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US Patent: 477,228
Wrench
Patentee:
Ebenezer W. Rider - Racine, WI

USPTO Classifications:
81/135, 81/157, 81/158

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
L. S. Kellogg Mfg. Co. - Racine, WI
Racine Wrench Co. - Racine, WI

Witnesses:
Jno. W. Knight
Erastus C. Peck
John Imirie
Frank J. Mahoney

Patent Dates:
Applied: Sep. 01, 1891
Granted: Jun. 21, 1892

Patent Pictures: [ 1 | 2 ]
Ebenezer W. Rider patent June 21, 1892
USPTO pdf tiff
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Rider Lightning Wrench (FLICKR)
Description:
The adjusting screw is mounted on a pivoting block, and held against the rack with a spring. The threads are shaped with a taper and sheer edge to allow the adjusting screw to slide "closed." The hollow handle has an internal spring pushing the movable jaw "open." This provides quick adjustment with the adjusting screw accomplishing final adjustment. The adjusting screw can be lifted completely clear of the rack to fully open the jaw.

Marketed as the "Rider Patent Lightning Wrench."

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