US499395A

US499395A - Windmill

Info

Publication number: US499395A
Authority: US
Publication date: 1893-06-13
Anticipated expiration: 1910-06-13

Description

(Nu Model.) 2 Sheets-Sheet 1. T. O. PERRY. WINDMILL.

Patented June 13, 1893.

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N0 Model.) 2 Sheets-Sheet 2.

T. 9. PERRY.

WINDM-ILL.-

No. 499,395. Patented June 13,1893.-

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' NITED STATES PATENT O FICE.

TI-IOMAS O. PERRY, OF CHICAGO, ILLINOIS.

-WINDM|LL.

SPEGIFIOA TION fQrming part of Letters Patent No. 499,395, dated June 13, 1893.

Application filed December 19, 1892. Serial No. 455,720. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS O. PERRY, a citizen ofthe United States, residing at Ohicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Windmills, which are fully set forth'in the following specification, reference beinghad to theaccompanyingdrawings, forming a part thereof.

This invention relates to that class of windmills in which a governing wheel is employed to operate the main wheel to cause the wind, by operating upon the governor wheel,to turn the main wheel either into or out of wind, according to the position. in which the governor is set with respect to the main wheel.

It consists in improved means for transmitting motion from the governor wheel shaft to a turn-table, and in improved means for setting the governor wheel relatively to'the main wheel, and in the combination with these means, of means for automatically regulating the mill, and in means whereby the governor wheel is made to counteract the side pressure of the wind upon the main wheel and to counteract also the tendency of the resistance of the work performed, operating through the main vertical shaft from which the mill communicates power downward to cause the action of the main wheel to carry it out of wind.

In the drawings,-F-igure 1 is a sectional plan, showingthe general arrangement of my improved mill and its supports and governor wheel, section being made at ,the line 11 on Fig. 2. Fig. 2 is an elevation looking in the direction of the arrow 2 on Fig. 1. Fig. 3 is a detail vertical section at the line 33 on Fig. 1, on an enlarged scale. Fig. 4 is a detail vertical section at the line 44 on Fig. 1, on an enlarged scale. Fig. 5 is a horizontal section through the governing wheel at the line 55 on Fig. 3, showing the parts in full lines in the position of the full lines on Fig. 1, and in dotted line in position corresponding to the dotted lines on Fig. 1.. Fig. 6 is a detail elevation showing the variable fastening of the furling rod or cord at the bottom.

I have shown this invention as applied to a mill having a turn-table of special form, and adapted to have the main wheel mounted entirely above the platform of the turn-table,

. but the features of construction of this turntable, and of the location of the main wheel with respect'thereto, I do not claim, as these matters are fully'covered by my application, Serial'No. 454,162, filed December 5, 1892.

A is the main wheel supported in bearings at the upper ends of the standard AA', which are extended upward from the turn-table B. The turn-table comprises a central hub B,

and sundry arms and bars secured to andv braced from the hub and constituting a rectangular frame or platform which is fully described in my application, Serial No. 454,162, above mentioned. I shall refer to the specific parts of this platform or turn-table only in so far as necessary to describe the features pertaining to this invention. I

O is the tower top, capping and binding together the corner posts 0 O, &c., of the tower.

' B is a coupling by which the turn-table is connected to and vertically pivoted on the tower top, as more 'fully described in my said application, Serial No. 454,162.

Upon the top of the tower, resting above the tower top. or cap 0, concentric with the tu rn-table, is the beveled gear D facing downward. This gear may be treated as rigid with the tower for all purposes, except as hereinafter specified. That is to say, the turn-table, whose hub rests upon it and transmits to it the entire weight of the turn-table and main wheel and its supports and governor wheel and connected mechanism, binds the broad surface of the web of the beveled gear against the similarly broad horizontal top surface of the tower-top O, and the extent of this surface in contact is such that for all the rigid with the tower-top, and, as will be understood from the further description, however lightly or slightly it might be thus bound to'the tower top, there is no force orinfluence tending to rotate it on the latter, arising out of or pertaining to the regulating or governing devices, and it is not rigidly bolted to the tower top simply because, in case of a whirlwind, or wind having a like effect to whirl the mill and all parts connected thereto bodily about the support, it is safer to provide a point at which such exceptional motion could occur, rather than to compel the tower and edgewise to the wind.

