Патент USA US2120266код для вставки
‘June 14, 1938. D. SAMI'RAN 2,120,266 I FLUID DISPENSING APPARATUS Filed March 10, 1936 INVENTOR ‘ L241// BY ' ‘SAy/RAYN - 2,120,266 Patented June 14, 1938 UNITED STATES. PATENT . OFFICE ' _ 2,120,266 I ' FLUID DISPENSING APPARATUS , David Samiran, Dayton, Ohio , Application March 10, 1936, Serial No. 68,076 a 22 (Claims. (01. 221-95) ' (Granted under the act of March a, 1883, as amended April 30, 1928; 3'70 0. G. 757) - The invention described herein maybe manu-. factured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon. The present invention relates generally to ?uid segregating apparatus and more particularly to obtain a discharge of only the desired of such ?uids from the system. '1 A further object of ‘the present invention isto provide‘ in a ?uid dispensing apparatus for the separation of non-miscible liquids and subsequent “5' isolation of miscible or non-miscible liquids have force feed ?uid dispensing systems in which a ing di?erent speci?c gra'vities a ?oat controlled ties is obtained. of said liquids only as long as. said liquid‘ has a ‘ separation of ?uids of different speci?c gravi-v means operating to permit the discharge of one The present invention is particularly directed desired speci?c gravity, said means'being ren- 1° to ?uid supply or ?uid dispensing systems in dered' inoperative to prevent discharge of any which the supply tank is practically inaccessible ‘liquid from said system whenever the speci?c or disposed underground and in which the ‘?uid gravity of any of the liquids, whether miscible is fed from the source of supply by suitable ?uid or non-miscible, is less than a predetermined impelling or ?owing means. 20 - value. from 25 30 35 4O ~ ' . 15' - A further object of the present invention is It is a well-recognized fact that while cer-' ‘ tain ?uids of different speci?c gravities; such as to provide in a ?uid dispensing. apparatus‘ of. this character means for separating and trapwater and oil or water and gasoline, are normal ly not miscible, yet these ?uids, when agitated, ping the undesired component of twov miscible will form an emulsion or mixture that is not liquids, said means operating-to not only prereadily separable. When such‘ non-miscible vent the passage of such undesired components emulsi?ed ?uids are present in a dispensing sys ‘through the system- but also to effect aninter tem and the tank is inaccessible to permit a mittent discharge of said undesirable components gravitational segregation of the ?uid of heavier A still further object of the present invention speci?c gravity that has settled .to the bottom of the tank and it is desirable to isolate these ?uids is to provide in a ?uid dispensing system for from each other, it will be apparent that such the separation of, non-miscible liquids and sub sequent isolation of two miscible or non-miscible isolation must take place before the ?uid is dis pensed from the apparatus. ,Especially is this liquids having different speci?c gravities, ‘an aux iliary storing chamber having a ?oat controlled true iivthe ?uid is fed from the source of sup ply by suction impelling means, as in the case valve mechanism and metering means- associated of conventional pump dispensing systems for the with said valve mechanism for accurately meas reason that the mechanical action of the suction uring the quantity of ?uid passing from said stor ing chamber, said metering means being‘entirely impelling means tends to emulsiiy thev compo dependent upon the actuation of said valve mechnentsin passing through the system, thus af anism to be rendered operative insofar as per fording no opportunity for the liquids to be grav mitting discharge of liquid from the system. ity segregated before reaching the point of de livery due to the velocity of their passage through " A still further important object of the present invention is to provide in a ?uiddispensing sys the delivery pipe. Under these and other circumstances, said system. I ' Y > - ‘ ' ~ " 20 ' 25 '30" 35 the ' tem of this character, a ?oat controlled means 40 grade, weight, and accurate. measure of the liq uid dispensed becomes exceedingly problematical. It is therefore the primary aim and one of the important objects of the present‘ invention to 45 provide a ?uid dispensing system incorporating ‘a. plurality of ?uid segregators so disposed with respect to the source of ?uid supply and the ?uid impelling means as to automatically and ac curately effect not only a segregation and sepa- ration of the undesirable components, such as water, oil, etc_., from the ?uids in the system im ' mediatelyeafter their leaving the source of sup ply, but, in addition thereto, toeffect a separate segregation of theremaining miscible or non 55 miscible ‘?uids remaining inthe; apparatus and ‘for not only removing air from said system, due to leakage of the ‘Joints or from other causes,‘ prior-to the passage of the ?uid‘ through'said , metering means, but, in addition thereto, to maintain the, ?uid ‘in ‘said storing chamber '0! 