US2672089A - Fluid mixing and serving mechanism - Google Patents

Description

March 16, 1954 C, JOHNSON 2,672,089

FLUID MIXING AND SERVING MECHANISM Filed 001;. 50, 1948 25 243 FJ] 7 m k 24 1 I a9 42 3 Q 25 37/ s: 2zy INVENTORQ aAef/vcf JOHNSON BY aka @Flin Patented Mar. 16, 1954 meme zssignm ents. to Manufacturing; Company; Pittsburgh. Par... w corporation et Bennsylvania "This invention relates to'l mechanisms' for mixing and serving iiuids automeetieelly iin predetermined quantities, and more particular@ toL mech ansms for serving liquids andv a gaseous. mixed'v in predeterminedv quantities toforma drink.

Manyr of Ythe ordinary bottled drinksV found on the market toda-y consist of' nothing more. than a syrut:V mixed with w21-tez"-` that has been charged by agaseous Huid, soon es carbon dioxide- By mixing the syrup; the Weiter and the gaseous lnid at the location where the drink is toA be consumed and discharging the 'mixto-ie 'the proper amount to e; drinking' `cnn or gia-ss, the` expense of hottli'ng may be removed 'and theexpense of transportation 'may he reduced sin-ee the tap Water at the particular location be used'.

' An ohject' yofv myv invention is to provide en improved' 'mechanism for and serving fiiiids automatically in Apredetenneined quantities; Am other' ohect 's to prov-ide an improved mechanism'. fory discherging'-liqnids inpredetermined quantites-from seperate sources to a conn-non recep-f taole: Yet ano-ther object is to provide a mechenism for discharging syrup and Water'charged by a gaseous uid in predetermined quantities to e common receptecleend, at the same time deliveringWaterI from la; source to a mixing chamber towhichgaseous fil-iid is supplied under pressure.

A preferred form of my'invention include a piston having, stepped portions that ere'- reciprocable in 'cylinder bores having valve 'controlled intake andl discharge passages communicating therewith. The space in one ci the-bores may be connected by' its intake passage to e chamber containing syrup. The otherbore may be connested et one side of the piston by its intake passe-ge to a mixing chamber to which gaseous finie, `such as carbonA dioxide, is supplied continuously onder pressure, and to which water is supplied through the discharge passage communicating-"with the seme bore atA the other side of the piston.V Water is supplied from a suitable Fig. I is. a. sectional View my' imi-n prove'df mechanism .for and serving neunte'.

Fig. 2 is a pian: View* oi? Fig. J..`

Fig.. 3i is. a horizontalf sectional View.' taken 'on the plane vof the. lineAk 3F21: of Fig.. 1.

Fig. 4 a horizonte! sectional' View taken on the. piene; of the .line 1 -4L of' Fig.

Referringto the drew/ing it Wild be noted that there is. shown avcylinder l? e.. in. which a1 portion of' e. piston i is reeinrocahly received.. A cylinder'. head 5 fits: within the bore 2" andi is provided with enlarged pewllinl'iav resting upon a shonider 'l at the upper-end.' of the bore. Extending into the cylinder head .its lower end' is' here 8 reciprooahly' .receiving a reduced portion Q2' of piston 4i. Theupiston portion 3A is show-n asf en ennuier member having a forced nt'. on the'. portion so that they operate: together asia. single; piston.. Foi-medi integrahy with the piston portion. 9' isapiston: rod if! extending from .the Iower side o-i the portion '3 through. a tower cylinder' head t2 rests upon a split ring i4 fitting With-in er1-annuler groove formed? the. cylinder li. Screws 't5 extend through Geerlings in a. can. engaging the lower end of the cylindery .are 'threaded into openings in the Iower cyiind'er heed for holding it nem-Iy engagement; the. .ring H3. Y".lhe diameter ci the pis-"ton rod te slightily gir-'eater then of the pistonportion `Si terreesonsthatfwiiii shortly be described'. .For 'reeiprocating the piston. members there is provided a rod 'l pivotaliy connected tothe. piston roa -ril and carrying n sleeve portion. I8 tting over-an eccentric. cam lid which is.` rotated by elpee/er shaft 26. Any'st'rable. power means, not: shown, may be provided for rotatiufrg` the shaft .zd through one revolution upon the insertion of a. coin. into-va. slot.

