US653816A - Governor. - Google Patents

Description

No. 653,8!6. Patented'luly I7, I900.- G. E. &. C. W. MILLER.

GOVERNOR.

(Application filed Oct. 25, 1899.) v (mi Model.) 2 Sheets8heet l.

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No. 653,8!6. Patented luly I7, 1900, G. E. 8:. C. W. MILLER.

GOVERNOR. (Application n'led Oct. 25, 1599.)

(No Modal.) 2 $l1oets-Shetat 2 NITED STATES PATENT FFICE.

euovn E. MILLER AND CARE-Y w. MILLER, or ADA, o1-11o.

GOVERNOR;

SPECIFICATION forming part of Letters Patent No. 653 ,816, dated July 17, 1901); Application filed October 25,1399. Serial No: 734,750. (No model.)

To all whom it may concern.-

Be it known that we, GROVE E. MILLER and CAREY XV. MILLER, citizens of the United States, residing at Ada, in the county of Hardin and State of Ohio, have invented a new and useful Governor, of which the following is a specification.

This invention relates to governors for engines, and more particularly to that class known as centrifugal governors, the object of the invention being to provide, in combination with a fiy-wheel, a weighted arm or lever which is fulcrumed to the wheel and which is operatively connected with a plate to force the latter outwardly and against a cut-0d lever when the wheel is rotated at excessive speed and in order to cut 0d the supply of steam at such times.

In the drawings forming a portion of this specification, and in which similar numerals of reference designate like and corresponding parts in the several views, Figure 1 is a front View of a flywheel equipped with a governor constructed in accordance with this invention. Fig. 2 is a section on line 2 2 and showing the positions of the parts when the weight is swung outwardly to partially out off the supply of steam. Fig. 3 is a section on line 3 3 of Fig. 2 and showing the positions of the parts when inoperative. Fig. 4 is a section on line at 4 of Fig. 3.

Referring now to the drawings, 5 represents the crank-shaft of an engine of any style and having a bearing in a pillow-block 6, which block has a projection 7 upon one face, which is provided with a downwardly-extending arm 8, having a cut-off lever 9 pivoted thereto and held normally in a vertical position by means of a spring 10, connected with the lever 9 and the arm 8. The shaft 5 extends through the projection 7, which forms, in effect, a bearing for the shaft and projects beyond the outer face thereof, and upon this outwardly-projecting end is fixed a flywheel 11.

Upon the face of the hub of the fly-wheel adjacent to the projection 7 is fixed a plate 13, which extends at right angles to the axis of the wheel. A second plate 14.- is disposed upon the shaft 5 between the projection 7 and plate 13 and has a longitudinal slot 15,

through the medium of which it fits loosely upon the shaft, and which slot permits move ment of the plate radially of the shaft. ,The plate 13 is provided with cars 16 and 17 at its opposite ends, respectively, and through these ears are formed perforations,with which the plate 14 normally against the plate 13, a

helical spring 26 is attached at one end to a screw 27 upon one of the spokes of the flywheel, while the opposite end is attached to the lug 25, so that in its tendency to hold the plate 14 retracted it will swing it inwardly upon the links 20 and 21, so it will lie upon the plate 13.

From the above description it will be seen that if the plate l4=be drawn against the tendency of the spring 26 it will move not only transversely of the shaft 5, but also longitudinally thereof, to the position shown in Fig. 2 of the drawings andin its movement will engage the roller 28, which is mounted on the lever 9 and will operate to move the lever against the tendency of the spring 10. In order to thus swing the plate outwardly or longitudinally of the shaft 5, a bell-crank lever is mounted upon one of the spokes 30 of the flywheel, the shaft 31 of the lever being passed through the spoke. One arm 32 of this bell-crank lever lies upon the side of the fly-wheel adjacent to the plate 14 and is adjustably connected at its outer end with the end of the arm 32 with respect to the plate 14.. The opposite end 37 of the bellcrank leverlies upon the outer face of the fly-wheel, as shown, and is provided with a weight 38 at its outer end.

From the above description it will be seen that if the fly-wheel 11 be rotated the action of centrifugal force upon the weight 38 will tend to move it outwardly of the fly-wheel, with the result that the rod 33 will be drawn outwardly and will correspondingly move the plate 14 to swingit against the roller 28, with the result that the lever 9 will be moved in the direction of the pillow-block 6. If the end of the lever 9 be then connected with the governor-valve of the engine in the usual manner, this movement of the lever will act to cut off the supply of steam to the engine, and the engine will thus slow down. As the speed of the fly-wheel decreases the centrifugal action upon the weight 38 will decrease, when the spring 26 will act to draw the plate 1% inwardly and away from the roller 28,when the spring will return the lever 9 to further open the governor-valve.

It will of course be understood that the structure above described may be employed in connection with an engine of any desired type to which it is applicable and that varithe fiy-wheel.

ons modifications may be made without departing from the spirit of the invention. Also it will be understood that, if desired, in or der to assist the action of the spring 26 by relieving it of the weight 38 an additional spring may be employed and may be arranged as illustrated, this spring 40 being mounted upon the outer end of a rod $1, the inner end of which is pivotally connected with the arm 37, and which rod 41 is passed through a lug 42 upon one of the spokes of One end of the spring 40 bears against the outer face of the lugl2, while the opposite end bearsagainst a nut 43 upon the rod 41, this spring tending to hold the weighted arm 37 inwardly of the wheel, as shown.

The lever 9 is mounted upon a stubshaft 47, which extends outwardly from the arm 8, and the spring 10, above referred to, encircles this shaft and has one end fixed to the lever 9. The outer end of the spring 10 is fixed to a collar 44:, having a reduced portion provided with radial slots 45, which are adapted to receive the ends of a pin 43, passed through the stub-shaft. The spring 10 holds the collar 44 pressed outwardly, so as to maintain engagement of the slots 45 and the pin 46, and when it is desired to increase the tenswinging movement toward and away from the first plate, a shaft mounted in the Wheel, a lever at one end of the shaft provided with a weight, a spring connected with the lever for holding it yieldably, a second lever fixed to the shaft, and a rod connecting the second lever with the second plate.

2. The combination with a fly-wheel, and a valve-operatin g lever, of a plate fixed to the wheel, a second plate connected with the first plate through the medium of the links, whereby the second plate may swing toward and away from the first plate and into and out of engagement with the valve-operating lever,

a shaft mountedin the wheel, a lever fixed to one end of the shaft and provided with a weight, a rod pivoted to the lever, a spring connecting the rod with the wheel and adapt ed to hold the lever yieldably, asecond lever fixed to the shaft, and a rod connected with the second plate and adjustably connected with the second lever.

3. The combination with a fly-wheel and a valveoperating lever, of a plate mounted upon the wheel, a second plate having link connections with the first plate, a bell-crank lever mounted upon the wheel, connections between one end of the bell-crank lever and the second plate to move said plate upon-its links longitudinally and outwardly in the direction of the operating-lever, a weight upon the opposite end of the bell-crank lever for moving the lever under the influence of centrifugal force, and means for returning the plate when the force is diminished.

In testimony that we claim the foregoing as our own we have hereto afiixed our signatures in the presence of two witnesses.

GROVE E. MILLER. CAREY W. MILLER.

\Vitnesses:

BENJ. A. WELoH, JNO. I. MULLIN.

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