry W. Williams
Joseph Ishbaugh
B. W. Williams

Patent Dates:
Applied: May 12, 1882
Granted: Jan. 30, 1883

Patent Pictures:
David True patent January 30, 1883
USPTO pdf tiff
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Description:
The socket has springs on all four sides to grasp the nut; the balls on the handle ends provide momentum for "spinner" action and a broad striking surface for breaking the nut loose and final tightening. A plunger in the center will release the nut from the springs' grasp. See also no. 291,961 and successive True patents.

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