45 a predetermined pressure and therebyvinsure a discharge of ?uid from said system having a pre determined weight, grade and measure‘. ' ‘ . With the foregoing and other objects, in view,‘ the, invention'consist‘s in the novel construction 50 ‘ and arrangement. of ele‘mentsgdescribed, illus ' trated,‘ and claimed, itv being understoodthat other modi?cations may be made.‘ within the scope of the claims without departing iromthe spirit oi'the invention. , ' , ' 55 2 . 2,120,206 In the drawing: ' . Fig. 1 is a diagrammatic cross-sectional view of the dispensing system in a present preferred em bodiment of my invention. a ' Fig. 2 is an enlarged sectional detailed view of a bleeder valve arrangement used in connection with. my invention. Referring more particularly to the drawing, wherein corresponding parts are designated by , like numerals throughout the several views, the apparatus in the present preferred embodiment of_ my improved system herein illustrated com prises generally a source of ?uid supply that is , located, as is the general custom. in an under 15 ground storage tank A and a ?uid dispensing ap a gravitational segregation of a ?uid of heavier 20 speci?c gravity from a ?uid of lighter speci?c gravity and an upper, or secondary, segregator Ii for separating the residual ?uid received from said ?rst-mentioned segregator. The lower segre gator l0 incorporates a ?oat controlled valve 25 mechanism of the type generally set forth in Re issue Patent No. 19,227, granted to me on June 26, 1934, and in whichI have described a new and novel method and means for adjusting a ?oat to have known buoyant characteristics in a refer 30 ence medium of given ‘density but sink in any _ The upper segregator incorporates a ?oat con trolled valve mechanism of the type set forth in my copending application Serial No. 61,361, filed 35 January 29, 1936, in which I have described a ?oat controlled valve mechanism incorporating a ?oat capableof automatically adjusting itself to have a predetermined weight in a given reference medium when immersed therein so that, when 40 once adjusted, the upper surface of said ?oat will assume a predetermined position between the common surface of such reference medium and any other overlying medium having a density 45 less than the density of the reference medium. The system further incorporates the use of im pelling means such, for example, as a motor driven pump II which is interposed between the upper and lower segregator units, heretoforemen tioned, metering means It for measuring the liq 50 uid discharged from the-upper segregator and a discharge mechanism l4 for dispensing the liquid subsequent to its passage through the metering means. ‘ mined value. ' The underground tank A is provided with a 55 suction delivery pipe l5 which is connected at its one end to the upper inlet passage lS-of the lower segregator Ill. The other end .of the delivery pipe I! is positioned adjacent the bottom of the tank A and provided with a foot valve H which op erates to maintain a constant head of liquid in the pipe l5 even though the tank is completely ‘ _ v The ?oat chamber l8 further embodies an up-. per outlet passage 26 which is connected to the intake port 21 of the pump l2. The outlet port 10 28 of the pump communicates with a fuel delivery pipe 29 which connects at its upper end with a ?uid receiving or storing chamber 30 forming a part of the upper segregator H, heretofore men tioned. paratus generally indicated by the letter B. The ?uid dispensing apparatus comprises a primary, or lower, ?uid segregator Ill adapted to obtain other medium of less density. head of the heavier or undesirable component in the ?oat chamber and to obtain an automatic and intermittent segregation of such undesirable com ponent from the ?oat chamber when the com bined head of the lighter and heavier components in the ?oat chamber is greater than a predeter I 15 As a matter of precaution and with a view to wards avoiding deception in the dispensing of liquids, the side walls of the storing chamber are formed of transparent material so that the con tents of the chamber may be readily observed. 20 Within this chamber there is suitably mounted a‘ self-adjusting ?oat 3| constructed in accordance with the teachings of my copending application Serial No. 61,361, hereinabove referred to. The storing chamber 30 further incorporates an inner 25 transparent container 32 which is spaced from the side walls thereof. This container is also formed of transparent material and embodies a lower outlet passage 33 provided with a valve ‘seat 34 against which the lower needle valve 35 ‘of 30 the ?oat 3| is adapted to seat. The lower outlet‘ passage 33 of the container 32 is suitably connected to the inlet .port 36 of the metering unit l3. The outlet passage 31 of the metering unit is connected to a dispensing nozzle 35 forming a part of the discharge mechanism here tofore mentioned“ It will be noted that the pipe 31 which interconnects the metering unit i3 and the dispensing nozzle l4 includes a pressure con trol relief valve 38 which operates to control the pressure of the liquid transmitted to the nozzle l4. The upper end of the ?uid storing chamber 30 is provided ‘with an adjustable pressure con trol relief valve 39.