US1148318A - Governor. - Google Patents

Description

E. R. HEWITT.

1 GOVERNOR.

APPLICATiGN FILED DEC. 23, 1-914.

1, 148,81 Patented July 27, 1915.

2 SHEETS-SHEET 1-.

WITNESSES INVE/VTOI? ,7 AG M, 5

nDwAnD n. HEWITT, or MIDVALE, new JERSEY, assumes no rmnnnArronnm MOTOR COMPANY, ornnw roan, n. Y., A oonPOnM-ron or DnLAwAnE.

GOVERNOR.

Application filed December 23, 1.914. Serial No. 878,808.

To all whom it may concern:

Be. it known that I, EDWARD R. HEWITT,

a citizen of the United States, and residence being had to the accompanying drawings, which form a part hereof.

This invention relates to governors and is designed primarily with reference to the use thereof in connection with internal combustion motors for automobiles, motor boats,

etc.

Governors hitherto known have not been entirely satisfactory in the commercial use of smaller internal combustion engines, by reason of their somewhat involved organization, their dependence upon springs, their relative bulkiness, their susceptibility to injury and derangement, and their expensiveness.

The present invention has for its principal object to overcome the ob ections noted and to provide a governor wh ch shall 1nclude few moving parts, occupya minimum space, be of simple construction, easy of adjustment or repair, and inexpensive as regards both the initial cost and the cost of installation.

In realizing the objects of the invention, a novel principle of operation is employed and the 'usual toggle movements or bodily movements of supporting shafts for elements of the governor, are avoided.

The improved governor includes, briefly stated, governor balls which are mounted on any available shaft, the speed of which is dependent upon the speed of the motor, and which governor balls are subject, in a well known manner, to the action of centrifugal force to determine their positions radially with respect to their supporting shaft. These governor balls have formed thereon, cam surfaces, with which engage a sli'dable sleeve, mountedeon any available shaft and in juxtaposition to the governor balls. This slidable "sleeve is operatively connected through slidable links and levers with the valve, timen, or other element to be controlled. It is in the relationship of the governor balls to the sliding sleeve, wher eby radial movement of the balls is translated into an axial movement of the sleeve'and thereby transmitted to the controlled element, that the gist of this invention resides. One preferred embodiment of the invention is illustrated, byway of example, in,

the accompanying drawings, in which- Figure '1 is a fragmentary view in vertical section taken through the forward end of an internal combustion-motor equipped with the improved governor. Fig. 2 is a view in front elevation of the motor shown in Fig. 1, part of the front plate of the motor housing being broken away to show the relationship of the parts of the governor to each other. Fig. 3 is a View partly in plan and partly in horizontal section taken on planes indicated by the broken line 3-3 of Fig. 2 and indicating particularly aportion of the shaft to be controlled by the governor. I

In the drawings only so much of the housing a of an internal combustion motor is illustrated, as. is necessary for a clear understanding of the construction and operation of the improved governor, and a convenient Specification of Letters Patent. 7 Pmflgmmfl July 2'? 1931115,

disposition thereof with respect to the other parts of the motor.. As this description proceeds, it will be evident that the inven- I tion is not to be limited to the character of the motor with which the governor is used, nor to the place of mounting of the governor within the engine casing. In the illustrated convenient to mount the governor at the forward end of the engine casing a, and the cam shaft 6, or an extension thereof, formcamshaft b is also secured a spider e hav- Y ing radial arms 6' and e formed therewith. This spider may be fixed to the cam shaft b in any convenient manner although, as illustrated, it may be found desirable to thread it removably on to the camshaft as by the threads indicated at 15 Where only two governoy/weights or balls are employed, as

85 embodiment, however, it has been found dial sliding movement of the weights. Normally, it will be observed from Fig. 2, the weights f are held at their innermost positions on the respective arms 6', 6 by means of suitable springs g operatively connected therewith. Outward movement of the .weights, under the influence of centrifugal action, will be made against the action of the springs g.

Carried on the weights 7, or formed integral therewith, are suitable cam surfaces,

- indicated generally at f, the said surfaces being inclined generally with respect to the axes of the governor weights f and being reversely disposed with respect to each other.

