US2614728A - Repeat valve shutoff mechanism - Google Patents

Description

Oct. 21, 1952 E, M KRE|DLER 2,614,728

REPEAT VALVE SHUTOFF MECHANISM Filed June 6, 1949 4 Sheets-Sheet 1 Fig- . Ear/ M. Kre/07er A Ifo maj/s UCL 21, 1952 E. M. KREIDLER REPEAT VALVE SHUTOFF MECHANISM 4 Sheets-Sheet 2 Filed June 6, 1949 ig; 4 Ear/ M. Kreidler B11/M wa/n,

Allameys Oct. 21, 1952 E, M KRElDLER 2,614,728

REPEAT VALVE SHUTOF'F MECHNISM Filed June e, 1949 4 sheets-sheet s /NvE/vron Earl M. Kreidler Eff/M #Wm A lla/nays Oct. 21, 1952 E M KREIDLER 2,614,728

REPEAT VALVE SHUTOFF' MECHANISM Filed June 6, 1949 4 Sheets-Sheet 4 /NvE/vron Ear/ M. Kreidler Attorneys Patented' Oct. 21, 1.9.52

g f-UNITED ,l STATES PATENT I OFFICE .Earl M. Kreidler, Pittsburgh, Pa., .assigner to Rockwel1.ManufacturingCompany; Pittsburgh,

Pa., acorporation of Pennsylvania V'Appli'cation June c, 1949; seriaiNo.- 97,353

'l Y This invention relates to liquid measuring apparatus and isparticularly-directed:toisuch apparatus for "lling eachof asuccession'o'mcontainers withapredetermined quantityof liquid and wherein the flow of -liquid is-stoppedautomatically as soon ras each container has 'been filled.

It is a major object of my'inventionto provide a repeating contairier-iilling apparatus containing novel shut-'o-fff control mechanism in association with'a meter driven register. l v

It is .affu'rther object oflmy invention to-provide "fluid .measuring apparatusy wherein a novel latch V'mechanism set -by nozzle' operation is adapted Atobetrippedby theregister when a predetermined quantity of liquid hasbeen passed throughthe' nozzle.

A'further object of the inventicn-isto'provide anovelre-set mechanism for the register control latchofa liquidmeasuring apparatus.

A further vobject of the invention is the useeof positive Agear -drive -in apredetermining `register control, correlated replaceable gear lsets. being available for setting theregisterfto tripthe llatch at diierent exact predetermined'quantities of delivery. y

Further object of the inventionwill appeanas the descrip-tionproceeds in connection with the appended vclaims Aand the annexed vdrawings wherein:

Figure lis a side-elevation assembly of a meter andl register in* coupled relation' tolthe` iilling nozzie -controlled thereby, according toy a preferred embodiment lof the invention;

Figure 2 vis a top lplan'vievv vof the nozzleas-v semb1y,-With the parts Iin nozzle open position;v

Figure v3 is a top plan view ofthe latching, tripping and resetting mechanism, ypart ofthe casing being broken away and ins'ection;

Figure Llisa side elevation of the mechanism of Figure 3, with the front cover plate removed toshow the cooperating4 latchelements andthe reset cam; l'

Figure 5 .is Ja' fragmentary elevationA externally of thecoverfplate, illustrating :the-manner ofindexing the' re-set cam; f Figure 6 is asection in elevation illustrating the vregisterand latch vtrip drive within thecasine: 1

Figure '7 is ,another section through'the .case

ingillustrating `the re-set cam shaft and `asso- ,ciated drive mechanism;

r Y I f i2 Y I Figure' -91 isv an axial ,sectional View of the. re-set cam shaftrillustrating particularly the oneeway clutch `connection between the cam'andwthe shaft;

Figure 10 is an end elevation of the nozzle controlled byzzther'egister;

