US1360027A - System for feeding by means of a vacuum - Google Patents

Description

E A. ROCKWELL.

SYSTLM FOR FEEDING BY MEANS OF AVVACUUM.

APPLICATION HLED JUNE 4, 1919.

Famed ov. 23, 1920;

3 SHEETS-SHEET1.

E. A. ROCKWELL. SYSTEM 'FOR FEEDING BY MEANS OF A VACUUM.

APPLICATION FILED JUNE 4, 1919. v 1 360 132?, Patanfed Nov. 23, 192%.

3 SHEETS-SHEET 2.

E. A. ROCKWELL SYSTEM FOR FQEDING BY MEANS OF A VACUUM" APPUCATION FILED mum, 291 9.

Patentefi NGVQ 23, 11.92%.

3 SHEETS-SHEET 3- J ,ATO NYS entree srarss earner caries.

EDWARD A. ROCKWELL. OF NEW YORK, 1v. 1., ASSIGNOR TO E. A. Room/rum; COMPANY. mo, OF NEW YORK. N. Y., A. CORPORATION or NEWYORK.

SYSTEM FOR FEEDING BY MEANS 03? A VACUUM.

Application filed June 4, 1919.

I! '0 all to hem it may conwrn Be it known that-fl. linen-um ltocn- WELL, a citizen of the l'nited States. residing at New York City. in the county of New York and State of Xew York. have invented a certain new and useful Improvement in Systems for Feeding by Means of a Vacuum,

Another object of my invention is to provide a feeding system of this character which is so constructed that a large volume of fuel may be fed. Again the object of my invention is to provide an apparatus in whicl'l thcre is a vacuum tank or chamber adapted to be supplied with fuel by means of the vacuum oi the internal combustion engine with which it is connected. said yacuum tank being arranged to discharge .very rapidly into an auxiliary supply tank or chamber through an opening normally closed by a valve which may be readily unseatcd by means of a relatively small force exerted thereon. Another object oi my invention is to provide a simple construction of this character which maybe manufacturedat a minimum cost. Still another ob ject of my invention is to provide an apparatus in which the degree of vacuum applied is maintained substantially constant irrespective ot diti'ercnt' engine speeds and ditierent degrees of vacuum applied by the engine at difi'erent times. so as to obtain thus a uniformity in operation of the apparatus,

and increase the volume of fuel which may be carried by the vacuum tank owing to the small size of the operating float contained therein. -The object oi my invention is, furthermore. to in this way provide a feed ing system which has sutlicient capacity and speed oi operation to supply engines of large. horse ower. as for example engines used for driving heavy motor vehicles.

Further objects of my invention will appear from the detailed description thereof contained hereinafter.

While my invention is capable oi embodiment in many different forms, for the. purpose oi illustration I shall show only one Specification o'fLetters Patent.

means of screws (5.

Patented Nov. 23, 192%.

Serial no. 301,827.

form of my invention in the accompanying drawings, in which;

Figure l is a vertical section of an apparatus made in accordance with my invention.

Fig. 2 is a plan view partly in section: of the vacuum chamber of an auxiliarysupply tank. I

Fig. 3 is a vertical section showing the cover for the vent pipe, and

Figs. 4. 5 and 6 are diagrammatic views showing the different positions of the parts.

' in the operation of the apparatus.

