US1416915A - Apparatus for feeding liquid fuel to internal-combustion engines - Google Patents

Description

s. L. J. VINDRIER. APPARATUS FOR FEEDING LIQUID FUEL T0 INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUGZS I 192l- Patented May 28, 1922.

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APPLICATION FILED AUG-251 192i.

Patented May 23, W22.

2 SHEETS-SHEET 2.

ST'JEJPANE LOUIS JUSH VINDRIER, 01E LYON, FRANCE, ASSIGNO-R TO THE FIRM MATEU, DURANJD ET 01E, 01F LYON, FRANCE.

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Application filed August 25, 1921.

To all whom it may concern:

Be it known that T, S'rrir-HANE Louis JOSEPH VINDRIER, of Lyon, France, citizen of the French Republic, have invented certain new-and useful Improvements in Apparatus for Feeding Liquid Fuel to Internal- Combustion Engines, of which the following is a specification.

The present invention relates to impr0vements in apparatus for feeding liquid fuel to internal combustion engines or the like.

According to the invention the movements of the liquid fuel in the feed apparatus are transmitted by means of a float and bymeans of certain levers to mechanism op erating to put the apparatus in communication either with the source of suction or with the atmosphere.

The power derived from the movement of the float caused by the variation of level of the liquid is stored up by means of the mechanism forming the object of the invention which restores the power by a single movement to the lever governing the closing valves. This result is obtained by varying the angle which the direction of the force makes on a roller, with the surface on which the roller rolls, this force being exerted either by means of a spring or by any means. The angle in question at first acute becomes greater and greater; the spring or the device which bears on the roller is tensioned. by this movement and reaches its maximum tension when the angle reaches 90. In effect at this movement'the component of the force directed according to movements are thus restored at a single stroke and the angle becomes briskly obtuse.

At this moment if as a basic angle the supplement of said obtuse angle is taken and it p is caused to vary as previously theforce exerted on the roller will be again stored. and again briskly restituted when the angle con sidered having slightly exceeded 90 the 1' TUS FOR FEEDING LIQUID FUEL TO IN 1 i specification of Letters Patent.

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Patented May 23-, IW2%. Serial No; 495,366.

component according to the surface of rolling of the roller will have changed direction, and so on.

In the annexed drawing given by way of example.

Fig. 1 is a vertical central section of a feed apparatus, for liquid fuel actuated by suct1on the closing members of which are valves.

2 is a section'on line 2-2 of Fig. 1. Fig. 3 is a view. in section of a modification. 1

The body of the apparatus given by example 1s formed of two superposed reservoirs an upper reservoir a in which the float is housed together with the recuperating-mechanlsm and a lower reservoir 6. The first can be put into communicationwith the atmosphere or with the source of suction while the second which is fed with petrol by the first constantly communicates with the atmosphere by a tube 0.

The upper reservoir a is closed by a cover (l which carries mechanism that will be hereinafter described.

The float e governs by a rod 7 a lever g which oscillates round the axle it carried by a bracket k integral with the cover d. On the bracket is also articulated at 7' a two armed double lever i having in its lower arms two slots i in which slides the axle k of a roller I which is secured to and held away from the axle j by a pair of springs m.

The lever g isprovided with a Hat part g on which the roller Z bears. The extremity of the horizontal arm '5 of the lever '5 engages in the end of a lever n which oscillates round the axle 0 carried by the bracket 0 This lever governs the suction valve p as well as the valve 9 for communication with the atmosphere. These valves are arranged in such a manner that one is open when the other is closed and vice versa. A ball p acts as a retaining valve in case the suction might cease for a few moments or even be transformed into a momentary pressure.

The housing of the valve q is closed by a stopper r provided with holes 1' and communicates with the tube 0 by a channel 0 The housing of the valve 70 is closed by a -'screw threaded stopper 8 and communicates with the source of suction by the channel t and pipe t.

The channel a carrying the guide 7) for the float rod forms a communication between the upperQreservoir a and the lower reservoir b. A flap valve 09 is applied against its orifice when suction is exerted in the reservoir a. The 'flow of the liquid takes place through the pipe 2 and the arrival of the liquid by the tube .2. A filter w arrests any impurities which might be drawn along before flowing into the reservoir a.