turn-table and mill supports thereon to take the wrenching strain of such exceptional action, and, if they are able to. resist the strain, to compel the wheel to endure the same to its damage. In the further description of this mechanism, therefore, the gear wheel D will be considered and treated as a fixed part of the tower top.

The steering arm comprises a bracket E, rigid with the turn-table, having a socket E extending toward one corner of the turn-table platform. Into this socket, a pipe E is secured and constitutes a rigid extension of the bracket and principal portion of the length of the steering arm, said pipe extending out underneath the side-bar B of the turn-table platform at the corner thereof, and secured to the platform at that corner by the clip 6 The steering arm of the bracket E extends some distance beyond the turn-table platform, and comprises the yoke F secured to the pipe E at the end of the latter. The yoke F has the socket F adapted for that purpose.

The bracket E and the yoke F are provided respectively with bearin gs, at the bottom or inner ends of the sockets respectively, in which the pipe E is secured, for the shaft g, at the inner end of which there is made fast the beveled opinion G, which meshes with the horizontal beveled gear D. At the other end of the shaft, within the yoke F, there is made fast to the shaft the beveled gear G.

H is a vertical crank shaft journaled in the arms of the yoke F, beyond the face of the beveled gear G, having rigid with it a yoke J, and having journaled on it, above the upper arm of the yoke J Where the latter is fastened to the crank shaft, a double gear-wheel KK, of which K is a beveled pinion at the center, which meshes with the beveled gear G, and K is a beveled gear rim which overhangs the yoke J at the upper end of the latter. From the upper end, and below the face of the beveled gear rim K, a rigid stud axle J 20 projects horizontally outward, and constitutes the axle or bearing shaft of the governor wheel L, whose hub is shown in section in Fig. 3, said hub having a beveled pinion formed rigid and integral with it at its inner end, said pinion meshing with the beveled gear rim K of the wheel K K. It may now be understood that the rotation of the governor wheel by the wind,transmitting rotary motion to the train of gears described journaled on the steering arm, and by the engagement of the pinion G with the gear D on the tower top, will rotate the steering arm and thereby the entire turn-table about the said gear D, and so long as the same does not Slip on the tower top, will rotate the turn-table about the latter until such rotation brings the steering wheel itself out of the wind,that is,

WVhether such rotation tends to bring the main wheel into the wind or out of the wind or to anintermediate position with respect to the direction of the wind, depends upon the angle at which the governor wheel is set with respect to the main wheel.

I design that the governor wheel shall nor mally be held parallel to the main wheel, that position being one in which the governor wheel will tend to bring and hold the main wheel out of the wind. In order to normally hold the parts in this relation, I provide a spring N, having one end lodged in a slot 71. in the lower end of the shaft II, which protrudes through its lower bearing in the yoke F, said spring being then coiled about the shaft, and having its other end stopped upon the side of the yoke, and tending, by its reaction, to rock the shaft and thereby the yoke J, and the governor wheel mounted thereon, toward the position at which the governor wheel is parallel with the main wheel. For the purpose of stopping the yoke J at this .position, I provide the lower end of the lower arm of the yoke F with a horizontally projecting cross-head F and at the lower end of the yoke .I, I provide a short cross-head J adapted to collide with the face of the crosshead F at one end of the latter when the governor wheel is in the position parallel with the main wheel, and the spring N is coiled in a direction tending by its reaction to rock the shaft H until the yoke is stopped, as stated. When the yokeJ is rocked in the opposite direction, it will be similarly stopped at the opposite end of the cross-head F and the parts are proportioned so that the range of rocking movement permitted between the two stoppages is ninety degrees, so that the governor wheelmay be shifted from a position parallel to a position at right angles to the main wheel.

