US1120434A - Governor. - Google Patents

Description

P. G. BAILEY.

GOVERNOR.

APPLICATION FILED MAR. 1l, 1912.

Patented Dec. 8, 1914.

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FRED C. BAILEY, OF 70EUR-N, MASSACHUSETTS, ASSGNOR OF ONE-HALF TO ROBERT E. HARRISON, JOSEPH D. HARRISON, `\TILLIAM R, FARRESON, AND JOHN' J. HARRISON, ALL OF SOUTH BOSTON, MASSACHUSETTS.

GOVERNOR.

Application filed March 11, 1912.

To all whom t may concern Be it known that I, FRED C. BAILEY, a citizen of the United States, of Woburn, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Governors, of which the following is a specification.

The present invention relates to speed governors, and is particularly designed for use with the internal combustion motors of such vehicles as motor trucks.

it is the primary purpose of this invention to furnish a governor which will not operate to regulate the speed until very nearly the maximum allowable speed and power have been attained by the motor, and will then act quickly to throttle the motor suliiciently to prevent its exceeding this speed.

l have had in view also other objects necessary to the accomplishment of this main object, which are to so construct and arrange the parts of the governor that the floating period of the weights may be very short, the force resisting movement of the weights may be approximately constant and invariable throughout the entire range of movement, and the greatest movement of the parts operated by the weights may occur when the weights approach the positions assumed by them at maximum speed.

Another object has been to make the governor as a whole of the greatest simplicity and compactness.

@ne of the possible forms of governor embodying the principles of my present invention and suitable for accomplishing the objects above noted is described in detail in the following specification, and illustrated in the accompanying drawings which form a part thereof.

In the drawings: Figure 1 is a side elevation of the working parts of the governor,

an inclosing case being also shown in section; Fig. 2 is an elevation of the same parts as seen from the right of Fig. 1, the case again being shown in section; Fig. 3 is a longitudinal section on line 3 3 kof Fig. 2; Fig. 4 is a cross section on line ia of Fig. 2; Fig. 5 is a section on line 5 5 of Fig. a; Fig. 6 is a cross section on line 6-6 of Fig. 2; Fig. 7 is an elevation of the weights detached; Fig. 8 is a side View of the weights, showing the means for adjusting the spring.

Speccaton of Letters Patent.

Patented Dec. 8, 1914.

Serial No. 633,175.

Like reference characters represent the same parts in all the figures.

1lieferringto the drawings, 1 is a shaft which is driven by the motor to be controlled by the governor. 1t rotates in bearings 2 and 3 of a casing l, which contains the parts of the governor, said casing being supported in a stationary position by any suitable means, not shown. Fitted into the shaft and passing through it, with its ends extending from opposite sides of the shaft, is a pin 5 which furnishes the pivotal support for the governor weights G and 7. rlhese weights are preferably made as parts of one single piece and are formed as segments of the zone of a sphere. They are of approximately equal shape and mass and are connected together by a hub portion 8. This hub portion is cut through midway of its length to admit the shaft, which thus passes between the weights. The parts of the hub which lie on opposite sides of the shaft receive the ends of the pin 5. Thereby the weights are pivotally connected to the shaft in such a way that they lie on opposite sides of the shaft diametrically opposite to one another with respect to their pivotal axis (the pin 5), and are balanced. rlheir faces which lie next to the shaft are grooved at 9 and 10, as shown in Fig. 7, so that they may occupy positions as shown in Figs. 1 and 3, with their centers of gravity close to the axis of the shaft.

