US260927A - Windmilj - Google Patents

Description

(No Model.) J. W. BARBER.

WINDMILL. l

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fz' mass es I UNITED STATES PATENT OFFICE.

JOSHUA VV. BARBER, OF LENOX STATION, ILLINOIS.

WINDMILL.

SPECIFICATION forming part of etters Patent No. 260,927, dated July 11, 1882.

Application filcd May 24, 1882. (No model.)

To all whom it may concern Be it known that I, J osHUA W. BARBER, a citizen of the United States, residing at Lenox Station, in the county of Warren and State of Illinois, have invented certain new and useful Improvements in Windmills, of which the tollowin g is a specification, reference bein g had therein to the accompanying drawings.

My invention relates to windmills; and it consists in the construction and arrangement of its several parts,as will be hereinafter fully set forth, and pointed out in the claim.

In the drawings,1 `igure 1 is a side elevation, and Fig. 2 is a top plan view, of my windmill.

A are the supports. They are joined at their top by the plate a, through which is a hole of sufficient size to permit the passage of the stock B, the lower end of which is supported by the braces a', as shown.

B is the mill-stock. It is set vertically in the snpporters A, and over its upper end is placed a revolving collar, b, as shown. side of this collar are secured the paralleled horizontal frame-barsC C. They are enlarg'ed at the point where they are secured to the collar b, so as to have sufficient space between them for the revolutions of the crank. Between the rear portions of the bars is seeured the tail c, and between their forward portions is secured wind and fan brake mechanism.

J onrnaled horizontally through the bars O G, immediately over the collar b, is the fan-shaft D. It is provided with a crank, d, which revolves between the bars O C over the opening in the stock B, as shown. Secured to the outer ends of the shaft are fan-rods E. To their ends are secured the V-shaped fans F, which are so arranged that as they revolve to the top ot' the mill their concavities will be toward the brake. A eircular band, e,extends around the rods next to the bars O and acts as a bearing, against which the brake foot-piece g' presses.

The wind and fan brake mechanistn is arranged on the forward portion of the framebars O O, and consists of a lever, G, adapted to be pressed against the band e of a spring, g, adapted to release the tension from the lever, and of a wind-brake, H. The lever G is journaled in the frame-bars O G between the wind-brake and shaft D. Its free end extends To the upperup over the wind-bra-ke and is embraeed thereby. Its inner end is providedwith a foot-piece, g', which presses against the band e, as shown.

The wind-brake H is journaled vertically in the outerends of the frame-bars C,and its upper end is slotted to receive the lever G, which is retained therein by the small roller h, as shown; The portion of the brake-rod below the frame-bars is provided with slats h', set so as to slant outwardly, as shown. The object ot' this arrangement is to prevent the wind which comes in contact with the brake from exerting too'strong a pressure upon it and allow the wind to pass through the brakes and he deflected upwardly against the under sides of the fans, thereby increasing the power of the mill. The spring g is placed between the top of the bars C and the under side of thelever G, and it operates to relieve the pressure of the foot-piece g' from the band c when no brake is needed.

ln the operation of the mill thewind strikes the eoncaved side of the fans and revolves them in the direction ot' the arrow, Fig. 1. As they revolve around the wind is prevented from exerting a backward pressure upon them by the brake H. Additional power is given the mill` by the pressure ot' the wind, which passes upwardly through'the slats against the under side of the fans as they move past. In the operation of the brake mechanism the wind, pressin g, when too strong, against thebrake H, causes it to turn upon its pivot toward the fans. This movement is communieated to the lever G, depresses the outer end of it, thereby causing the foot-piece g' on its inner end to press up against the band e, the friction between the parts Operating to reduce the number ot' revolutions of the fans or speed of the mill. When the wind is light the upward pressure of the spring g against the lever G will release the tension of the brake H upon the lever and cause its foot-piece to draw away from the band c.

VVhat I claim is- In a Windmill, the brake niechanisin consisting of the lever G, journaled in the frame-bars O, and provided with a footpiece, g', on its inner end, adapted to press against the bands c of the rods E, whereby the revolutions of the too fans F and shaftI D are decreased, of the Vertiarran ged and combined substantially as shown cal brake H, journaled between the ont'er ends and described. i Io of the frame U, and provided with slots h' upon In testimony whereof I afifix my signature i its lower portion, and having its upper end in presence of two witnesses. 5 slotted and adapted to receive the lever G, JOSHUA VV. BARBER.

z'. which is retained therein by the anti'friction Witnesses: 1 pnlley h, and of the spring g, arranged be- JOHN B. SHELTON, tween the level' G and the frame-bars G, all E. A. BALDWIN.

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