I will now describe the means for adjusting the yoke J, as desired, within the said range of ninety degrees, and thereby adjusting the governor wheel, when desired, to cause it to bring the main wheel more or less into the wind or out of it. On the wrist h of the crank H" of the crank shaft H, I connect the regulating spring M to the other end of which is connected one end of the cable or chain M which extends down over the guide pulley B journaled on a lug b at the upper side of the hub of the turn-table, and from said guide pulley, said chain extends down through the aperture b in the top web of the turntable within the coupling B and extends down below the end of the sleeve B and at any convenient point below that sleeve is fastened to the web of a ring M which is guided vertically on a fiat bar M which is bolted fast at its upper end to the turn-table hub at m and extends down within the sleeve 13 for that purpose. The ring M is engaged with a concentric ring M in such manner that it may turn freely within the latter, which, in turn, is made fast to a flat bar or rod M which is guided in any convenient manner on the tower, so that it may slide vertically, and thereby slide the ring M vertically on the shaft W, which may rotate freely within both rings. The rod or bar M extends to any point conveniently near the bottom of the tower, and any suitable means is provided for securing it lower at any point to which it may thus be pulled. A simple and effective device for this purpose consists in attaching to its lower end a common chain M any link of which may be engaged with a pin on on the tower. The spring M is designed to be stronger than the spring, N, so that, upon being strained, it will, while stretching, overcome the tension of the spring N, and rock the shaft H and yoke J away from the position at which the governor wheel is parallel with the main wheel, toward, and if desired, ultimately to, the position at which it is at right angles to the main wheel. By the use of this spring M in the line of connections by which the shaft H is'rQcked against. the tension of the spring N, the mill is automatically regulated to such speed or against such force of wind as desired, for, after rocking the shaft H in the manner described until the governor wheel is at right angles to the main wheel, the spring M may be still further stretched, increasing the force with which itholds the governor wheel to the position stated, to any desired degree. As will more clearly appear after fuller description of its operation, the perfection of the regulation effected by this device depends upon the promptness with which the spring responds to the stress of the wheel upon it, and to have this result as perfect as possible, it is preferably made to react directly between the steering wheel frame and the turn-table, bylocating it on the latter, instead of elsewhere in the line of the furling connections. The advantage of this feature is not limited to its combination with a steering or governing device which consists of a windwheel, but is equally applicable to the more common expedients for steering by a simple vane at the end of the steering arm, and I have shown it so applied in my pending application, Serial No. l32,131, filed May 7,1892. The guide pulley B, it will be understood constitutes the point on the turn -table at which the reaction of the spring is experienced, and this point, therefore, remains unchanged, however the tension of the spring may be changed by pulling or slacking the furling rod. The location of the governor wheel upon the steering arm which extends horizontally in the manner shown from a point entirely below the wheel,prevents it from being in any position shielded by the main wheel or shielding the main wheel from the wind, and being located thus close to thelevel of the top of the tower, its steering action is.

accompanied by the minimum of tendency to twist the turn-table or wheel supports. But

the chief-advantage of its location, and that which controls in the selection of the position of the steering arm with respect to the main wheel, is that it thereby affords a surface exposed to the wind on the outside of the vertical axis of the turn-table from the main wheel when set so as to hold the main wheel out of wind. The construction of the turntable, whereby it is adapted to support a wheel located above the top of the tower, permits the location of the wheel very near to the vertical axis, but it is impossible without objectionable additions to the mechanism to locate a single wheel directly in line with the vertical axis, and therefore, when the wheel stands arm, being several times greater than the distance of the main wheel aside from the turntable axis, makes the smaller surface of the steering wheel measurably effective to counterbalance the larger surface of the main wheel. For this purpose, alone, the steering arm might extend in any direction toward the opposite side from the main wheel, and its location at the particular corner at which I have shown it is determined by another somewhat similar consideration. The main Wheel is showninthe drawings as a right-hand wheel, that is, revolving in the direction of the hands of a clock when seen from the front. Considering the mill held nowin position facing the wind by the steering wheel being set at right angles to the main wheel, as shown in Fig. 1, it will be seen thatthe resistance of the work performed by the Vertical shaft, which transmits power downward from the main wheel to the work, tends to cause the main wheel revolving in the direction stated,to travel and carry the turn-table aboutavertical axis in the direction which is indicated by the arrow X on Fig. 1. action of the steering wheel, which, by such change of angle, wouldbe brought into the wind, and would immediately begin to revolve and feed the wheel back toward its proper position. But the elastic reaction of the vertical shaft from the torsion which is due to corner of the platform,instead of extending,