‘ This valve, as shown in en larged detail in Fig. 2, preferably comprises a 45 valve housing 4|! which is suitably secured to the upper end of the chamber 30 and which is suit ably apertured as at 4| to receive the upper nee dle valve 42 of the ?oat II. The housing 40 fur ther embodies a valve-seat body portion ‘43 50 formed at its lower end with an inner seat 44 against which the needle valve 42 is adapted to engage.’ The valve body portion 43 further in corporates an outer valve 45 which engages against a seat portion formed internally of‘ the valve housing, as indicated at 46. Movement of the valve body portion 43 upwardly relative to the housing 40 is controlled by a spring 41. The tension on this spring is controlled by a suitable adjusting nut 48 and voperates to control the 60 opening or closing of said valve body portion. The valve body portion is further provided The lower segregator ll includes a ?oat cham -wlth an exhaust port 49 which communicates ber It, a ?oat l9 disposed within said chamber, a 65 lower needle valve 720 and an upper needle valve ,1 with an air line 50, the latter, in turn, commu nicating with the upper end of the storage 2 I, both of which are operatively connected to and tank A. v controlled by the ?oat It. The ?oat chamber ll The operation of the device is as follows: Ini further incorporates a lower outlet passage I2_ tially, let us assume that air is present in the having a valve-seat 23 against which the lower system,‘ as would be the case upon the initial 70 needle valve 20 is adapted to seat. The passage assembly of the apparatus. with the pump in way 22 embodies a discharge tube 24 incorporating operation, fuel contained in the storage tank A a check-valve 25 which is constructed in accord will be forced upwardly through the pipe l5, ance with the teachings set forth in my copending into the‘ ?oat chamber it of the lower segre application Serial No. 630,237, ?ied August 24, gator ll, through its upper inlet passage l6 and 75 1932, and which operates to trap a predetermined thence outwardly through the upper outlet pas 75 exhausted of liquid. A 2,190,266 sage 26 and into the pump [2. As long as the 3 ' chamber, the ?oat 3|‘ win tend to rise further and will raise the valve body portion from its let passage 16 are of a speci?c gravity which seat 45 against the action of the spring 46, and ' is less than the speci?c gravity of the reference ?uid will be discharged into the line 50 and re medium to which the ?oat H has been adjusted,‘ turned into the storage tank as long as the pres-’ the ?oat will not be buoyant. Consequently, the sure in the storingchamber 30 is excessive. In lower needle valve 20 will _be seated on its valve any event, should the volume of liquid entering seat 23 and the incoming ?uid will be forced the storing chamber be greater than the volume outwardly and upwardly by suction pressure to of liquid discharging through the relief valve 39, > ‘the tendency toward increasing pressure would 10 10 ward the liquid storing chamber 30. As the-liq uid passes through the pump l2 and is being be accommodated throughv the bleeder arrange several components of the ?uid entering the in forced upwardly toward said receiving chamber, ment incorporated in the pump l2. . the air that is present will be forced from the apparatus through the relief valve 39 and thence 15 returned to the storage tank through the con duit 50. Should the ?uid which enters the lower The foregoing explanation as totthe operation of the invention has been limited to cases aris ing ‘where the ?uid entering the storing chamber 15 segregator chamber comprise several liquids such, is of a speci?c gravitywhich corresponds to that for which the upper ?oat has been adjusted. Should the ?uid entering the'storing chamber comprise two liquids which are miscible such, for 20 example, as high testgasoline and low test gas oline, and since the ?oat M has been adjusted to be buoyant in‘ the heavier of the liquids._there would occur by reason of the miscibility of such liquids a. resulting liquid medium having a spe 25 ci?c gravity which is less than the speci?c grav ity of the heavier liquid but greater than the speci?c gravity of the lighter liquid. Since, as ' for example, as water and- gasoline, or water, gasoline, and kerosene, or any combination of 20 liquids which contain at least the reference me dium to which the lower ?oat has been adjust ed, the ?oat will