In. the drawings. I have shown a vacuum tank or chamber 1, which maybe connected by means of a pipe. 2 to a mainsupply tank for fuel, such as gasolene, and which may be connected also by a. pipe 3-3, having a small 'port 3 to the intake manifold of an internal combustion engine, such'for example as an automobile engine. The discharge end of the pipe. 2 may be screw threaded in a sleeve 3* which may have a groove 33" to receive a. ring 3" \vhich'may hold in place. a screen 53", so as to prevent the entry of dirt.into the apparatus. At the top oi the chamber 1. there is, furtlicrmore, provided an automatic means tor vacuum re. lease. preferably comprising valve casing it" which carries therein a vacuum release valve 3 shown as pressed upwardly against its seat by a spring '3 supported by a cross pin 3 into the valve casing 23. The. lower tree edge, oi the chamber 1 may have a. shoul dcred flange 4 which fits over the top or separating plate-oi an auxiliary supply tank orchamber 5, and may be secured thereto by Said auxiliary supply tank 5 may have a bottom closure 7 which may be connected by a pipe 8 to the carbureter oi the internal combustion engine abovereferred to. A. vent pipe 9 may extend u 'iv'ardly from the top of the. tank 5 through the chamber 1, and out through the top oi the'lattcr through a socket 10. The exterior of the socket 10 may he screwthreaded to receive. a hexagonal cover 11 which maintains a packing 12 around the upper end of the vent pipe 9, and whic at intervals around thev cap 1.3 through which air may pass. In the interior of the A. cover 3 prevents the entry of dirt tank or chamber 1 there may be a bracket 15 which may be secured to the vent pipe 9 for guiding a rod 15 which projects upwardly from small upper float-17, made of any desired material, but preferably balsa wood. Below the float 1! there is shown rigidly connected a still smaller fipat 18 also made or" any desired material, but preferably of balsa Wood, the purpose of which is -rfierely, by a buoying action, to balance the weight of the upperlloat, said lower float being nearly alwayssuhmerged. In this way, although until the level of the liquid reaches the float 1? there will he no tendency for the float 17 to be elevated, nevertheless when said float 17 is reached by the level of the liquid it will be given a sudden strong liftingeffort so as to move the parts attached thereto positively and quickly. The rod 16 may be extended below the huoying float 18 where it may he pivoted to a lever 19. This lever 19 may have at its other end a link 20 which may connect it to an arm 21 attached to one side of a valve closure adapted to fit against the underside of a valve seat 23 carried in an opening in the top oi the tank 5. in the preferred form of float-operated valve adapted for use in the present organization, lever 19 may have at one side a projcction 24- to contact with a projection 25011 the link 20, so as to prevent lateral displacement of the valve 22 when it is being seated. In the initial opening movement of the valve 22 the lever 19 rotates in this construction shown upon a pivot 25* by means or which the lever 19 is connected by a lever 25 to a pivot 25 on the top of the tank Afterward, lnawever the openniovernent ol' the valve 22 is completed rotation oi the lever around the hy the p vot 25. The valve 22 in closing is moved by the lever 13) on the pivot 25 as'a fulcrmn. At tho lop of the lever 2:) there may he stop 25 which limits the movement thereof relative to the lever 19, and at the bottom oi" the lever 25 there may be a stop 25 between which and the top of the tank 5 there is normally a slight clearance to permit the valve 2 to be closedjightly by the vacuum applied to the top thereof. but this clca ancc is removed at the beginning of the opening movement of the valve 22 when the liquid begins to rise in the tank 5. he chamber 1 and the tank 5 may he supported by means of a bracket 2'5 sur rounding the lower portion of the tank which bracket may have an upwardly to he secured by screws 28 to the dash hoard or any other part of an automobile. l 'l eltlred or ctherwise secured to the top of the tongue 27 there may be a metal strap 29 having at one end the cot a hook 30 for engagement with a yolte Bl. connected by a square ring-'32 to a loop on the other end of the strap 29 In the operation of my invention, a supply of fuel, such as gasolene, having been supply tank 5, as for example at the lower I rear portion of an automobile and the engine having been started so as to intermittently form a vacuum in the vacuum chamher 1 through the port 3, the fuel will be drawn from the main supply tank by means of the pipe 2, and discharged into the vacuum chamber 1, as shown in Fig. 4:,- which indicates the position of the parts when the valve 22 is closed. Inasmuch as the valve 22 is retained closed by the vacuum which is in the vacuum chamber 1, as well as the weight of the float 17, the liquid fuel will accumulate in the chamber 1 until the liquid level rises above the float 18, and finally reaches the float 17 whereupon a sudden lifting effort of considerable strength will be applied to the rod lowhich will first cause the stop 25. to contact with the top of the tank 5, and then depress the side of the valve 22 to which the arm 21 is attached. This will unseat the valve 22, as shown in Fig. 5,, although the valve 22 is of such large area that the buoyancy of a float in the chamber 1 would not be sullicient to open the valve 22 against the force of the Vacuum. holding the same closed if the link 20 were connected to the center of the valve. In this 'ay, a powerful leverage acts by incanso'f the lever 19 to initially open the valve 22. Once that the vznve 22 is unseated in this manner, the vacuum will be broken and the lever 19 will then change its center of rotation from the pivot 25 to the pivot 25 so as to entirely open the valve 22, and permit the quick disc-hal e of a large vol- 5 nine of liquid from the chamber 1 into the tank 5. The opening of the valve 22 is completed by the force of gravity moving the valve int'o position shown in Fig. 6. ln this ay, a constant supply of fuel will he 119 provided in the auxiliary tank 5, and the fuel will .tlo'w therefrom into the carburetor. whence the mixed air and gasolcne will he supplied to the internal combustion en gins. ln the closing movement of the valve 115 22, it will he understood that the lever 19 will rotate upon the pivot 25 until the valve 22 is closed, the valve being closed very quickly because 01" the long leverage with which it is operated. ll henever the 120 valve 22 is closed, there will he a vacuum again developed in the tank 1. but this vacuum will be of a comparatively uniform character because of the fact that at ever suction stroke of the engine piston; the vac 'uum release valve 3 will open to an extent proportionate to the degree of vacuum appl ed hy tneqengine. presence or" this valvel therefore, also decreases the vacuuni which applied to the upper side of the.

