US1411545A - Governor for fordson tractors - Google Patents

Description

J. E. WIESBROCK.

GOVERNOR FOR FORDSON TRACTORS. APPLICATION HLED FEB. 2. I920.

1,41 1,545. Patented Apr. 4, 1922.

2 SHEETS-SHEET I- o k 55 x o 53 Jf, IA/Z'esEraK/E J. E. WIESBROCK. GOVERNOR FOR FORDSON TRACTORS. APPLICATION FILED FEB. 2. I920.

1,41 1,545. Patented Apr- 4, 1922.

, 2 SHEETS-SHEET 2- l 3/ JOSEPH E. WIESBROCK, OF NAIPERVILLE, ILLINOIS.

GOVERNOR FORv FORDSON TBACTORS.

Specification 0! Letters Patent.

Patented Apr. 4; 1922.

Application filed February 2, 1920. Serial No. 355,824.

To all whom it may concern:

Be it known that LJosEPH E. Wmsenoox,

a citizen of the United States, residing at Naperville. in the county of Du Page and State of Illinois, have invented certain new and useful Improvements in Governors for F ordson Tractors, of which'the following is a specification, reference being had to the accompanying drawings.

This invention relates to means for governing the speed of internal combustion engines, and particularly to a governing device designed with special reference to the Fordson tractor.

@ne object of my invention is to provide a governing device for tractors of this character which may be applied to the tractor without altering or removing any part thereof and which is, therefore, in the form of an attachment.

A further object is to provide a device of this character whereby the speed of the tractor is governed, not by any direct action of the throttle valve of the engine, but by providing means for urging the throttle valve to an open position providing '"overnor actuated means for shifting the throttle valve towards its closed position when. the speed of the engine increases beyond a predetermined degree, and by providing means for so controlling the governor actuated means that the speed at which the governor will operate to reduce the opening of the throttle valve may be changed whenever desired.

A further object is to provide a construction of this character wherein the governor is driven by the fan belt of the engine.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a motor car engine and radiator with my governing device applied thereto;

Figure 2 is a perspective view of the connection between shafts 41 and 38;

Figure 3 is a. front elevation of the governor partly in section;

Figure A} is a top plan view thereof.

Referring to these drawings, it will be seen that l have illustrated a l ordson tractor, or so much thereof as is pertinent to the present case, this tractor including an engine block -A, exhaust manifold B, the dash board C, theradiator l"), and the gasoline tank F. All these parts are of the usual construction. My governor attachment comprises a supporting angle iron, designated 10, which is adapted to be mounted upon the base of the engine between the radiator and the motor and is held in place by the two cap screws over the timing gears. Mounted upon this angle iron sup porting member is a shaft 11 which carries a wooden or friction wheel 12 and a pulley 13 whose diameter is much smaller than the diameter of the friction wheel 12. The frame 14 of the governor is also mounted upon this angle iron and supports the horizontal shaft 15 which carries the gear wheel 16 and the belt wheel 17' from which a crossed belt 18 runs to the pulley 13. Carried upon the governor frame is the bevelled gear wheel 19 which meshes with the bevelled gear wheel 16 and which is concentric to the central rod 20.

Mounted upon this gear wheel is a yoke 21. having bifurcated ears in which are mounted the governor arms 22, each provided with a ball at its extremity and formed inward of its pivot 23 with an upwardly curved lug 24, these lugs engaging beneath a dislr 25 which surrounds the shaft 20 or rod, and which is urged downward by a spring 26 hearing at its upper end against, a washer 27 extending outward from a hub 28 forming part of the member 21. Surrounding this spring is a sleeve 29 which rests upon the disk 25, this sleeve being slotted for the passage of the screw 27", which screw acts as a guide but permits the sleeve to shift longitudinally. This sleeve at its upper end carries anti-friction members 30 which are adapted to bear against a head 31 on the upper end of the shaft or rod 20.

