US1410462A - Engine governor - Google Patents

Description

T. B. FUNK AND C. M. EASON.

ENGINE GOVERNOR.

APPLICATION FILED JULY 3|, I920.

1,410,462, Patented Mar. 21, 1922.

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T. B. FUNK AND C. M. EASON.

ENGINE GOVERNOR.

APPLICATION FILED JULY 31.1920.

1,41 0,462. Patented Mar. 21, 1922.

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TRUMAN B. FUNK, OF MOLINE, ILLINGIS, AND CLARENCE M. EASON,

N131 JERSEY; SAID EASON ASSIGNOR T0 mm crate-a.

or HARRISON, sam rum.

ENGINE GOVRNOR.

Application filed July 31,

To all whom it may concern:

Be it known that we, TRUMAN B. FUNK and CLARENCE M. EASON, both citizens of the United States, residing at Moline, Rock Island County, Illinois, and at Harrison, Hudson County, New Jersey, respectively, have invented certain new and useful Improvements in Engine Governors, of which the following is a specification.

This governor is intended primarily for use as a gas engine governor on tractors and is peculiarly fitted to conform to the requirements of that use, although it is not the intention that the invention be limited to the use stated.-

The object and purpose of this invention is to construct a governor which will automatically regulate the speed of an engine regardless of the change in load. The present governor is so designed that it may be adjusted by the operator from his seat to govern the engine over a wide range of low speeds, so that flexibility of control is afforded and substantially constant speed ratios maintained within the selected range.

Further objects and uses of the invention will appear from a detailed description of the same which consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings:

Figure 1 is a sectional elevation of the governor with the casing cut away;

Fig. 2 is a side elevation of the exterior of the casing;

Fig. 3 1s a top or plan view with the cap removed; and

Fig. 4 is an exterior elevation at right angles to that of Fig. 2.

The governor is housed within a cupshaped casing 5 closed by a cap 6 and provided with a base 7 from which depends a tubular sleeve 8. The housing is mounted on some convenient portion of the engine casing and serves as an enclosure within which the working ortions of the governor are housed.

Journ'aled within the sleeve 8 is a verti-" a plurality of holes 28 for Specification of Letters Patent. Patentqgdl 1W 2]} 11922 1920. Serial no. 400,399.

end with an inwardly extending finger 14 which pro ects into a slot' 15 in the bifurcated head 16 of a post 17 which is slidably mounted w1th1n the bore in the center of the tubular shaft 9 and rests upon the coiled spring 18 the arrangement belng such that, as the weights fly out through the effect of centr1fugal action, the inwardly projecting fingers 14 bearing upon the post 17 will cause the latter to be depressed against the tension of the spring.

The supper end of the slotted head 16 has fixedly mounted thereon a collar 16 within which the head rotates, which collar is provided on each side with a trunnion 19, the two trunnlons furnishing pivotal bearings for a pivot yoke 20 preferably formed of two sections of metal plate bowed to embrace the trunnion head, the sections having' their ends united to provide ears 21 and I that the'two bent arms will turn in the same axial line.

The bent arm 23 has clamped thereon a lever arm 27 provided at its upper end with permitting variable adjustments. The protruding end of the bent arm 24 has clamped thereto a control lever 29 whose range of movement can be regulated by means of a pair of adjusting screws 30 entered through lugs 31 on the exterior of the housing and adapted to be held in adjusted position by lock nuts 32.

Rotary motion is imparted to the shaft 9 and governor carried thereby by means of a pinion 33 or the like keyed or otherwise secured upon the lower end of the bore shaft 9. This pinion may be put in train with any appropriate rotating portion of the engine.

In use the employment of the two levers 27 and 29 will ensure a range of adjustments and a flexibility of control such that the governor will operate within varying speed limits in a manner now to be described. By moving the lever 27 to the right in Fig. 3, the bent arm 23 will be rocked downwardly. This movement will depress the corresponding end of the yoke 20, thereby swinging the yoke upon the arm 24 as a fixed pivot, and serving to depress the spring supported post 16 by an amount equal to one-half the move- 20 movement to be imparted to the control arm,

ment of the depressed end-of the yoke. This depression of the post lowers the same away from contact with the inturned fingers 14 of the governor weig ts, so that with theadjustment indicate the speed of the engine must be increased to a predetermined degree before the governor weights will rise to such position as to again bring the fingers 14 in contact with the post. This adjustment permits the engine to acquire a predetermined speed before the governing action of the weights begins to operate. Thereafter an increase of speed will have the effect of cansing a further depression of the spring operated post; and with the arm 27 in locked relation and the control arm 29 free to move, the action of the weights will, of necessity, be centered upon the movable control arm, so that a continued drawing down of the yoke will cause a greater or less degree of thereby operating the throttle to cut down the gas supply to a degree commensurate with the governing movement, with the result that the throttle action will be maintained in a state of equilibrium depending upon the action of the governor weights.

