Patent Model - Improvement in Machines for Threading Wood-Screws

Maker and role
Benjamin Mason, Patentee
Production date
Jul 27 1875
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Object detail

Iron, paint
16 x 9 x 6 1/2" (40.6 x 22.9 x 16.5cm)
Mason said in his patent: "it will be readily seen that the machine is simple in design, economical in all its parts and arrangements, and that I cut or thread screws with less machinery and intricate or complicated movements than has been done heretofore; and, furthermore, that the severe strain and resultant wear and tear which other machines for like purposes are incessantly subjected to is avoided, and not experienced by my mechanism, even when run at comparatively high velocity." (Patent Number 166,121)
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