1851 Great Exhibition: Official Catalogue: Class IX.: W. Service
122A. SERVICE, W., 8 Rutland Terrace, Hornsey Road, Holloway — Inventor.
Archimedean sifting machine. The filling and discharging apparatus consists of a spiral passage formed throughout the length of a wire cylinder, and revolving with the cylinder; and an arrangement for varying the action of the sifter.
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