.Slidingly mounted upon the shaft sleeve l1 having a disk or flange 1Q engaged with an arm 13 on a shaft l-t, which shaft also carries an arm 15 connected to a link 16 which leads to the throttle of the motor or to a throttle operating mechanism. When the sleeve is raised from the position shown in Fig. 1, the link 1G is moved in the direction for closing the throttle. A connection is made from the weight 7 to the sleeve 11 by means of a link 17. rhis link has diver-ging arms 1S which embrace a lug 19 at one side of the sleeve 11 and have eyes 2O containing the ends of a pin 21 which passes through the lug 19. Such lug has a slot at one side and is provided with wings adapted to be drawn together by a screw 23 for clamping the pin 21 in place. Connection between the link and weight 7 is made by a pin 24: which passes through lugs on the weight and also through an eye 26 on the link. A part of this eye is divided to form a tongue 27, Vwhich may be clamped upon the` pin` 24 by a screw 28.

The weights are normally retained in the position shown in the drawings by springs 29 coiled into a flat spiral like a watch spring and located upon opposite sides of the weights. Une end of each such spring is connected to a pin 30 on the weight 6, and its'other end is connected t-o a sleeve 31 which surrounds the end portion of the pin 5. This sleeve may be rotated to regulate the tension of the spring, for which purpose it has a head 32, and when adjusted it is secured by a. pin passing through registering holes therein and in the pivot 5. The springsA are of such length that the distortion given them when they pass from one extreme position to the other is so slight as not to increase appreciably the resistance which they oder to the swinging of the looseness.

weights. This movement of the weights is limited by a rigid stop 34 secured to the weight 6, which is adapted to strike the shaftA 1. The position occupied by the weights at maximum speed is indicated by 4dotted lines in F ig. 3. ln this, position the stop has engaged the shaft and prevented further movement.

The engagement between the disk 12 Vand the arm 13 is of a character' such as to permit relative movement due to changing angularity of the arm without occasioning It is provided by a block 35 having a slot which receives the rim of the disk and is contained in a socket 36 on the arm. The block and socket are cylindrical, hence the socket turns around the block as they move up and down, while the block is able to move lrelatively to the disk in the plane of the latter.

'The case 4 is approximately spherical inV form with a sufficiently large diameter to contain the weights, but not large enough to Vprovide more than just suiiicient space to permit unobstructed movement thereof. lt is preferably made in two cup-shaped parts secured together, as indicated in the drawings, at their rims. At the top of the case a chamber 37 is formed to contain theV disk 12 and the arm 13. A This portion of the case provides bearings for the shaft 14, one of which is formed in the case itself and the other by a bushing 3S screwed into the case.

The tension of the springs 29 is adjusted to such a degree that the weights are not dislodged by centrifugal force until the motor reaches practically its maximum predeterminedA speed, and then owing to the fact that their resistance does not materially increase, they permit the Weights to be very sensitive to slight changes of speed. Thus when the speed Y is at the maximum the weights quickly fly outwardly to a position corresponding to the speed, and then are able to move considerably in response to very slight speed changes. Thus the speed of the motor at the maximum point is exactly regulated. Owing also to the disposition of the link 17, the movements of the throttle operating mechanism are greaterY in proportion to movements of the weights when the latter are thrown outward to the fullest extent than when they are nearest to the shaft. This is because both points of connection, the pins 21 and 24, of the link with the sleeve 11 and with the weight 7 respectively, are at the side, and both on the same side, of the plane which includes and is defined by the intersecting axes of the shaft 1 and the pivot pin 5; and because, also, the line between these vpoints of connection makes an acuto angle with the line between the centers of pin 24 and pivot 5, when the weights are in their inoperative position. Thereby the increasing movement of the weights from the inoperative position brings the path of movement of pin 24 continuously nearer coincidence with the line between pins 21 and 24 (which is the line of the link) and makes the movement of the sleeve practically equal tothe movement of pin 24 when the weights'approach their outermost position.

Such a governor can be made of ample power owing tothe shape of the weights, which permits them to have as great mass as may be required. At the same time the weights are preferably balanced and the governor may be used'in any position, whether vertical, horizontal or inclined; and finally the entire device is exceedingly compact and simple, with very few working parts, and those few of strong construction.