it in any other direction away from the plane of the main wheel, the pressure of the Wind upon the surface exposed by the governing wheel, when the latter is at rest and the main wheel in action, counteracts this tendency due to the resistance of the work, and con-.

sequent torsion of the main vertical shaft.

For this purpose alone, the steering armv might extend to any point at the left of a vertical plane through 'the'axis of the-turn-table at right angles to the plane of the wheel; and

Such motion would be resisted by the for the purpose before stated it might extend to any point in the rear of a plane through the vertical axis parallel to the plane of the wheel. The position for maximum effectiveness for both purposes, therefore, or what might be called the compromise position, is that in which it is shown,to-wit, extending at an angle of forty-five degrees between a vertical plane at right angles to the main wheel and a vertical plane parallel to the main wheel. It will be obvious that a reversal of the direction of rotation of the wheels might make the reverse position of the steering arm necessary.

Inasmuch as the size of the governing wheel is so related to that of the main wheel as to give to the former the power to control the position of the latter, in view of the train of gearing by which the governing wheel is connected to the tower; and since it may not always he practicable to properly relate the two wheels, and at the same time make the edgewise exposed surface of the governing wheel just suificient to counterbalance the tendency of the main wheel to swing aside from the causes stated, when at rest and at at work, respectively, or since, at least, it may involve intricate'and diflicult calculations and experiments to make the wheels of such relative sizes as to meet both requirements, I prefer to supplement the governing wheel for the purpose of enabling it to counterbalance the tendency of the main wheel to swing sideward, by a vane Y, which is carried by an arm of the governing wheel frame,either the stem H or the axle, extended and properly bent answers the purpose,said vane being fixed at an angle to the plane of the steering wheel, and having a surface which, added to the edgewise exposed surface of the governing wheel, will properly counterbalance the main wheel in the manner specified. It will be observed that it is the edgewise exposed surface of the steering wheel which is to be considered in calculating for counterbalancin g the sideward swinging tendency of the main wheel, and since the surface of the vane Y is exposed to the wind whenever the edge of the steering wheel is thus exposed, that vane will supplement the governing wheel both for the purpose of counterbalancing the main wheel when at rest and the torsion of the vertical shaft or resistance of the work when the main wheel is in operation. I have found that when a very sudden and violent gust of wind strikes the steering wheel edge, while the main wheel is in action, as in Fig. 1, the governing wheel is liable to swing instantly around to the utmost limit permitted by the stops on the frame, and expose its rear broadly to the wind. The

action of the wind blowing through it from the rear is to rotate it backward, and cause it to feed the main wheel,and itself also, around the tower in the direction of the arrow X, and it will sometimes do this so rapidly that the main wheel will be brought entirely out of the wind, and will come to rest,-