Figure 11 isan axial .secton'throughthe nozf zle of Figure 10; and

Figure `12 is fa side elevation of nozzle `of v'Figuref9. ,A i if VReferring lto 'Figure f1, a piston or like meter unit I-I vadaptedto receive liquid to' be'measured through an inlet *(not shown), which' liquid may be eitherv pumped-'or ldelivered `by gravityto the meter, has an outletl vI2 connected by a flexible conduit I3 to a nozzle unit I4, later to be de-v scribed in more detail. The-meter II may be any suitable typeofiiuid flow measuringmeter, althoughfpreferably itis ofthe opposedpiston type. Secured 'to 'the upperpart of the'met'er I'I isa register and-nozzle control assembly comprising an intermediate drive mechanism housing I5 uponvvhich` is secured amainly cylindrical registencasingil. vTheintermecliate housing I5 contains variable vdrive gear mechanism between themeter and'register having means `for controlling the Ameter output'in accord-,with physical characteristics 'of the liquid'passing'through the meter. VTo this end, 'I'.may provideAW/ithin the housing I5 lsuitable combined temperatureand specic 'gravity compensation devices connected to vary thespeed at which the meter output/shaft drives the register. These compensation devices are not shown .but may bethe same as disclosed in .United States Letters Patent to `Marsh No; 2,438,934 issuedApril 6, 1948, to which reference ismade `for ,4 any detail necessary `to understand this invention. i

In any eventmeter I I.drives a pinion I'I atthe' upper'out-putend of; housing I5 at a speed whicl'iy is .proportional'fto the .ow of uid through the meter, whichspeed may be compensated in ,'.ac

the 1 top. of the cord with the ,temperature` and/or speciiicgravity v gether y by a :plurality of` screws `(not shown) disposed about their yadjacent peripheries. Allof 1 Figure 8v is la sectional :plan: view :illustrating thefmountingof the cam contrblledilatch'-memthe latch reset andtrip mechanism withinrcase ing I 6 is mounted on base plate I'S, vlduring as.

sembly, and the casing lI6 may be readily-.rei

moved lfromkthe base l.plate to expose thelmech, anism for repairlwithout dismounting thelatter' -from plate I'B.

-At oneside, 'casing I6 isfforined fwithl :parallel integral extensions providing a'at wall IS having a large rectangular opening 29 normally closed by a thin plate 2i secured to wall I9 'as by screws 22, The curved wall of casing I5 is formed substantially diametrically opposite wall I9 with a generally rectangular opening 23 closed normally by a thin plate 24 secured to the casing' as by screws 25. The purpose of these openings will appear later.

At its top, casing I6 is closed by an integral Wall 26 except for a central opening 21 in said wall which is'covered by mounting thereabove a conventional register mechanism housing 28 containing the usual visible counter from which the accumulated amount of fluid that-has been delivered by the meter may be noted at any time. Mechanism housing 28 is secured to casing I6 as by a plurality of bolts 29 passing through a non-rotatably upon a horizontal shaft 53 jour nalled at opposite ends upon spaced bosses 5I and 52 upstanding integrally from base plate I8 into the interior of casing I6. Suitable removable spacers may be provided along shaft 55 for preventing its axial movement after` assembly. On the side of boss 5l opposite gear 49, shaft 50 has removably secured thereto, as by a set screw 53, a gear 54 constantly meshed with a gear 55 removably secured, as by set screw 56, upon the end -of a shaft 51 that extends through boss 5I, above the worm 42 and then through another boss 58 that also upstands integrally from plate v I8 into the interior of casing I5.

flange on housing 28 and into suitable threaded holes 30 in wall 26. Preferably the casing I5 is mounted upon housing I5 as by a plurality of long bolts 3| that have their headsl seated in suitable counterbores in wall 25 and extend down through the interior of casing I6 and through base plate I8 into threaded bores in housing I5 as indicated in Figure l. The register itself is preferably a conventional calibrated counter and need not be further described.

Depending from register housing 28 is a shaft 32 carrying a gear 33 disposed Within the opening 21 and in constant mesh with a gear 34 driven from the meter and compensating mechanism as will appear. The entire register casing 28 with exposed gear 33 at the bottom is a separate unit removable from the casing I6 by removing bolts 29. Y

Referring to Figures l, 6 and 7, gear I1 driven by the meter and compensating mechanism is meshed with a gear 35 removably secured to a vertical shaft 36 that extends upwardly through a bore 31 in an integral internal boss 38 upstanding from plate I8 into the interior of casing I6. Shaft 35 is journalled in bushings 39 that line bore 31, and below bore 31 shaft 36 has a gear 40 secured thereto, as by a set screw 4I. The upper end of shaft 36 has a worm 42,.and shaft 36 is maintained from axial movement within boss 38 by abutment of gears 40 and worm 42 with opposite ends of the boss 38. If shaft 36 is to be removed from the boss, it is only necessary to remove gear 35 and loosen screw 4I and pull the shaft upwardly through the boss.