Arranged' within the V'cylinder member t above the upper cylinder' is. a block 2E heid in engagement; with a. sont. Z3 by screws 24 extending through openings a cylinder can 25 endl threaded into openings inthe Monk. Ciamped between the: bleek 222 and Vthe cylinder heed 's a liaiiie niate 126 Wha is es shown in Fig.. 3, so that its Vertical edgesx are spaced ane-rt a; short distainee to provid-Ye communication he tween the spaces 2lA amd- Zii et opposite sides Vci the heide. It Wiii be noted that thel baie acts to holdthe cylinder head 5i frmiy engagement with theshoul'der Opening through` the lower cylinder v2 is 'a passage 3U- 'for conducting Water-'1 from af. pipe connection 3l! Vvto the cylllinder'bore et the Iower side ci? the piston portion A haliva'lve?! ys arranged in the passage to prevent any water from being forced out of the bore 2 toward the pipe 3| when the piston 4 is moved downwardly in the bore. A spring 33 acts to move the ball valve toward its closed position, but the spring is sufficiently light so that pressure of the water supply will unseat the valve. A discharge passage 35'extends through the lower cylinder head from the bore 2 and is connected by a conduit 36 to a passage 31 extending through the block 22 into communication with the space 21. A nozzle 38 is connected in the discharge end of the passage 31 so that the water is introduced in a ne spray to the space 21. A ball valve 33 is arranged in the passage 31 to prevent the ilow of fluid through the passage away from the space 21 and to permit ilow in the opposite direction. A spring 43 urges the valve toward its closed position. Extending through the block 22 is another passage 42 for supplying a gas, such as carbon dioxide, from a supply connection 43 to the space 21. This gas is delivered to the space 21 at a pressure of approximately 10i) pounds per square inch. As the water is sprayed into the space 21 it becomes thoroughly mixed with the gas and then passes between the ends of the baille plate to the space 28. Extending through the cylinder head 5 is a passage l5 connecting the space 28 at the side of the baille opposite the opening between its edges to the bore 2 at the upper side of the piston portion 3. A ball valve 46 permits the flow of mixed gas and water toward the bore 2 but prevents new in the opposite direction.

As mentioned above the piston rod iii is slightly larger in diameter than the piston portion S. This means that the working space within the bore 2 beneath the piston portion 3 is slightly smaller than the working space above this piston portion. The diierence between the volumes of a passage 48 communicating with a conduit di! J" which receives syrup from a suitable source. A spring pressed ball valve 50 opens to pass syrup toward the bore 8 and operates to prevent flow in the opposite direction. Another passage 52 opens through the cylinder head 5 into the bore 3 near its upper end and is connected to a conduit 53 which communicates with a passage 54 in a central body portion 55 of a nozzle 5E. Opening through the cylinder head 5 into the upper end of the bore 2 is a passage 5S which is connected to a conduit 59 communicating with a passage G extending through a cap 6i threaded upon the body portion 55 of the nozzle. The passage 54 in the body portion 55 extends axially through the latter and opens into a space 62 within a cap 63 threaded upon the lower end of the body portion. Formed in the portion 55 around the passage 54 are several passages 65 for conducting fluid from the passage to the space 62. Cooperating with the passage E0 is a spring pressed ball valve 56 which opens to pass fluid from the passage 63 to the passages 65 and closes to prevent iiow in the opposite direction. Another spring pressed ball valve 31 cooperates with the passage 54 to pass fluid from this passage to the space 52 and to prevent flow in the opposite direction. The valve 61 is arranged at the discharge end oi' the passage 54 so that the syrup discharged from the latter is sprayed outwardly into the paths of `the charged water and is thoroughly mixed therewith. Opening through the cap 63 is a port 68 through which the mixed fluids may be discharged to a suitable container.

The operation of the mechanism described is as follows. The piston 4 normally assumes a position in which its portions 3 and 9 are located at the upper ends of the bores 2 and 8, respectively. The power mechanism driving the piston is so designed that it causes the piston to make one complete reciprocation when a coin is inserted. When the piston is in its upper position, the space in the bore 2 beneath the piston portion 3, the passage 35, the conduit 36 and the passage 31 up to the ball valve 39 are completely lled with water received from the conduit 3|. As soon as the piston is moved downwardly, water charged by the carbon dioxide gas is taken from the space 23 through the passage 45 to the bore 2 at the upper side of the piston portion 3. The water at the lower side of the piston portion 3 is forced at the same time through the conduit 36, past the valve 39 and through the nozzle 38 to the chamber space 21. Since the water and gas are rst mixed in the chamber 21 and must pass between the edges ci the baille and around the latter to reach the passage 45, it will be seen that a thorough mixing of the gas and water is obtained before it is discharged to the bore 2. Downward movement of the piston 4 also produces a flow of syrup to 'the bore 'd from the conduit 43. As the piston is moved upwardly to complete its reciprocation, syrup is forced from the bore 8 through the conduit 53 and the passage 54 to the space S2 in the lower cap of the nozzle 56. The charged water is forced from the bore 2 through the conduit 53, the passage 60 and the passages 65 to the space 52, and a new supply of water is taken from the conduit 3l into the bore 2 beneath the piston portion 3. The charged water and syrup are thoroughly mixed in the space 52 of the nozzle 56 and are discharged through the opening 63 to a suitable receptacle, not shown.

