Patent Model - Improvement in Machines for Edging, Sizing, and Straightening Non-Cylindrical Metal Bars

Maker and role
Joseph Seaman, Patentee
Production date
Nov 05 1878
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Object detail

Iron, brass
5 1/2 x 12 x 8" (14 x 30.5 x 20.3cm)
Seaman's patent "relates to the edging, straightening, and sizing of iron and steel bars, beams, girders, rails, &c., of irregular or other than cylindrical shape in cross-section, or bars, beams, girders, rails, &c., which in such operation are not rotated on their axes." (Patent Number 209,588)
Object number
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