The operation of the apparatus is as follows. At the relative positions of the parts shown in Fig. 1 the suction valve 29 is open. The reservoir a is then in communication by the channel t and the tube t with the source of suction; the vacuum is formed in said reservoir; the valve 00 closes against the member u; the liquid sucked through the tube .2 falls into the reservoir a and in rising therein lifts the fioate the rod f of which causes the lever g to pivot round its axis it.

If one considers the angle (a) formed by the direction of the effort of the spring 6 on the roller Z with the flat part 9 of the lever 9 it can be seen that when this lever rocks upwards this angle increases; the roller Z is pushed towards the axle j and the spring a is compressed. Directly the lever reaches the position shown in dotted lines Fig. 1 the right angle is slightly passed; the component of the force of the spring a directed previously by the flat part 9' of the lever 9 towards the axis of the apparatus changes direction and is directed towards the exterior of the apparatus which causes the lever 71 to rock and the springs m to suddenly expand. The lever n drawn by the arm 2' of the lever oscillates round its axle 0 causing the sharp closure of the suction valve p and the opening of the valve 9. The reservoir a is thus put in communication with the atmosphere and the liquid flows naturally from the reservoir a into the reservoir 7;, then both are at atmospheric pressure.

WVhen the level has sufficiently fallen in the reservoir a by reason of the flow through the tube 3/, the float 6 draws by its rod f the lever g. The supplementary angle of the obtuse angle obtained at the end of the rising movement by the rocking of the lever z increases in its turn and when it has passed the right angle it produces again a change of direction of the component by the flat part of the lever g and consequently the springs m. suddenly expand causing the lever i to rock which in resuming the position shown in full lines draws the lever 01,. The valve 9 closes intercepting the communication with the atmosphere at the same time that the Valve p opens giving access to the source of suction and the same cycle recommences.

1n the modification shown in Fig. 3 the float e actuates the lever 2 which,is articulated at 3 and is pivoted to the lever 4 and causes the latter to rise or descend. The lever 4 has on one side of its upper part a double incline 4 4' The other side of the lever 4 is straight and bears on a roller 5 mounted on an axle 5 fixed on the arms 6 of the lever 6 which can pivot on the axle 7 and governs the valves p and q as in the previous construction.

The roller 8 which bears on the double incline 4 4 is mounted on a roller 8 which slides in two slots 6 of the arms of the lever 6. It is maintained constantly supported against the inclines by two springs 9' (one on each side).

lVhen the float c rises it draws with it the lever 4 the upper incline 4 of which moves the roller 8 and tension the springs 51. The angle which the axis of the spring makes with the incline at first acute becomes square when, the roller 8 is at the summit of the incline then in'nnediately this angle is slightly surpassed the springs retract and the lever 6 rocks whilst actuating the valves p and g.

The suction being cut off and the communication with the atmosphere established the level falls in the reservoir a and the float e descends. The lower incline a of the lever 4 again tensions the springs q whilst shifting the roller 8 until the latter arrives at the summit of the incline. At this moment theright] angle is exceeded the springs Q expand sharply the lever 6 rocks and the valves 1) and g are returned to the positions shown on the drawing; the suction pipe is'open and the communication with the atmosphere cut off and the cycle recommences.

\Vhat I claim as myinvention and desire to secure by Letters Patent of the United States is 1. In a device of the character described a container in which liquid rises and falls, a float in said container actuated by said rising and falling liquid, means for guiding said float a lever connected to said float and actuated thereby, a second lever or roller mounted thereon a spring pressing said roller on a surface of said first mentioned lever a third lever connected to said second lever and actuated thereby and valves actuated by said third lever.

2. Apparatus for feeding liquid fuel to internal combustion engines comprising a container having upper and lower compartments means for supplying liquid thereto, means for the outlet of liquid therefrom a vertical tube forming communication between said compartments, a flap valve at third lever connected to said second lever 10 the lower end of said tube, a float in said and actuated thereby to actuate said valves. upper compartment, a lid for said upper In Witness whereof I have signed this compartment a suction valve and an air in- P C fi at in he presence of tWO Witlet valve in said lid a lever connected to said 1168865- float and operated by the movement of the STIEPHANE LOUIS JOSEPH latter, a second lever a roller mounted tliere- Witnesses: on, a spring pressing said roller against a JEAN GERMAN,

surface of said first mentioned lever and a LUCIANNE BOUERET.

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