Патент USA US2404258код для вставки
July 16,1, 1946. R. R. TRExLER 2,404,258 » ' LIQUID nl_sPENsING APPARATUS Filed Dec'. 9, 1942 3 Sheets-Sheet l _ , July 16, 1946. R. R. .TREXLE'R ' _ ' -'2,404,258 LIQUID -DIsPENsINGf APPARATUS Filed Dec. 9,_1942 'i @- 1 4ä 5 Sheets-Sheet 2 July 16, 1946. R. R. TREXLER LIQUID DISPENSING APPARATUS 'JZ-fa _ v Filed Dec. 9, ’1942 l 2,404,258 ` v _ :svsheets-sh'ee? s I Patented July 16, 1946 l 2,404,258 UNITED STATES PATEN T oFFlci-z 2,404,258 LIQUID DISPENSING APPARATUS Richard R. Trexler, Evanston, Ill. _ Application December 9, 1942, Serial No. 468,363 ` 12 Claims. 1 (01.'222-728) This invention relates to fluid dispensing appa- , ratus, and particularly to apparatus adapted to dispense liquids in measured quantities while si -multaneously calculating the cost thereof at a given or selected cost per unit of volume. It is an object of the invention to provide a fluid dispensing apparatusvof improved construc ' tion and operating characteristics, and more par ticularly to provide improved means for. calcu lating the cost of the fluid orliquid dispensed. In accordance with the principles of the inven tion cost calculating fluidvariator means is dis posed directly in the flow line _of the dispensed fluid, said means controlling the flow of fluid Within a selected portion ofthe line in a manner so as to enable the accurate costv calculation thereof at variable and selected prices per unit of measure. _ f ì ` `apr'aaratus housingl being broken awayltoïbetter illustrate certain of the structuralelements; - Fig. 2 is a partial, sideand sectionalview; of - the apparatus shown in Fig. 1, and takenon the line 2_,2 thereof; Fig. 3 is arhorizontal sectional view through the apparatus of Fig-_1, on the line 3_3 thereof; Fig. `4 isa detail horizontal sectional View, on *an enlarged scale, of the fluid l_variator structure, and takenon the lines 4-_4as lindicated in Fig.~1 andFig, 5; _ `__ ._ Fig. 5 is a detail vertical sectional view o'f'the fluid Figjöis variatoron a detail theAsectional line 5_-5,view of Fig. of a4;"control ` valve‘structure optionally butl preferably forming a part ofythestructure of Fig. 1; ' ` ¿ Fig. 7A is a detail sectional view of a portion of the valve Vmechanism of. Fig. 6, on theline 1_1 Further objects of the invention are to provide y `_‘ __, _ _' cost lcalculating means, in apparatus of the type 20 thereof; -` Fig. 8 isla sectionalview similar to Fig. 4, but stated, which may be more economically con illustrating a modiñedform of ñuid variator structed, and which is accurate in operation and _structurer _' __ __ ,_ n _ readily adjustable to effect cost calculations at variable and selected unit prices. ` A ' _ ' Fig. 9 is a partial ~detail view of a portion-_of _¿ , , . ’ lf@ ' Another object of the invention, in one of its 25 the apparatuspf Fig_f8; , 1 Fig. m10/ -is a' View, also similar Vtolï’ig. .4, but aspects, is to provide in a, iluid variator structure, showing another modified form of fluid Avariat'or means whereby the adjustment of a single mem structure, and takenA on âthe line IU-IU of Fig. ber will effect the corresponding accurate adjust ment of the fluid variator mechanism throughout ` Fig. 11k is a'partial View its selected range of price adjustment. 30 ratus, utilizing the fluid of a l,dispensing appa; A still further object of the invention is to pro variator structureV of vide for the cost calculation of the iiuid dispensed, Fig. 10; and ' _ _ _ ` ,I ~ Y Fig. 12 isa view of a modified and more simpli fied formvof control valve, which may be optional ly-used Yin> substitution Vfor thev 4control valver of mechanism of the meters provided, and without 35 Fig. 6. ' _' Y ‘ the provision of mechanical variator means or other cumbersome mechanism. Referring more rspecifically to the drawings, _ Another object of the` invention is to provide in apparatus of the type stated, for a minimum load upon the meter i to facilitate accurate meter operation, and also to enable the use of lessy expensive and more read ily lconstructed metering units. y ' Various other objects, advantages and features of the invention will be apparent‘from the fol lowing specification when taken in connection with the accompanying drawings, wherein cer tain preferred embodiments of the invention are set forth for purposes of illustration'. ‘ ~ In the drawings, wherein'like reference numer als refer to like parts throughout: " Fig._.1 is a general assembly'view of a liquid dispensing apparatus constructed in accordance zwiththe principles of the invention, parts of the 1 and first to the embodiment of the invention illus trated in Figs., 1 to 7 inclusive, in Fig. 1, the dis-_ pensing apparatus illustrated may be of the gene eral type lOrdinarily provided for the dispensing of _gasoline »for automotive vehicle use, although it is to be understood thatthe invention in its various aspects isv not limited to apparatus of this character. ',I‘h'e dispensing apparatus illus-, trated comprises an upstanding housing l0 adapt ed to be associated with an underground storage tank I l containing the liquid, l2 forming the sup _ply source for thedispensing ' apparatus. VA dispensing pump I3 which maybe of any conventional type,V and provided'with a by-pass valvev or the like, draws the liquid l2 from .the underground tank into Vthe pump by means of a pump inlet pipe Ifli. The l,pump is drivenv by an electric _motor Vor other suitable <prime ?mover -| 5 through f' ‘the intermediary of a belt I6 and 2,404,258 4 3 :associated pulleys I1 and I8. The motor is con trolled by a switch I9 actuated by a'rod 20 con 54, Fig. 5, held in position by screws 55. This screen effects an even distribution of the liquid nected Vto the nozzle support 2| which is piv- ' received into the fluid variator from the pipe 29, causing the fluid to tend to- move upwardly through the variator with substantially uniform velocity over its entire horizontal cross sectional otally mounted upon the housing I8 and is adapt ed to be pivoted upwardly when the dispensing nozzle 22 is removed therefrom. . The lower casing portion 52 carries a fine screen The arrange ment is such that when the nozzle support is piv oted upwardly, as stated, switch I9 is operated ' to energize the driving motor l5. The dispensing pump' I3 propels the dispensed area. l As best shown in Figs, 4 and 5, the upper casing portion 5I vof the fluid variator is` provided with a'face plate portion .56; 'forming aY horizontally ' liquid through an outlet, pipe v25 'into an- 'airand extending barrier across the entire casing struc vapor eliminator 25 which may be of>> conven V tional construction. An outlet pipe 21 leads fromy the air eliminator to a volume metering device> ture. Formed integral with the plate 55 is a vertically extending baffle wall 51, this baffle wall z effecting a separation of the upper casing portion 28. As illustrated, the meter 28,l isk ofthe „nutat 5I intoA twoE separated chambers 58 and 59 asso-4 ciated, respectively, with the pipe 3| leading to the cost meter'Sí-l,- and the pipe 32. The baille ing plate type, the construction of_ whichwill-„be „ well understood by those familiar withthe art. However, it is to be understood that ‘any’ sort- - .wall 51-is provided with three enlarged bearing of conventional meter may be employed.A Anutat’ bosses 89, 6I and 62, at preselected spaced'points ing plate type meter has been illustrated because 20 along its length, andthe plateëâ is provided with in. accordance with the. principles. of the present arcuate slotsv t3V andsß4rconcentric with the. boss ' inventionLthe. reglster driving. forces required of the meter are minimized,` enabling the use 0f a ‘50,k with arcuate` slots 65. and 65, concentric with the` boss 5I, and with arcuatel slots 6_1 andg68, concentric with` the boss 5,2. Theends` of these as shown. As will be understood, the meter may 25 arcuate slots projectup to but not through the . A, be provided with suitable Calibrating means, to plane of the. vertically disposed baffle wall 51. relatively’li‘ght and economical type meter, such insure its accuracy of measurement. In other words, theadjacent ends of the slots are From the meter 28 the dispensed liquid passes spacedv apart by a distancefequalto the thickness through an outletïpipe 29 into a. fluid variator 38, .the construction` of which. will be hereinafter described. Within the fluid variatorthe fluid or liquid .flow may be divided, and passes there 30 of thebafñe wall 51.. ' « rlîhe separator plate or wall 56 is provided with three. circular raised or embossed" portions 19 throughA which the pairs of slots are cut, whereby from .Y through., apair ofïparallel pipes vor con .to provide bearing surfaces for engagement by duits4 3l 'and_.3.2.. AÍcost metering device 33 is the variator discs presently` to be described. "'associatedrwith'the. pipe 3|., to. effect the meas 35 There. are. three of thesel embossed or raised Vpor urement of liquider fluid passing therethrough. tions 10, one` for each pair-of slots, and each of From the meter33l the vfluid measured thereby the embossed portions forms a complete; circle passes Athrough an outlet pipe 34» joining the-fluid whereby tov provide complete circular and fluid from the pipe 32 within a T connection 35. The tight bearing surfacesl for the variator discs. 