Patent Model - Improvement in Machines for Threading Nuts

Maker and role
Orlando Briggs (b.1832, d.1896), Patentee
Lewis Briggs, Patentee
Orlando Briggs (b.1832, d.1896), Assignor
Lewis Briggs, Assignee
 Production date
Apr 15 1873
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Object detail

Media/Materials
Cast iron, paint
Measurements
10 x 10 1/2" (25.4 x 26.7cm)
Description
This invention "relates to a machine for cutting the thread in nut-blanks automatically..." (Patent Number 137,757)
Collection
Rothschild Patent Model Collection
Object number
2015.14.1556a,b
Currently on display?
No
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