Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 439
ventilation are as follows: 1. The introduction of air by means of a pumping ventilator into the eyeof the runner, and thence between the grinding surfaces of the burrs. 2. The use of suction venti-lators, by which the air is exhausted from the eye of the runner toward the skirt. This… … discharge spout must be air-tight. 3. A combination of exhaust and pumping ventilators. 4. Theintroduction of air between the grinding surfaces of the burrs by means of air-channels or slits inthe runner. Ventilation by mingling a current of air with the pulverized grain tends to restore the MINE…
Mechanical engineering -- Dictionaries
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