US1307827A - Liquid storage and delivery apparatus - Google Patents

Description

I. IVI. IVIILLER. LIQUID STORAGE AND .DELIVERY APPARATUS.

APPLICATION FILED J'AN.9', 1918- l I.,. O'7,827R PafentedJune 24, 1919.

5 SHEETS-SHEET l.

WITNESSES I. M. MILLER. l

LIQUID STORAGE AND DELIVERY APPARATUS.

APPLICATION FILED JANI 9| IDII.. i I'utvntvd .Tune 24, IDII).

5 SHEETS--SHEE'I 2.

A o lliilxlx|lallllalni WITN ESSES JLM. MILLER.

LIQUID STORAGE AND DELIVERY APPARATUS. APPLICATION FILED IAN. 9, |918.

WITNESSES y/Mm.

mvEN-ron I zmgmm J. IVI. MILLER.

LIQUID STORAGE AND DELIVERY APPARATUS. APPLICATION FILED IML-9,1910.

1,307,827. i I PatentedJune 24,1919..

5 SHEETS-SHEET 4v.

FNS. E.

X. e l ./O/ Zg I :"/9 93 40 f .as

L I il,

4/ I I X A 9 l i F'IEJ.

WITNESSES VENTOR l. MILLER.

LIQUID-STORAGE AND DELWERY APPARATUS.

` APPLICTION FILED J'ANJQ. i918. 11,307,827, Patented June 24, 1919;

5 SHEETS-SHEET 5.

N' martin) STATES YPattern? OFFICE JOHN M. MILLER, or sEwIcKLEY, PENNSYLVANIA, AssIeNon To HEPBURN WALKER,

or sEwIcxLEY, PENNSYLVANIA.

LIQUID STORAGE AND DELIVERY APPARATUS.

Specification of Letters Patent.

Patented June 24, 1919.

' To al whom t may concern.'

params, of which improvements the following 1s aspeciication.

My invention relates to apparatus for liquid storage and delivery systems of the general type wherein a liquid is stored in a reservoir and before being sold is caused to flow into a measuring' tank from which all,

bility to such use.

'llhe vending of gasolene by means ofsuch apparatus is usually done at garages or service stations by employees. While the measuring tank, constructed as explained, protects the purchaser against short or fraudulent measure of the gasolene, in the forms of apparatus used heretofore no adequate means is provided to protect the proprietor against an `employee making sales of gasolene and withholding the purchase money.

The object of my invention is^ primarily to provide, for aliquid storage and delivery system, apparatus whichwill prevent the'de frauding ofa. proprietor by an employee. A further object( is to provide apparatus of the character described which will be simple in construction, and which may be easily and quickly operated.

ln vending apparatus and systems of the character contemplated herein, the gasolene is usually caused to flow from the storage reservoir to the measuring tank either by means of airpressure applied to the gasolene in the storage reservoir, or by means of a vacuum formed in the measuring tank or in a conduit leading thereto. ln the accompanying sheets of drawings l have shown two embodiments of my invention, one adapt` ed particularly'for 'the pressure discl1arge I of the gasolene from the storage reservoir,

opposite tdiiection.v .voir 2 by means of a4 conduit 5 there is a and the` other for thevacuum lift of the gasolene into the measuring tank.

In the drawings, Figure 1 is a diagrammatic representation of 'the various tanks, reservoirs and connecting pipes in the pres# sure system; Fig. 2 a diagrammatic representation of a compound valve used for controlling the flow of air and gasolene in the system of Fig. 1. Fig. 3 is a side View of a portion of the apparatus, part of the casing beingl indicated in Vvertical central sectlon to show the 'mechanism therein; Fig. 4 a `vertical sectional view to enlarged scale taken o-n the line IV-IVFig- 3; Fig. 5 Ya vertical sectional View taken on the line V-V Fig. 4; Fig. 6 an enlarged scale view of the central portion of Fig. 3; Fig. 7 a

. combined face and sectional view of part of the registering mechanism shown in Figs. 3,' 4 and 6, the plane of view being indicated by the broken line VII-VII, Fig. 8; Fig. 8 a plan View of the mechanism of Fig.4 7;-

Fig. 9 a. View of a detail of construction referred to hereinafter; Figi() a sectional view taken on the line X--X, Fig. 9; Fig.`

l11 al view similar to F ig. 1,'s'howing a vacu um system apparatus; andAFig. 12 a diagrmmatic representation of arcompound valve used in the apparatus of Fig 11.

