US1632471A - Governor for gas engines - Google Patents

Description

heavy strain.

Patented June 14, 1927.

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WILTON A. GlBARDIER AND `13EN.TAMIIW`E.,H IBBARD, OF ST. CLAIR, IVISSOURI.

. GovEn-non Een ens ENGINES.

lApplicatien,'tiled .Tune 3, 1926.` Seria1 No. 113,564.

l rlhis invention relates to governor devices, Vand particularly to governor devices for use `in connection with automobileengines of the explosive type. A

lOne Object ofthe invention is to Provide agovernor which willautomatically accelerate the engine when said"` engine begins to labor under a heavy loadborfwhen ascending a steep grade.

'y Another ob'ect 1s toprovide a4 governor Awhich is adapted togberlset topermitfthe engine'to operatefat a predetermined speed, by automatically regulating' the amount'of fed to the engine, and V'which willautomatically increase the .amount of vgas `fedto the engine, when said engine is subjected to i4\ nother`l object is `to provide a device of this eharacter whichpermits the ordinary hand feeding of gas tothe engine`,`s hould it be desired to travel at a speed greater than 4 th at normally permitted byl the governor. Other objects and advantagesdwill be apparent from thefollowing description when taken inconnection ,with the accompanying drawings. Inthe drawings: t

Figure 1 is atop lplan view of the invention and the associated portions of `theautomobile. L i

Figure 2 is a ,sidevelevationofthe same, certain parts being insection. f

4 yFigure 3 is a vertical transverse sectional -'view on the line 3-3 of Figure 1, looking toward the governor.

Figure 4 is a section onthe lineeL-l of Figure 3.' v Referring particularly to the `accompanying drawing, 1() represents the pulley of the fcooling fan 11, 12 the engine block head securing bolts, 1B `the bolts for securing the radiator outlet pipe 13" to the engine, 14 the I `foot-board of the automobile, l'the gasrod leadingto the steering wheel ofran autoincbile, not shown, andhaving the` radial arm 416, and 17 the link which connects with and `operates t the, throttleof thewengine, all of` vwhich `are associated in connection wit-hthe present invention.`

`Secured tothe engine block, by means of two `of the said lbolts 12, are the arms 18, y

4which carry the tubular member 19#u Rotatably disposed lin the tubulary inember19- 1s ashaft 20, the forward end ofwhich car- 7 l ries a pulley 21, over which the fan `belt 22 vbeforementioned' bolts 13 engages-,while the ,other end ofthe shaft projects beyond the rear end of thefrlem' ber, for a purpose whichwill presently appearuherein. Pivotally mountedon this 'projectingA end of the shaft 20 are the centrifugal Vgovernor 'arms 23, said varms having .the cam portions 24,y which beariagainstthe washer ring 25, disposed on' the shaft in contact' ywith the adjacent end zof th-etubular member 19. Between the forward end of the' member y 19, and thel pulley 21, is coil spring 26 vwhich urges the shaft forwardly,

and swings the governor arms inwardly'toward each other. 'Itwill be noted that the pulley 21 is of ysuiiicient length tol permit movement thereof, withthe shaft where- Vby not vto interfere with the engagement of the, fan belt thereon, vwhen the governor'arms swing outwardly and bear against Athe washer`25 to slide the shaft 20 rearwardly through the tubular member 19. i Fiiedto the rear fend of the member 19 is a downwardly bowedarm 27, and formedvon the rearend of saidfarm isthe `vertical,bearing `28`in which is disposed the vertical rock fshaft 29. Fixed on vthe ripper end of the rock shaft 29V isa radial arm A30 which, lies Qin the pathof theadjacent end of thelshaft ,2QA for movement thereby,when said shaft 2O 4,is moved rearwardly byv the governor Y arms. Fixed: to the'lowerpend of the rock shaft 29 is a radial arm lfhaving "anmelongated opening 32 in its outer end, and a circular l opening 83 inwardly ofl said elongated opening(V Extending laterally from the inter- ...I'nediate portion of thebowed arm 27 is an apertured post 311, anddisposed through the aperture of said post is 'an eye-bolt S5'. Cony nected in the eye of said bolt, at one` end,