respond in the reference me dium and rise in said ?oat chamber. -For ex ample, suppose water is the reference medium,_ 25 the ?oat will be buoyant in the water, but sink in any other liquid or liquids having a speci?c gravity less than the speci?c gravity of the wa ter, and should the head of water which accu mulates in the lower ?oat chamber be su?icient 30 to materially raise the ?oat, a segregation'of the water will occur in the lower ?oat chamber and a subsequent discharge of such water obtained or at least one of the components of said ?uid aforementioned, the ?oat will not be buoyant in such a resulting liquid by reason of its adjust 30 ment to ?oat in a heavier liquid, no liquid can be discharged from the storing chamber. On " from the apparatus through the discharge tube " the other hand, the entering ?uid may consist 24. If the amount of water entering the lower of two or more non-miscible liquids which re 35 ?oat chamber is excessive, a, further upward dis placement of the lower ?oat will operate to close the upper outlet passage 26 and prevent the ?ow of the overlying medium as‘ well as any other medium toward the upper storing chamber 30. ~40 As long as the ?uid continues to flow into the storing chamber 30 and should one of the com ponents of such ?uid have a speci?c gravity which corresponds to that for which the upper _ ?oat 3| has been adjusted, the ?oat will auto 45 matically adjust itself to such component in ac cordance with the teachings of my above-identi ?ed copending application Serial No. 61,361 and thereafter rise in said chamber. -In rising, the lower needle valve will be raised and thus permit 50 a ?ow of‘the desirable component of such en main in the apparatus even though an undesired liquid such as water has been segregated from the system by the lower ‘segregator. ‘Under these circumstances and as long as the speci?c gravity of the heavier of these liquids corresponds to the speci?c gravity of the reference medium to which 40 the ?oat has been adjusted, a segregation will occur but not otherwise. Therefore, if the head of the overlying, or lighter, medium be excessive, the ?oatvwill be displaced downwardly and the lower needle valve 35 will become seated against 45 the valve-seat 34 and thus again prevent fur ther passage of any ?uid into the metering unit. During the time that the pump i2 is in opera tion and'the passage of the ?uid into the pump from the lower segregator chamber is prevented 50 by reason of an excess of the undesirable com tering ?uid into the metering unit l3 and to ward the dispensing nozzle of the apparatus. ponent in the lower segregator chamber, means, When a su?icient head of liquid is contained - is provided to permit a rapid discharge of this within the upper storing chamber, the upper undesirable component. To this end I provide‘ a needle valve will seat against the valve-seat 23 by-p'ass line 5| which is connected at its upper which, as aforementioned, is contained within end with the lower inlet passage of the storing the pressure relief valve 39 and held against chamber 30 and which, at its lower end, is con opening before a predetermined pressure is nected to the upper inlet passage l6 and the ' reached. and pressure will be built up in the lower ?oat chamber l8. By means of this ar storing chamber 30. When the pressure in this rangement, as long as the ?uid passageway lead vco chamber corresponds to the pre-set pressure of ing into the pump from the lower segregator is the control valve 38, said valve will open and closed, the head of the liquid represented by that permit a ?ow of the ?uid through the dispensing contained within the receiving chamber and the by-pass 5] is utilized to force the said undesirable It is necessary that the expansion of the liquid component through the discharge tube 24, it be 65 nozzle. ‘ - ~ in the storing chamber, arising from changes in _' ing understood that during this period air may atmospheric temperature or other causes, be ae- ' readily enter'the ?uid storing chamber 30 through commodated with the pump inoperative,otherwise the relief valve 39 heretofore mentioned. - Should damage would occur with the receiving chamber the level of the liquid in the storing chamber vdrop by reason of the discharge of liquid through the 70 completely ?lled with ?uid. Under these circum stances the ?oat 3| willv be displaced upwardly , by-pass 5|, the upper ?oat will‘ be lowered and ' and its upper needle valve will be seated against consequently prevent further passage of the de the initial valve-seat 43 and prevent the escape of air or ?uid into the return line 50. Obviously, with an increase of pressure within the storing sired liquid into the metering unit. » . It should also be observed that the-construc tion of the inner container 32 lends itself toward 75 ‘ 4 - 2,190,200 trapping ‘a predetermined head of liquid there in, should the head of liquid in