US1446902A - Vacuum feeding device - Google Patents

Description

Feb. 27, 1923.

J. JACOBSEN VACUUM FEEDING DEVlCE Filed May 18, 1921 IIVVENTOR mcoa JAcoBaE/v Patented Feb. 27, 1923.

UNITED JACOB JACOBSEN, OF SAN FRANCISCO, CALIFORNIA...

VACUUM rnnnrne nnvron.

Application filed May 18,

v T all whom it may concern:

Be it known that I, JACOB JAcoBsnN, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Vacuum Feeding Devices, of which the following is a specification.

This invention relates to a vacuum fuel feeding device for internal combustion engines, and especially to a device of this character which is actuated by. the suction produced in the intake manifold of the engine when in operation and which will elevate the gasoline from the main storage tank to an auxiliary tank from which the gasoline willflow by gravity to the bowl of a carburetor. v

One of the objects of the present invention is to generally improve and simplify devices of this character, to provide an automatic valve mechanism, and to ro-vide a float actuated lever mechanism of simple design for operating the valves.

Another object of the invention is to provide a novel cover structure, and means for securing the same without resorting to such devices as exterior bolts, screws, etc.

Further objects will hereinafter appear.

The invention consists of the parts and the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to the accomr l ying d a i g in h.

Fig. 1 is a central vertical section of the vacuum feeding device.

Fig. 2 is a section taken at right angles to Fig. 1. r

Fig. 3 is a perspective View of the Valve actuating lever.

Fig. 4 is an enlarged detail sectional view of the cover showing the securing tube, the venting valve and the. suction valve.

, Fig. 5 is a perspective View of the float.

actuated lever.

Referring to the drawings in detail, A indicates a cylindrical tank orcontainer provided with .a bottom section 2 and a fixed cover section 3, in which is formedan opening 4. Forming a closure for said opening is a removable cover 5, and dividing the interior of the tank A into two compartments, as shown at 6 and 7, is an intermediate bottom section .or partition member 8. This member is horizontally disposed and has an opening formed therein as indicated at 9. The opening is cut or pressed out of the plate 1921. Serial No. 470,678.

8 and lugs are formed thereon as at 10 to form t a support for a fibre washer 11, which serves as a bearing or guide for a stem 12 of a float 13. Also secured to the intermediate bottom section 8 is a cylindrical extension, 14, andforming aclosure therefor is a plug 15 in which is formed two inletopeningslG, a connecting passage 17, and a discharge passage 18. The openings 16 communicate with the interior of the cylindrical extension 14 and with the connecting passage 17, and the discharge opening 18 similarly communicates with the connecting passage. Forming ac-losure for the lower end of the extension 14 is a bottom section 19 through which the members 16 extend, and forming a normal closure for the discharge opening 18 is a disk valve 20 which serves the function of a check valve which will hereinafter be described.

Forming a part of the removable cover section 5 is a centrallsection 21 which is I cylindrical in shape. Forming a part of the member 21, or secured to the bottom portion thereof, is a pair of interspaced bearing brackets 22. Pivotally mounted as at 23 between the upper ends of the bearing brackets between the lower ends of the bearingbrackets is a valve actuated lever 26 which is connected with the float 13 by means of a link or rod 27. The valve lever24, as clearly illustrated-in g.- is pproximately b i r The uppe nd f th l ve terminates in a hook shaped projection28, While the lower ends of the lever terminate inlugs '29 h s 13 suppert a entin a. pair of bearing extensions 34 receiving the pivot pin 25'. The lOWer end of the bail terminates in a hook 35, and a coil spring 36. connects the levers 24 and 26 by being atis a lever 24,, and pivotally mounted as n25 v tached to the respective hook like extensions 7 28 and 35 as shown in Fig. 1. i The lever arm 26 is further provided with apair of stop members 36 and 37 the stop 36 controlling the lowermost position assumed by the, float .13, and conversely the stop .37 the raised .or

uppermost position .of the float.