It will be obvious now that the spring 26 normally acts to urge the dish 25 downward and draw the governor balls toward the shaft. VVhen, however, the gear wheel 19 is rotated, the governor'balls will be thrown outward by centrifugal force and the angular ends 24: will act to lift the sleeve. the upper end of this sleeve strike the head 31, it is obvious that they will lift up on the rod 20 and this rod, through the connections which will now be described, operates the throttle valve of the engine.

The lower end of the rod 20 is mounted inan arm 32 carried upon a transverse shaft When the anti-friction balls 30 at lias connected thereto an arm 34. Connected to one end of this arm 34 is a coil' spring 35, and the other end of this arm extends forward and is provided with a plurality of apertures 36, Of course, this arm 34 ex tends transversely of the engine of the tractor and has connected to it the upwardly extending link 37. Mounted in suitable brackets attached to the engine block or in any other suitable manner is a rock shaft 38 forming part of my attachment, Whose extremity is angled, as at 39, to form a crank, the wrist pin of which is engaged with the link 37. The opposite end of this rock shaft 38 is also cranked, as at 40.

The Fordson tractor, for the purpose of controlling the throttle, is provided with a longitudinally extending throttle controlling shaft 41 which, at its end, is angularly.

bent or cranked, as at 42, and engaged with a transverse lever 43 mounted upon the stem 44 of the throttle or butterfly valve 45. The rear end of this shaft 41 extends rearward through the dash board of the tractor to a position where it may be readily handled.

My attachment includes a clip or arm 46 so formed as to be clamped upon the shaft 41 and to rotate therewith, and this is bifurcated at its end for the attachment of a link 47 which, in turn, is connected to the crank arm 40 of the rock shaft 38. Thus, it will be obvious that when the shaft 38 is oscillated in one direction by the governor, the shaft 41 will be oscillated to cause the throttle valve to move towards it fully closed posit-ion, while when the speed of the enine decreases, the shaft 41 will be oscillated 1n the opposite direction to again bring the throttle to its normal position. This shaft 41 is ordinarily provided with an arm 48 to which a spring 49 is connected, this spring being attached 'to the dash board and normally acting to open the throttle. This spring is relatively light, but the closing of the throttle against the vernor takes place against the resistance 0 this spring.

It is particularly desirable that means be provided whereby the governor will function at different speeds so as to give a flexibility and range of speeds to the tractor, and to this end the extremity of the arm 34 carries a coil 'spring 35. The lower end of this spring is attached to a bell crank lever 51 mounted upon a bracket 52, which, at its upper end, is angled and perforated for the passage of one of the bolts which holds the gasoline tank to the engine and which, at its lower end, is held in place by one of the bolts holding the exhaust manifold to the engine block. Mounted upon the rear end of the engine frame and specifically upon a bracket 53 held in place by the bolt that holds the rear end of the kerosene tank in determine place, is a lever 54 which is connected by a connecting rod 55 to the upwardly extending arm of the bell crank lever 51. By sh fting this lever, it is obvious that the tension on the spring 35 may be increased and that this tension increases the resistance to the outward movement of the governor balls so that before the governor balls can shift to a position to cause the sleeve 29 to raise the rod 31, there must be a considerable increase in the speed of the engine. By relaxing the tension on this spring 35, the resistance to the movement of the governor balls is decreased and they will function to lift the valve controlling rod 31 at a lower speed, and if all tension is entirely relaxed from this pring, it is obvious that the governor balls will act normally to prevent an increase in the speed of the engine from a predetermined point.

I do not wish to be limited to any specific form of governor, as it is obvious that the governor might be of various forms without departing from the spirit of the invention. In the mechanism which I illustrate, however, I provide an attachment which may be readil applied to the Fordson tractor to provi e for an automatic governing of the speed thereof. This attachment is relativel simple and has been found thoroughly e fective in practice. It permits the control of the throttle by the throttle controlling shaft 41 of the engine in the usual manner, provided the engine is not running at a high enough speed to cause the governor balls to function, and at the same time permits of this speed being chan ed or controlled through the lever 54. he mechanism is very simple, can be readily put in place without any change in the construction of the, tractor, and provides a overning attachment which is particularly necessary 1 for tractors where high speeds are undesirable.