the storing cham ber decrease by reason of leaky connections in the apparatus between the source of supply and the storing chamber. Obviously, under these cir cumstances; when once adjusted to a desired ref erence medium, the upper ?oat will function properly. . means communicatively connected in common with the output side of said impelling means, the input side oi said metering means, and said source of supply, said ?uid density responsive means serving to ponent of from said means in control the ?ow the residual ?uid segregator means accordance with of a liquid com medium received to said metering a predetermined , Under ordinary operating conditions-the suc density and quantity of said component and to tion produced by the pump I2 has a tendency to control the ?ow of components of lighter density 10 hold the needle valve 2| oi’ the lower segregator of said residual medium to said source when either in seating engagement with its valve-seat. To the density or- quantity of saidliquid component this end and in order to obtain a positive unseat is below the predetermined value. ing of the needle valve II when occasion requires. 3. In a ?uid dispensing system, a source of ?uid 15 I intend that the needle valve assembly of the v supply, suction means for withdrawing the ?uid 15 lower segregator unit be constructed in accord from said source and for ?owing said ?uid ance with the teachings of Patent No. 1,948,543, through said system, segregator means com issued to me on February 27, 1934, wherein I have municatively connected between said sourceand described a novel means for permitting a limited said suction .means for effecting an automatic 20 ?oating vertical movement between the ?oat and segregation of a ?uid medium of heavier speci?c 20 the needle valve assembly and which operates to gravity from a ?uid, medium of predetermined break the vacuum between the upper needle valve maximum lighter speci?c gravity prior to the dis and its seat and thus permit ?uid to pass into the charge of said'lighter medium through said suc pump. ' tion means, ?uid metering means and ?uid den 25 From the foregoing detailed description as to‘ sity responsive means communicatively connected 25 the construction and operation of my dispensing between said suction means and said metering apparatus, it will be apparent that I have pro means for controlling the ?ow of a liquid com vided new and novel ‘means which operate to per ponent oi’ the lighter medium received from said .mit a discharge oi’ liquids having a predetermined segregator means to said metering means in ac 30 speci?c gravity-one in which the undesirable cordance with a predetermined density and quan 30 components of two non-miscible liquids will be tity'ot said liquid component. separated from the desired component and subse '4. In a ?uid dispensing system, a source of ?uid quent discharge of the undesired component from supply, suction means for withdrawing the ?uid the system prior to its teaching the pumping from said source and for ?owing said ?uid 35 unit; one in which all of the air present in the ap through said system, ‘segregator means communi 35 paratus is bled from the system prior to the dis catively connected between said source and said Pensing of any liquid; one in which excessive suction means for effecting an automatic segre pressure built up in the apparatus may be re gation of a ?uid medium oi’ heavier speci?c grav lleved through an arrangement of valves and by ity from a ?uid medium of predetermined max passes without the loss of any of the desired imum lighter. speci?c gravity prior to the dis 40 liquid; and, ?nally, one in which the ?uid dis charge of said lighter 'medium through said suc pensed is of a predetermined weight, grade, and tion means, ?uid metering means and ?uid den an amount corresponding to that indicated by the sity responsive means communicatively connected apparatus. f ' in common with the output side 01' said impelling - 45' Having described the invention, it will be ob means, the input side of said metering means and 45 vious to those skilled in the art that the construc said source of supply, said ?uid density respon tion shown and described is subject to changes, sive means serving to control the ?ow of a com alterations and modi?cations‘. I am fully aware ponent of the lighter medium received from said segregator means to said source when the density and quantity of said component is above a pre of this and his to be understood that the spe ci?c construction shown‘ in the accompanying drawing is, merely illustrative of the present pre ferred embodiment of my invention and that I consider myself entitled to all such changes and modi?cations as may fall within the purview and 55 limit of the appended claims. ' What I claim is: 1. In a ?uid dispensing system, segregator means for e?ecting an automatic segregation of ' ' Y 5. In ‘an apparatus for transmitting a