Referring first to the apparatus for the pressure system, as diagrammatically represented in Fig. l, the main body of gasolene may be stored in a reservoir l, usually placed underground fo-r safety, and below which4 there is placed a suitable check valve i 4 permitting flow of the gasolene from the larger to the smaller reservoir, but preventing the flow of either' air or gasolene in the Connected to the resermeasuring tank 6 made of suitably protected glass, calibrated-and graduated to indicate units of liquid measure, such as gallons and fractions thereof, or otherwise constructed to render visible the contents thereof.- The conduit 5 is discontinuous, the main portion extending to/a controlling valve 7, and

. duit having its open end above the upper end cf the conduit 5, the two ends of these conduits being preferably so spaced vertically thatthe volume of liquid that may be vplacedl in the tank between the horizontal planes of the ends of the pipes will be live vgallons lor some other unit of measurement.

The conduit 8 leads to the valve 7 and from thence by an extension 8a to a return tank 9, the construction of which will be presently explained. The bottom of the tank 9 is connected to` a cond-uit 10 through which I gasolene may be returned to the storage reservoir. Preferably this conduit connects the tank 9 with the filling conduit 5. By such Y construction the quantity of gasolene in excess ofthe required five gallons, caused to flow into the tank 6 from the reservoir 2,

l 5*,so"th at` any desired quantity .ot gasolene,

' such tank through the dischar Thus such tank may bemore quic 1y emptiedllene and air is effected yby a single controlnot exceeding' in this instance five gallons, ma be withdrawnA from the measurin already, stated, air ressure is, 1n. this system, utilized to cause tlie gasolene to'ow from the reservoir 2 to the measuring tank l 6. One feature of my invention consists of utilizing a single source of air pressure for causing the gasolene to flow both fromthe reservoir 2 to the measurin tank 6 and from conduit'.

than if the gasolene were permitted therefrom only Preferably to flow under the action of gravity. the control of flow of gasoling element, and, .in the specific embodiment of my invention, I have shown 'a com-` pound valve for this purpose. It will, however, be'understood that,ii'1 its broader aspects, my invention is not limited to the use of a compound valve. Thel detailed Aconstruction of the valve is-'explained hereinafter. state that, -forvcon'trolling the air conduits, thevalve casing 12 is provided with suitable ports'which are in communication with various conduits, namely, an air conduit 13 leading from a source of pressure supply, an air conduit 14 extending within the conduit 8 to a point adjacent'to the top of the tank 6, a vent conduit 15 leading to the main v storage reservoir 1, and

a pressure conduit 16' leading the auxiliary storagereservoir 2. Thus, air pressure from the conduit 13 may be caused to iiow Erst through the condu1t 16 to cause gasolene to ilow from the `reservoir 2 through conduits 5V and 5t into the tank 6, and thereafter may be caused 'ratus will be explained' as bein For the present it is suilicient to to flow through the conduit 14 into the tank 6 to forcibly eject the gasolene previously delivered thereto. While the gasolene is being caused to flow into the tank 6 the air and vapors in such tank are carried by conduits -14 and 15 to the main storage reservoir 1.

Ordinarily more than-five gallons will be caused to How into the 'tank 6. each time it sold may be properly metered, and a record thereof kept, and to theA further end that gasolene may not be delivered in excess of' the amount metered and registered, the measuring 'tank is constructed to be filled each time with a constant unit volume of gasolenaand a registering device is cordinated'with the movement of the valve 7 so that each time that the valve is turned to llthe measurin tank the registering device is advanced to indicate such unit volume. The unit volume, for which the apparatus shown herein is constructed, is live. gallons, and in the subsequent description the appa- S0 COH- structed. The usual purchaser o gasolene for automobiles, and the like, obtains i t in multiples of five gallons. However, this is not always the case, and accordingly means, cordinated with the operation of the valve 7, a-re provided for measuring the volume of gasolene remainin in the tank 6, and for recording such vo ume. While the volume of gasolene thus remaining in tank 6 may be variously recorded, I- preferably provide means for turnin backward-ly the aforementioned registering ldevice in proportion to the volume of gasolene remaining in tank 6 and returned to the storage reservoir. n

