Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 208
ACHINES. LLOYDS NOISELESS FAN. A variety of ventilators or blow-ing machines were present in theExposition, of which a numberwere constructed substantially onthe same principle as the centrifu-gal pumps. One of these is repre-sented in the accompanying fig-ures, the first of which shows onlythe… … 192 PARIS UNIVERSAL EXPOSITION. nected by a series of curved partitions extending from the centre tothe circumference. The cones are open about the vertices, and an axisof revolution supports the whole by being the common origin of all thecurved partitions. This drum rotates within a closed box,…
Machinery · Scientific apparatus and instruments
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