40 combined ñuids from both pipes 3| and 32 flow The pipesy orv conduits 3l and-32’ are indicated' by outwardly through the pipe'36to a sightl gauge v.dot and dash lines in Fig.. 4 to diagrammatically 31, and then to the usual flexible hose 38¿ and dis show the vlocation of these outlet pipes, dot and pensing .nozzle 22 providedwith a` manual control dash lines being used. to indicatel that the pipes ' Valve 39. are >physically arrangedA in the,v structure, above As illustrated.. the. cost meter 33,» is `also of the 45 the section line alongj which Fig. 4 is taken.. nutating plate type, as. in» the case- of the vol Referring furtherto-Figs. 4 and;5, three varia urne meter 28, for the reasons-heretofore pointed tor discs as indicated at,13, l114. and 1-5 are associ out'. However, as in the case of the volume meter, ated, respectively, with> the slot pairs (i3-«64, it is.,to. be. understood. that anyy conventional.` type 65-68 and 61-7-58;` these». discs being-.keyed or ~ Íof meterf may». if desired, be» used; A control valve structure as indicated at 48, mayfalsof be optionally provisiled` in- the pipe-„32, thus; dividing the, pipe ï3,2> into-separate sections 32' and 32.". The_purpose ancL function of this control~ valve structure will also be later described. ' l otherwise ñxed- tozthe'- ends of shafts 15, 1j1 and 18 journaled in the- bearing bosses 853,61 and 62. Themanner in which the disc, 14‘ is keyed to the endof its associated shaft "I1 is shown in Fig. 5', the connection comprising a key 89 anda nut 8l Ul Ul 'lïhevolume meter 2.8.'»is- arranged- toY drive a shaft ,4.3. suitably. connectedV by- driveconnections 4345.120 drive. a volumeregister45 provided at the upper front. portion ofthe housing.- Similarly the. cost. meter 3.3,fis1 arranged to drive a shaft 46 connectedby means. of drive- connectionsl 41 to drive a cost. register 48. As shown inFig. 2„the volumeand ,cost registers may. be duplicated on the opposite. face of` the apparatus, as indicated at. l49,` the/se: registers also Vbeing drivingly' con ' nect'edtothelmeter shafts 4,3.andu46~,.for simul tanleous, operation Vwith the registers 45 and> 48. "The fluid-` variator.v structures, and theirv ar rangement .with the other elementsof the system, are showninFigs. 1.„ 2, 3,4 and; 5.. The-duid »variatorggenerally indic'atedby the.A numeral 30 irrFigs.` 2„3, 4 and. 5„1comprisesa;two-partcas ing or. housing., viz., Vanupper housineportíon 5| kand a lower housingportionâlflanged andi con- V nect'ed V together. by." 'meansof bolts .or screws 53. ' threaded onto the end ofthe shaft for holding the disc in position. Similar-,mounting means may be employed for. securing the other discs. 13 and 15, respectively, onto their associated shafts 15 and 18. As also best shown in Fig. 5, each of the variator discs is preferably provided with a bearing washer as shown at 82, of neoprene or the ` like, for fluid-'tight bearing engagement against the associated plate boss 10. A compression _ springf83,‘Fig. 5, bearing at its upper end against a collar 84 and at its lo-wer end against a packing 'gland member 85 maintains thewashers 82 and bosses 19 in fluid-tight bearing engagement. The particular spring 83 illustrated in Fig. 5 is associated with the shaft 11 and its variator disc 14, but it is tobeunderstood that similar means is provided foreach of the variator disc struc tures. The collar 84~is adjustable on the' shaft 1»1 lay-means of .aset screw.r 8S `whereby to-properly control thev compression of the spring 83:` Also, 2,404,258` 5 6 the' packing glandmember 85 is threaded into a boss 81 providedas a partvof thev casing 5`|,¿where-> by >to effect the compression vof a packing'88,vpre- shown,- are provided 'betweenfthe “cents" chain t »|08 and the “cents” registeri'dials, and between the “tenths” chain |09 and;the-“tenthsîfregister -`venting liquid'leakage alon'g‘ the shaft 11; ‘ As indicated, similar means >is provided for each of