Boss 38 is provided with an integral upward extension at one side containing a bore 43 parallel to bore 31 and lined with bushings 44 for journalling a vertical shaft 45 'parallel to shaft 36. A gear 46 constantly meshed with gear 40 is secured upon the lower end of shaft 45 by a set screw 41. Above the boss, shaft 45 is provided with an enlarged flange 48 abutting the top of the boss which together with gear 46 prevents axial displacement of the shaft. Above this flange, shaft 45 has non-rotatably secured thereto the gear 34 which is constantly meshed with the register counter drive gear 33.

In this manner I provide a direct positive drive through the intermediate casing from the meter driven gear I1 to the register drive gear 33 so that the counter within housing 28 will be driven at all times regardless of the operation of the reset mechanism to be described. Preferably thev gears are of such size that the speed of shaft 32 is the same as thatvof the shaft on which gear I1 is mounted.

Referring to Figure 3 and 6, worm 42 is con-- stantly meshed witha worm gear 49j secured 75*between cam 63 and shaft 51 for re-set purposes,

Shaft 51 and its assembly are illustrated best in Figure 9. Shaft 51 extends through the boss 58 and terminates'within the opening 20 of casing wall I9. A collar 59 is fixed to this end of shaft 51, as by pin 60 thereby providing an enlarged head for the shaft. Bushings 6I and 62 journal and support shaft 51 on bosses 5I and 58.

An integral cam member 63 is freely rotatably mounted on shaft 51 and formed at its outer end with a bore 64 at the bottom of which is a shoulder 65 against which the enlarged head of 51 is seated. Bore 64 is threaded at its outer end beyond head 59 and closed by a screw threaded closure cap 56 which may be removed when separation of the cam Aand shaft is desired.

A spacer block 61 removably secured to shaft 51 as by set screw 6B abuts the inner side of boss 58 to limit axial displacement of shaft 51 and prevent binding of gear 55 during operation.

At the other side of boss 58, shaft 51 is formed with a longitudinal slot 69 and surrounded by a separate cam hub sleeve 10 having a radial flange 1I intermediate its ends. Outwardly of flange 1I sleeve 10 is formed with a shallow annular groove 12 and a cylindrical surface 13 smaller than flange 1i. A removable key element, such as a set screw 14, extends through sleeve 10 into slot 69 to prevent relative rotation of sleeve 10 and shaft 51 but to permit some axial movement of the sleeve along the shaft.

Cam member 63 is formed at its inner end with a radial shoulder 15 beyond which is a reduced cylindrical surface 15 of the same size as the cylindrical portion 13 of separate cam hub sleeve V1t), and a shallow annular groove 11 is formed in cam E3 at the base of shoulder 15. A compressed coil spring 18 extends between the cam and the spaced cam hub with its end coils locked in grooves 12 and 11. This spring is stiiT enough so that the cam and cam hub may be united through this spring connection only as a sub-assembly. A thin metal sleeve 19 is provided with its inner end pressed onto a lshoulder on cam 63 and overlying the portion of spring 18 attached to cam 63.

One function of compression spring 12 in this assembly is to react against stationary boss 58 through hub sleeve 1B and thereby urge cam 63 into tight frictional engagement with head 59 of shaft 51. Spring 19 also functions as a oneway clutch between shaft 51 and cam'63. The spring is coiled in such direction that when cam 63 is turned in a clockwise direction as viewed in Figure 4.- the spring coil will wrap about and bind upon the cylindrical surfaces 13 and 16 of the cam and hub sleeve respectively, thereby preventing relative rotation between the cam and shaft, but when the cam is turned in counterclockwise direction the tendency of the spring is to unwind thereby permitting relative rotation -tionary boss 58.

f container to be lled. f

cameparts and between the cam 'B3-and .the ,shaft als'p'ermits this-relative rotation.

- yReferring now toFigures 3f andf4, bossatl is `formed at alower levelthan shaft 51 with a lat` eralfprojection 8| having a stationary'horizontal pivot p'in82 projecting therefrom parallel to the axis'of shaft'51. A latch bar-'83` is freely pivoted onpin` 82fbeing axially retained thereon byf-'a stopcollar 84. -Latch bar-'83 is'constantly biased clockwise in Figure 4 by a tension spring`85 anchoredat opposite-ends on latch bar 83 and sta- Movement of latch bar 83 lin vclockwise direction is limited by engagement of a dogv 86 on the latch 'bar with a stationarystop piir01fupstanding from base `plate |8.V

Ajsupport block 8B upstanding from'the iioor ofv plate |8- carries a horizontal 4stationary pivot pinassembly 89 on which is freely journalled a second latch bar 9| having a bifurcated upper end bridged by a pin 92 over which is pivotally hooked the end 930i a fittingv 9-secured upon one end of a flexible cable 95 that extends fromvcasing I6 to nozzle I4 as will appear. `The adjacent lower ends of latch bars 03 and 9|, which" will engage each other during operation, are provided withwelded insert blocks 96'and 91 of some hard wearv resistant material like tungsten carbide or hardened steel tol reduce lwear in the assembly and maintain accuracy in operation.