liquid of predetermined density from a source of supply to a point of delivery, segregator means for effect ing an automatic Segregation oi’ ?uids of diiferent 55 speci?c‘ gravities, ?uid impelling means to feed said ?uids from said source to said segregator means, ?uid metering means, and ?uid density responsive means communicatively connected be ?uid supply, ?uid impelling means to feed said tween said ?uid impelling means and said meter ?uids from said source to said segregator means, ing means for controlling the ?ow "of a liquid ?uid metering means, and ?uid density responsive component of the residual medium received from means communicatively connected between said .said segregator means to said point of delivery ?uid impelling means and said metering means througlrsaid metering means in accordance with 65 for controlling the ?ow oi’ a liquid component of a predetermined ' density and quantity of said 65 the residual ?uid medium received ‘from said component and valve means to control the pres segregator means to said metering means in ac sure'oi’ liquid passing toward said point of de cordance with a predetermined density and quan livery. tity oi’ said component. 6. In a ?uid dispensing system, a source of ‘2. In ,a ?uid dispensing system. segregator, ?uid supply, suction means for pumping the ?uid vmeans ior effecting an automatic segregation oi’ from said source through said system, segregator ?uids oi di?'erent speci?c gravities, a source of. means interposed between said source and said, ?uid supply.__?uid impelling means to feed said suction means, said last-mentioned means com ‘?uids from said source to said segregator means,v prising a, ?oat chamber having a discharge out 75 ?uid metering means and ?uid density responsive let, a ?oat-operated valve mechanism disposed 76 ?uids oi‘ diii'e'rent speci?c gravities, a source of ' determined value. 2,120,886 within said ?oat chamber operating to e?ect a ‘ through said apparatus, ?uid metering means, gravitational segregation and isolation of the ?uid density responsive means for effecting a ?uid of heavier speci?c gravity from the ?uids of separate segregation of the residual ?uids received lighter speci?c gravity prior to the passage of from said segregator means, said ?uid density said lighter ?uids through said discharge outlet, means being interposed betweensaid suction ?uid metering means, and‘ ?uid density respon means and metering means and operating to sive means communicatively connected with said control the .passage of a ?uid having a speci?c segregator means for effecting a separate segre gravity lighter than the heavier ?uid isolated in gation of the residual ?uids received from said‘ said segregator means but heavier than the segregator, said ?uid density responsive means lighter of the residual ?uids into said metering 10 comprising a ?uid storing chamber, a ?oat-op means, and valve means associated with said erated valve mechanism mounted in said storing ?uid density responsive means for limiting the chamber and interposed between said suction ' pressure of the ?uids therein to a pre-determined means and said ?uid metering means operating 15 to control the passage of a ?uid into said meter ing means having a speci?c gravity that is lighter than the heavier liquid isolated in said segre gator means but heavier than the lighter liquid ' received in said ?uid storing chamber.‘ .20 7. In a ?uid dispensing apparatus, segregator means adapted for isolating a ?uid of heavier speci?c gravity from ?uids of lighter speci?c gravity ?owing through said segregator from a source of supply, suction means for withdrawing 2.5 ?uid from said source and for ?owing said ?uid value. ‘ 10. In a ?uid dispensing apparatus; segregator 15 means adapted for isolating a ?uid of heavier speci?c gravity from ?uids of lighter specific gravity ?owing _.through said segregator from a source of supply, suction means for withdraw ing the ?uid from said source and for ?owing 20 said ?uid through said apparatus, ?uid metering means, ?uid density responsive means opera tively connected to said suction means for effect ing a separate segregation of the residual ?uids received from said segregator means, said ?uid 25 through said apparatus, ?uid‘ metering means, ' density responsive means comprising a ?uid stor ?uid density responsive means interposed between said suction means and ?uid metering means for effecting a separate segregation of the residual 30 ?uids received from said segregator means and operating to control the passage of a ?uid having a speci?c gravity lighter than the heavier ?uid isolated in said segregator means but heavier than the lighter of the residual ?uids into said meter; 35 ing means, and means associated with said density responsive means for effecting a segregation of the heavier ?uid from said segregator means when said suction means is rendered inoperative by the e?ects of ‘said heavier ?uid _in said segre gator. - > 8. In a ?uid dispensing apparatus-segregator means comprising. a ?oat chamber having a dis charge outlet, a ?oat-operated valve mechanism disposed within said ?oat chamber adapted for ' effecting a gravitational isolation of the ?uid of' heavier speci?c gravity ?owing through said seg regator from a source of supply, suction means for pumping said ?uid from said source and for discharging the lighter ?uids, ?uid metering means, ?uid density responsive means disposed above said segregator means and communica } tively connected with and disposed between said‘ - metering means and said suction means for ef~ fecting a separate segregation of the residual ?uids received from said segregator .means. said density responsive means comprising a ?uid stor ing chamber, a ?oat-operated valve mechanism disposed in said storing chamber for controlling the passage of the desired of said residual ?uids into said metering means, and means for e?ect ing a discharge of the ?uid of heavier speci?c gravity from said segregator means comprising a valve device associated with said density respon 65 ing chamber, a ?oat-operated valve mechanism disposed in said storing chamber and interposed between said ?uid impelling means and said metering means,‘ and provided with an inlet and two discharge outlets for controlling the passage of the desired of said residual ?uids through one of said outlets intosaid metering means, and valve means operable in a predetermined posi tion of the ?oat in said ?uid density responsive ‘ means for preventing the ?ow of ?uid through said other outlet when the pressure in said chamber is below a pre-determined maximum value. ' > v 11‘. In a liquid segregating system, a source 40 of liquid supply, at least two liquid segregator devices communicatively connected with one an-' other and with said source of supply, in series relation, and means for supplying said liquid to said segregator devices from said source of 45 supply, each of said segregator devices serving to" segregate from said supplied liquid. a liquid of given density. the density of the liquid segre gated by one of said devices being different from . ' ‘50 12. In a ?uid segregating system such as de that segregated by another. ?ned in claim 1 wherein one of said segregators automatically. controls the supply of ?uid to a subsequent segregator when the ?uid of prede termined density segregated thereby. exceeds “a 55 given quantity of supply in the?uid supplied to said ?rst mentioned segregator device and another of said segregator devices automatically serves to prevent the segregation of the ?uid of predetermined density to be segregated there 60 by when. the quantity of supply .of ‘said, prey, determined ?uid density in the ?uid supplied sive means and a by-pass interconnecting said ' to said second mentioned‘segregation device is‘ storing chamber and segregator chamber and op less than a given quantity of supply. 13. In a ?uid segregating system such as de-: 65 ?ned in claim 1 wherein the segregator that rendered inoperative by the e?ects of said heavier is initially disposed with respect to the source of supply automatically shuts off the supply of ?uid in saiéi segregator. 9. In a uid dispensing apparatus, segregator ?uid to a subsequent segregator when the ?uid means adapted for isolating a ?uid of heavier of predetermined density segregated thereby ex 70 speci?c gravity from ?uids of lighter speci?c ceeds a given quantity of supply in the supplied gravity ?owing through said segregator from a ' ?uid and said' subsequent segregator device auto source of supply, suction means for withdrawing matically serves to prevent the segregation of 75 ?uid from said source and for ?owing said ?uids the ?uid of predetermined ?uid density in said 75 erating to overcome the suction effects in said lower ?oat chamber when said suction means is 6 2, 120,266 supply ?uid is less than a given quantity of supply. 14. In a ?uid segregating system, a source of ?uid supply, a segregator device for segregating a fluid of given density, a further segregator device for segregating a ?uid of given density different in value than the density of the ?uid to be segregated by said ?rst mentioned device and impelling means communicatively connected 10 at its input with said ?rst mentioned segregator supply through said segregators and return in a circuitous path, each segregator device serving to. segregate from said supplied ?uid, a ?uid of given density, said segregated ?uids di?ering in density values, and means operatively connected with one of said segregators for opening or clos ing said circuitous path in accordance with a predetermined change in the quantity of supply of the ?uid to be segregated thereby. 