the three Variatorvdisc shafts._ ' - _Disc 13,r which is the “tens” variator disc, is provided with nine openings 90. Disc 14, which Ais the “units” variator disc, is provided with nine openings 9| and disc‘15, which is the "tenths’f variator disc, is provided with nine openings 92. Cn dials. Accordingly, ‘it will be seen that selective adjustment of the knobs |02, 99 and |03 effects the corresponding adjustment of the `variator discs, `and the simultaneous adjustment of Athe dials of the price per gallon registers. , To insure uniformity of action vwithin the cas 10 ing of theiluid variator, and to insure uniformity of operation of the Vvariator discholes von either"l AThe openings or holes `9| _in disc 1||Í are of such side of the baille wall 51,v in lcertain instances it size or area that they will permit the passage of may be desirable to insure equalized pressure con ten times as much liquid as will pass through the holes 92 of the disc 15, at lthe same fluid or liquid 15 ditions within the chambers 58 and 59. One preferred arrangement to effect such result `is pressures. Similarly, the holes 90 in disc 13 are >illustrated in Figs. 6 and 7. As shown,sthe pipe of such size that they will permit the passage of or conduit 3| leading to the meter 33 is provided tentimes as much liquid as the holes 9|, or one with a T fitting ||6 to the open end of which is , hundred times as much as the vholes 92. Each secured a plate |I1 forming onel of the plate ele of the Variator discs is independently rotatably ments of a diaphragm structure generally indi adjustable, the arrangement being such that its` cated by the numeral || 8. -The plate ||1r coop nine holes may be exclusively on one side of .the erates with another plate || 9, the two v`plates baille wall 51, or on the other side thereof, ordi being peripherally secured together by bolts `|20 -vided in any desired proportion. Those holes whichl are set to discharge into Vthe variator 25 to thereby grip an interposed flexible diaphragm element |2| of neoprene or the like. . , H -. chamber 58 transmit fluid or liquid which vwill Interposed in the pipe 32, between the pipe sec be measured »by the cost meter 33, which is di . tions 32 and 32’ is a fìtting‘comprisingv a mainrectly connected to the cost register. AAccord-` body |22 and an auxiliary body or head portion ingly, it will be seen that the setting of the varia tor discs Will determine the proportion of the fluid 30 |23 flanged and secured _to the main body- |22‘by securing bolts | 21|.` A plateV member ;| 25 p'r„o~` or» liquid which will be measured by the meter vided with openings for the passage of fluidA is 33, in relation to that whichis by-passed through held in position by the fitting head |23.v A sec the pipe 32. Adjustment of the discs in accord ond` plate member |26, also provided with open’-y ' ance with the selected unit price per unit of vol umewill therefore effect the proper actuation of 35 ings for the passage of fluid, is laterallyshift able within the conduit by means yof a link `>,|21 theY cost meter 33 and the f associated directly pivotally mounted upon a cross bar |28 formed connected cost register, in a `manner to cause the as a part of the main f'lttingbody |22. The link cost register to accumulate> and register the |21 is pivotally connected to and operated by- Ta proper cost of the dispensed fluid at the selected unit price per unit of volume. For example, in 40 link |29, the end of which is anchored to> the diaphragm member |2|. It is tobeunderstood Fig.y 4 the variator discs are set to compute the that the fitting body |22 is threadedly'connected dispensed liquid at a unit price per gallon of `>24.3 to the plate ||9 of the diaphragm device ina cents, the unit price indicated on the “price per gallon” register -95, Fig. l. The variator illus-A fluid-tight threaded connection. 