US Patent: 650,742


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US Patent: 650,742

Wrench

Patentee:

Elbert R. Allen (exact or similar names) - New Haven, CT

USPTO Classifications:

81/116

Tool Categories:

wrenches : axle nut wrenches

Assignees:

None

Manufacturer:

Elbert R. Allen - New Haven, CT

Witnesses:

George P. Smith

M. S. David

Gladys L. Thompson

Patent Dates:
Applied:	Sep. 28, 1899
Granted:	May 29, 1900

Patent Pictures:

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Description:

The wing nut screw ends in a taper which bears against a beveled surface on the movable jaw to close the wrench. According to Ken Cope's "American Wrench Makers 1830-1930" Allen produced this wrench at New Haven, CT.