As illustrated best in Figure 4, cam member 63 is integrallyfv formed witha lateral cam projection v'98' having ua curved surface 99 adapted to wipingly engage a horizontal pin |00 kprojecting ylaterally from the upper part of latch bar 8,3, and 'theoperation of this cam will presently be described. Cam projection 98 is also formed with a face I| adapted to engage pin |00 during reset as will also be laterl described.

Flexible cable 95 extends through a sheath |02 which is secured to a nozzlevattachment fitting |03 at its remote end. The register end of sheath |02 is threaded at |04 for mounting an 'internallyand externallythreaded coupling that is threadedly secured .inia threadedbore |06 in the` side of casing I6. When coupling r|||5is drawn tight, it securessheath |02 rigidly'with f casing IS, and the flexible cable 95 isof course `freeto slide within the sheath. At the other endof the cable where itiprojects from sheath |'02an enlarged .head button |01 is fixed upon the;cable 95. A coiled compression spring |08 extends between head |01 and tting |03, being piloted on .a boss |09 rigid with head |01. y

vIn the assembly illustrated in Figure l, fitting |03 is rigidly mounted within a tubular bracket ||0 secured to the body of nozzle I4 as by screws I|| I(Figure2). Spring |08, when compressed in nozzle open position as in Figures l and 2, constantly tends to move head |01 to the left in Figure 4, thereby tending to pull latch bar 9| counterclockwise toward the dotted line position of Figure 4. .A -ReferringtoFigures 1, 2, 10, 11 and lzfornozzle construction, nozzle I4 comprises a body member H2 to the bottom of which is xed a seat ymember ||3 having a depending conduit portion` ||4 adaptedto entera hole in the barrel'or other A valve member I|5, having a flexible annular seat I|6 adapted to seat with member ||3, is secured rigidlyupon an upstanding rod I|1slidably mounted in a bore IIB intheupper wall of the body |I2. `A heavy coil compression spring ||9 reacts 'between the top wall ofthe bodyv and the valve 'I 'I5 and constantly axis surrounds thebottom of boss |2|.

in all of the Figures l, 2, l0 and 11.

The upper end of body I I2 isv formed' withi an .upstanding cylindrical boss |2| within which is mounted avgland assembly |22 slidably surrounding rod II1. An operating head |23, which also serves as a cap for closing the top of boss |2|, is provided upon its lower edge vwith a pluralityof, preferably three, inclined equally spaced a cam faces 24 that each intersect a verticalface |25 at one end andintersect a planarl surface r| 26 on the bottom of the cam head and perpendicular lto the axis of rod II1 at the other end. Preferably the angle of each face |24 is about 60 relative to the valve axis. A planar ledge or surface |21 on body ||2also perpendicular to the valve A number ofstationary pins |28, corresponding in number and location to the inclined'cam surfaces |24, upstandfrom ledge |21. vThese pins support head |23 `when the valve is in open position, and they are disposed within the recesses formed-"by faces I24-and |25 when the valve is in the closed position illustrated in Figure-'12.

threaded upper end of rod II1 where the'rod projects slidably through abore |30'i'n the upper wall of head"|23. Gam head |23and rod II1 are preferably relatively rotatable although -not necessarily so. Spring H9; acting through'rod I I1 and nut'v assembly |29 urges cap |23 and body I|2 axially-together. yA radial lug |3| integral with head |23 is provided for engaging cable end button |01 `during operation,-and a radial arm |32 is secured to head |23 for manually turning it about boss |2| to open the valve. Thenozzle body is also provided-with a Ahandle |33 for the operator to shift the nozzle from one container to another. i

Operation y clockwise into the full line position of Figure 4 where it is arrested by pin 81 which serves as a positive stop to maintain latch bar 9| in the full line set position. Spring |08 is compressed beboss |2| against the pull of spring ||9 .which istherebyfurther compressed. When the head has rockedV sufliciently to raise valve ||5 into open position, further rocking continues with surface |26 bearing on the tops of pins |28 until the full line position of Figure 2 is attained. vThen the operator releases arm |32.

