US1642461A - Vacuum tank - Google Patents

Description

Sept. 13, 1927. 1,642,461 l H. RABEZZANA VACUUM TANK Filed Jan. 4. 1926 Y F1 E lr 5 Y 25 the manifold ,and with'theoutlet from 30,1; ,Another ,Objectis the Apositive and Simul- I ""taneons operation of the two valves, the suc-'Q tininletvalveandlthelgasolene outlet valve,"v

I Y 'el)sgeway's 20 which affords ,communicationat timesbetween the chamber 1 and the 4Q`aeoompanying drawing and-'herein .described Patented Sept. 13, 1927, f,..-

fPAT-ENr cruce.,

i moron RABEZZANA, or prima?. ivricrrrsnmassrenon ro-A c SPARK PLUG coMrANY, Y or FLINT, MIGHrGAN. Y

v Y 'vacUUivr'mANK. u

.application sled January 1926. seal Nog 79,103.

l'This invention relates to `an improved'arrangement for vacuum tanks. In common rkWith othersuch tanks Aas v.usedjin connection,

Withinternal combustion engines, my inven- 6. tion usesfsuction to draw fuel from a main .reservoir to` a tank from which it is discharged by gravity to thecarburetor. VThe y. tank 'is'comprised of a valve chamber and' a storage chamber. The valve arrangement is controlledfby a tloatsuch that when the'float islowthe outletV from kthe valve chamber to vthe Istorage chamber' is closed, and suction 1s'- then applied fromtlie Aintake manifold 'to theV valve chamber so as to draw fuelfrom the .15 main reservoir to thefvalvechamber. 'As the valvechamber fills the valve, by a snapv action,'V closes the manifold connection, opensv an air vent, and allows the collected fuel to` f ,'owto the storage chamber through avalve.

l Lsimulta'neously opening thereinto from the l c One `object'of my invention isto use porce- `lain/for the-Valvesea-ts and the valves both "at the `connection with the pipe leading lto f;, ;v'a1v'e chamber to the storagefcharnber;

` effective jmeanslfor lapplying the movement of the float to thefactuation'of the valves.

. by means connecting 'the same.

' .Alstill further object1 is theproyision ofi oscilla tory ,valves `and a connecting` stem i `Figure 1. Figure' 3 isa section similar tov Figure 1, parts however beingbroken away, .showing the operativemechanism, in a vdif- `r: ferentr position. rFigure Lis a horizontal section on line Figure 1. fFigur-e 5 is asimilar section on line 5.-5Figure 1. Figure 6 is a detaily of the lower valvel as, seen from line -Figure l; f Referring for' ac'omplete description to .the drawinganumeral 1 represents a tank having,

F' urefl is: a vertical 'section' through af an upper part 2`fand a lower part 3, each `rcylindrical in form and the two united kby the overlapping portion Vet to make the complete tank. f Centrallyfdisposed at the Tend ofthe upper section is a recess 5, and extending above the recess Yis an opening 6. This" extended end of the upper member; is threaded as at 7 for the attachment thereto of' a conduit leading to the intake manifold of the motor. In the shoulder -at the recess is lshown avent at'8. At oneside of therec'essy is an opening 9` overV which is securedk a rthreadedconnection'10'bv means of rivets 11, this vconnection .serving for attachment of the pipeleading from the main gasolene tank.

vOne'offthe/ rivets 11 ismadeuse of to secure a baflie l12 'which extends under the opening 9 and diverts'th'e fuell entering'through the connection '10 from falling'upon the float.

At. the lower end ofthe cylindrical member 3 1s a recess- 13. This ,recess terminates in a reduced-'extension 111 having a threaded connection with vthe storage chamber 15.

VVithinthe recessy 5 is av porcelain valve seat-,116. VIhis'valve seat has a passageway '17'extendingtherethrough and communicat- A further ob'ect consists Ain a simple yet' `manifold; Theporcelain valve seat has a "f second openingjl which registers with the 'gv'entS described above.' Located within the Vsecond mentioned yrecess, 18 is a porcelain y ingwith the opening 6, and with the intake valve seatv 19AV extending through which are Tunieralv represents a porcelain valve mounted for 'oscillationl adjacent the lower T face -of the lporcelainV valve seat 16. It has a passage 21 extending therethrough which at timesis madeto register with passageway 3117 of the valve seat. It also has al passageway "2.2 extending `'therethrough `which at times lregisters-with `passageway .18 of the valve seat. Numeral Qis used .to designate. a sec- 'ondiporcelain valve mounted for oscillation on the valve seat 19 at the lower end of theV chamber. This valve 23 having passages 24: which register at times with passage 20 for permitting the gasolene and chamber 1v to vflow intoreservoir 15. lFor the purpose of simultaneously oscillating the two valves 2O and 231 make use ofthe following arrangement. A stem 24 isljournalled for voscillatory movement in central openings Qineach of the valve seats.y

