Patent Model - Improvement in Machines for Boring Brush-Blocks
Maker and role
Albert Nawadny (b.1843, d.1906), Patentee
Production date
Nov 12 1878
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Object detail
Media/Materials
Cast iron, brass, paint
Measurements
12 x 11 x 7 3/4" (30.5 x 27.9 x 19.7cm)
Description
Nawadny's invention "relates to a simple mechanical machine whereby any desired number of holes may be drilled in close proximity to one another, and hence it is more especially adapted to the drilling of brush-backs, &c." (Patent Number 209,828)
Collection
Object number
2015.14.2738a-c
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