Formed within the member 21 is a central chamber 38. Formed in the bottom of the chamber is an opening through which passes a tube 39, and also formed in the bottom section of the'chamber 38 is an opening for valve seat 44 which cooperates with the suction valve 32, which will hereinafter be de scribed. j

The tube 43 is connected with the intake manifold of an internal combustion engine not here shown.v A second tube entering through the cover 5, and indicated at 45 is c'on'nectedwith the storage tank for the reception of gasoline or the like, and a third tube connected with the bottom section 2 as at 46 delivers the gasoline by gravity to the bowl of a carburetor. The cover 5 as previously statedis removable. The'tube 39 extending therethrough is turnably mounted in the bottom section of the extension 21, but the lower end of the tube is threaded and is adapted to be received by a threaded boss 50 secured to the intermediate bottom section 8; the'upper end of the tube being shouldered as at'51 to form a head like projection which will exert a downward pull on the cover 5 when the tube is turned; the tube being furthermore slottedas at 52 to permit it to be turned by a screw driver or like device. The central chamber 38 formed in the cover is normally closed by a plug 53. This plug is however provided with an air vent opening 54 to permit the chamber 38 to "be 1n constant communication with the atmosphere.

In actual operation we will assume that gasoline as been previously admitted to the chamber 6, and that the lower chamber 7 has been completely filled. During the OP? eration of the engine, it is obvious that the gasoline admitted will gradually drain from the chambers 6 and 7 through the pipe 46 which is connected to the carburetor. The gasoline level in the upper chamber 6 finally becomes so lowthat the weight of the float will trip the lever 26 and cause it to assume the position shown in Fig. 1. lVhen this happens it can readily be seen that the spring 26 exerts a pull on the valve lever 24 which will cause it to assume the position shown 1n Fig. 1. TlllS exerts a downward pull on the valves 31 and 32, causing the valve 31 to close with relation to its seat 40, and the suction valve 32 to open with relation to its seat 44. The pipe 43 is continu ously subjected to a considerable vacuum due to the fact that its opposite end is connected wit-h the intakemanifold of the engine. Air contained in the chamber 6 will thus be quickly removed and a suflicient vacuum will be produced within the chairher 6 to cause an inflow of gasoline from the storage tank through the pipe 45. The gasoline thus admitted will gradually fill the chamber 6 and the float will continue to rise until further movement is checked by thestop member 37. The spring 26 will simultaneously, or just previous to the engagement oi the stop, pass beyond the center 23 and will thus trip the lever 24, causing it to open the venting valve 21 and simu'ltaneously close the suction valve 32.

Air is thus admitted and the vacuum broken and the gasoline will now drain freely intothe lower chamber 7, that is it passes around the guide washer 11 and downwardly through the cylindrical extension 14, from whereit escapes through the member 16, the

connecting passage'17, and the discl' arge' opening 18; the hydrostatic pressure being suflicient to lift the check valve from its seat, thus permitting the gasoline to enter the chamber. The float 13 will again gradually settle as the gasoline drainedor consumed by the carburetor, and it will again assume its lowermost position when the springQri passes the center. of the pin 23, as the lever '24 will then trip and close the vent valve 21, and simultaneously open the suction valve 32; the extreme lowermost position of the valve being limited and checked by the stop member 36.. This lower- 3 most position is assumed-until the gasoline level is again raised to the point where the automatic tripping action takes place; the circle of operation being intermittently repeated and repeated as long as the engine is in operation. In fact as far as the principle of operation is concerned, the present device is identical to. the standard form of vacuum feeding devices now in general use.

The real novelty, as far as the present invention is concerned, is the general construction of the levers shown in Figs. 3 and 5; the construction of the: removable cover 5; the method of securing the same by means of the tube 39, and the general arrangement and construction of the cylindrical extension 14 and the check valve 20.

In operation it is obvious that it is'not only necessary to vent and admitair to the chamber 6, but it is also necessary to vent the chamber 7. I This is'oontinuously vented in the present instance through the medium of the tube 39 as this tube is open and in constant communication with the atmosphere through the chamber'38 and the vent pas-. sage 54. In fact this tube serves three functions, first that of a continuously open vent for the chamber 7 secondly that of" a tie or stay rod for securing the removable cover 5; and third, that of a primlng connectlon for partially filling the chambers 6 and 7, if they should be completely drained; the priming being accomplished by merely removing the plug 53 and pouring gasoline into the chamber or compartment 38. Gasoline poured into this chamber will drain through the tube 39 into the chamber 7 and it will thus supply a sufiicient quantity of gas to start the engine and thereby create the suction required to operate the device.