The co-action between the adjusting lever 27 and the control lever 29 is such that the adjusting lever can be moved to any desired position, or can be permitted to remain in normal position, as shown inthe drawings, and this movement of the adjusting lever serves to determine the range within which the governor action will "be limited. Thus when a slow speed of adjustment is desired,

the spring post can be maintained in its uppermost position and in contact with the governor fingers while the engine is at rest. Thereafter, the initiatory movements of the governor weights will cause a depression of the spring post and a consequent throttling effect within a low speed range. Similarly by moving the adjusting lever to varying po sitions, the range of governing action can be adjusted for higher speeds, so that the present device enables the operator to select the desired speed and adjust the governor to maintain such speed under varying loads due to ground inequalities or other causes.

With the governor in its low speed adjustment, the range of action of the governor weights will be limited to an are within which the weights will depart but a small degree from their normal vertical position,

and the lever arm effective for counteracting the tension of the spring 18 will be relatively lon Thus a relatively slow engine speed will effective to impart to the governor weights a sufiicient divergence from vertical position to depress the spring and effect closing of the throttle.

When the post is depressed to set the governor for operation in a higher speed range, this adjusting movement will effect an ini-.

'tial com ressipn of the spring, and will also retract t e point of contact for the weights, so that'thereafter an initiatory movement of the weights will be necessary to effect operative contact of the weights and the post. Thereafter the effective action of the weights at a higher rotary speed will begin, and the weights, operating within a range of movement more nearly approaching the horizontal, will operate on a shortened lever arm as against increased spring pressure so that a higher speed range will be required to effect a further compression of the spring and a resultant movement of the post such as to effect the closing of the throttle. Similarly for higher speed ranges the spring pressure will be further increased and the lever length further diminished to zero as theweights approach the horizontal position.

We claim:

1. In a governor, the combination of a slidably mounted stem, a rotatable standard arranged laterally of the stem, a weight pivoted to the standard and having a projecting member adapted to engage the stem when the weight is subjected to the action of centrifugal force, a spring bearing against the stem for resisting the action of centrifugal force, single adjusting means for regulating the position of the stem with respect to the contacting member on the weight and concurrently regulating the spring tension, and throttle controlling means adapted to be actuated by the action of the governor weight, substantially as described.

' 2.. In a governor, the combination of a rotating governor weight, a spring supported stem adapted to be contacted and moved by the governor weight when rotated, a yoke pivotally connected to the stem, an adjusting device connected to one end of the yoke for regulating the position of the stem with respect to the governor, and a throttle controlling device connected to the other end of the p1voted yoke, substantially as described.

3. In a governor, the combination of a rotating'governor weight, a stem adapted to be contacted and moved by the governor weight when rotated, a yoke pivotally connected to the steni, an adjusting device connected to one end of the yoke for regulating arms one pivoted to each'end of the pivotal.

member and journaled in opposite relation to one another, an adjusting member connected to oneiof the bent arms for adjusting the position of the stem with relation to the governor weight, and a throttle controlling member connected to the other bent arm for regulating the throttle within the range of governing movements established by the adjusting member, substantially as described.

5. In a governor, the combination of a housing, a shaft rotatably mounted within the housing, a spring pressed stem slidably mounted through the axis of the shaft, a pair of governor weights pivotally carried by the shaft and having their acting ends in co-acting relation with the stem, a member pivotally mounted on the stem. bent arms, one connecting end each of the pivotal member, the bent arm being respectively journaled through the housing on diametrically opposite sides, an adjusting lever connected to the protruding end of one of the bent arms, and a throttle controlling lever connected to the protruding end of the other bent arm, the adjusting lever serving to vary the relation between the stem and the governor weights to establish speed limits within which the governor is effective to control the throttle, substantially as described.

6. In a governor, the combination of a governor weight rotatably mounted and pivoted to permit of a swinging movement under the action of centrifugal force. means under the control of the governor weight for operating the throttle, means for exerting a pressure on said throttle operating means counter to the pressure exerted by the weight when rotated, and a single means for jointly regulating the application of said counter pressure and for allowing the weight to ini tially move through a zone of regulated extent before it assumes a position in which to operate the throttle controlling means, substantially as described.

TRUMAN B. FUNK. CLARENCE M. EASON.

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