US466482A

US466482A - Windmill-governor

Info

Publication number: US466482A
Authority: US
Publication date: 1892-01-05
Anticipated expiration: 1909-01-05

Description

G. M. ALLEN. WINDMILL, GOVERNOR- No. 466,482. Patented Jan. 5, 1892.

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G. M. ALLEN.

WINDMILL GOVERNOR.

Patented Jan. 5, 1892.

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Ill lu l UNITED STATES PATENT ()FFICE.

GEORGE M. ALLEN, OF BELOIT, l/VISCONSIN.

WlNDMlLL-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 466,482, dated January 5, 1892. Application filed August 31, 1891; Serial No. 404,226. (No model.)

T0 at whom it may concern:

Be it known that I, GEORGE M. ALLEN, a citizen'of the United States of America, residing at Beloit, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Windmill-Governors, of which the following is a specification.

Referring to the accompanying drawings, wherein like reference-letters indicate like parts, Figure 1 is a side elevation; Fig. 2, a horizontal plan section in line 2 2 of Fig. 1,

showing jaws closed in full lines and open in dotted lines; and Fig. 3, a detail cross-section in line 3 3 of Fig. 2.

This invention is especially designed for that class of windmills in which, through the action ofa pivoted tail-vane and a weight or spring of varying resistance, the Wind-wheel, when the wind becomes too strong,is automatically swung bodily out of the wind to a greater or less extent, dependent upon the force of the gale, and is afterward returned to its normal position by the action of the weight or spring.

The object of the invention is to provide a governing-brake which, when the wind-wheel is swung wholly out of the wind, or, in other words, edge to the wind, will thereby automatically be caused-to clamp a collar or disk attached to the wheel or its shaft, and thus prevent the wheel from rotating when in that position, but upon the restoration of the windwheel to its working position will release the wheel and allow it to resume its work.

To this end the invention consists, essentially, in combining with said collar or disk and with the mill-head andtail-vane a brake adapted when applied to clamp the collar or disk between two opposed surfaces and so constructed as to be automatically applied by the swinging of the wheel out of the wind and automatically released bythe swinging of the wheel back into the wind.

The form and construction of the parts may be largely varied without departing from this principle. In the form of embodiment here illustrated A is the mill-head; T, the tailvane, pivoted to the mill-head at t, and provided with a projection t; b, the wind-wheel shaft; 0, the disk or collar rigidly secured to said shaft and revolving therewith, and M a the two clamping members, both of which may be movable or the one movable and the other fixed, it being immaterial which, so long as they are adapted to clamp the edge of the disk between them when the wheel is edge to the wind. The drawings illustrate the form last mentioned.

In the illustrated form n is a rigid arm or bar affixed to the mill-head byaslot and bolt, (shown at 71 so as to be adjustable in position, and bent so that its outer extremity lies close to and parallel with the front side of the-collar or disk 0 at or near the outer edge of the latter. This adjustable arm forms the fixed jaw of the clamping device. The movable jaw of said device acts against the opposite side of said disk and is shown at M. In the form here shown it consists of a bent lever N,'pivoted at n to the rigid bar 'n, and having its inner end connected by an articulated rod n to the projection 25 of the tail-vane, the parts being so arranged that when the rod 01 draws to a sufficient extent upon the lever N the front end 72 of said lever will be thereby caused to bear against the disk 0 and will clamp said disk between the jaws n n and stop the disk and the wind-wheel from further rotation while the disk is so clamped. It is not intended that the disk shall beclamped by a slight deflection of the windwheel out of the wind, but only when it has been fully deflected or nearly so. Hence the jaw 12 is preferably allowed to move a short distance without coming in contact with the disk, as shown in Fig. 1, by the space between a and 0. As the wheel becomes considerably defiected the jaw 97. should bear against the disk without clamping it, thus forming for the time a friction-brake to retard the action of the wheel. As the wheel becomes fully deflected, however, the disk or collar, yielding slightly to the pressure of the jaw 01", comes against the opposing rigid jaw n and is firmly clamped between said two jaws, so that the wind-wheel ceases to rotate. When the wind abates, the spring M or its equivalent turns the wheel back into the wind, and the jaws are thereby caused to open and release the disk or collar, allowing the windwheel to resume its work. By eonnectin g the rod n to the projection by a screw connection, as shown at at, or by adjusting the bar n by means of the slot and bolt 71 the parts may be adjusted so that the movable jaw will act in the manner above described or so as to produce the clamping effect more promptly, if preferred. The rigid jaw 01 may be secured to the mill-head in any way that will lock them firmly together-for example, by rivets or bolts; but the adjustable connection or is preferred. When the wind-wheel is thrown out of the wind by hand by means of the usual cord provided for that purpose, the device herein described automatically clamps the disk or collar and prevents the wheel from useless rotation.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is---- -1. In a windmill, the combination of the wind-wheel, the mill-head, the tail-vane pivoted to the mill-head, the disk or collar revolving with the wind-wheel, a clamping device supported by the mill-head and consisting of two opposing jaws adapted to clamp the disk between them, and a connection from the clamping device to the tail-vane, adapted through the action of the tail-vane to operate the clamping device to clamp the disk when the wind-wheel is deflected substantially out of the wind, substantially as described.

2,-In a windmill, the combination of the wind-wheel, the mill-head, the tail-vane pivoted to the inill-head, the disk 0, the jaws 11/ a the lever N, and the adjustable rod 11?, substantially as described.

3. In a windmill, the combination of the wiml-wheeL-the mill-head, the tail-vane pivoted to the mill-head, the disk 0, the movable jaw n, and the adjustable jaw 01', substantially as described.

GEORGE M. ALLEN.

\Vitnesses:

A. R. MOLENEGAN, R0131. Tom).