valve and consequendy renders i; poc- Sihlo to open said valve viiih a smaller lifting ellor oi the final ihan would otherwise he the case. For this reason, the iloak fl? and as a ri'inserpience the iioai; iii are both made smaller than would otherwise be p ihle. and smaller than would unseat lhe ialvc22 tile valve is 'vrere absent. The capacity of ihenmh is, tlieiefre, mrrespondinglv greater. and this as Well as the valve constrmrlidn which permits a rapid Feed of the oci pdlllilif f the use oi my feeding system 1 connection \viih high powered engine i B constructing the aplo paratus in 'l'llir manner, :furili nmore vacuum feed will he just a cil'eci'ive when ihero is a very lHX vacuum prodnced b she engine as when ihcre is a normal vacuum or a high vacuum produced, The uniform o ralion oi l'he valve 22 i uri'heniore, insured lrv the presence o'l' ihe screen 3 which prevenls the entry of particles of dirt into the apparatus. The tank is at all limes vented lo the outer air through the 25 vent pipe 5). llhenever ii is aesired to repair the apparatus in readil he r moved hv di aging the. yoke,

1 .i W A 1 ,1 (ll lrom llii hooli l 1g :ae onus of 1 and ineciing "Elie roni the rhauilierl in.

w described wish it io ma he lrom lhe spirit i. in combinalion a vacuun' chamber, auxiliary Suppl tank, a valve providing commui'iica ion between the same. means for operating lhe valve c1'1ni .11' -,.ng a float; an noi'her iloai for balancing ihe \veighl oi 'i'he lirsi, inenlioned lioai.

in conihimsiioii a v1 cuum chamhr" t auviliary supplv tank. 1 valve provii'iir conmninicalion heiiveen i 1e same means operaiing the valve comprising a iloai; and another iloal 'lor haluncinglhe ivcigh L oi' the iirst, meniiioned lloai, said ill'f l' meniioned fl at being locuied a considerable disl'ance above 'lhe oiher iloai'.

3. ln comhinalion a'vacuuin chamber. an auxiliary supply 'ianli. a valve providing communicaiion bcl'ivecn lhc same. means for operating 'ihe valve comprising :1 Noah a lover connecting (he lioal lo ihe valve. and linkage i'or shilling ihe pivot of 'lhe lever lo provido increased leverage ar lhe beginning oi the opening movement; oi the valve in combination a vacuum c hamboix an auxiliary supply tank, a valve providing communicaiion between The same. means for operating the, valve comprising a float, a lever connecting the float lo the valve and. linkage for shifting the pivot of the lever to provide increased leverage at the beginning ond meniioned lever to limit the movement.

ol' (he mentioned lover.

(S. in combination a vacuum chamber, an auxiliary supply tank, a valve providing connnunication between thesame, means for operating the valve comprising a float, a lever and link connecting the float to the valve and linkage for shifting the pivot 0f the lever to provide increased leverage at the beginning of the opening movement of the valve.

T. in combination a vacuum chamber, an auxiliary supply tank, a vali'e providing eoninninica'lion between the same, means for op rating the valve comprising a float, alever and link connecting the floatto the valve. and linkage for shifting the pivot of the lever to provide increased leverage at the beginning oi? the opening movement of the Vial VG comprising a lever pivotallv sup por ing said lirst mentioned"lever.

7 i eornliinalion a vacuum chamber. an auxiliary supply tank, a valve providing commonicalion between the same, means for operating the valvecon'iprising a float, a lever and link connecting the, float to the valve linkage for shifting the pivot of the lever in provide increased leverage at the hegiuning of he opening movement of the valie comprising a lever pivotally support ing said lirsl mentioned level: ann stops on the second mentioned. lever to limit the movement oi the first mentioned level.

