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US Patent: 155,139
Byron C. Bradley - Chicago, IL

USPTO Classifications:

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


Crane Bros. Mfg. Co. - Chicago, IL
Pancoast & Maule - Philadelphia, PA

O. W. Bond
E. A. West

Patent Dates:
Applied: Jun. 29, 1874
Granted: Sep. 22, 1874

Reissue Information:
Reissued as RE7,910 (Oct. 16, 1877)

Patent Pictures: [ 1 | 2 ]
Byron C. Bradley Pat. Sept. 22, 1874
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An improvement on Bradley's June 24, 1873 patent (no. 140,111) for a malleable iron pliers type wrench. A known example matching this drawing, with a marking that appears to read "PATD JUNE 24 72" is shown as the 2nd image in the entry for 140,111.

Known examples marked with both patent dates, but with a nut and thread adjustment mechanism resembling the one shown in H.H. Hill's Aug. 6, 1878 patent (no. 206,733) possibly were made by some malleable iron foundry, with markings for a company that supplied wrenches with other equipment.

See also patent no. 166,020 for a similar form.

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