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US Patent: 436,073
Nut Wrench
Benjamin Clow - Jersey City, NJ
George E. Clow - Jersey City, NJ

USPTO Classifications:
81/169, 81/180.1, 81/DIG.3

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


Rouse Mfg. Co. - Jersey City, NJ

Samuel Ker
David P. Wolhaupter
Ludwig F. Seggel
Gustav Schumann

Patent Dates:
Applied: Jun. 07, 1890
Granted: Sep. 09, 1890

Patent Pictures:
Benjamin Clow and George E. Clow patent September 9, 1890
USPTO pdf tiff
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The handle connects to the nearer jaw by a flange; turning the handle extends the further jaw. A primary feature of the patent is the internal adjustable friction spring which helps hold the adjustment. Produced as CLOW'S BOSS wrench.

A known 5 inch long example is marked "ROUSE MFG. CO. JERSEY CITY, NJ" and "CLOWS PAT. SEPT. 9, 1890"

In corresponding Canadian patent CA-35,136, George E. Clow's address is given as Pittsfield, MA.

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