US1221090A

US1221090A - Windmill.

Info

Publication number: US1221090A
Application number: US8350716A
Authority: US
Inventors: John C Prewitt; Clark Hendricks
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-03-11
Filing date: 1916-03-11
Publication date: 1917-04-03
Anticipated expiration: 1934-04-03

Description

J. c. PREWITT & c. Hlmml'cKsl WINDMILL APPLICATION FILEP MAR. Il. 1916- 1922191090, Patented Apr. 3, 1917.

j 2 SHEETS-SHEET l.

and Clar/n /vend'ric/(s J C. PREWITT L C. HENDRICKS."

WINDMILL. APPLwATloNTILED MAR. Il, |916.

` Patented Apr. 3,1917.

.2 SHEETS-SHEET l/I/f' if m INVENTORS @raras rarrnnrr onirica WINDIVIILL.

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed March 11, 1916. Serial No. 83,507.

To all lwhom it may concern: Be it known that we, JOHN C. Pnnwrrr and CLARK HnNDnroKs, citizens of the United States, residing at Santa Margarita, in the county of San Luis @bispo and State of California, have invented new and useful Improvements in Windmills, of which the following is a specification.

This invention relates to a wind mill. One of the objects of the present invention is to provide a simple, rigid, easily operated wind mill, which consists of a horizontally positioned oscillating beam, carrying a sail frame at one end and an adjustable counter-weight at the other end.

Another object of the invention is to provide means for holding the beam and sail frame in trailing position in the wind, and

furthermore, to provide means for automatically rocking the sail frame at the .end of each stroke to change the angle of the sails and the direction of the movement of the beam.

Another object is to either transmit the power created by the oscillating movement of the beam in such a manner that itl may be used for pumping water or operating other machinery used on the farm or in other places. Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts, as hereinafter more fully describedv and claimed, having reference to the accompanying drawings, in which- Figure 1 is a side elevation of the wind mill. j

Fig. 2 is an enlarged cross section on line 2 2, Fig. 1.

Fig. 3 is an enlarged detail view in side elevation of one tilted position of the track members.

Referring to the drawings in detail, A indicates'a suitably shaped support on the upper end of which is turnably mounted a head 2, provided with a pair of rearwardly extending fork-shaped bracket arms 3. Pivotally mounted between the arms 3 is an arm or beam 4, on one end of which is mounted an adjustable counter-weight 5.

Fivotally mounted on the opposite end of the beam 4, as at 6 is a sail frame 7 in which is rigidly secured a plurality of sails or planes 8. The planes are lowered atright angles to the frame 7 and can 'only assume an angular position with relation to the wind which is supposed to be blowing in the direction of arrows a, by tilting the frame about its pivot 6. This is accomplished automatically at the end of each stroke and will be later described.

Secured to the beam 4 just above the fulcrum point of same is a track member 9 and pivotally mounted between the arms 3, as at 10 is a track member 11, which is connected with the upper track 9 by means of a pair of cross links 12. Movement of the beam 4 to assume the dotted line position shown at 14 or 15 causes the track member 11 to assume an opposite angle, this movement being transmitted from the upper track by means of the cross links 12. The tracks will thus always assume opposite angular positions during the movement of the main beam 4, except when this stands in the horizontal position shown. These angular positions of the tracks are of great importance as they provide means for tilting the sail frame at each end 0f the Oscillating movement of the beam 4. y y

Carried by the track 9 is a` weighted roller 16, the movements of which are limited by means of stops 17 formed at each end of the track, and similarlymounted on they track v11 is a` weighted roller 18, the

movementsy of which are limited by stops 19. Pivotally connecting the upper roller 16 with the, sail frame is a link 20 and similarly connecting the lower roller of the sail frame is a link 21. The operation of thedevice will be as follows:

The counter-weight 5 is normally adjusted to permit the beam 4 to assume the dotted line position, indicated at 15, when 'the velocity of the wind is not sufficient to operate the mill. ythe same time assume the dotted line posi- The sail frame will at tion indicated at 7a. The positions of the planes or sails 8 are such that the wind will strike the ,planes on their lower surfaces, in-

dicated at 25. The wind'pressure thus eX- 'erted will raise the sail frame with connected beam 4 about its fulcrum point until the beam reaches the dotted line position, shown at 14. The position of the sail frame is. here automatically changed from the dotted line positionshown at 'l'b to that indicated at 7 and this is accomplished as follows:

4l-rlhe track member 9 assumes the same 110 l sail frame to that indicated at 7a.

tilted position as the beam 4, while the connected cross links 12 will cause the track member 11 to assume the tilted position opposite to that assumed by the track 12. The weighted roller 16 will thus have a tendency to run down the track until it engages with the stop at the lower end,` while the roller 18 will run down the track 11 in the opposite direction until it reaches the opposite end of the stop 19. This movement of the rollers in the opposite'direction is transmitted throughthe

links

20 and 21 to rock the sail frame about its pivot 6, and this is only accomplished when the beam assumes the angular positions shown at 14 and 15, as the inclined positions of the track members 9 and 11 are not suiiicient to permit the rollers to overcome the weight of the sail :frame until such positions are assumed by the beam 4. The movement of the sail frame when the beam assumes the dotted'line position indicated at 14 from the position 7 b to that assumed at 7 immediately presents the upper surfaces 26 of the sails to the wind. All pressure is thus exerted at the downward direction, causing the beam to move from theposition 14 to that shown at 15.