This stem passes through central openings in the valves. Valve i2() is tixably secured tothe stem by pin as shown at 2G. Near the upper end ot the stem Qelare radial arms 27 which are bent back aud have legs 28 extending therefrom in a direct-ion parallel to stem d and enter apertures Q9 in the valve 20. A somewhat similar arrangement is sliown at the lower end ot the stem where there' are radial arms 30 and legs Sl entering the apertures BQ in the valve Q3. Surrounding the stem between the valve Q3 and the radial arms 30 is seen a coil spring This coil spring functions to hold the valve 23 against its seat 19 and also to hold valve 2O against its seat lil. Extending transversely across the upper part ot the chamber one on each side ot' the stem 24: are two pivot rods 34. Pivoted ou each ot these rods are elbow levers These levers are arranged side by side in opposed relation, as will be readily seen from examination of Figure l or Figure The upper ends oit the levers en gage the opposite radial arms Q7. The other arms oi. the levers are connected b v flat springs 8G with projections 37 extending divergently upward lrom a float 3S, which tloat. as will be seen, is arranged to reciprocate in the valve chamber l and to be guided along the stem 24;. Convenient means must be Provided to limit the movements ot the levers 35 in each of two directions. This may be done in other ways but a convenient way is shown. consisting in providing each lever with a slot 39 engaging over the pivot rod Si of the other lever. The position of parts 3T, 36 and 3st is such that the point o'l' connection oil the yielding member 86 `with the iioat projection 37 moves through a plane defined by the transverse pivot 34 oi a lever and the point o't'connection between that lever and the spring arms 36.

It is believed that the ope 1ation of the device will be understood without extended explanation. In Figure l. the parts are represented liaving the position wherein the lloat low in the tank and the passageway to the manifold is open. Under these circumstances, the engine being running, suction ot the manifold withdraws air from tank l and admits fuel through opening 10. Under these circumstances it will be noticed `that the opening at the bottom oi the tank is closed. As the tloat rises. the inner ends ot yielding members 3G tend to rise but because oi the engagement oit the slots with the abutments the levers cannot swing and the spring becomes bowed. Then however, the outer ends oir' spring members 3G reach a point above a plane determined by the lever pivots Si and the connections of the levers with the arms 36 the spring straightens out. oscillates stem Q4 and the connected valves whereupon the suction intake is closed, the air vent is opened and the fuel outlet to the reservoir l5 is also opened. As the 'fuel flows out into reservoir 15 the float ialls the spring members 36 become bowed until their extremities pass the plane above indicated. whereupon the valve position is reversed. This process eoutii'mes during the operation ot the engine.

A further advantage consists in the use oi porcelain for the valve and valve seats. It has been tound that the porcelain, when wet, makes an excellent seal.

I claim:

l. In a` iloat chamber having an opening therein, a tloat, a itluid outlet, valves controh ling said opening and outlet, means connect ing said valves, means connecting said float to said connecting means whereby said valves are oscillated upon the reciprocation of the iioat. y

2. In a tloat chamber, a tloat, a suction opening, a fluid outlet, valves :for said opening and outlet, means connecting said valves tor simultaneous oscillation, yielding means connecting said float and said connecting` means to oseillate the valves.

3. In a vacuum tank having an opening containing a valve seat, an oscillating valve therefor, a lever, means connecting one lever arm with the valve at one side of its center of oscillation` a reciprocating float, yielding means connecting the other lever arm with the float, the parts being so positioned and proportioned that the yielding means acts with a` snap action.

4. In a vacuum tank having an opening, an oscillating valve therefor, a reciprocating float, opposed levers, the pivot of each lever limiting a movement of the other lever, yielding means connecting `an arm of each lever with the float, means connecting the opposite lever arms with the oscillating valve at opposite sides of the center of oscillation.

5. In a vacuum tank having an opening, an oscillating valve therefor, a reciprocating member, a lever within the tank having a fixed pivot transversely positioned. means to limit the swinging of the lever. means connecting the lever to the oscillating valve to oscillate the latter, yielding means connecting the opposite arm of the lever to the re* ciprocating member, the construction being such that the point of attachment of the yielding means and the reciprocating menr ber crosses the plane defined by the transverse pivot and the point of connection of the yielding means and lever to thereby swing the lever and oscillate the valve.

G. The combination recited in claim 5 together with an oppositiely positioned oscillating valve to control a fluid outlet, means connecting the two valves for simultaneous oscillation.

7. A combination as set forth in claim 5, together with an oppositely positioned oscillating valve, means connecting the two 9. The combination as set forth in claim 8 wherein the valves lare oppositely opened and closed and wherein the closure of one.

valve is associated with a simultaneous air vent therethrough.

10.A In a ioat chamber having an opening at opposite ends, a valve seat at each opening, a rod extending through the chamber and journalled for oscillation in the valve seats, valves on the rod mounted -to oscillate therewith, there being openings in the seats and valves in position for registration in predetermined valve positions.

11. A combination as Vset forth in claim 10 together witha float, means connecting the fioat and oscillating rod to ett'ect a snapV oscillation of ythe rod andvalves upon the oscillation of the floatk to predetermined positions.

k k12. In a float chamber vhaving opposite openings, a valve seat in each opening, an oscillating valve adjacent each vvalve seat, each valve and seat constructed with passages for registration, rod means connecting the said valves, spring means inl abut-ment with said rod and one of said valves to seat both valves irmly against their seats.

13. In a float chamber, a reciprocating float, a longitudinal extending valve oscillating rod along which the float reciprocates, means connecting the floatand rod to oscillate the latter in opposite directions as the float reaches opposite extremities of its reoiproca'tion.

14;; In a vacuum tank having an opening, an oscillating valve therefor, two pivot rods, opposed levers one pivoted on each rod and each rod limiting the movementof the opposite lever, means connecting the levers to the valve on the opposite sides of its center of oscillation, yielding means connecting the `other arms of the levers to the float, the construction being such that the point of attachment of the yielding means to the float pass i through the plane defined by the pivots of the levers and the point of attachment of the yielding means thereto to insure a snap opening and closing action of the valve.

. In testimony whereof I aiix my signature.

HECTOR RABEZZANA.V

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