Obviously, many modifications might be made in the details of the construction without departing from the spirit of the invention as defined in the appended claims.

1. A governing attachment for tractors comprising a supporting member having a governor mounted thereon, the governor 1ncluding a central rod, a governor 0 rated sleeve acting to shift the rod in one dlrection when the governor is rotated beyond a prespeed, said rod being shiftable independently of said sleeve, means carried by said supporting member for transmitting the power of the engine to the overnor, a

lever operatively connected to t e rod and shifted thereby as the rod moves longitudinally, a shaft operatively connected to said lever and adapted to be mounted upon the engine and operatively connected to oscillate with the throttle operating shaft of the engine, a contractile spring connected to the opposite-end of the first named lever and which, when placed under tension, resists longitudinal movement of the central rbd in onedirection, and manually operable means for adjusting the tension of said spring, and including a lever operatively connected to one end of the spring and adapted to stretch the spring when shifted in one direction.

2. A governing attachment for internal combustion engine driven tractors comprising a supporting member adapted to be .mounted upon the engine, a power shaft carried thereby and extending therefrom and having means whereby it may be operatively connected to a rotating part of the engine, a rotatable member operatively geared to said power shaft and having centrifugally actuated governor balls, a spring resisting outward movement of the governor balls, a centrally disposed rod shifted in one direction by the outward movement of the governor balls, a lever operatively connected to the rod and shifted thereby, a spring adapt ed to resist the movement of the rod under the action of the governor balls, a longitudi nally extending rock shaft having crank arms at its opposite ends, one of said arms being operatively connected to said lever, bearings adapted to be attached to the engine on which said rock shaft is mounted, a link connected to the crank arm to one end of the rock shaft, an arm connected to said link and having a clamp whereby itmay be connected to the throttle controlling rock shaft of the engine, and means for tensioning said last named spring or relaxing the tension thereon comprising a bracket adapted to be mounted upon the engine, a bell crank mounted on the bracket and having one arm connected to the spring, a rod extending from said arm, a lever to which the rod is connected, and a bracket upon which the lever is pivoted adapted to be attached to the tractor.

3. The combination with a tractor having an. internal combustion engine, a throttle valve, a longitudinally extending shaft operatively connected to the throttle valve to rotate it, and a fan belt of means for governing the movement of the throttle valve comprising a supporting member mounted upon the engine at the forward end thereof, a governor frame carried by said s pporting member and supporting a shaft, means operatively engaging the shaft with a rotated element on the engine, a gear wheel on the governor frame operatively engaged by said shaft and rotating in a horizontal plane, a central, verticallyv movable rod around which said gear wheel rotates, a sleeve on the rod, governor balls rotating with said gear wheel and operatively connected to said sleeve to cause a lifting of the sleeve, said sleeve lifting the rod, a lever pivoted to the governor frame and extending transversely of the engine, an operative connection between the lower end of the vertically movable rod and said lever, a spring connected to this end of the lever and adapted, when under tension, to resist upward movement of the vertical rod and thereby,

resist the outward movement of the governor balls, alongitudinally extending rock shaft disposed parallel to the throttle controlling regular shaft and having crank arms at its opposite ends, the forward crank arm being operatively connected to the end of said lever opposite the spring, an arm on the throttle controlling shaft, a link connecting said arm with the crank arm on the second named rock shaft, and means for tensioning the first named spring comprising a bell crank lever mounted upon the engine and having one arm connected to the lower end of said spring, a link connected to the other arm of the bell crank lever, and a manually operable lever mounted on the tractor to which said rod is connected.

In testimony whereof I hereunto affix: my signature.

JOSEPH E. WIESBROUK.

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