20. In a ?uid segregating‘ system, a source of 10 device and at its output with said second men ?uid supply, at least two ?uid segregating'devices tioned segregator device for supplying ?uid‘f‘rom said .source of supply to said segregator devices. communicatively connected with one another and with said source of supply, in series relation, ' and means for forcing ?uid from said source of supply through said segregators and return in a 15 circuitous path, each segregator device serving ' to segregate from said supplied ?uid, a ?uid of 15. In a ?uid segregating system as de?ned in 15 claim 4 wherein said ?rst mentioned segregator automatically controls the supply of ?uid to the second mentioned segregator device when the quantity supply of the ?uid of predetermined density to be segregated thereby exceeds a given quantity of supply in the ?uid supplied to said first mentioned segregator device. 16. In a ?uid segregating system such as de ?ned in claim 4 wherein the second mentioned segregator device automatically serves to pre 25 vent the segregation of the ?uid of predetermined density to be segregated thereby when the quan tity of supply of the ?uid of predetermined den sity in' the ?uid supplied to said second men tioned segregator device is less than a given rate of supply. ' 1'7. In a ?uid segregating system, a source of ?uid supply, at least two ?uid segregating devices communicatively connected with one' another and given density, said segregated ?uids differing in density values, and means operatively connected with one of said segregators for opening or clos ing said circuitous path in accordance with a predetermined change in the ?uid pressure in said segregator. ' _ 20' _ 21. In a ?uid segregating system, a source of ?uid supply, at least two ?uid segregating devices communicatively connected with one another and with said source of supply, in series relation, and means for forcing ?uid from said source of sup ply through said segregators and return in a cir cuitous path, each segregator device serving to 30 segregate from said supplied ?uid, a ?uid of given density, said segregated ?uids di?ering in density values, and means operatiyely con with said source of supply, in series relation, and , nected with a subsequent segregator for opening means for forcing ?uid from said source of sup a or closing said circuitous path in accordance with ply through said segregators and return in a a predetermined change in the quantity of supply circuitous path, each segregatordevice serving of the ?uid to be segregated thereby and in ac to segregate from said supplied ?uid, a ?uid of cordance with a predetermined change in' the given density, said segregated ?uids differing in ' ?uid pressure in said segregator. 22, In a ?uid segregating system, a source of 40 40 density value, and means automatically to pre vent the ?ow of the supplied ?uid through one ?uid supply, a segregator device for segregating a ?uid of given density, a further segregator de of said segregators when the ?uid of given den vice i'or segregating a ?uid of given density dif sity is being segregated thereby. 18. In a ?uid' segregating system, .a source of ferent in value than the density ‘of the ?uid to be ?uid supply, at least two ?uid segregating devices segregated by. said ?rst mentioned device, said communicatively connected with one another and segregator devices being constructed and ar with said source of supply, in series relation, and ranged such that the static pressure of the liquid head in the latter segregator device is greater means for forcing ?uid from said source of sup ply through said segregators and return in a cir than that of the former, suction pump means cuitous path, each segregator device serving to communicatively connected at its input with said segregate from said supplied ?uid, a ?uid of ?rst mentioned segregator device and at its out given density, said segregated ?uidsdi?erlng in put with said second'mentioned‘segregator de density value, and means automatically to pre--, vent the ?ow of the supplied ?uid through, one of said segregators when the ?uid of given den sity is being segregated thereby, pressure valve vice for supplying ?uid from said source to said segregator devices, means for automatically shut ting of! the supply of ?uid to the second men— 55 tioned segregator device when the rate of supply of the ?uid to be segregated by said ?rst men tioned segregator exceeds a given rate of supply thereof including ‘a suction controlled valve at the inlet side of said pump, and means cooperat » relief means normally preventing the ?ow of ?uid through said segregator when said ?uid is being segregated thereby. 19. In a ?uid segregating system, a source of fluid supply, at least two ?uid segregating devices 'ing with said second mentioned segregator for communicatively connected with one another opening said valve by breaking the partial vac ~ and with said source of supply, in-series relation, uum when the pump is inoperative. and means for forcing ?uid from said source of ‘ . DAVID SANH‘RAN.