-In the further description of this form of my invention, I will explain, first, the construction of the registering device specifically shown herein, together with the mechanism for measuring the volume of gasolene remaining in the tank`6 after a customer has been suppliedgand, secondly, the

detail construction and operation of thevalve 7.

As already stated, the gasolene taken into the tank 6in excess of fivey gallons flows therefrom through conduits 8 and 8lll to the return measuring tank 9. However this e2;- cess volume of gasolene flows immediately from the tank '9 in a manner presently to be explained, and isnot measured in such tank. The gasolene remaining in the tank 6 after a sale of'less than five allons is, by the rotation of the valve 7,- a so caused to flow through the conduits 5a and 8a tothe .tank 9 and is measured therein. The ccnstruction ofthe return measuring tank 9 is particularly illustrated in Figs. 3 and 5.

Wlthin the'tankthere is a float 17 secured Near the bottom of the tank 9 there is at tached a suitable valve casing 21 which communicates with the tank 9 by a port 22. A spring-pressed valve 23, attached to a rod 24 which is inclosed in a suitable pipe 25, controls communication between the lower end of the tank 9 and the conduit 10. The pipe 25 extends above the highest permissible level of gasolene in tank 9 for the purpose of making it unnecessary to pack the valve rod 24. By mechanism presently to be described, the valve rod 24 is caused to rise' by the rotation of the valve 7 so that the asolene taken into the tank 6 in excess of ve gallons may flow into the tank 9, and from thence directly lthrough the conduits 10 and 5 to the storage reservoir 2 without raising the oat v17. When the valve 7 is turned to cause the gasolene remaining in the tank 6 after a sale thereof to flow into the tank 9, the valve 23 is closedso that the float 17 is caused to rise inproportion to the volume of the gasolenein the tank 9.

With respect to the detailed construction of the bottom of the tank 9, the port 22 is placed at such elevation that the float 17 will be held in equilibrium by a body of gasolene below such port, such body of gasolene remaining in the bottom of the tank 9 after the above explained overow operation.`

Thus, after the valve 23 has been closed, but a small quantity of gasolene is required to cause the float 9 to rise to a higher level.

The valve 7 which may be turned by suitable handle or crank 26, is so constructed that it turns through one complete revolution to effect a single cycle of operation of the vending apparatus. To this valve there is attached a cam 27 adapted to move a lever 28 secured to the upper end of the valve 1401, and a hub 102 rod 24. The cam is so constructed that the valve 23 is heldl closed vduring the filling of the tank 6, open duringthe overlow operation, .closed during the return measuring operation, and open subsequently to the last mentioned operation and until the valve 7 is again. turned to lill the tank 6. The last mentioned position is indicated in Fig. 6. As

there indicated a plurality of meter disks l29 are secured to shafts 30 carried by an arm 31, pivoted to the tank 9, as at 32, and

held yieldingly in the position indicated in Fig. 6 by a spring 33. To each shaft 30 there is attached a pinion 99, a locking disk 100 provided with a laterally projecting pin rovided with a recess A103 adjacent to the pm 101. The cylindrical portion of each hub 102 fits into one of a series of recesses formed on the periphery of the locking disks 100. By such construction each left-hand shaft 30 is, `by the hub 102 on the adjacent right-hand shaft 30, held against rotation until such right-hand shaft has made oneromplete lrevolution.