I claim:

l. A governor comprising a shaft-having a. pivot pin at right a-ngles to its length, united weights pivoted upon said pin and having approximately equal masses located diametrically opposite to one another with respectI to .said pin, and on opposite sides of the shaft, a sleeve slidingly mounted upon the shaft, a link connecting said sleeve with `one of the weights, a flange or collar on the sleeve, an arm pivotally mounted beside said'collar,4 a block rotatably contained in a socket onv said arm and having a slot containing the rim of said collar, and means next to the shaft whereby their centers of gravity may be brought into close proximity with the axis of the shaft, and means for normally holding the weights so that such grooves receive the shaft.

A governor comprising a shaft, a pin intersecting the axis of said shaft at right angles and projecting at opposite ends therefrom, governor weights inthe form of sectors of the central Zone of a sphere, arranged on opposite sides of the shaft and pin, and having an intermediate hub portion containing the ends of said pin, said weights being radially grooved on the sides next to the shaft whereby their centers of gravity may be brought into close proximity with the shaft, and a stop device to one of the weights and projecting from the side thereof opposite to the side in which the groove is located, said stop being adapted to engage the shaft and limit the movement given to the weights by centrifugal force.

'-l. Si governor comprising in combination a shaft, oppositely located weights carried by said shaft and pivoted thereto on a pivot perpendicular to that of the shaft, whereby to swing in and out with respect to the shaft, and a spring connected with said weights and so disposed as to tend to hold them close to the shaft and to yieldingly oppose their movement away from the shaft, said spring being connected at one end to the weights and at the other end to the pivot of said weights, and having a relatively great length in proportion to the distortion given it by movement of the weights, whereby its stiifness remains approximately uniform through the entire range of movement of the weights, and the fioating period of the latter is short.

5. A governor comprising in combination with a rotary shaft, balanced governor weights pivoted t-o said shaft on an axis transverse to the axis of the shaft, a slide mounted on said shaft and engaged with said weights, whereby to be moved by the weights, such slide having a flange, a pivotally mounted arm having a cylindrical socket, a block mounted oscillatively in said socket and having a slot in which said flange is contained, and means operated by said arm for controlling a motor throttle.

G. A governor comprising a substantially cylindrical casing, a shaft passing through the center of said casing, a transverse pivot member carried by said shaft having its axis in the center of said casing, rigidly connected weights lying on respectively opposite sides of both the shaft and the pivot member and oscillatively mounted on the latter, said Weights having their outer sides formed as spherical surfaces concentric with the casing and sufficiently removed from the inner surface of the latter to permit free movement, a slide mounted on said shaft within said casing, a link connected pivotally with said slide and with one of the weights at a point eccentric to lthe pivot member and mechanism engaged with and operated by said slide for controlling the throttle of a motor.

7. A. governor comprising a shaft, trunnions extending to opposite sides of said shaft, oppositely arranged balanced governor weights having central hub portions flanking the shaft and pivoted on said trunnions, the ends of said trunnions extending beyond said hub portions, and a spring coiled spirally around each trunnion end, each snch spring being connected at one end to the trunnion and at the other end to the weights.

S. A governor comprising a shaft, trunnions extending to opposite sides of said shaft, oppositely arranged balanced governor weights having central hub portions flanking the shaft and pivoted on said trunnions, the ends of said trunnions extending beyond said hub portions, and a spring coiled spirally around 'each trunnion end, each such spring being connected at one end to the trunnion and at the other end to the weights, the means of attachment between the spring and trunnion being a sleeve rotatably surrounding the trunnion and movable about the same for winding the spring, and a displaceable locking member for holding the sleeve and trunnion against relative movement.

ln testimony whereof I have aflixed my signature, in presence of two witnesses.

FRED C. BAILEY.

lVitnesses 2 C. F. BROWN, P. W. PnzzE'rTI.

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

Washington, D. C.

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