The fan case is provided with valves, H, so that not for the resistance of the air and the rotation of effect the object are all combined in the machine here if the current of air be greater for the kind or qual- the earth upon its axis, the stone would descend with constantly increasing velocity… … PELTON’S THRASHER AND, SEPARATOR. to a revolving toothed cylinder contained in the case, valves can be adjusted by means of levers and weight same movements and would thus continue to oscil- A, and driven by the belt over the pulley, B. This and the quantity of air or power of the blast can thus…
Internet Archive · Public domain (published before 1931). Free to use for anything.