Atthis point compressed spring ||9 will pull downwardly on headf|23 but pins |23 maintain the head raised and the valve open. Spring |00,

7 which has been also compressed during the operation of openingthe valve, reacts against button it? but the cable is vnowvlatched and held against the action of spring |68 by the mechanism within casing i6. Friction and the downward pull of spring H9 prevent accidental closing of the valve. The proportions are such that spring V|05 may effect a small return rocking movement of the head when the operator releases arm 32, to take up play in the latching mechanism, but this is not enough to rotate the head back far` enough for pins |23 to enter the recesses defined by surfaces |2li. When the parts are in latched position as illustrated in Figure 4, wear tip Si of latch bar 9| is engaged with the wear tip 9S on the lower end of latch bar 233,V

whereby after the operator releases arm |32 latch bar 83 is a stop for preventing spring 08 from shifting cable 35 to rock cam head |23 counterclockwise with respect to its full line position of Figure 2. in Figure 4, the dotted line position of cam projection 93 wherein its face |0i is substantially in contact with pin is the relation that these parts occupy when the latch bars are cockedas above described. rIhe arrow in Figure 4 shows the rotation of the cam during the container filling operation.

` The valve H5 being now open, liquid to be measured flows through meter l and conduit i3 and through the open valve into the container. Passage of the liquid through the meter is effective to rotate drive pinion which drives the counter in register 23 through gear 35, shaft 36, gear #10, gear B6, shaft d5, gear tdi, gear 33 and shaft 32. At the same time shaft 5,? is rotated clockwise, as viewed in Figure 4, from the starting position with face |0| in engagement with pin |00. Rotation of shaft 36 by the meter as above described also causes rotation of shaft 5G through the worm and gear combinataion 42 and 43, and this in turn produces rotation of shaft 5l through the meshed pinion gear combination t and 55. Since key lll is disposed in slot 63, the cam assembly will rotate with shaft 5'1.

As the barrel or other container being filled nears its capacity, the cam face 3Q of projection 98 will slowly approach the full line position illustrated in Figure 4 wherein it contacts pin |00. Contact of moving cam face S9 with pin |00 will cause counterclockwise rocking of latch bar S3 against the pull of spring Sli to thereby move latch bar 83 to the dotted line position of Figure 4 and thereby release latch bar 9| and enable the spring |68 to expand and rotate cam |23 toward the dotted line position illustrated in Figure 2. As soon as the cam head has rocked far enough to locate the recesses liil, |25 over pins |23, spring i I9 takes over and completes the closing movement of the valve quickly. The nozzle parts assume the position oi' Figure l2 when closed. This trip action of spring i0@ and the follow up action of spring I3 quickly closes valve as soon as the correct amount of fluid has been supplied to the container through the nozzle. y

The lratio of the number of teeth of gear `Fui to the number lof teeth of gear l:Sli predetermines the latch trip action and thus ldetermines the amount of fluid delivered to the nozzle. In the invention I .have provided different cooperating sets of gears 5ft and 55 with suitable number of teeth for rotating shaft 5l at such different rates as to' provide delivery of different predetermined numbers of gallons to the nozzle. For example 5U, 51, 52, 53 or 55 gallons may be predetermined as desired according to the ycapacity of the con tainerto lbe filled. Access to the interior of the casing fory replacing these gears may be gained simply by removing screw 25 and @over plate 24 without disturbing any of the other mechanism.

. These sets of gears 54, 55 provide a positive drive for the shaft 5l' which is much more reliable than hitherto used chain drives for the same purpose. in the chain drive, it 'is impossible to obtain a chain in which the links are ally of the same size and hence it was diicult to reproducibly set it for exact .predetermined quantities because it was not always possible to remove links of the same length. Furthermorewith a gear drive, a much wider range of calibration of thev device is obtained in that much smaller delivery quantities can be predetermined in the rmeter with greater accuracy. For example, with the gear drive and suitable selection of .gears I can optionally deliver quantities in one-half gallon steps from a minimum of one-gallon to `50 or more gallons with amazing accuracy.

The dotted lines in Figure 4 illustrate the positions that latch bars 83 and 9| occupy after having been tripped by the cam. Latch bar 9| has been rocked until its tip serves as a stop to limit rocking of bar 83 by spring 35.

