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US Patent: 451,991
Wrench
Carriage-Wrench
Patentee:
James A. Abbots (exact or similar names) - Seekonk, MA

USPTO Classifications:
81/136, 81/382, 81/383, 81/409.5

Tool Categories:
wrenches : axle nut wrenches

Assignees:
James A. Abbots - Seekonk, MA
Sarah E. Hilton - Providence, RI
David Nelson Ryder - Providence, RI
Richard Henry Ryder - Pawtucket, RI

Manufacturer:
Not known to have been produced

Witnesses:
Chas. F. Schmelz
Edward Card
Harmon S. Babcock
Socrates Scholfield

Patent Dates:
Applied: Apr. 30, 1890
Granted: May 12, 1891

Patent Pictures:
James A. Abbots patent May 12, 1891
USPTO (New site tip)
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Description:
The wrench features an adjustable jaw with a lever and rod "over-center" latching feature to lock onto an axle nut, and lugs on the side of the fixed jaw that form a wide base to hold the axle nut up off the ground.

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