Patent Model - Improved Hand-Drill
Maker and role
William Burch (b.1826, d.1894), Patentee
Production date
May 26 1868
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Object detail
Media/Materials
Steel
Measurements
5 3/4" (14.6cm)
Description
Burch claims as his invention "the combination and arrangement of the helical brake with the drill-shaft and the head of the operative lever..." (Patent Number 78,183)
Collection
Object number
2015.14.868
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Maker
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