One complete revolution of the right hand` disk 29, asviewed in Figs. 7 and 8, registers ten gallons, a complete revolution ofthe adjacent disk registers one hundred gallons,

and so on in multiples of tens. 'The manner of turning the right hand disk `29,both forwardly and backwardly will be presently explained. When, at the end of a complete revolutionof the right hand disk 29, the

pin 101'on the right-hand locking disk 100 en ages a tooth on the pinion 99 of the adjamt shaft 30,'th'e recess 103 ofthe right hand hub A102 will -be in aposition to permit such adjacent shaft 30 to be turned one tenth of a revolution. The rotation of'the other disks is effected in the same manner. i For advancing the registering device five gallons upon the rotation of the valve 7, such valve is provided with a sprocket wheel 34, which, through a suitable sprocket chain and system of gears, as clearly shown in Fig. 6, drives a spur gear 35 provided with a laterally projecting pin 101% This pin drives the right hand disk 29 in the manner just explained. .F or raising the arm 31 so that the pin 1018L will engage the right hand the cam 27 are such that the registering device will be advanced' five gallons during such portion of the rotation of the valve as is required to maintain open the valve 23.

Because the measuring tank 6 is .each time filled with five gallons, it is unneces'saiyto register fractions of a gallon except whenthereturn volume of gasolene is being metered and registered. Accordingly a fraction-registering disk 29B, Fig. 9, is preferably attached to a shaft 38; which through sprocket 19 attached to it, is rotated bythe oat mechanism. Preferably the reverse movement or backward turning of the register is effected by the downward movement of the oat. To such end the shaft 38 has keyed thereto a ratchet 39, and has rotatably mounted` upon it a sleeve 40 to the outer end of which the disk 29EL is attached. The

inner end of the sleeve 40 is provided with a ratchet having secured to one of its sides a pawl 42 adapted to lengage the teeth of the ratchet 39, and to the other side a pin 101b adapted to turn the right hand gear 99 of the arm31. A pawl 43 is provided for the engagementof the ratchet 41. In operation,

'as the float rises, the turning of the shaft 38 is ineffective to turn the disk. 29, because of ilo y the engagement of the ratchet 41 by the pawl 43. -However, whenthe float descends, the lratchet 39 engages'the pawl 42, and, through ratchet 41 and sleeve 40, turns 'the disk 29. It will be-understood that a complete rota- .tion of 'the shaft 38, and in consequence thereof the ratchet 4l, causes the right hand lofthe dotted line 44 controls the flow of disk 29 of arm 3 1v to' turn one tenth of a revolution.

Turning now to the construction of4 the valve 7 as 'illustrated diagrammatically in Fig., 2, the portion of the valve to the left compressed air and that to the right thereof the flow of gasolene. During one complete rotation of the valve there are ve stopping y'points'for controlling the flow of gasolene andcompressed air, as well as for controlling vent.lines and the position of the valve 23. In the subsequent description of the A valve, these five positions will be designated sitlons.

T-he flowof gasolene and compressed air, the vent lines, andthe position of the valve 23 are, for the several positions of the valve,

as zero position, and Nos. 1 2, 3 and 4 pol as follows:

. closed.

No. 2 position gasolene overflow from tank 6 to tank 9; air from source 13 to'tank v 6; valve ,23 open.

No. 3 position z-gasolene from tank 6 to delivery conduit 11; air from source 13 to tank 6;'reservoir 2 vented to reservoir 1; valve 23 closed.

No. 4 position z-gasolene from tankA 6 to tank 9'; tank 6 vented to reservoir 1; valve 23 closed.

With the foregoing synopsis of the op-eration of thevalve, its detailed construction p may be readily understood from the diagrammatic representation thereof. It will be understood, however, that in actual practice .the ports are necessarily somewhat diffently constructed than indicated in Fig. 2, the construction/ shown in this ligure being primarily for the purpose of faci itating an understanding of the operation of the valve.

