US1242287A - Fuel-feeding apparatus. - Google Patents

Description

Patented 061;. 9,1917.

F. WEINBERG` [FUEL FEEDING APPARATUS. APPLICATION FILED DEC. 11,191.4.`

ivm/Emol? TTorinEY gx. @MMA clear, and' exact FREDERICK WEINBERG, OF DETROIT, MICHIGAN.

FUEL-FEEDING APPARATUS.

Specication of Letters Patent.

Patetea oct. a, i917.

Application filed December 11, 1914. Serial No. 876,604.

To all whom, t may concern Be it known that I, FREDERICK llTEINBERG, a citizen of the United States, residing at Detroit, county of lVayne, State of Michigan, have invented a certain new and useful Improvement in Fuel-Feeding Apparatus, land declare the following to be a full, description of the same, such as will enable others skilled in the art to which it pertains to make and use the same. reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to apparatus for supplying a hydrocarbon to a current of air to form a combustible mixture and is especially designed to be used with an internal combustion engine.

A special object of my improvements is to provide an improved mode of drawing the liquid hydrocarbon from thel supply reservoir and for maintaining a constant level in the reservoir from which the spraying nozzle is directly supplied and an apparatus that shall maintain a constant level relative to said nozzle when such direct supply reservoir is tipped at different angles and means for supplying from said nozzle quantitatively a less proportion of hydrocarbon t0 the air at high speeds. ,I

I secure this object in the device illustrated in the accompanying drawings in which,

Figure l, is a cross section of an apparatus embodying my invention together with so much of the supply reservoir and the intake passage of an internal combustion engine as is necessary to illustrate the relative ar- .`rangement of said apparatus with reference to these parts.

Fig. :2, is a section similar to Fig. 1 show- `ing a part of said apparatus with the movable parts in a second operative position.

Figs. 3, 4 and 'are detail sectional views of a part of said apparatus illustrating how a constant level of the liquid in the direct supply reservoir relative to the spraying nozzle is maintained with different angles of lateral inclination of such reservoir.

a a is a casing constituting an auxiliary tank divided into two compartments forming a. constant level reservoir b and an intermediate reservoir c, the latter being located directly above the former. f is a short pipe, or passage, leading from the reservoir c and extending a short distance downward which,

into the reservoir b, the lower end of the passage, or pipe, f is cut or chamfered to an angle which may be about 45' degrees, as shown, and this lowerend is open, the highest part of said opening being indicated by the reference let-ter f1.

b2 is a passage putting the upper part of the reservoir b into communication with the outer air.

The reservoir c is normally closed from the atmosphere. If now a liquid, as gasolene is poured into the reservoir c, it will flow down the pipe, or passage, f until it has filled the reservoir b toa level which shall close the opening of the lower end of the passage f and prevent air passing up said passage, and this level of liquid in the reservoir I) will be maintained, or if liquid is removed from it, it will be restored, automatically, by a supply from the reservoir o in a familiar and well understood manner. If now the reservoir b is turned to dillerent angles, as indicated in Fi s. 3, 4 and 5, the level will still be maintained at the height of the point f1.

1' is the intake passage through which the air is drawn for combustion engine.

e indicates a supply tank forming a source lof supply of liquid hydrocarbon.

d is a normally air tight float chamber, in

the example shown formed within the reservoir c. g, is a passage through the bottom of the chamber d. L is an automatic outwardl)7 opening valve adapted to control the passageg, and z' is a pipe communicating with the interior of the chamber d and eX- tending downward beneathk the level of the liquid in the supply tank e.

j, isan opening through the top of the chamber d and mis a second opening by when the opening j is unobstructed, the chamber d will be placed into communi- .cation with the reservoir c through the openlngs y', m. `c is a. valve adapted to controlA the opening j. 8, is a valve stem extending downward from t-he valve c. y, is a double armed lever pivoted to a stationary support z. A rod a: is pivotally connected at its upper end with the outer end of one arm of the lever y, the other end 2 of said lever extends between two lugs 12 on the stem 3. 4, is a spring secured at its ends at opposite sides of the chamber d and extending transversely across said chamber. The spring 4 is bent between its Secured ends and at its the charge for an internall center is secured a float 5. The spring 4 extends between two lugs 11 on the valve stem 3 and between another pair of lugs on the valve stem p.

ln, is an opening extending through the top of the chamber d provided with a valve seat at both ends against which the valves p and 0 areadapted to seat to close thev opening n. g, is a pipe opened at one end into the passage fr. and at the other end into an inclosed chamber with which the passage n communicates.`

8, is a throttle valve in the passage 7 and 9 is a passage leading from beneath the level of the liquid in the chamber b to a point just above the closed valve 8.

t is a conical sheet metal sleeve tting at its ends and adapted to reciprocate in the passage r and being constricted toward its center so as-to leave a vacuum chamber between said sleeve and the wall of the passage r and to form a strangling tube. The pipe Q communicates with the passage 7' in said vacuum chamber. 'v is a coil spring resting at its upper end and against lugs 'w w2 and at its lower end pressing the tube t downward. vu is a lug limiting the downward travel of the tube t. s is a delivery, or spraying nozzle, leading from the reservoir I) and extending into the-passage r and terminating in a spraying aperture s1 in the constrict-ed portion of the tube t.