On. the forward extension of the cam shaft Z), or on any other available shaft, is mounted loosely a sleeve h on which is formed a conical or tapered flange h, the whole constituting in. effect, a cup-like member, the flaring mouth of which extends toward the cam surfaces, f of the governor weights f, and the rim or edge of which engages said surfaces. In order to reduce the friction between these engaging surfaces, the said edge or rim of the flange it may be rounded. In engagement with the sleeve 71.,

, or a suitable bearing collar 2', carried thereon, is a forked lever is, journaled as at 70 in suitable bearings Z, carried by the front plate a of the engine casinga. The forked lever 70' is formed with a single arm 72 extending on the other side of the journaled bearing 70 and away from the forked member la, and: the free end of said rim is en; larged as at 70 to constitute an ample abutment for a spring pressed plunger Z, which may be termed generally the controlled element, it being understood that this rod may be connected with the butterfly valve,'the timer, or any other part by which the speed of the motor may be controlled. The function of the spring Z by which the rod Z is held in engagement with the enlargement 72 of the forked lever is, is to maintain the edge or rim of the flange k in constant engagement with thecam surfaces f of the governorballs 7.

In operation, rotation of the crank shaft 0 is transmitted to the cam shaft 6 through the meshing gears 0 and b, the cam shaft carrying with it the spider e. The radial positions of the governor balls on their respective arms 6 and 6, will. of course, be dependent upon the speed of rotation of the cam shaft 6, the tension of the springs g being fixed. As the governor balls move outwardly, under centrifugal action, along the arms e and e the cam surfaces f will ride along the edge or rim of. the flange h of the sleeve 71., so that the sleeve it will be moved'axially along the cam shaft I), such axial movement being transmitted through the forked lever 7; to the spring pressed controlled rod or element Z, the movement of "this rod bringing about the desired control of the motor speed, in a manner well known and hereinbefore suggested. Conversely, if the speed of the motor decreases so as to permit the springs g to draw the governor weights f toward each other, the cam surfaces f are moved relative to the flange h of the sleeve 72. so as to permit the latter to be pressed to the right, as viewed in Fig. 1, under the action of the spring Z, such movement permitting a corresponding movement of the cQIItI'OllECl rod Z, and a change in the motor condition.

alt is to be noted particularly that the governor control in accordance with the present invention, is effected by the conjoint action of the radially movable governor balls and the axially slidable sleeve. Neither of these elements is fixed, so the degree of sensitiveness of control is approximately twice that present in known governors. Further, by making it unnecessary for the supporting shaft of any one of the governor elements to be movable, space is economized, toggle actions are eliminated, the number of elements is reduced, and the cost of the governor is lessened. These advantages are all realized without sacrificing any of the desirable features of known governors and, indeed, a more sensitive control is secured along with a certainty of invariable operation.

Changes in construction of the improved governor and rearrangement of the parts thereof, both with respect to each other, and to the motor elements, may be made, but all such changes and rearrangements are to be deemed within the spirit of this invention provided they fall within the scope of the appended claims.

I claim as my invention:

1. A governor including weights, a shaft on which the weights are supported, the weights being subjected to centrifugal force by the rotation of the shaft, cams formed on the weights, and an element to be controlled by the governor, said element being operatively engaged with the cams on the Weights, whereby movement of the weights causes a corresponding movement of the controlled element through the action of the cams 2. A governor including weights, a shaft on which the weights are carried and with respect to which they are radially movable under centrifugal action, a sleeve slidable axially and alonga line at right angles to the axes of said weights, cams formed on the weights and with which the sleeve engages 'whereby movement of the weights causes 7 controlled element in engagement with the ment of the weights is translated into axial movement of the sleeve, and a controlled element in engagement with the sleeve.

4. In combination with a driven shaft, a governor mounted thereon and including weights movable radially with respect there to, cams formed on the weights, a cup shaped sleeve slidably mounted on said shaft and having itt edge'engaged with the cams, whereby radial movement of the weights causes axial movement of the sleeve, and a sleeve.

5. In combination with a driven shaft, a spider carried thereby and provided with radially extendin arms, weights mounted on said arms and s idable under centrifugal action, springs operatively connected to said 7 weights to oppose such sliding movement, 1 cams formed on the weights, a sleeve mounted slidably on said shaft and formed with a circular flange, the edge of which engages with said cams, whereby radial movement of the weights causes an axial movement of the sleeve, and a controlled element in engagement with thesleeve.

6. In combination with a driven shaft of a motor, a governor mounted thereon and ineluding Weights movable radially with respect thereto, a sleeve slidably mounted on said shaft, cams formed on the weights and engaged operatively by said sleeve, whereby radial movement of the weights causes an Y axial movement of the sleeve, a lever connected with said sleeve, a controlled element engaged by the lever, and a spring to hold the sleeve against the cams. a

This specification signed and witnessed November, A. 1)., 1914:.

EDWARD R. HEWITT. Witnesses:

M. Fnnvs, H. M. HENDRICKSON.

Gopiee of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0

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