The angular position of the track members will again be gradually changed during the movement of the beam and they will become suiiicientlyinclined when the position 15' is reached to permit the rollers to run down and again change the position of the Means have also been provided for the purpose of limiting the oscillating movement of the main beam,rand also for the purpose of limiting theangular movement of the sail frame. This is accomplished by providing an arm 30 which is pivotally mounted, as at 3l upon a pair of standards 32 carried by thel head 3. One end of the arm 30 is proi vided with a wind vane 33 and the opposite end is provided with a V-shaped head 34, the lower endsof which are adapted to engage projecting pins 35V formed on the upper roller 16. f The moment the Ywind reaches aV predetermined velocity it can easily be seen that the pressure exerted againstv theV vane 33 will be suflicient to `move the arm from the position shown in Fig. 2 to a point where the lowerA ends of the head 34 will move into the path of travel of the roller 16, as shown in Fig. 1. IThe projecting pins 35 will thus be engaged vby the: head 34 and the movement of the roller limited. The angular position of the sail frame is thus limited and as this controls the movement of the main beam, it can be seen that the oscillating movement will gradually decrease as the wind pressure eX- ceedsthe danger point.

A mill constructed as here shown may be used for a` great variety of purposes, but is particularly intended for operating plunger pumps. This i's accomplished by connecting the sucker rod 40 of the pump with the beam 4 by means of connecting links 41. The oscillating movement of the beam is thus transmitted to raise and lower the sucker rod 40 and is thus ideal for pumping purposes around farms and arid regions. Tt is obvious, however, that the oscillating movelnent created may be converted into rotary or any movement desired and can thus be employed for a great variety of purposes.

The materials and inish of the several parts ofthe device may otherwise be such as the judgment and experience of the manufacturer may dictate.

We wish it understood that various changes in form, proportions and minor details of construction may be resorted to Within the scope of the appended claims, and that we do not wish to limit ourselves to the specific design and construction here shown.

Having thus described our invention, what we claim and desire to secure by Letters Patent is- 1. The combination with the walking beam and the pivotally supported sail frame mounted thereon, of means for automatically tilting the sail frame the moment the walk ing beam assumes a predetermined angle, said means including rods having one end of each connected with the sail frame at points above and below the pivot, tiltable tracks upon which the opposite ends of the rods are movable, diagonal links connecting the tracks to tilt them simultaneously, and a device Jfor limiting the tilting movement.

2. The combination with a support, of a rotary head on the support, an arm pivotally mounted in said head, a sail frame pivotally mounted on one end of the arm, a counterweight on the opposite end of the arm, a plurality of sails rigidly secured in the sail frame, a track member secured to the arm, a second track member pivotally mounted below the arm, crossed links connecting the track members, a weighted roller mounted on each track member, and a link connecting each roller with the sail frame to automatically tilt the frame when predetermined positions of the arm are reached.

3. The combination with a support, of a rotary head on the support, an arm pivotally mounted in said head, a sail frame pivotally mounted' on one end of the arm, a counterweight on the opposite end of the arm, a plurality of sails rigidly secured in the sail frame, a track member secured to the arm, a second track member pivotally mounted below the arm, crossed links connecting the track members, a weighted roller mounted on each track member, a link connecting each roller with the sail frame to automatically tilt the frame when predetermined positions of the arm are reached, and means for limiting the tilting movement of the sail frame.

4. The combination with a support, of a rotary head on the support, an arm pivotally mounted in said head, a sail frame pivotally mounted on one end of the arm, a counterweight on the opposite end of the arm, a plurality of sails rigidly secured in the sail frame, a track member secured to the arm, a second track member pivotally mounted below the arm, crossed links connecting the track members, a weighted roller mounted on each track member, a link connecting each roller with the sail frame to Copies of this patent may be obtained for automatically tilt the frame when predetermined positions of the arm are reached, a governor arm pivotally mounted above the main arm, a wind vane on one end of the governor arm, and a V-shapedprojection on the other end of the arm engagealole with one of the rollers to limit their movement.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

' JOHN C. PREWITI.

CLARK HENDRICKS. Witnesses:

GEORGE H. BYER, FRED A. BRIZJOLANA.

five cents each, by addressing the "Commissioner of Patents,

Washington, D. C.