9. .ln 'comhinaliona vacuum chamber. an

'uuxiliar supply tank a valve providing communicalion hehvecn the same. means for operating ihe valve comprising a float, a lever and link connecting the lloai lo the valve,'

and linkage for shifting the pivot of the levcr l'o provide increased leverage at the beginning oi the opening movement of the valve. said link being connected to the valve at one side lhereoi'.

ill. in co'i'nhinalion a vacuum chamber. an auxiliary supply tank. a valve providing communication hcivveen the same. means for operating the valve comprising a float, a lever and link connecting the float to the valve. and linkage for shifting the pivot oi?" the lever lo provide increased leverage at i'hcbeginning of the opening movement of the valve. comprising ,a lever pivotally supporting said first mentioned lever, said link being connected to thevalve at one side thereof.

11. In combination a vacuum chamber, an auxiliary supply tank, a valve providing communication between the same, means for operating the valve comprising a float, a lever and link connecting the float to the valve, linkage for shifting the pivot of the lever to provide increased leverage at the beginning of the opening movement of the valve, comprising a lever pivotally supporting" said first mentioned lever, and stops on the second mentioned lever to limit the movement of the first mentioned lever, said link being connected to "che valve at one side thereof.

12. l-n combination a vacuum chamber connecting vvitlra main supply tank, an auxiliary supply tank, a valve providing coinmuuication between the vacuum chamber and the auxiliary supply tank adapted io permit the passage of liquid and gaseous terials, and an automatic vacuum release valve for the vacuum chamber.

13. combination a vacuum chamber connected with main supply tank, an auxiliary supply tank, a valve providing communication between the vacuum chamber and the aux 'ary supply tank adapted to permit the liquid and gaseous materials, and an automatic spring-pressed vacuum. relea. a valve for "the vacuum chamber. 1

l ution a vacuum chamber connected with a main supply ianlr, an auxiliary supply tank, a valve providing com munication between the vacuum chamber and the auxiliary supply tank adapted to permil; the passage of liquid and gaseous materials, means for operating the valve comprising float. and an automatic vacuuii release valve for the vacuum chamber.

15.111 combinarion. a vacuum chamber connected with a main supply tank, an auto iliary supply tank, a valve providing com munication i c vsciunn cha and the auxiliary sup ""y tank adsp 1 permit passage or liquid and gaseous materials, means operating the valve comprising float, an au bomatic springpressed vacuum release val e for the vacuum chamber.- iii. In cembinaion chamber, auxiliary supply tenlr, a. valve providing communication between the su a adapted to permit the passage of: liquid v gaseous materials, means operatinc valve one? comprising a float, and a vacuum release valve for the vacuum chamber, said float being smaller than sufficient to unseat said valve in the absence oi the vacuum release valve.

17. In combination a vacuum chamber, an auxiliary supply tank, a valve providing communication between the same adapt,- ed to permitthe passage of liquid and gaseous materials, means for operating the valve comprising a float, and. a spring pressed vacuum release valve for the vacuum chamber, said float being smaller than suliicient to unseat said valve in the absence of the vacuum release valve.

18. in combination a vacuum chamber connected with a main supply tank, anzf'auxiliary supply tank, a -valve providing com iunication between the vacuum echamber and the auxiliary supply tank, means for operating the valve. and an aromatic vacuum release valve-for the vacuum chamber.

19....ln combination a vacuum chamber connected with a main supply tank, an auxiliary supply Sank, a valve providing communication between the 'acuum chamber and the auxiliary supply tank, means for operating the valve comprising a float, and an automatic vacuum release valve for the vacuum chamber.

20. in combination, a vacuum chamber, an auxiliary supply tank, a valve providing communication between the same, means, comprising a float, for operating said valve, and an additional float. adapted to buoy said vaive-operating float, to facilitate the open" inc; and consequent lion of liquid through, said valve.

21. in combination. a vacuum chamber connected with a main supply tank, an. auxiliary supply tank, 2: valve providing communication between the vacuum chamher and the auxiliary supply tank, means for operating the valve, and an automatic vacuum release for the vacuum chamber.

22. in combination, a vacuum chamber connected with a main supply lack, an auxiliary supply in k. a valve providing comnuinicalion bctivccu the vacuum chamher and the auxiliary supply tank, means for operating the valve comprising a float,

and an automatic vacuum release for said vacuum chamber.

in testimony that. l claim the foregoing,

l have hereunto set my hand ;his 12th day

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