The lugs lw fm2 and u are fixed eccentrically to screw threaded plugs which extend through the wall of the passage 1'. By turning saidplugs the position of the lu'gs is altered and thus the-tension of the spring 'v may be adjusted by means of the lugs w 'wz or the position of the tube t by means of the lug u.

The plug from which the, lug w2 extends is provided with a lever arm at its outer end and this arm is united by a connecting rod with the arm 13 by which the throttle valve is manipulated, so that the adjustment of the throttle valve shall also adjust the tension of the spring fv.

7, is a cock extending from the air space of the reservoir c to the outer air. By openf ing the cock 7 air may be admitted to the reservoir c and the liquid ltherein will thereby be permitted to flow through the tube f into the reservoir b to temporarily raise the level of the liquid therein.

It will be observed that the points f1 and s1 are directly in line with each other longitudinally of the *vehicle so that when the reservoir is tipped laterally, as shown in Figs. 3, 4 and 5, the points indicated by said letters will remain at the same level as shown. i A s v The operation of the above described device is as follows:

l. When there is a suliicient amount of liquid in the reservoir e and chamber d, the float f V shown in Fig. 2,

' ered through the passage 9.

incase? will be raised thereby and will press the spring 4: up to and beyond the straight line between its vsupports when the energy accumulated will carry'it positively upward to the position shown in Fig. 2 thus closing the opening n by means of the valve p an raising the valve k through the lugs 11 and valve stem 3 and the raising of this valve stem carries the end 2 of the lever y upward and presses the rod o: downward striking against a lug or arm extending from the valve 71. and assisting to open said valve.

Y In this position it will be noted that both the air spaces and the liquid spaces of the reservoir e and chamber d are in communi` cation with each other and liquid may freely flow from the latter to the former.

V'Vhen the level of the liquid in the reservoir c and chamber d has fallen by reason of the draft of the engine from the reservoir b, Vthe float 5 will fall drawing the spring 4 down thus drawing the valve p from its seat and causing the valve k to close the passage j. rlhe valve h will now .automatically close by gravity.

In this position of the parts the connections between the air and liquid spaces of vthe chambers c and d are closed and the draft of the engine will draw the air through vthe pipe q .and past the valve o from the chamber d thus causing. a' partial v vacuum in said reservoir and drawing a sup# tank e .through ply of liquid fuel from the the pipe i into the chamber d causing the level of the liquid to rise in said chamber until the parts are returned tothe position when the-liquid thus drawn through the pipe 'i will be free to flow into the reservoir o and from thence through the 'passagef to the reservoir b. It may be observed-that the valve h will open automaticallyfas soon as the passage j is opened by the valve k on account of the higher level in the chamber d and because of the rod striking against a lug extending from said valve. y

lff the throttle valve 8 is closed or nearly closed, the liquid fuel will be drawn through the passage 9 and the engine may be started or primed by causing the fuel,to be deliv- 'lhe reference number 20, Fig. 1, indicates a water jacket surrounding the reservoir b and acting to'impart heat to said reservoir. This water will be supplied from the jacket of the engine or from a similar source' of heat connected with the engine.

rlhe chamber between ithe and the wall of the intake passage will communicate by the passage t2 with the intake passage and therefore will have a partial vacuum drawn therein which will be somewhat modified by the area of the communi'- cating passage between said chamber and the intake passage. `l

Venturi tube What I claim is:

1. In an apparat-us of the kind described, the combination of a supply tank, a vacuum producing passage, an inclosed chamber having a liquid space and an air space, said vacuum producing passage communicating withv said chamber, a conduit extending from a point beneath the liquid in said sup-4 ply tank to said inclosed chamber, an inclosed intermediate reservoir having an air space and a liquid space, aaliquid conducting passage leading from the liquid space of said chamber to said intermediate reservoir, means for permit-ting the flovv of liquid from said chamber to the intermediate reservoir and preventing the flow in the reverse direction, and means closed to the outer air for connecting and disconnecting the air spaces in said chamber and intermediate reservoir. l

2. In an apparatus of the kind described, the combination of a supply tank, an inclosed chamber, a vacuum producing passage communicating with the interior of said inclosed chamber. a conduit extending from a point beneath the liquid in said supplyv tank to said inclosed chamber, an inclosed intermediate reservoir, means Where.,

by the Huid in said chamber is caused to flow to the intermediate reservoir. aconstant level reservoir open to the atmosphere, and a passage 'from the intermediate reservoir to said constant level reservoir open atits lower end and so located that the liquid in said constant level reservoir shall form an air seal so that a substantiallyv constant level shall be thereby maintained in said consta-nt level reservoir.

