US831567A - Brake for windmills. - Google Patents

Description

' A.J.PAT0H.

BRAKE FOR WINDMILLS.

APPLICATION FILED JAN. 2, 1906.

PATENTED SEPT. 25, 1906.

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PATENTED SEPT. 25, 19,06.

A. J. PATCH. BRAKE FOR WINDMILLS. APPLIUATION .FILED JAN. 2. 1906.

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ALLEN MORSE ILLINOIS.

PATENT EETCE.

J. PATCH, OF BELOIT, WISCONSIN, ASSIGNOR TO FAIR-BANKS, & COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF BRAKE FOR WINDIVHLLS.

Application filed January 2. i906- Serial No.

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Be it known that I, ALLEN J. liirci-i, a citi- Zen of the United States of America, residing at Beloit, in the county lfisconsin, have invented certain new and useful Improvements in Brakes for lVindmills, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to new and useful improvements in windmills, and it consists in the novel construction and arrangement of parts, as will be more fully hereinafter described, and set forth in the claims.

The object of my invention is to provide a simple and eflicient means for operating a brake on the wheel when the vane is swung into parallelism therewith and at the same time to provide means for returning the vane to its normal position.

In the drawings, Figure l shows a plan view of my device, and Fig. 2 is a side elevation thereof.

A is a suitably-swiveled head or standard with a wheel B journaled thereon, preferably in an integral arm or casing B Bl is the wheel-shaft and carries a gear C, meshing with a gear C on stub-shaft C2. The stub-shaft is journaled on the head in casing D, preferably integral with the head.

E is a crank eccentrically connected to the gear C and pivoted on an arm E', projecting from the head. This crank is suitablyT connected to reciprocate the rod E2, and as these arts are not comprised in my invention I will not further describe them.

F is the vane, pivoted on bolt f on lugs or shoulders E F2 on the head near its base an supported by a brace G, pivoted on a bolt g on the shoulder G near the top of the head.

H is an arm or bar secured, preferably, by bolts h to the shoulder h on the head. The bar H projects on both sides of the head and carries a sheave H on one end. A chain or cable J, connected to the vane, passes around this sheave and over a sheave J', journaled on the head, from whence it extends to a suitable point within reach from the ground, so that the operator by pulling the cable can swing the vane into parallelism with the wheel, which is the ordinary means for stoping the wheel. K is a brake-druin preferably integral with the wheel-hub and adapt- Specicaton of Letters lPatent.

of Rock and State of prefer to employ are Patented Sept. 25, 1906.

l ed to be engaged by a brake-band K. The stationary end of this brake-band may be held by any suitable means, but the means I the invention of E. E. Benedict and is the subject of an application for patent now before the Office. This construction consists of a lug L, integral with the casing I) of the stub-shaft C2, to which lug is bolted the stationary end k band K. M is a lever pivoted at an intermediate point on the other end H2 of the bar H, and one end of this lever is pivotally connected to the free end lf2 of the brake-band. At a suitable point near the other end of the lever M it is pivotally connected to one end of a link N, the other end of which is pivoted on the vane F. This end of the lever M is further connected to the vane by a spiral spring O, and the lever lengths are so arranged that when the vane is swung into parallelism with the wheel the link N, acting on the lever M, will operate the brake. Also the point on the lever at which the spring is attached moves on a shorter radius than the oint on the vane at which the other end of the spring is attached, with the result that the spring is placed under tension and when the cable is released will tend to draw the vane into its normal position. A

It will be seen that the above-described system of levers is simple and eflicient, and when the vane is swung the wheel will be quickly stopped. The spring is preferably taut at all times and holds the vane in its normal position and prevents undue looseness and rattling at all times.

What I claim as my invention is 1. In a windmill the combination with a swiveled head, a wheel journaled thereon, a vane pivotally connected theretoand means for swinging said vane on its pivot, of a brake 'for said wheel, a lever pivotally attached to said head having one end connected to operate said brake and the other end connected to said vane, whereby the swinging of said vane will operate said brake and a second connection between said vane and lever for returning said vane to its first position.

of the brake- IOO 2. In a windmill the combination with a p brake mechanism for said mechanism for said wheel, a lever pivotally l connection under tension, for the purpose deattached to said head and having one end operatively connected to said brake mechanism, and a rigid and a yielding connection between said vane and said lever for operating said brake by the swinging of said vane, and for returning said vane to its rst position when said swinging means is released.

3. In a windmill, the combination with a swiveled head, a wheel journaled thereon, a vane pivotally connected thereto and means for swinging said vane on its pivot, of a wheel, a lever pivotally attached to said head and having one end operatively connected to said brake mechanism, a spring connecting the other end of said lever with said vane, and aI pivoted link connecting saidI lever with said vane, for the purpose described.

In a windmill, the combination with a swiveled head, a wheel journaled thereon, a vane pivotally connected thereto and means for swinging said vane on its pivot, of a brake mechanism for said wheel, a lever pivotally attached to said head and having one end operatively connected to said brake mechanism and a rigid and a yielding connection between the other end of said lever and said vane, whereby the swinging of said vane operates said brake and places said yielding scribed.

5. In a windmill, the combination with a swiveled head, a wheel journaled thereon, a

vane pivotally connected thereto, a bar rigidly mounted on and projecting on both sides of said headJ and means associated with said bar for swinging said vane on its pivot, of a brake mechanism for said wheel, a lever ulcrumed on a projecting end of said bar and having one end operatively connected to said brake mechanism, a link connecting said lever with said vane, whereby the swinging of said vane will operate said brake mechanism and a spring connecting said vane with said lever, for the purpose described.

6. In a windmill the combination with a head, a wheel journaled thereon, a vane pivotally connected thereto and means for swinging said vane, of a brake mechanism tor sai wheel, a brake-operating means and a rigid and yielding connection between said vane and said brake-operating means, for the purpose described.

In testimony whereof I ailix my signature in presence of two witnesses.

ALLEN J. PATCH. Witnesses F. G. HOBART, GEO. B. INGERsoLL.

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