US248978A - Fan-blower - Google Patents

Description

(ModeL) J. W. ANDERSON.

v FAN BLOWER. No. 248,978. Patented N0v.1,'1881.

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G O a a INVENTOR ATTORNEY,

NITED STATES PATENT OFFIQE.

JOHN W. ANDERSON, OF LANCASTER, PENNSYLVANIA.

FAN-BLO-WER.

SPECIFICATION forming part of Letters Patent No. 248,978, dated November 1, 1881.

Application filed April 20, 1880.

To all whom it may concern:

Be it known thatI, JOHN W. ANDERSON, of Lancaster, county of Lancaster, and State of Pennsylvania, have invented a new and useful Fan-Blower, of which the following is a specification.

My invention relates, principally, to thefanwheel in blowers operated by lever and tackle belts by hand, and usually employed for smithfires; and its novel features are, first, a fanwheel with weighted wings, the sectional equivalents of a fly-wheel made with crosssections corresponding with the radial crosssections of the casing couformably inclosing the said wheel; second, connectingthe wings of a ballasted fan-wheel with braces connecting its weighted wings.

I attain the objects of my inventionviz., a fan-wheel designed to sustainits momentum and to have uniform motion between the strokes of the lever of the operating mechanism-substantially as illustrated in the accompanying drawings, in which Figure 1 is a side elevation of my blowercasing, a part being broken away to show a wing of the inclosed fan-wheel. Fig. 2 is a cross-sectional view of my blower-casing and the fan-wheel. Fig. 3 is a perspective view of my fan-wheel.

Similai'letters refer to similarparts throughout the several views.

The fan-casing is made in two nearly similar sections, having the cylindrical passsge A at its periphery communicating with the outlet A, and having the central part, A swelled, said sections being joined together at ears a and supported on the pedestal K. Brackets F F on said sections support the ends of the fan-shaft S, which is regulated in place bythe adjustable parts It 2. The fan-wheel shown in Fig. 3 is the equivalent of a fly-wheel, it having its wings V weighted or heavy, they being sections of a cylindrical ring, transversely (Model) filling the peripheral part of the casing. My

said wheel has its blades R of corresponding size andform, to nearly fill the cross-section of the casing at A Said blades R are webbed or connected together by a central disk, W, about the hub H.

M represents a fixed pulley on my wheelshaft, it being designed to be run by tacklebelts directly by any suitable appliance for communicating rotary motion to the fanwheel.

I make the air-inlets S of my fan-casing abundantly large, that my fanwheel may act mainly at its wings, where they sweep the gradually-lessened cross-section of the swelled part A thereof. The extremities of the wings V are made to slant or deflect rearward, for the purpose of taking the air after it has been swept into the part A of the casing and delivering it by crowding or forced centrifugal action.

I construct my fanwheel with ballasted wings for two reasons: first, to avoid the necessity of having an additional fly-wheel-to secure uniform motion between strokes of a hand actuating-lever or other mechanism second, to secure a longer run of the wheel after the actuating appliance ceases to propel.

I claim as my invention- The fan-wheel consisting of the webbed central part, E It W, and weighted wings V, the sectional equivalents of a fly-wheel centrally arranged in a casing, A A whose cross-sections conform to said wings, and operating substantially as and for thepurposes set forth.

In testimony that I claim the foregoing as my invention 1 have hereunto set my hand and. seal this 10th day of May, 1881.

JOHN WV. ANDERSON.

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