Patent Model - Improvement in Bolts and Nuts
Maker and role
Samuel James (British), Patentee
Production date
Nov 27 1877
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Object detail
Media/Materials
Brass
Measurements
16 1/4 x 15 1/4 x 2 1/4" (41.3 x 38.7 x 5.7cm)
Description
James describes his patent in the following: "My invention consists in a split or severed nut, made with an undercut or barbed screw-thread; and in the combination, with such a nut, of a bolt or screw having corresponding undercut screw-threads..." (Patent Number 197,473)
Collection
Object number
2015.14.2477
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