or even be carried around so far that it will present its back to the wind,-before the governing wheel, Whose inertia tends to cause it to maintain its rotation, will come under control or recover itself, and reverse and restore the main wheel to operative position. This result, caused by failure to properly adapt the spring M to the edge surface of the steering wheel,-which is a matter of some difliculty,- may be prevented by employing the vane Y, at an oblique angle, preferably about fortyfive degrees, to the plane of the governing wheel. The surface of this vane, and its distance from the vertical axis of the governing wheel frame which gives it leverage, may be made such that the force tending to swing the governing wheel, due to the wind-pressure against the vane, is large relatively to that due to the wind pressure against the edge of the governing wheel, and the spring M may then be made much stronger than if it has only to act against the force derived from the latter source alone. When, with this construction, the wind is able to swing the governing Wheel, the force by which it swings it, so far as it is derived from pressure against the vane Y, is totally lost as soon as that vane reaches the position shown in dotted linesin Fig. 1, parallel with the winds direction,-and even before it reaches that position, that force may be so far lost that the remainder will be insufficient to overcome the resistance of the spring M,and the swinging movement will be checked, and the steering wheel, brought obliquely into the wind at its rear, will feed the turn-table around in the direction of the arrow X, without excessive rotation until equiviolent wind, and the latter part of the movement will be gradual, and the wheel will not fluctuate into and out of wind, as it may in the absence of this expedient.

The construction of the turn-"table and its platform, and the location of the main-wheel in respect thereto,to-wit, above the top of the tower,are the subjects of my application, Serial No. 454,162, filed December 5, 1892, and none of the features are claimed in this application, and the illustration of the same,

so far as illustrated herein, is made only for the purpose of assisting the understanding of the governing features which are herein claimed.

In the foregoing specification and in the following claims, I have referred to the small wind wheel as the governing or governor wheel, although it has functions which relate both to steering,--that is, determining the direction of the main wheel with respect to the wind,and also to regulating the speed of the main wheel. I have used the term governing wheel as a generic term to include and refer to both or either of these functions according to the connection in which theterm isused.

I claim 1. In combination with the tower and a turntable vertically pivoted thereon, the governor wheel frame vertically pivoted on the turntable; a governor wheel journaled thereon, said frame being free to swing about its pivotal connection to carry the, governor wheel between two limits respectively at right angles and parallel to the main wheel; a spring reacting between the turntable and the governor wheel frame tending to hold the governor wheel toward the limit from which the wind-pressure tends to swing it: substantially as set forth.

2. In combination with the tower and aturntable vertically pivoted thereon, the governor wheel frame vertically pivoted on the turntable; a governor wheel journaled thereon, said frame being free to swing about its pivotal connection to carry the governor wheel between two limits respectively at right-angles and parallel to the main wheel; a spring reacting between the turn-table and the governor wheel frame tending to hold the governor wheel toward the limit from which the winds pressure tends to swing it; and means for adjusting the tension of such spring: substantially as set forth.

. 3. In combination with the tower and a turntable vertically pivoted thereon, the governor wheel frame vertically pivoted on the turntable; a governor wheel journaled thereon, said frame being free to swing about its pivotal connection to carry the governor wheel between two limits respectively at right angles and parallel to the main wheel; a spring reacting between theturn-table and the governor wheel frame tending to hold the governor wheel toward'the limit from which the winds pressure tends to swing it; connections from said spring extending about suitable guides toward the base of the tower; and means for securing the same at the lower end to adjust and hold the spring at desired tension: substantially as set forth.

. 4. In combination with the tower and the turn-table revolving about the vertical axis thereof; the governor wheel supporting frame or yoke vertically pivoted to the turn-table at a point remote from the vertical axis thereof, and means for adjusting it about its vertical pivot between a position parallel and a position at right angles to the main wheel;

substantially as set forth.

5. In combination with the tower and the turn-table vertically pivoted thereon; the governor wheel frame vertically pivoted to the turn-table at a point remote from the vertical axis thereof, and the governor wheel journaled therein; connections from the governor wheel frame adapted to swing it about its vertical pivot on the turn-table, said connections extending about suitable guides toward the base of the tower, and means for securing the same at the lower end: substantially as set forth. I

6. In combination with the tower and the turn-table vertically pivoted thereon; the governor wheel frame vertically pivoted to the turn table; the governor wheel journaled thereon; said frame being free to swing about its said pivotal connection to carry the governor Wheel between two limits, respectively at right angles and parallel to the mainwheel; a spring reacting between the turn-table and the governor wheel frame, tending to hold the governor wheel at one of said limits; suitable connections from said governing wheel frame extending about suitable guides toward the base of the tower, and means for securing the same at the lower end to adjust and hold the governor wheel against the tension of said spring at desired angle to the main wheel; substantially as set forth.