A gasket may be interposed between the head 51 of the tube-39 and the bottom of the extension 21 to form an air-tight connection between the same. A gasket should similarly be interposed between the removable cover 5 and the seat formed for its reception. These are theonly gaskets and tight joints required in the present instance. The entire mechanism is exceedingly simple and substantial in construction. The cover 5 can be quickly and readily removed or replaced by means of the rod 39; screws, bolts, etc., being entirely eliminated. The levers 24 and 26 are exceedingly simple in design and are in fact so constructed that they may be stamped and formed by a die operation. The float 13 must be inserted through the opening closed by the cover 5 when the mechanism as a whole is being assumed. Considerable trouble is often encountered in placing the stem 12 in its guide bearing, such trouble is however avoided in the present instance as the guide bearing or Washer 11 is placed below the surface of the bottom 8. A recess is thus formed in the bottom which is easily located by the guide stem. Once the rod 12 has been located with relation to the recess, it is obvious that it is fairly easy to move the stem about until the guide bearing in the washer islocated. The difiiculty of entering the guide stem 12 is not so great when the apparatus is first assembled, for instance in a factory, as it may be placed in position before the cover 3 is secured; but it is obvious that considerable difliculty is encountered if the apparatus is taken apart later on as the float can only be inserted and removed through a small opening closed by the cover 5.

By referring to Fig. 2, it will beseen that lugs 42 and 42, are formed on the cover and that these are disposed on an angle. This is of considerable importance as it permits the tubes 43 and 45 to be connected with the cover without employing elbows, nipples, etc; that is tubes 43 and 45 are preferably constructed of copper or the like, and as such may be bent to form a gooseneck connection, thus avoiding the use of elbows, etc. particularly as they enter the I "a tank divided lnto anupper and'a lower f cover on an angle. In fact all connections with the tank are made through the cover, thus materially simplifying, the structure'as a whole.

iVhilecertain features of the present invention are more or less specifically illustrated, I wish it understood that various changes in form and proportion may be resorted to within the scope of the appended claims,-similarly that the materials and-finish of the several parts employed may be such as the experience and judgment'of the manu facturermaydictate or varying uses may demand. I

Having thusdescribed my invention, what I claim and desire to secure byLettersP-a'tentisi 1. A vacuum feeding device comprising a tank divided into an upper and a lower compartment, a removable cover member for the upper compartment, a rod extending therethrough, said rod having a central passage formed therein in communication with the atmosphereat one end and in communication with the lower chamberat the other end, means forming a connection between the upper end of the rod and the cover, and means for exerting a pull on the rod to se cure the cover. v

2. A vacuum feedingdevice comprising atank divided into an upper and a lower compartment, a removable cover member for the upper compartment, a rod extending therethrough, said rod having a central pas sage formed therein in communication with the atmosphereat one end andin communication with the lower chamber at theother end, means forming a connectionbetweenthe upper end of the rod and the cover, a threaded extension on the lower end of the rod, and a threaded member within the container for the reception of said threaded extension.

compartment, a top'for the tank having an j I opening therein, a closuretfor the sai-dopen ing, interspaced brackets within-' the upper compartment and avalve' lever secured to the brackets, anactuating lever also carried by the brackets and connected at one end to i the valve lever and at the-other end to a opening therein, a closure for the opening comprising a plate having a, cylindrical well "therein closed by a plug, the said wellhavand float deing' an'openingthereinforming a valve seat,

a valve coacting with the seat and a valve lever "carried by the closure for operating the same,the sald well' hav ng constant com- 'IHLIHICELUOII' with the atmosphere.