'l - ‘ Normally, when the structure is 'in operation, trated can effect the .calculation of costs at unit 45 the openings inthe plates |25 and |26 are suf prices fromone-tenth of a cent per gallon to 99.9 ficiently out of alinement or -out of phase so as cents per gallon, although in ordinary usage the to impart a slight resistance to fluid flow _within the conduit 32-32’, equalto the pressure [drop The means for effecting the adjustments of- the 50 normally occurring `within the cost meter ,33, thereby maintaining. equal pressure conditions in discs are best shown in Figs. 1, 2, 3 and 5. As shown in Fig. 5, the upper end of shaft 11 is the variator chambers 58 and 59. In' the event provided with a bevel gearl 96 meshing witha that the` cost meter should encounter increased resistance, pressure within the pipe 3| would tend bevel gear 91 Vfixed to a shaft 98 which shaft, as best shown in Fig. >3, projects outwardly through 55 to increase, thereby shifting `the diaphragm ele-` the side 4of the housing |0 ‘and is provided With ment |2| tothe right as seenin Fig. 6, shifting an operating knob v99. Similar means is provided the plate |28 tothe right, and thereby shifting ‘ the alined openings inthe plates |25 and |26 for each of the variator discs, the adjustment further out of phase to correspondingly increase shaft for the “tens” disc 13 being indicated at |00 in Fig. 3, and the adjustment shaft for the 60 the pressure within the »pipe 32 so as to maintain equal pressures-within the chambers V58 and v59.À “tenths” disc being indicated at |0|. Shaft |00 Conversely, if the pressure Withinpipe 3| -tendsl is provided with an operating knob |02 and shaft |0| is provided with an operating knob |03. to decrease, the plate |26'is shifted to theleft as Sprockets |04, |05 and |06 are provided, respec-Y seen in Fig. 6, moving the alined openings. in tively, on the shafts | 00, 98 and -I 0|, these sprock 65 the plates |25 and |26 further into phase to cor ets being connected by chains |01,r |08 and |09, respondingly decrease the pressure in pipe 32. Fig. 2, so as to effect the actuation of the adjust By this means equalized pressures within the variator is not called upon to effect calculation over this wide a price variation or range. . ' able dials of the price per gallon register 95 _ chambers 58 and 59 at all times-is assured. provided on the front of the housing, and also The operation of the structure kis believed tobe preferably a duplicate price per gallon register 70 clear. v As thevnozzle support 2| is raised ener--.~ ||0 on the rear housing face. y To this end the chain |01 for the “tens” shaft |00 is arranged to actuate a sprocket || | connected by means of ' chains I|2 and ||3 to the “tens dials” ofA the gizing the motor |5 by means of switch I9, pumpi3 operatesto propel fluid through thedispensf»`> , ing line. The entire volume `of liquid flow -is measured by the volume meter 28 directly con- indicators 95 and ||0. Similar connections, not 75 nected to operate `the,volume register ~,||5._-_:¿I_ri, 2,404,258 'thefñuidîvariator`30 the fluid is divided in accord' this-instance provided with slots |3.'|-and- |38` for ` -ance'with the desired unit price per unit of vol-` . Referringîto Fig. ll, the single shaft |40 upon which the disc `|35 is carried, is in this instance cooperation with the discslot |36. uma,` part' of the flow passing through the pipe 3|1to‘be measured by the cost meter v33, and part ofthe flow being ley-passed aroundthe cost meterV through the pipe 32, the flows 'being combined within the iitting 35 to be thereby dispensed from ' ’ ' provided wtih a worm gear |-4| cooperating with a worm |42 secured on the end of an adjustment shaft |43. An adjustment knob» |44 is providedy on the opposite end 'of the shaft |43. A single indicator dial |45 cooperating with a fixed index the nozzle 22v in thefusual'manner. By means of thef control valve structureof Fig. 6, equalized pointer |46 is secured to the upper end of shaft pressure conditions are maintained within the 10 |40. ' , y‘fluid variator chambers 53 and 59, and by means The arrangement of the parts is suchA that as of the adjustment knobs> 99, |02 and |03, Fig.` 3, the disc slot | 36 is in position to begin the initial the variator discs may be preset so that the cost introduction of fluid into the chamber 58h, the calculation takes place at the selected price per zero indication is exhibited on the dial‘ |45' in gallon. .. l alinement with the fixed frame orhousing point-V In accordancewith the structure provided, the er |45. As the dial |415 reaches a position to ' , meters-are subjected to a. minimum driving load. indicate the dispensing of the liquid, at one Meter'v inertia: is thus minimized and accuracy is tenth cent per gallon, the slot |36 will be in p07 promoted. Also, meters of'lower cost type may 20 sition to deliver one part of the dispensed fluid b‘e'ßused’.r No adjustment mechanism of the meter isfprovidedzfor varying. or modifying the displace mentor operatingv characteristics in accordance with the price changes, and costly and cumber into the chamber 58h and the other nine hundred and ninety-eight parts into the chamber 59h, as will be` clear from what has heretofore been pointed out. Adjustment of the single knob |44 somer mechanical variator mechanisms> are elim inated. 