An engraving depicting a device collecting dust in flour mills, sawmills and chemical works. Exhaust fans force a current of air into the cone at A. The current of air revolves in the cone. The dust is left on the sides and falls out at the bottom, B, while air escapes through the top at C. Dated 19th century.

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Details

Creative#:

TOP25359103

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

No

Property Release:

No

Right to Privacy:

No

Same folder images:

Same folder images