Considering first the gasolene-controlling portionv of the valve, the casing thereof is v provided with two extended ports 45 and 46 communicating with the conduit 5a leading lfrom the measuring tank; with a port 47 communicating with conduit 8 for conducting overiow gasolene from Ithe measuring v tank; with ports 48,49 and 50 communicating with the conduit 8l 'leading to the return tankwith a port 51 communicating with the discharge conduit 11; and with a port lsame as that already ex conduit 64a.

from the upper 'portion o 52 communicating with'the conduit 5 extending from the'auxiliary storage reservoir 2. rIhe'valve member 7 is provided `with a continuous port having transversely disposed legs 53 and 54 connected to` each other by a longitudinally disposed portion 55, the leg 53 being adapted in the rotation of the valve to communicate successively with the valve casing ports 52, 49, 46 and 50, and the leg 54 with the valve casing ports 45, 47, 51, and 48. The valve port 53, 54, 55 is, for convenience of illustration, indicated in No.l 1 position of tlie valve, affording communication between the ports 45 and 52 for permitting gasolene to flow from reservoir 2 to tank 6. In No. 2 position the valve port a'ords communication between tlie casing ports 47 and 49 for permitting overfiow through the pipe 8 to the return tank 9; in N o. 3 position between the casing ports `46 and 51 for discharging gasolene from the tank 8 through the discharge conduit 11; in No. 4 position between the casing ports 46 and 48 for returning the unsold gasoleiie to the return tank 9; and in zero position between the riorts 50 and 45 for further permittin the flow from the measuring tank 6 to the return tank 9.

For controlling the flow of compressed air and the venting of the tanks and reservoirs, the valve casing 12 is provided with a port 56 communicating with the vent line 15 leading to the reservoir 1; ,with a port 57 communicating through conduit 16 with the auxiliary storage reservoir 2; with a port 58 communicating through conduit 14 with the measuring tank 6- and with a port 59 communicating through conduit 13 with the source of air pressure supply. The rota- Itable valve 7 is provided with longitudinally disposed ports 60 and'61,"adapted to afford communication between theseveral valve casing` ports in the manner clearly indicated in the drawing.

From the foregoing synopsis of the five positions of the valve 7, and4 from the de tailed explanation of the gasolene controlling portion ofthe valve, the operation of the air-controllingV portion will be readily understood.

Referring now to the form of apparatus illustrated in Figs. lland 12, wherein, as

already explained, the gasolene is drawn` into the measuring tan by means of a vacuum formed therein, the apparatus, as far as concerns the construction of the measuring tank, the return tank, the indicator device, and the float mechanism,

plained. In this embodiment of my invention, a single storagereservoir 63 is connected, by means of a, conduit 64, to a valve, 65, which in turn is connected to a measuring tank 66 by a illin An overflow fpi t may be the e 67 exten s i e measuring tank 66 to the valve 65 and from such valve a conduit 68 extends to a return tank 69. The valve 65 is also connectedto a delivery conduit 70. Furthermore, a conduit 71, controlled by a valve 72 (corresponding to the valve 23 of Figs. 1 and 5), extends from the duit 74, and thedischarge side to such valve by a conduit 75. Leading fromthis valve there is also a conduit 76 extending to the upper' portion of the measuring tank' 66, and a conduit 77 extending to the return measuring tank 69.

At one end of'the rotatable valve 65 a suitable make-and-break device 79 is provided for controlling the electric current supply through the lmotor 95 forv operating the air-pump 73. Also, as in'the rst described Jform of my invention, the valve 72 is, throu h a rod 80, controlled by the rotation of t .e valve 65.

By connectin both the suction and discharge sides o the air-pump 73 with the valve 65, the vapors formed 1n the measur ing tank 66, while such tank is being filled, may be conducted to the return tank 69 wherein they may be condensedand returned to the storage reservoir 63. Also, the air pump may be used for compressing air which may be led to the measuring tank 66 i'o facilitate the discharge of' gasolene thererom.

The valve and its casingl 81 are diagrammatically represented in Fi 12 in a manner similar to the valve of Fig 2. uThe portion of the valve to the left of the dotand-dash line 8 2 controls the flow through the air pressure and .suction conduits, while that to the ri ht thereof controls the flow. of gasolene. n one complete turning of the valve there are -ve stopping points for controlling iow through the gasolene and air j conduits, and for operating the circuit make.- and-break mechanism 79 and the valve 72. rlhe lines of flow communication through the several conduits, the operation of the motor 95, andthe position of the Valve 72 are, for the several positions of the valve 65 as follows:

Zero position z-gasolene from tank 66 to tank 69; air pressure conduits to Stank 6.6; motor idle; valve 72 open.

