Patent Model - Crushing and Grinding Pan for Reducing Ores

Maker and role
Charles Steiger (b.1818, d.1891), Patentee
James Kerr (b.1847, d.Unknown), Patentee
Production date
Feb 15 1881
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Object detail

Tinned sheet iron, paint, brass
4 x 4" (10.2 x 10.2cm)
Steiger and Kerr's invention "relates to certain improvements in the reduction of ores, and in the apparatus employed for that purpose; and it consists in the combination, with what is known as the 'Muller' or 'Hepburn' pan, of a screen or screens, which are fitted into the side of the pan and provided with controlling-gates, so that the pan may be operated continuously, as may be desired." (Patent Number 237,921)
Object number
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