US447909A - Ntover - Google Patents

Description

2 Sheets-Sheet 1;

(No Model.)

J. S.- S-GHOONOVER.

FAN BLOWER.

No. 447,909. Patented Mar. 10, 1.891.

(No Model.) 9 2 sheetssheet 2. J. SCHOONOVER.

FAN BLOWER.

Patented Mar. 10,1891.

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UNITE TATES ATENT ferien.

JAMES SOHOONOVER, OF BUFFALO, NEV YORK, ASSIGNOR TO CHARLES F. VHITOHER, OF SAME PLACE.

lFAN-BLOWER.

SPECIFICATION forming part 0f Letters Patent NO. 447,909, dated. March 10, 1891.

Application led July 2l, 1888. Serial No. 280,649. (No model.)

To all whom, t may concern:

Be it known that I, JAMES S. ScHooNovnR, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Fan-Blowers, of which the following s a specilication.

This invention relates to an improvement in that class of fans in which the action of theY blades whereby the air is expelled tangentially from the fan-case is supplemented by injecting-buckets, whereby the airis injected into the fan-case between the blades.

The object of my invention is to increase the capacity of the fan by increasing the eiliciency of the injecting-buckets and to render the construction of the fan simple and durable.

In the accompanying drawings, consisting of two sheets, Figure l is a side elevation of my improved blower. Fig. 2 is a vertical cross-section of the blower. Fig. 3 is a top plan view of the blower with the casing in section. Figs. at and are vertical sections in lines .fr x and y jzj, Fig. 2, respectively.

Like letters of reference refer to like parts in the several figures.

A represents the inc-losing casing of the blower, and d is the horizontal fan-shaft, which is mounted in bearings l), formed in horizontal bridge-pieces b, secured to opposite sides of the casing.

C represents the revolving blades or wings of the fan, which are formed on a hub c, secured to the fan-shaft a in awell-known manner.

D represents an annular series of air-injecting buckets or deiiectors, which are arranged on opposite sides of the fan-blades and which inject t-he air into the spaces between the fan-blades C, the buckets having a scooping action and compelling the air to enter the fan-casing as the buckets revolve. The airinjecting buckets D extend from the hub c outwardly to within a short distance from the outer ends of the fan-blades.

The fan-casing is provided in its sides with circular openings F, within which the air-injecting buckets are arranged and through which the latter project outwardly. These openings F are unobstructed except by the injecting-buckets, so that the air is afforded` free access to the interior of the fan-case. The

injecting-buckets are secured with their inner ends to the hub and with theirouter ends to rings d, which are arranged within the openings F near their periphery and secured to the sides of the fan-blades. Each injecting-bucket consists of a curved side plate e, an outer or peripheral end plate e', and an inner or'hub plate c2. The side plate e flares from the hub to the periphery of the fan, and its front edge is located farther outwardly from the side of the fan than its rear edge, so that the side plate inclines inwardly and deflects the air inwardly in a direction parallel with the axis of the fan. The peripheral end plate cf of each bucket is curved and triangular in form and arranged with its longest side adjacent to the front edge of the side plate, while the inner or hub plate e2 is of similar form, but smaller. These end plates prevent the escape of the deiiected air at the ends of the side plate and compel the air to enter the fan-case. The entire inner or rear edge of each bucket is open or free, so that the deiiected air can freely enter between the fanblades. The inner end plates e2 are secured to the hub c and the outer end plates e to the rings CZ, which are attached to the outer sides of the fan-blades near their outer ends. The blades or wings C are divided centrally at right angles to the shaft ce, and the parts of the wings are separated by a disk or partition f, formed on or secured to the hub c, and eX- tending from the latter to the periphery of the fan. This partition prevents the two aircurrents entering opposite sides of the casing in opposite directions from clashing or interfering with each other and weakening the force of the blast, but causes each injected current to supply the fan-blades on the adjacent side of the fan, undisturbed by the current entering the opposite side of the fan, so that the full effect of each set of injectingblades is .utilized g represents the tangential blast-spout of the fan-case, arranged in the usual manner.

I claim as my invention- 1. Inafan-blower, and in combination with the casing and with the fan-blades therein, of a series of buckets formed, as described, of inclined plates e, having free front and rear edges, peripheral end plates e', inner end plates e2, and ring d, the outer ends of the l end plate c2, these buckets being arranged ro buckets projecting through central openings and operating subsbantially as described. in the casingr and the inner ends being con- WVitness my hand this 18th day of June, nected t'o the hub, all substantiallyas and for 1888. the purposes described. ,Y 5 2. In a fan-blower of the class described, a JAMES S' SCHOONO' ER series of buckets, each of which is formed of Witnessesz i an inclined plate e, having free front and rear CARL F. GEYER,

edges, a peripheral end plate e', and an inner FRED. C. GEYER.

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