No. 1 position gasolene from reservoir 63 to tank 66; suction from tank 66; pressure to tank 69; motor running; valve 72 closed. f

No. 2 position :#gasolene overiow from tank 66 to tank 69; air pressureto tank 66; suction from tank 69; motor running; Valve 72 open.

- ,ther explanation.

No. 3 position :s-gasolene from tank 66 to delivery conduit 70; air pressure t0 tank66; suction from tank 69; motor running; valve 72 closed.

No. 4 position gasolene from tank'66 to tank 69; air pressure to tank 66; Asuction from tank 69; `motor running; valve 72 closed. l

The several ports in thevalve 65 and casing 81 to the right of the line 82, which ports. control the flowv of gasolene, are the same as lthe corresponding part of the valve shown in Fig. 2, and hence require no fur- For controlling flow through the suction and air conduits the valve casing 81 is provided with an annular port 83, communicatin with the conduit 76 .leading to the measl uring tank 66; with a port 84` communicat- .ing with the conduit 75 from the discharge' side of the air pump; with a port communica-ting with the conduit 74 leadin from the suction side of the air pump; an with a' port 86 communicating with the conduit 77 leading to the return tank 69. The valve 65 is provided with longitudinallyl disposed ports 87 affording communication between the valve port 83 and ports 84 and 85; and with the ports 88, 89, and 91 aording communication between the valve casing port 86 and ports 84 and 85. From the detailed description of the valve of Fig. 2, and from the foregoing synopsis of the valve of Fig. 12, the operation of this portion of the latter valvev may be readily understood A'without a detaile explanation thereof, it

being understood that the relative. positions of the ports shown in the drawing is for No. 1 yposition of the valve.

Detailefd descriptions ofthe operation of .the several elements of the apparatus which I have provided have been made in connection with the`description of the construction of such elements.l It remains only to describe the general operation of the apparatus and system in its attainment oir' the object of my invention.

In both forms of the apparatus disclosed herein, the turning of the' valve-operating element to cause gasolene to flow from the storage reservoir to the measuring tank advances the indicator mechanism, the desired unit volume,A in this instance ve gallons. ln the next step of the operation the volume of gasolenetaken into the measuring tank in excess of five gallons iiows into the return tank, the `valve controlling the flow from the return tank being open so that the excess volume of gasolene is' not measured #by the iioat mechanism. The gasolenefin the Ineas of gasolene, up tof-five gallons may be discharged throughthe delivery conduit, the

uring tanks being at the lev'el o'fthe top of.

.volume lthu's discharged being gaged by the graduations on the measuring tank. In case the full five gallons is sold to a customer, it is unnecessary to stop theA controlling valve at its No. 4 position. However if but a portion of the gasolene is sold, the next step in the operation is to turn the'valve to permit the remaining volume of gasolene to flow into the return measurin tank. Thevalve 23 or 72 being closed, t e gasolene is retained in the measuring tank, and as it flows therein causes the float 'to rise. In the final step of the operation the valve controlling the dischargeof 'gasolene from the return measurin tanks is opened,'and the gasolene permitte to flow `to the storage reservoir. As the gasolene thus flows from the return measuring tank, the fioat descends and causes the'indicatoi` mechanism to be turned backwardly in proportion to the volume of gasolene in the measuring tank when the valve 23 or 72 is opened.

The characteristic feature of my invention is that, in the practice thereof, an employee may not Withdraw gasolene from the storage reservoir and deliver it Without having the volume thereof adequately metered. According to the provision of 'the patent statute, I have described, the principle and operation of my invention, together with the constructions which I now consider to re resent the best embodiments thereof.L owever, I desire to have it understood that, within the scope of the ap ended claims, my inventionmay be practise `with other forms of construction than those specifically shown and described.

.- I claim as my invention:

1. In a liquid storage and delivery apparatus, the combination of a storage reser` voir, a measuring tank, a 4filling conduit connecting said reservoir` with said tank, a delivery conduit leading from said tank, a return conduit leading from said tank to said reservoir, means for controlling the flow of I liquid from the reservoir -to the tank and from the l tank successively through the deliveryv and return conduits, andmeans for measuring the volume of liquid that' flows vses through the return conduit.

