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Fan-blow′--er.

A blower in which a series of vanes fixed on a rotating shaft creates a blast of air for forge purposes, or a current for draft or ventilation. In the example (A, Fig. 1918), the machine is applied to removing shavings from the cutters of planing-machines. The rotation of the fan, by belt and pulley, in its box a, causes a downward draft through the pipe b, connected with which are the horizontal pipes f f and vertically adjustable pipes e e, having flaring mouths directly over the cutters d of the planers; the shavings are drawn upward through the pipes e, and carried through f b, when, passing through the blower, they are driven through its mouth c into a chute which takes them to an apartment whence they may be removed as required for fuel.

B (Fig. 1918) is intended for intensifying the draft of a furnace d; the products of combustion, being caused to take first an ascending and then a descending course through the curved pipe b, are expelled at c. Blowers are plenum (pressure), or vacuum, which is equivalent to exhaust; either form is used for the various purposes of ventilation, air-draft for furnaces, etc. See also blower; fanning-mill.

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Blowers (1)
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