and in the opening 33, at its other end, is a 'Y coil spring 36, which normally draws the arm 3l in the directionv of the post 341, whereto engage and maintain theearin() vin contact with theend of the shaft20.v Secured to the engine by means of one of the v is anf angle bracket 37, and pivotally supported on 'this ,bracket is a bell crank lever 38. Pivotally connected to one arm of this bell crank leverV is oneend of the throttlelink 17,` whiley a, link 39 is pivotally connected to theve'nd of. theother arm of the crank 38. A' spring. 410 is also connected to this last-named arinlof the crank, and to the foot-board 1`l,`of the automobile, 1said springserving to resiliently and yieldably maintain the bell crank in a predetermined position. Connected to the outer end of the first-named arm of the bell crank lever 38, and to the radial arm 16 of the gas rod 15, is a section of chain 41, which is adapted to roel; the bell crank when the gas rod 15 is rocked, in the ordinary hand feeding of gas, but which is inactive when the device operates in a manner to be later described hereinafter. The other end of the link 39 is flattened and provided with a longitudinal series of openings 42, said end being slidably disposed in the elongated opening 32 of the arm 31. Secured in one of the openings 42, at the spring side of the arm 31, is a pin 43, which is adapted to be engaged by said arm, whereby to exert a pulling force on the link, under the influence of the said spring 36. Pivotally mounted on the foot-board 14 is a bell crank leverv44, one arm of which carries a pedal button 45, disposed above the said board, fer depression by the foot of the driver of the automobile. Connected to the other arm of the crank 44, at one of its ends, and to the arm 31, at its other end, is a wire 4G, which is adapted to swing the arm rearwardly against the tension of the spring 36, where- 'by to rock the shaft 29 and move the other arm 30 away from the end of the shaft 2U, and permit the spring 40 to rock the bell crank 38. The tension of the spring 3G is regulated by means of a winged nut 35', on the bolt 35, which bears against the said post 34.

When the engine is at rest the parts are in the positions shown in Figures l and 2. The engine is started, and the gas fed by the use of the usual hand throttle arm or lever on the steering wheel of the automobile. The engine is then permitted to `run at its maximum speed, which has been previously determined, and for which speed the parts of the mechanism have been properly adjusted. Under normal conditions the spring 36 draws the arm 31 forwardly sothat it bears against the pin 43, thereby pulling on the link 39 to rock the bell crank lever 33,

to partially open the throttle. The spring 40 normally tends to urge the bell crank so that the link 17 will move the throttle toward closed position, but the greater strength of the spring 36 counteracts this so that the crank 38 is rocked to cause the throttle to be opened. As the engine increases in speed the governor arms will swing away from each other whereby to urge the shaft 2O against the arm 30, with the result that the arm 31 will be swung outwardly against the tension Vof the spring 36. As the arm 31 moves outwardly the pressure against the pin 43 is relieved, whereupon the spring 40 exerts its force to rock the bell crank 38, and cause the partial closing of the throttle. This, then, causes the engine to slow down to its normal predetermined speed. When the engine slows down, as when climbing a steep grade, or upon application of a heavy load, the governor arms will move toward each other, thus permitting the spring 36 to pull on the arm 31, so that it will engage the pin 43, and roclr the bell crank 38 so that the throttle will be opened to a greater eX- tent. Thus the engine is given more gas, when under strain of a load, without attention of the driver. rlhe automobile is thus automatically controlled, with respect to its speed, and a constant speed maintained under varying conditions.

By adjusting the nut 35 the tension of the spring 36 may be varied, and hence the strength of action of the arm 31 with relation to the'bell crank lever 38, can be regulated, whereby to permit the throttle valve to be held in open position, to different degrees. Also, by placing the pin 43' ina different opening 42, the maximum speed may be increased or diminished, according to the desires of the driver. mally slack during the operation of the device.

l/Vhat is claimed is:

1. An automatic speed regulator for an explosive engine including a governor actuate'd shaft, gas feeding means including a throttle opening and closing lever, spring means normally urging the lever toward throttle closed position, spring urged means normally rengaged with the shaft and operatively connected with the lever for holding the latter in its throttle opened position and arranged to be moved by said shaft, and means for moving said spring urged means away from the shaft whereby to permit the closing lever to be moved toward throttle closed position by said spring means.

2. An automatic speed regulator for an explosive engine including a` governor actuated shaft, means normally held engaged with the shaft and adapted' to be moved thereby, gas feeding means including a throttle and the opening and closing leve-r connected therewith, spring means tending to nieve the lever into its throttle closed position, connections between the shaft engaging means and the lever for holding the lever in its throttle opened position and against. the action of the spring means, and means for moving the shaft engaged means away from the shaft, whereby to permit the closing spring means to act upon said lever to close the throttle.l

3. An automatic speed regulator for explosive engines including al governor actuated shaft, gas feeding means including a throttle and the opening and closing lever connected therewith, an arm movable in one direction by said shaft, spring means for retaining vthe arm in engagement with the shaft, a link connected with said lever and freely slidable through said arm in one direc- The chain 41 is nor- Y tion, means on the link and engaged by the shaft whereby to permit the level1 co close arm for maintaining the link against movethe throttle. 1

ment through the arm in the opposite diree- In testimony whereof, We aliX oui1 signa- 10 tion, spring means operable to move the tures. levell toward its throttle closing position when the arm is moved by said shaft, andV i vWILTON A. GIRARDIER. means for moving,` the arm away from the BENJAMIN B. HIBBARD.

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