3. In an apparatus of the kind described,

the combination of a supply tank, an inclosed chamber, a vacuum producing passage communicating vvith the interior of said chamber, a conduit extending from a point beneath the liquid in said supply tank to said chamber, an inclosed intermediate reservoir, means for connecting and disconnecting the #upper portions of said chamber and intermediate reservoir whereby the fluid in said chamber is caused to flow by gravity to said intermediate reservoir, a constant level reservoir open to the atmosphere, and a passage'leading from said intermediate reservoir to said constant level reservoir open at its lower end and so l0 cated that the liquid in said constant level reservoir shall form an air seal so that a substantially 'constant level shall be thereby. maintained in said constant level reservoir.

4. In an apparatus of the `kind described, the combination of a supply tank, an inclosed chamber; an intake passage lto an internal combustion engine. a passage communicating with the interior of said chamber and said intake passage, a conduit extending from a point beneath the liquidin said supply tank to said chamber, an 1nclosed intermediate reservoir, means operating when the air pressure in said chamber and intermediate reservoir is equalized for permitting the fluid in said chamber to flow to said intermediate reservoir, a constant level reservoir open to the atmosphere, a passage leading from the intermediate reservoir to said constant level reservoir open at its lower end and so located that the liquid in said constant level reservoir shall form an air seal sok that a substantiall)r constant level shall be thereby maintained in said constant level reservoir, and a nozzle extending from said constant level reservoir into said intake passa e.

5. n a combination consisting of an intake passage, a liquid reservoir open to the atmosphere, a supply nozzle extending from said reservoir to -said intake passage, an inclosed chamberlocated at a higher level than said reservoir, a passage extending from said chamber downward rinto said reservoir and open at its lower end and so located thatv the liquid in said reservoir shall form an air seal so that normally a. substantially constant level shall be thereby maintained in said reservoir. and means for opening theair space ofsaid chamber to the outer air to the extent and for the time required. A

6. In an apparatus of the kind described, the combination of a supply tank, an intake passage, an inclosed chamber having a 10G liquid space and an air space, a passage communicating with the air space of 'said cham-- ber and said intake passage, a conduit extending from a point beneath the liquid in said supply tank to said chamber, an inclosed intermediatereservoir, a passage leading from the liquid space of said chamber to said intermediate reservoir. means for permitting the lovvy of liquid from said chamber to the intermediate reservoir and4 110 preventing a flow in the reverse direction, means for equalizing the air pressure in said chamber and 4intermediate reservoir when required, a constant levelkreservoir op'en to the atmosphere, a conduit leading dovvn- Ward from the liquid space in said intermediate reservoir and opening into said constant level reservoir and so located that the liquid in said constant level reservoir shall form an air seal` so that a substantially con- Voir, a passage extending from said chamber downward into said reservoir and open at its -lower end and so located that the liquid in said reservoir shall form an airseal so that a substantially constant level shall be thereby maintained in said reser- Voir, and a manipulatable valve whereby air may be admitted to said chamber.` in required volume to prime an engine.

8. In an apparatus of the kind described, the combination of a supply tank, an intake passage, an inclosed chamber having a liquid space and an air space, a passage communieating with the air space of said chamber and said intake passage, a conduit extending rom va point beneath the liquid in said supply tank to said inclosed chamber, an inclosed intermediate reservoir, a passage leading from the liquid space of said chamber to said intermediate reservoir, means for permitting a How of liquid from said chainber to` said intermediate reservoir and preventing a flow in the reverse direction, and

meanscontrolled by the quantity of liquid in said chamber for equalizing the air pressure in said chamber and intermediate reservoirwlien required.

9. ln a vacuum feed system, the combination of a liquid supply tank, a Vacuum-producing passage, an auxiliary vessel having an upper and a lower chamber, a conduit connecting said tank and auxiliary vessel, a passage communicating with said auxiliary vessel and said vacuum-producing passage, a check valve between the chambers opening toward the lower chamber, and a float in the upper chamber adapted to operate said valve mechanically.

10. ln a vacuumv feed system, the combination of a liquid supply tank, a vacuumproducing passage, an auxiliary vessel havving an upper and a lower chamber, a conduit connecting said tank and auxiliary vessel, a passage communicating withy said auxiliary vessel and said vacuum-producing passage, a check valve between the chambers opening toward the lower chamber, a oat in the upper chamber adapted to operate said valve mechanically, said oat being .adapted to be moved in both directions by the fluid and mechanical means at a variable velocity. f

11. ln a Vacuum feed system, the combination of a supply tank, a vacuum chamber, awconduit leading from said vsupply tank to said vacuum chamber, means for making -v and breaking a vacuum in said chamber, an intermediate chamber, a conduit leading from said vacuum chamber to said inter- Y mediate chamber, a constant level chamber, a conduit leading from said intermediate chamber to said constant level chamber, the

last named conduit being continuously open

Images