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US Patent: 132,057
Improvement in Adjustable Slide-Wrenches
Patentees:
Theodore Cooper - Warwick, RI
Orrin W. Cutler - Warwick, RI

USPTO Classifications:
269/213, 269/247, 81/146, 81/170, 81/DIG.4, 81/DIG.6

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

Assignees:
Theodore Cooper - Warwick, RI
Orrin W. Cutler - Warwick, RI
Augustus W. Robinson - Providence, RI

Manufacturer:
Not known to have been produced

Witnesses:
Phil. F. Sarner
Geo. F. Stenz
John H. Stiness
James W. Blackwood

Patent Dates:
Granted: Oct. 08, 1872

Patent Pictures:
Cooper and Cutler Pat. Oct. 8, 1872
USPTO pdf tiff
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Description:
The specifications call this an improvement on the "Magee Wrench" (Pat. No. 98,393, Dec. 28, 1969). The sliding jaw has a quick-adjust gib, and the screw adjust provides the final adjustment for the intervals between the positions provided by the rack notches. The patent includes the shape of the rack notches and the shape of the tension spring.

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