25 In Fig. 8 a modified form of variator structure effects` price calculation throughout the desiredY range of adjustment, the price per gallon to which the variator is set being indicated bythe isk provided. In this instance the “tens” varia indicator structure U15-|46. ' tor disc 13a instead of .beingñprovided with large In Fig. 12 a modified form of control valve, openings as in the embodiment previously de which may be used in place of the structure scribed, is provided instead with blocks of small 30 shown in Figs. 6 and-'7, is illustrated. In this in ' openings, to yeffect the same rfunctions and pur stance the conduit 32o is provided with a spring poses. More speciñcally, the “tens” variator disc controlledv relief valve |50. More specifically, a ‘|3a- is in this instance provided with nine blocks tension spring |5| normally urges the, valve into of openings 90a, there being one hundred open seated `position against the fluid flow as indi ings or holes in each block. These holes are 35 cated by the arrow. One end of the spring is the same size asA the holes 92a in the “tenths” connected to ther valve and the other end of the disc 15a. Similarly, the “cents” disc 14a. is pro spring is adapted to be anchored to 4and wrapped vided Ywith nine blocks of holes Sla, there being around a rotatable adjustment screw |52. Rota ten holesin each block, and theholes being of tion of the adjustment screw |52 varies the ten. 40 the same size as the holes 92a of the disc 15a. sion of the spring |5I, thusV varying the pressure Accordingly, it> will be seen that each blockv of Y drop which will be effected by the passage of holes in the disc '|4a`will eiîectA the passage of the iluid through the relief valve. A cap |53 cov ten times the amount of ñuid which will pass ers the end of the adjustment screw |52, thus pre Vthrough a given hole 92a, whereas each block of venting unauthorized operation thereof. In ac holes 90a of the disc 13a will effect the passage of cordance with this Áform of structure, the valve one >hundredv times the‘ amount of fluid> as `one hole 92a, under the same pressure conditions. Accordingly, it will vbe seen that the function and -operation of the .variator thus provided is similar to that described` in connection with Fig. 4»except that in this instance all of the holes or openings within the variator> discs are of ithe same size insuring absolute uniformity ofoper- ' ation, withv respect to each other, under all. pos sible;varying conditions of pressure. and rates of fluid flow within the dispensing line. In Fig. 9 the detail of the arrangement ofv the holes in the l `diseisa isiuustrated. In Figs. 10'and 11 a variator arrangement is illustrated’wherein a single variator disc is em-v ployed to effect price changes throughout the de. sired price range. In this instance a single var iator disc |35 is provided, Said disc having a con ` tinuous concentric slot |36 of uniform section formed therein. As this slot is progressively movedl from one side to the other of the baille Wall 51D, it will be seen that a progressively in- ~ creasing or decreasing amount of fluid, as the case may be, is transmitted to the pipe line 3io to be measured by the cost meter arranged there |50 is adjusted to eiTect a pressure drop corre spending to the resistance encountered by the cost meter in its normal operation, thus main taining equalized pressures Within the outlet chambers Of the fluid variator. ' It is to be understood that rwhile the opening or openings in the variator disc or discs inthe severalembodiments operate as flow control ori ñces, the collective area thereof isY in each in stance sufliciently large so as to proudce nosub stantial impediment to _the liquid flow there through even when the pump I3 yis delivering at its main'mum dispensing rate. It will alsov be un derstood that the openings in the discs |25, |26, Fig. 6, when> in full alignment, and the action of the valve |50, Fig. l2, when the spring |5I is'at a minimum tension, are such as to produce no substantial pressure drop even when the pipe 32 " or'the pipe 32e, as the case may be, is transmit’ ting substantially lthe entire liquid flow. It is obvious that various changes maybe made in the speciiic embodiments of the invention set forth for purposes of illustration without depart ing from the spirit of the invention. The in vention is accordingly not to~be limited to the in, whereby to effect variable cost calculations in accordance with the principles of the inven specific embodiments shown and described', but tion. It is to be understood that the plate 56h, in the embodiments previously described, is in 1. Fluid.A dispensing apparatus comprisingladis-~ only as indicated in the following claims. ¿ The invention is hereby claimed as follows; 2,404,258 pensing-line adapted to be connected to a source l 10 , iiuid dispensed per unitfof volume for controlling the iiuid- iiow to the meter to thereby controlthe of iiuid supply, said dispensing line terminating in a dispensing outlet, metering means vfor meter ing a portion of the fluid flow within the'dispens operationof the register; - i - ’ _7. Fluid dispensing apparatus comprising a dis ing line, a cost register connected to the' meter for registering the cost of the iiuid dispensed, and pensing line adapted to be connected to a source of fluid supply, said dispensing linev terminating ina dispensing Aoutlet adapted to transmit the fluid engaged means calibrated r in accordance with the unit cost of the fluid dispensed per unit entire ñuid flow within the dispensing line, a first »meter arranged inthe dispensing line for of volume for controlling said. metering means and thereby the cost register, said calibrated metering the entire dispensing fluid flow therein, means being variable in accordance with unit cost ' a register connected to said meter, a second me While the displacement of the meter remains un changed. ter connected to said dispensing line for meter ing a part only of the dispensing iiuid iiow there 2. Fluid dispensing apparatus comprising a dis pensing line adapted to be connected to a source through, a register connected to said’second me ter, and means calibrated in accordance with the function registered by at least one of said regis ters for proportioning the iiow between the of fluid supply, said dispensing line terminating in a dispensing outlet, means to propel ñuid _l through the dispensing line, cost register means meters. for registering the cost of the fluid dispensed, 8. Fluid dispensing apparatus comprising a and register operating mechanism including means calibrated in accordance with the unit cost of the ñuid dispensed per unit of volume for variably proportioning the iiuid now within a por tion of the dispensing line in respect to the total fluid flow to control the cost register. 3. Fluid dispensing apparatus comprising a dis pensing line adapted to be connected to a source of fluid supply, said dispensing line terminating dispensing .line adapted to be connected to a source of iiuid supply, said dispensing line ter minating in a dispensing outlet, a meter arranged ' , in said dispensing line for metering the entire dispensing flow therethrough, a register con nected to said meter, a portion ofJ said dispens ing line being provided with conduits connected in parallel adapted to collectively transmit the dispensing fluid flow, a second meter arranged in one of said conduits and the other of said con 30 duits being in by-pass relation to said second for registering the cost of the fluid dispensed, a Y meter, a second register connected to said second portion of said dispensing line being provided meter, and a control device in the dispensing line with conduits in parallel for collectively trans in a dispensing outlet, means to propel iiuid through the dispensing line, cost register means mitting the iiuid iiow, and register operating mechanism including means calibrated in accord- . ance with the unit cost of the iiuid dispensed per unit of volume for variably proportioning the ñow for proportioning the fluid iiow between said par allel conduits. ’ 9. A ñuid dispensing apparatus as deñned in claim 8, wherein the register connected to the ñrst meter is a volume register, and wherein the register connected to the second meter is a cost 4. Fluid dispensing apparatus comprising a dis 40 register, and wherein said control device com prises a fluid variator mechanism calibrated in pensing line adapted to be connected to a source