7. In combination with the tower and turntable vertically pivoted thereon; the governor wheel frame vertically pivoted to the turntable; the governor wheel j ournaled thereon; said frame being free to swing about its said pivotal connection to carry the governor wheel between two limits, respectively at right angles and parallel to the main wheel; a spring reacting between the turn-table and the governor wheel frame tending tohold the governor wheel at one of said limits; suitable connections from said governor wheel frame extending about suitable guides toward the base of the tower, said connections comprising asecond spring; and means for securing said connections at the lower end to adjust and hold the governor wheel yieldingly by the tension of the second-mentioned spring against the tension of the first mentioned spring .at desired angle to the main wheel: substantially as set forth.

.8. In combination with the tower and the turn-table vertically pivoted thereon; the govaxis thereof; a spring reacting between said governing wheel frame and the turn-table, tending to hold the governor wheelnormally parallel with the main wheel; suitable connections from the governor wheel guided downward toward the base of the tower; a spring in said connections, and suitable means for securing the lower end of .said connection to hold the governorwheel yieldingly at desired angle to the main wheel: substantially as set forth.

9. In a windmill, in combination with the tower and turn -table, the governor wheel framevertically pivoted to the turn-table; the governor wheel journaled thereon; a spring which tends to hold the governor wheel at right angles to the main wheel, and a vane carried by the governor wheel frame at an angle to the plane of the governor wheel: substantially as set forth.

ernor wheel frame vertically pivoted to the turntable at a point remote from the vertical 10. In a windmill, in combination with the tower and turn table, the governor wheel frame vertically pivoted to the turn-table; the governor wheel journaled thereon; a spring which tends to hold the governor wheel at right angles to the main wheel, and a vane carried by the governor wheel frame at an oblique angle to the plane of the governor wheel: substantially as set forth.

11. In a windmill, in combination with the tower and turn -table, the governor wheel frame vertically pivoted to the turn-table; the governor wheel journaled thereon; a spring which tends to hold the governor wheel at right angles to the main wheel, and a vane carried by the governor wheel frame at an angle to the plane of the governor wheel, and farthr" from the vertical axis of said frame than 1,16 governor wheel: substantially as set forth.

12. In combination with the turn-table, the frame of the governing device vertically pivoted to the turn-table and adapted to swing substantially ninety degrees about its pivot; a spring connected to said frame and to the turn-table and reacting between them with a tendency to hold the former in working relation to the main wheel, one of the connections of said spring being movable, and draft connections extending therefrom over suitable guides toward the foot of the towerto move said spring connection to give desired tension to the spring: substantially as set forth.

13. In combination with a hollow centered tower, the turn-table having a hollow center and pivoted at the center of the tower and adapted to revolve about a vertical axis; a yoke or frame vertically pivoted to the turntable at a point remote from the vertical axis thereof, and having the governor wheel horizontally journaled in it; said yoke or frame having a crank arm and a cable extending from said crank arm toward the vertical axis of the turn-table and down through the hollow center of the turn-table and tower; and the connecting rod suitably swiveled to the cable and guided on the tower; substantially as set forth.

14:. In combination with the tower and the turn-table, the main wheel and a vertical shaft in gear with the main wheel and located at the tower center; the governor wheel carried by the turn-table, and adapted to be held at an angle to the main wheel; and a gearing train connecting said governor wheel withthe towertop; the location of the governor wheel being at that side of a fore and aft vertical plane through the turn table axis, from which the main wheel tends by its geared connection with the vertical shaft to swing the forward side of the turn-table; substantially as set forth.