2. In a liquid storage and delivery apparatus, the combination of a storage reservoir, a measuring'tank, a filling conduit connecting said reservoir and tank, a delivvoir, means `for filling said tank with a unit volume of liquid 4at each filling operation and for registering said volume, means for controlling the flow of liquid from the tank successively through said delivery and r'eturn-conduits, and means for measuring the volume of liquid that flows th ough the return'conduit. v

. 3. Ina liquid storage and delivery appafrom said tank,

and for ratus, the combination of a storage reser-` voir, a measuring tank, a Iilling conduit connecting said reservoir and tank, a delivery conduit, leading from said tank, a return conduit-leading from said tank to said reservoir, means for controlling the fiow of liquid from .said reservoir to said tank whereby said tank may be lled with a unit volume for controlling the fioW of liquid from the tank successively through said delivery and return conduits, and means cordinated with said last-named controlling means for measuring and registering the volume of'liquid that flows throughl the return conduit.

of liquid at each filling operation, means cordinated with said controlling -means for registering said unit volume, means 4. In a liquid storage and delivery appa- A ratus, Vthe combination of a storage reservoir, a measuring tank, cordinated means for filling said tank with`a volume of liquid taken from said reservoir and for register'- ingsaid volume, a discharge conduit leading fromsaid tank, and cordinated means for lfilling said tank with a unit volume of fluid taken from said reservoir, a registering device cordinated with said valve to register said unit volume, a delivery conduit leading from said tank,

from said tank to liquld that flows through said return conduit after a measured volume of liquid has been withdrawn from said tank through the de-` .ratus, the combination of a storage reservoir, a measuring tank, cordinated means for lling said tank with a volume of liquid taken from said reservoir and for registeri ing said volume, a delivery conduit leading and cordinated means for returning to the reservoir liquid in the tank measuring and deducting from said previously registered volume the volume of liquid so returned to the reservoir. v ery conduit leading from sa1d tank, a return conduit leading from said tank to said reseroratu 7. In a liquid storage and delivery appas, the combination of a storage reservo1r, for filling said tank with a unit volume of liquid taken from said reservoir and for registering said unit volume, means for returning unmeasured to said reservoir the liquid ltaken therein in excess of said unit volume, a delivery conduit leading from said tank, and vcordinated means for returning to said reservoir the liquid undelivered from a return conduit leading sald reservoir, and means`I -for measurlng and registering the volume'of a measuring tank, cordinated means said tank and for measuring and registering the volume of the last-mentioned returned liquid.

8. In a liquid storage and delivery apparatus, the combination of astorage reservoir, ameasuring tank, a filling conduit connecting said reservoir with said tank, a de#- livery conduit leading from said tank, a return conduit leading from said tank to said erating member for controlling reservoir, valve ports and a single valve 0poW through said several conduits, a registering device cordinated with lsaid member to register a unit volume of liquid when said member is `turned to permit flow through saidiilling conduit, and means for measuring and registering the volume Iof liquid that flows through said return conduit after liquid has geen delivered 'through said delivery conuit.

9. ln a liquid storage and delivery apparatus, the combination of a storage reservoir, a measuring tank, a filling conduit connecting said reservoir With said tank, a delivery conduit leading from said tank, a source of air pressure, conduits leading from said pressure source to said reservoir and tank, valve ports and a single valve-operating element for controlling first the How of compressed air to said reservoir and the How of liquid from said .reservoir to said tank,

and secondly the flow. of compressed air to voir, a measuring tank, a lling conduit con necting said reservoir With'said tank, and a discharge conduit; of a return measuring tank, conduits connecting said-return meas'- uring tank with said measuringtank` and with said reservoir, a registering device, and

float actuated mechanism in said return measuring tank for operating said registering device to register the volume of liquid returned to said reservoir after a measured Volume Iof liquid has been removed from said v measuring tank through the discharge conduit. v

In testimony whereof 'I have hereunto set my hand.

JOHN M. MILLER. Witnesses PAUL N. CRITGHDOW, FRANCIS J TOMAssoNi

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