US1118343A - Windmill. - Google Patents

Description

S. S. HARPER, DECD.

1:. L. HARPER, EXEUUTRIX.

- WINDMILL.

APPLICATION FILED JULY 15,1913.

2 SHEETS-SHEET 1.

Patented Nov. 24,

S. S. HARPER, DEG'D. 1:51.. HARPER, EXEOUTBIX.

WINDMILL.

nruou'mn rum) JULY 15, 1913.

1,1 18,343. Patented Nov. 24, 1914.

2 SHEETS-$112121 2.

THE NORRIS PETERS C0 PHOTO LITHL WASH/NU run. I) l:

UNITE %TATEE PATENT OFFICE.

SAMUEL S. HARPER, DECEASED, LATE OF NEW YORK, N. Y., BY ELEANOR L. HARPER,

EXECU'IRIX, or new rear, n. Y.,

ASSIGNOR TO AIR TURBINE COMPANYOF or new Jnnse r.

WINDMILL.

Application filed July 15, 1913.

To all whom it may concern Be it known that 1, ELEANOR L. Ilanrnn, a citizen of the United States, residing in the borough of lVlanhattan, city, county, and State of New York, executrix of the last will and testament of Senora. S. Ilinrnn, deceased, late of the borough of h'lanhattan, city, county, and State of New York, do hereby declare the following to be full, clear, and exact description of the invention of the said Samurai. 5. llanrnn of an Improvement in Windmills, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to windmills of the general type disclosed in the application for patent of Samuel S. Harper, tiled February 23, 1909, Serial No. 179,508. In this form of wind-mill, there is a vertical. suaft carrying a cage, in which is supported a plurality of vanes. Such vanes are mounted upon vertical pivots, and swing inward and outward by the pressure of the wind. A device is provided for guiding the vanes and limiting their movement.

The present invention relates to improvements of this device.

The objects of the invention are to simplify the structure, reduce wear and render the guiding and limiting device independent of the shaft. These and further objects will more fully appear from the following specification and accompanying drawings,

considered together or separately.

In the drawings,Figure 1. is an elevation of a Wind-mill embodying the invention. Fig. 2 is a sectional view of the same looking downward, the section being taken on the line 2-42 of Fig. 1. Fig. 3 is a plan View partly in section. of a modification of the ring for determining the position and extent of the movement of the vanes; and Fig. 4 is a detail view of a fin-their modification.

In all of the views, like parts are designated by the same reference cl'mracters.

Referring to Fig. 1, it will be seen that the wind-mill is su 'iported upon a shaft 1, which is vertical. A plurality of vanes 2-2 are connected by pivots 3 to upper and lower rims 1, 1. These rims are connected to Specification of Letters Patent.

Patented Nov. 2 1, 1914:.

Serial No. 779,079.

and supported from the shaft 1 by means of spokes 5, 5 engaging \vithhubs (S, (5. This form of mill is generally shown in the copending application, before referred to.

The device for controlling the position of the vanes consists of a ring 7. This ring, as shown, surrounds the shaft 1, and is connected to and is supported by the vanes 2, 2. On the ring 7, and adjacent to each vane is a supporting link 8, mountedto turn on the ring, and connected to the ring by bearings t). These links are preferably connected and proportioned, as shown, so that they will produce 1. rigid support for the rin For the purpose of stiffening the ring and preventing it from collapsing, and at the same time to allow it to be made as light as possible, it is provided with spokes 10, 10, which preferably cross it in the manner illustrated, so that a cent'al open space is provided through which the shaft 1 passes.

The ring is of such a size that it will come in contact with the pivoted edges of the vanes when the latter are swung out to the maximum extent, as shown in the upper left-hand portion of Fig. 2. \Vhen the ring is in this position, the vanes shown at the lower part of the figure will swing inward to the maximum extent.

For the purpose of imparting tension to the spokes 10, the device shown in Figs. 1 and 3 may be used. In accordance with this embodiment of the invention, the spokes 10 are connected to annular hubs 11., 11, these hubs surrounding the shaft 1. The internal opening in the hubs is sulliciently large so that their inner edges never come in contact with the shaft. The spokes 10, 10 are connected to the hubs, as shown in Fig. 1, and these hubs are separated by means of stay-bolts 12, 12. Three of these bolts are shown in Fig. 2. The ends of these bolts are threaded, as shown, the threads being of opposite pitch at the two ends, and the central part of the bolt is preferably squared for the application of a wrench. By rotating the bolts, the hubs are separated, and the requisite amount of tension is imparted to the spokes 10, 10.

Fig. 3 represents a modification in which the hubs 11, 11 are not used, the spokes extending directly from one side of the ring to the other. The ends of the spokes are shown as provided with nuts, by means of which the tension may be applied to them.

Fig. i represents still another modification, in which the spokes are arranged in the manner as shown in Fig. 3, and are provided with turn buckles, by means of which the necessary amount of tension may be imparted to them.

From the foregoing specification, it is apparent that by this invention there is produced a very simple and eificient device for governing the position of the vanes. The vanes will incline in the direction of the wind so as to produce the most effective con version of the wind pressure into rotating forces. At the same time, the structure is simple and does not easily get out of order,

. and the only wear that occurs is between the outer end of the ring 7 and the pivoted edges of the vanes 2 and the connections between the links 8 and their supporting bearings.

While there is shown in the drawings as an embodiment of the invention illustrated, a single ring "7 secured to approximately the center of the vanes 2, it must be understood that the invention is not limited to the precise number of rings that are used, or to the position thereof.

In accordance with the provisions of the patent statutes, I have described the principle of the invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is merely illustrative and that the invention may be carried out inother ways.

Having now described the invention of the said SAMUEL S. HARPER, what I claim as new and desire to secure by Letters Patent, is

1. A wind mill having a plurality of ver tical pivoted vanes, a cage for supporting the same and, aring connected to the vanes and supported thereby, said ring, by its engagement with the vanes, limiting and determining the extent of movement of the vanes.

12. A wind mill having a vertical shaft, a cage. thereon, vanes pivoted upon vertical axes within the cage, a ring, connections between the ring and the vanes, these connections being the sole support for the ring, said ring, by its engagement with the vanes, limiting and determining the extent ofmovement of the vanes, cross members connecting the ring at opposite sides and means for imparting tension to such cross members.

8. A wind mill having a central supporting shaft, rims secured to the shaft and supported thereby, a plurality of vertical vanes pivoted to the rims, the pivot being adjacent to one edge of a vane, a ring surrounding the shaft, supports for the ring carried by the vanes, said ring, by its engagement with the vanes, limitingand determining the extent of movement'of the vanes, spokes extending across from side to side of the ring, and leaving a central opening for the movement of the ring around the shaft, and devices fer exerting stress upon the spokes.

This specification signed and witnessed this 30th day of April, 1913.

ELEANOR L. HARPER, Executria; 0 the last will and testament of Samuel S. Harper, deceased. Witnesses GEORGE JARVIS THOMPSON, NATHAN H; LORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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