5. A vacuum feeding dev'ice comprising compartment, a check valve connecting the same, permitting'a flow of liquid from the upper comp artment the lower compartment, but checking movement inthe opposite 'direction, a removable cover for the 'upper compartment, a centralQprojection' formed on "the-cover, a chamber formed therein, a head and tube extending through said chamber andthe bottom thereof, a threaded boss" placed within the tank, a threaded connection on the lower end of the tube adapted to be received by the threaded member, said tube adapted to exert a downwardpull on the cover to secure the same, and said tube forming a ventingconnection between the lower compartment and the atmosphere, a screw plug forming a closure for the cham-- ber formed in the cover, and a ventingpass sage in said plug and in constant communicationwith the atmosphere. H

6. Avacuum tuel'feeding device-comprising a tank divided into an upper and a lower compartment, a removable top forthe tank carrying: interspaced brackets thereon, a substantiall bail-shaped lever having a lip thereon secured within the brackets, a sub? stantially bail-shapedactuating lever having a lip thereon also secured within the bracket, a springconnecting between the lips on the levers, and stops on the actuating lever for limiting its motion. r

'7. A vacuum feeding device comprising a tank, a partition member therein dividing the tank into, an upper and a lower chamber, a check valve carried by said partition member permitting a flow of liquid from the upper chamber to the lower chamber, a removable cover for the" upper chamber, a pair of bearing brackets secured to thecover, a Valve lever pivotally mounted between the bearing brackets, a float actuatedlever also pivotally mounted'between the brackets, a spring connecting the levers and exerting a pull between thesame, a venting valve and a suction valve actuated by the valve lever and adapted to be alternately opened and closed thereby, a float connected with the last named lever] and adapted to impart movement thereto, a-suction pipe communicating-with the suction valve, a venting tube connecting the cover and the partition member and forming a constant, vent for the lower chamber, a liquid supply tube connected with the upper chamber, and means limiting the .movement of the float actuated lever in'eitherdirection. v

'8. In a device ofthe' character described the combination with the tank and the partiti on member mounted therein, dividing the tank into an upper and a lowerchamber,

of a cylindrical extension secured to the partition member, a bottom for said cylindrical extension forming a closure therefor, an opening formed inthepartition member in communicationwith the upper end of the cylindrical extension, lugs formed around the edge of said opening and a' guide washer secured between said lugs. i

described 9. In a device of the character I the combination with a tank and the partition member'mounted therein, dividing the tank into an upper and a lower chamber,

of a cylindrical extension secured to the passage, a valve seat formed at the upper end of the dischargepassage and a disk valve movable between said; seat and the bottomof the cylindrical extension.

10. In a device of the character described the combination with the tank andthe partition member secured therein dividing the tank into an upper and a lower chamber, or a cylindrical extension secured to the partition member and projectingv downwardly into the lower chamber, a bottom member for .said cylindrical extension forming a closuretherefor, an openingv in the partition member communicating with the upper end 'Ioi the cylindrical extension, a casing secured to the bottom of the cylindrical extension, said casing having a pair of upwardly extending extensions passing through thebottom of the cylindrical extension and 'securedthereto, a passage formed in each of said extensions, a cross passage in the casingv connecting said passages,v a discharge passage communicating withthe cross passage and alsoformed in the casing, a valve seat formed at the upper end of said passaga-and a valve disk movable between said seat and the bottom of the cylindrical, extension. 1

11. In a device of the character described the combination with the tank and the partition member mounted therein dividing the tank into an upper and a lower chamber, of a removable cover for the upper chamber,

atube extending through the cover, a thread- ,ed'boss secured to the part1t1on member, a

threaded extension on the lower endof the tube adapted to be received by the threaded boss, and a head member on the. upper end of the tube engaging the cover and permit ting turning movement to be imparted to the tube, said tubeform ng a venting connection betweenthe lower chamber and the atmosphere, and said head memberon the tube-exerting a downward pressure on the covert secure the same. H

12. A vacuum fuel feeding device comprising a tank, a top for the tank having an opening therein,- a closure for said opening, interspacedbrackets carried by the closure and supporting a valve lever thereon, an actuating lever also carried bythe brackets and 1,4ee,eo2 5, I

connected at one end to the valve lever and therein, a closure for the opening having a at the other end to a float, the said brackets, Well therein,. a hollow tube carried by the 10 levers and float depending from the closure closure and extending into the Well, the said being removable through the opening in the hollowtube providing means for fastening 5 top of the tank as the closure is removed. the closure, venting the tank and priming 13. A vacuum :Euel feeding device comthe same when the fuel tank-has been exprising a tank, divided into an upper and hausted. 1 lower compartment and having an opening JACOB JACOBSEN.

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