When the nozzle is reopened, thereby rocking latch bar 9| clockwise, its tip 91 simply slides along tip 9E until it clears latch bar 83and permits spring 85 to shift the latter into its, full line position.

The relation of the parts is such that rotation of shaft 51 and cam 63 should cease at the end of each container filling operation when cam projection 98 has just passed the p-in |00 with cam face |0| substantially in contact with upper side of pin |00. The purpose of the one-way clutch between cam E3 and shaft 51 is to permit reset of the cam to this initial position and theoretically it is necessary only at the beginning of a series of filling operations and it is not necessary to reset after each container is filled because of the relation of parts just mentioned.

The reset operation is accomplished by rotating cam 63 counterclockwise (Figure 4) until stopped by the pin |00. rThe gearing beyond shaft 5l locks the shaft against'rotation during this operation. As illustrated in Figure 5, an index line |34 is preferably provided on the outer face of plate 2| tocoact with an index line |35 on the front of cam 63 Where the latter .projects through plate 2| to provide proper reset for the cam. When `the cam is set as indicated in Figure 5, cam surface |0| is substantially in Contact With pin |00. The cam will stop with these index lines in alignment after eachvlcontainer is lled.

This invention maybe embodied in other speciiic forms without departing fnom the spirit or essential ycharacteristics thereof. The Ipresent embodimentis therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description.' and alll changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

What is claimed vand desired to be secured by United States Letters Patent is:

l. In a system for repeatedly dispensing a prev determined quantity of liquid, a meter driven by the liquid to be dispensed, a register assembly Y 9 control valve, a motion transmitting member extending between said register assembly and said nozzle, means for manually actuating said valve to open said valve, having a Ipart coa-cting with said moti-on transmitting member to shift said member in the movement of the valve to open position, means for latching said shifted member, resilient means biasing said member to normal position andenergized during said opening of the valve to urge said member in a direction to effect closure of said valve, and means driven by the meter for tripping said latching mechanism to permit said resilient means to actuate said member and transmit motion to said valve actuating means in valve closing direction to effect closure of the valve after a predetermined quantity of liquid has been dispensed through said nozzle.

2. In a liquid dispensing assembly, a meter, :a conduit connected to the meter outlet, anozzle on the conduit, a valve in the nozzle, a valve operating head rotatable on said nozzle, an axially movable flexible cable connected -at one end to said nozzle, means carried by said head coacting with said cable to shift the cable in one direction in the valve opening movement of said head, energy sto-ring means rendered effective in the valve opening movement of said head to shift said cable in the opposite direction and transmit rotation to said head in valve closing direction, a register assembly adjacent said meter, means in said register assembly operatively connected with the other end of said cable to latch said cable when the valve is opened, and meter operated means for tripping said latching means when a predetermined quantity of liquid has passed through said valve.

3. In the liquid dispensing :assembly defined in claim 2, said energy storing means comprising a spring compressed between said cable and the nozzle during said valve opening operation vadapted to actuate said :cable to rotate Said head toward valve closed position when said latching means is tripped.

4. Repeating valve shut-off mechanism comprising cooperating latch members, one of which is operatively connected to a valve control member, a meter driven shaft, a cam on said shaft adapted upon rotation of said shaft in one direction to engage the other of said latchmernbers for tripping the latch to effect closure of the valve, and a direct one-way driving couple between said shaft and cam permitting rotation of said cam on said shaft in the direction ropposite said one direction to reset said mechanism at the beginning of a series of container-filling operations. 5. The repeating valve shut-off mechanism defined in claim 4 in combination'with a casing transmitting element having means at one endv yieldably interposed between said nozzle and member and rendered effective by said member to move said element and transmit motion to said member in the opposite direction to close the valve, means for latching said element and restraining said yieldable means against effective operation, and meter operated means for tripping said latching means when a predetermined quantity of liquid has passed through the valve.

7. In a liquid dispensing apparatus as defined in claim 6, said latching means comprising a pivotally mounted member pivotally connected to the other end of said motion transmitting element, and a pivoted spring biased latch lever directly coacting with said member.

8. In a liquid dispensing apparatus as defined by `claim "i, said meter operated means comprising a rotatable member having a cam lug adapted to be positioned with respect to said latch lever 4by manual rotation of said member in one direction, and means drivingly connecting said member with a meter driven shaft to rotate said member in the opposite direction and trip said latch lever to release position.

EARL M. KREIDLER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Bergman et al. Feb. l, 1949

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