accordance with the unit cost of the fluid dis of fluid supply, said dispensing line terminating pensed per unit of measure. in a dispensing outlet, means to propel iluid within said parallel conduits to control the cost register. ' ‘ ' through the dispensing line, cost register means for registering the cost of the fluid dispensed, and register operating mechanism including means calibrated in accordance with the unit cost of 10. Fluid dispensing apparatus comprising a dispensing line adapted to be connected to a source of fluid supply, said dispensing line ter minating in a dispensing outlet, metering means the fluid dispensed per unit of measure for con for metering the iiuid liow within the dispensing tering iiuid ñoW within the dispensing line, a comprising a single cost calibrated member. line, a cost register connected tothe metering trolling the iiuid iiow within a portion of the dispensing line in accordance With the unit cost 50 means for registering the cost of the iiuiddis pensed, and means calibrated in accordance with of the iiuid dispensed per unit of measure. the unit cost of the dispensed fluid'per unit of 5. Fluid dispensing apparatus comprising a dis measure and disposed in the dispensing line for pensing line adapted to be connected to a source controlling the fluid iiow to the meter to thereby of fluid supply, said dispensing line terminating control the cost register, said calibrated means in a dispensing outlet, a metering device for me 11. Fluid dispensing apparatus comprising a dispensing line adapted to be connected to a source of fluid supply, said dispensing line termi nected in parallel for collectively transmitting the 60 nating in a dispensing outlet, a metering device for metering fluid now within the dispensing line, dispensing fluid flow, said meter being arranged a register connected to the meter for registering in one of said conduits and the other of said con duits being in by-pass relation to the meter, and ' a function of the fluid dispensed, a portion of said dispensing line being provided with conduits means calibrated in accordance with the function connected in parallel for collectively transmit registered by the register for variably proportion ting the dispensing fluid flow, said meter being ing the iiuid iiow between said conduits to there register connected to the meter for registering a function of the fluid dispensed, a portion of said dispensing line being provided with conduits con by control the operation of theregister. 6. Fluid dispensing apparatus comprising a dis pensing line adapted to be connected to a source of fluid supply, said dispensing line terminating in a dispensing outlet, a metering device for me tering fluid flow within the dispensing line, a arranged in one of said conduits and the other of said conduits being in by-pass relation to the meter, means calibrated in accordance with the function registered by the register for variably proportioning the fluid now between said con duits to thereby control the operation of the reg ister, and pressure control means for maintain cost register connected to the imeter for register ing uniform pressure conditions within the corre ing the cost of the iiuid dispensed, and means calibrated in accordance with the unit cost of the 75 sponding portions of said parallel conduits. 12. Fluid dispensing apparatus comprising a elemente . fll - v dispensing line »adapted ¿toçfbe --connected'toqa - 4 the meter; means calibrated inwaccordanee with» the' unit »cost of the. fluid l‘dispensed per unit of source of íiuid supply», saiddispensing line'termi- Y nating in a dispensing outlei-„a >metering»dei/'ice a for-metering fluid flow withinthe'díspensing line, volume ffOr «proportieníng the-fluid :new to ¿the _ meter sto therebyïfcontról" the «operation of» the ayçost register connectedto the meter for regis tering-the cost of `the fluid dispensed, a portion of said dispensing »line >being provided with con duits-connected in parallel _for collectively trans mitting the dispensing V‘fluid-flow, said meter be 10 ing varranged at one oí-said conduits and the other ofasaid `conduits being »in ley-pass relation ¿with register, said calibrated means .being operable -to at least >double-the fluid ~-flow=to the fmeter, »and pressure control-means v»for maintaining uniform pressure conditionsîwithin corresponding portions . o'f said parallel conduits. 'SR‘ICHARD in. Trama.