15. In combination with the tower top and turn-table, the main wheel journaled thereon having its plane of rotation in front of the vertical axis of the turn-table and adapted to be governed by swinging bodily about the axis of the tower to change its angle to the wind; a governor wheel carried by the turn table adapted to be held parallel with the main wheel and a gearing train from said governor wheel to the tower top; the location of the governor wheel being rearward of a plane parallel with the main wheel and containing the vertical axis of the turn-table; substantially as set forth.

16. In combination with the tower and the turn-table, the main wheel having its plane of rotation in front of the vertical axis of the turn-table; a vertical shaft in gear with the main wheel and located at the tower center; the governor wheel carried by the turn-table and adapted to be adjusted between a position parallel to the main wheel and a position at right angles thereto; a gearing train connecting said governorwheel with the tower top, the location of the governor wheel being rearward of a vertical plane through the tower axis parallel with the main wheel and at that side of a fore-and-aft vertical plane through the said axis from which the main wheel tends by its geared connection with the vertical shaft to swing the forward side of the turn-table, substantially as set forth.

17. In combination with the tower and the turn-table, the main wheel journaled thereon a vertical shaft in gear with the main wheel and located at the tower center; the governor wheel carried by the turn-table and adapted to be adjusted between a position parallel to the main wheel and a position at right angles thereto, a gearing train connecting said governor wheel with the tower top, the location of the governor wheel being rearward of a vertical plane through the turn-table axis parallel with the main wheel, and at that side of a fore and aft vertical plane through said axis from which the main wheel tends by its geared connection with the vertical shaft to swing the forward side of the turn-table, substantially as set forth.

18. In combination with the tower, the turntable, the main wheel journaled thereon, the vertical shaft at the tower center in gear with the main wheel, the governor wheel frame vertically pivoted on the turn-table and adapted to swing about its pivot to carry the governor wheel from a position parallel to a position at an angle to the main wheel; the governor wheel journaled on said frame and a gearing train connecting it to the tower top, said governor wheel frame being provided with a vane fixed thereto in a plane at an angle to the plane of rotation of the governor wheel, the pivot of the governor wheelframe being located toward that side of a vertical fore and aft plane through the turn-table axis, from which the main Wheel tends by its gear connection with the vertical shaft to swing the forward side of the turn-table; substantially as and for the purpose set forth.

19. In combination with the tower, the turntable and the main wheel journaled on the turn-table; the steering arm extended outward from the turn-table below the wheel, and the governor wheel frame pivoted thereto at theouter end; the governor wheel journaled in such frame; and the gearing train supported by the steering arm and connecting the governor wheel with the tower; substantially as set forth.

20. In combination with the tower and the turn-table, the main wheel journaled on the turn-table and located above the tower; the steering arm extended outward from the turntable axis near the level of the tower top, and the governor wheel frame pivoted thereto at the outer end; the governor Wheel journaled in such frame, and a gearing train supported on the steering arm and connecting said wheel with the tower: substantially as set forth.

21. In combination with the tower, the horizontal gearD at the top thereof; the turn-table vertically journaled on the tower and adapted to rotate relatively to the gear D, and having the rigid steering arm; the yoke which terminates said arm and the governor wheel vertically pivoted in said terminal yoke; a shaft 9 and the pinion thereon meshing with the gear D; the pinion rigid with the governor wheel; the gear wheel coaxial with the governor wheel frame, and the gear on the outer end of the shaft g and suitable means for adjusting the governor wheel frame about its axis on the steering arm: substantially as set forth.

' 22. In combination with the tower, the horizontal gear D, resting upon the top thereof; the turn-table vertically j ournaled on the tower and resting upon said horizontal gear; whereby the gear is bound between the turntable and the tower-top in frictional contact with both; the governor wheel carried by the turn-table, and the gearing trainfrom said governor wheel to the gear D: substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 7th day of December, 1892.

THOMAS O. PERRY.

Witnesses:

CHAS. S. BURTON, JEAN ELLIOTT.