US1841386A - Valve - Google Patents

Description

F. F. STARR VALVE Filed March 27, 1924 @HIM/Magd Patented dan. 19, 1932 FRANK r. STARR, or DAYTON, Onto, A ssIGNOn rro :Omoo-LIGHT COMPANY; or DAYTON,v i'

HI0 A OORPORATION oi;1 DELAWARE.

vALvnij l e Apliication mea March 27, 1924'. i Seraing. ma/isi., l

The present invention relates to thecontrol of proportions of fuel mixture for an internal combustion engine, and particularly to a valve adapted to cont-rol the air inletof the f engine carburetor. y

One of the ob] ects of the present invention is to increase the eiliciency of an internal combustion engine by automatically controlling the iuel mixture `thereto in accordance with the temperature of the engine so that a rich mixture is obtained when the engine is cold, and providing mechanism whereby said mixture gradually becomes more lean as the engine becomes heated.

Further objects and advantages of the present invention will be apparent from the following descriptiomreference being had to the accompanying drawings, wherein al preferred form of embodiment of the invention is clearly shown.

In the drawings:

Fig. l is a fragmentary view partly in section of an internal combustion engine with the present invention applied thereto.

Fig. 2 is a: viewl taken on the line 27-2 of Fig. l, showing the position of the elements whenk the engine is heated.

Figs. 3 and 4 are views taken Online 3 3.

of Fig. l, showing tlieposition Vof the elements or the invention when,` the engine yis 2l, a cylinder 22, and a cylinder head 23.V The admission of fuel from the cylinder headYA 23 to the cylinder 22 is controlledby an intake valve 25. The crank case 2linerges in t oV a tube 26 which carries Va tube 2'? ltvhichiny turn is connected with carburetor or min` ing valve 28. Carburetor 28 is connected .with the cylinder head 23 by bolts Ai r for combustion purposes is withdrawn by:v

suction of the engine from the 'engine crank case 2l through the tubes 23 and 27;' into `the carburetor 28. Fuel for the carburetor 28 enters through an orifice 3l suitably cori` nected with a fuel supply not shown.

- The carburetor 28 includes a body portionV portion 32ha'vingra passage Thelmouthi 34'I ofjpass'age 33-fwhichjconstitutes a stationary valvejseat and 'isfforined in'fthe'loWer fp'ortionof the body `32 is in communication withtube27 A valve for controlling the mouth V34 `comprisesaa plate 36 having an upper portion of thebody 32 andisprovided with ahandle '39. Movement of V4the' handle k39g will 'cause 'anincr/ease or decrease Vof yflolfwj of air in' the passage 33.,

f A temperature responsi e device 40 ris car- Vried underneath thevalve plate 36 and isse f cured to the stem 38. The, device 40 includes arcuateslotor port l37. V Plate 36 isrotated by va: stern 38 which extends through the a Spirallyiarranged'bigmetallic Strip 41 hrw.'y ,Y

ing itsinner endsecured bya screw'42 toa nut 43 which turn is secured to the stem 38 by lock nut 44..' The, outer end of strip 41 carries a plate 45 located; adjacent 'the plate 36'. The'stripf41 is attached in such a posi# i tion with respect to theport 37 that when.;

the engine is. cold the plate45 will cover 'av and.4.fH i The operation of thev device islas follows:

fof-the slot'37dasjis shownin Figsp T O start'the'y engine, thehandle 39-is rotated v Y tothe position s howminQFig. 3 whereupon theplate 36 will cover mouth 34 in body32 L f Vto cutfotl' v substantially all o the air to 'the carburetor whereby a `rich mixture'of vfuel is drawninto thegengine. After theengine becomes self-Operative, the handle 39 isV ro,-v tated tothe position shown in Fig. 4.'. A`

portion dport-.37 inplate36V will'theii register with af'portion of the mouth 34 in body 324 andA the 'thermo'statioally actuated platev4 l ywill-` occupy substantially the position showin `ij-in Fig. 4. VAfter the enginebeconies y "heated,fby`heat conducted to body 32 `from the `cylinder heat, 'the lb'i-infetal strip^4lwill be heated causingthe plate45'to rotate clock- Y wiseasviewed in Figs'.2 and 4, thereby fiirl ther uncovering the slot" 37, as shown in Fig. 2, to permit'more airf to pass therethrough.

`Inthis' manner the fuelmixture becomes i more lean asthe engine'becomes heated. Y

yWith the .present invention, the internal f i combustion engine isreadilylstarted and after 'the enginewhavs oncebe'enstarted it is not nec- 2.V 'i '1,841,38e

mined eiiicient running position (Fig. 4C) the fuel mixture being regulatedautomatically bythe temperature of vthe engine. t

Y The entire fuel control system: including the carburetor and the thermostatic deviceY 40 comprises a Unit which can be assembled or detached from the engine for the ready adjustment or repair thereof. It is merely necessary to remove the bolts ,29 whereupon the unit may then betaken off.

While Vthe form of embodiment of theV pres-V ent invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming Within the scope of the claims Which follow. Y Y

What I claim is as follows: Y

l. An internal combustion engine having` a piston cylinder and -a crankcase, an air passage from said orankcase to said piston cylinder, a carburetor in said passage in ther-V mal contact with said engine, said carburetor beingprovided vvith an air intake in said passage, a valve for said air intake comprising a stationary valve seat member having a port,

a movable valve member cooperating with the port in the valve seat` member, means Vfor moving said movable valve member, a seo- A cond valve `member movable With said first vmovable valve member for closing the port in the first movable valve member, and temperature responsive means bodily carried by said first movable valve member for moving the second valve member. Y

2. An internal combustion engine having a piston cylinder and a crankcase, an air passage from said crankcase to -said piston cylinder, a carburetor in said passage inthermal contact With saidv engine, said cars. buretor being provided With an air intake in said passage, a valve for said air intake including a movablefvalve member, manually operated means for vcontrolling said valveV member for varying the `fuelY mixture proportions, a second valve member movable with said first named valve member for vary- Yingsaid proportions, andtemperature responsive means bodily -movable- Withsaid manualrvmeans and operativelyrconnected with said. second valve` member.

In testimony whereof I hereto' afiix my sig- I nature. l Y n Y vFRANK F. STARR.

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