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US Patent: 227,304
Carriage-Wrench
Patentee:
Edwain Augustus Robbins (exact or similar names) - Boston, MA

USPTO Classifications:
81/118

Tool Categories:
wrenches : axle nut wrenches

Assignees:
Edwin A. Robbins - Boston, MA
Mitchell Willis - Boston, MA

Manufacturer:
Edwin A. Robbins - Boston, MA

Witnesses:
H. S. Talbot
W. R. Marble
Mitchell Willis
Sylvenus Walker

Patent Dates:
Applied: Mar. 13, 1880
Granted: May 04, 1880

Patent Pictures:
Edwin A. Robbins Pat. May 4, 1880
USPTO (New site tip)
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Description:
The second of Robbins' patents for a "T" handle adjustable socket axle nut wrench. The others are 214,455 and 257,072.

An article in the March 2026 Missouri Valley Wrench Club Newsletter reviews the Robbins patents and shows examples of corresponding wrenches.

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