Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 407
of the tine gold which passesfi-om the first machine is gathered. In most cases a shallow round basin, of about 4 feet diameter, isappended, in which a rake moves around with a vertical axis, gently sturing the sediment which maysettle from the passing water. It retains only the heavy particles. In…
Mechanical engineering · Mechanics · Engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
