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US Patent: 206,733
Henry H. Hill - Moline, IL

USPTO Classifications:
81/155, 81/174

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


Moline Malleable Iron Co. - Moline, IL

George H. Hill
Benjamin W. Hill
Will W. Dodge
Donn J. Twitchell

Patent Dates:
Applied: Dec. 29, 1877
Granted: Aug. 06, 1878

Patent Pictures: [ 1 | 2 | 3 ]
Henry H. Hill patent August 6, 1878
USPTO pdf tiff
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This malleable iron adjustable wrench has the shank with the hammer head & jaw sliding through a loop on the back of the second jaw. The drawing shows the shank with the head having half-circle threads that are engaged by the adjusting nut. Known examples marked "PAT*D AUG 6, 78" have the adjuster enclosed in a loop, with threads all around the shank of the movable jaw. An 1885 MOLINE MALLEABLE IRON CO. advertisement in WESTERN MANUFACTURER shows HILL'S WRENCH.

An adjusting nut & threaded half-circle shank similar to the one shown in this patent appear on adjustable malleable iron wrenches marked with patent dates corresponding to Byron C. Bradley's patents (nos. 140,111 & 155,139). See also patent no. 166,020 for another similar design.

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