While there is shown in this application one form which my invention may assume in practice, it will be understood that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. A mechanism of the character described comprising, in combination, means providing a plurality of bores of different diameters, piston portions reciprocable in said bores, means for reciproeatingv said piston portions in synchronism with each other, valve controlled intake and discharge passages openinginto each of said adjacent one end, a chamber, means for supplying a gaseous `duid continuously to said chamber under pressure, means actuated by said piston reciprocating means for delivering a predetermined quantity of liquid to said charnber on each reciprocation of said piston portions, one of said intake-passages communicating with said chamber for supplying a mixture of liquid and gaseous iluid to one of said bores, means for supplying a diiferent fluid to another of said intake passages, a nozzle having separate passage means communicating with said discharge passages, a mixing chamber receiving fluid from said separate passage means, and passage means for discharging mixed fluids from said mixing chamber.

2. The mechanism of claim 1 including a baie arranged in said first mentioned chamber to form a circuitous path through which the gaseous fluid and liquid must 'flow between the point at which they enter the chamber and are discharged therefrom to said one of said intake passages.

3. A mechanism of the character described comprising, in combination, means providing a pair of stepped sores opening into each other and closed at their outer ends, a piston having portions reciprocable in said bores, means including a piston rod connected to said piston for eiecting reciprocation of the latter, valve controlled passage means for supplying a liquid to the larger one of said bores at one side of said piston, means providing a chamber, valve controlled passage means for conducting liquid from said larger bore to said chamber. means for supplying a gaseous fluid under pressure to said chamber, valve controlled passage means for supplying mixed gaseous fluid and liquid from said chamber to said larger bore at the other side of said piston, a Valve controlled discharge passage communicating with said larger bore at said other side of said piston, valve controlled supply and discharge passages communicating with the smaller one of said bores, a nozzle having separate passage means communicating with the discharge passages from said bores and opening into a mixing chamber, and passage means for discharging mixed iiuids from said mixing chamber.

4. A mechanism of the character described comprising, in combination, means providing a pair of stepped bores opening into each other and closed at their outer ends, a piston having portions reciprocable in said bores, means including a piston rod connected to said piston for effecting reciprocation of the latter, valve controlled passage means for supplying a liquid to the larger one of said bores at one side of said piston, means providing a chamber, a baffle arranged in said chamber for separating the latter into chamber spaces communicating with each other adjacent one side of the chamber, valve controlled passage means for conducting liquid from said larger bore to one of said chamber spaces, means for supplying a gaseous i'luid under pressure to the one of said chamber spaces to which liquid is conducted, valve controlled passage means for supplying mixed gaseous fluid and liquid from the other of said chamber spaces adjacent the opposite side of said chamber to said larger bore at the other side of said piston, a valve controlled discharge passage communicating with said larger bore at said other side of said piston, valve controlled supply and discharge passages communicating With the smaller one of said bores, a nozzle having separate passage means communicating With the discharge passages of said bores and opening into a mixing chamber, and passage means for discharging mixed fluids from said mixing chamber.

5. The mechanism of claim 4 in which said piston rod has a diameter greater than that of the smaller portion of said piston and extends through the outer end of the larger one of said bores for connection to said piston, and the rst mentioned one of said valve controlled passage means conducts liquid to the outer end of the larger one of said bores.

6. A mechanism of the character described comprising, in combination, a cylinder having a bore therein, cylinder heads supported within said bore at spaced points, a reduced bore formed in one of said cylinder heads and opening into said cylinder bore, a piston having portions reciprocably received in said bores, a piston rod extending through the other of said cylinder heads and connected to said piston for effecting reciprocation of the latter, a valve controlled intake passage extending through said other cylinder head into communication with said cylinder bore, means for supplying a liquid to said intake passage, a block supported within said cylinder at a point spaced from said one of said cylinder heads so as to form a chamber space therebetween, a Valve controlled discharge passage extending through said other cylinder head into said cylinder bore and through said block into said chamber space, means for supplying a gaseous iiuid continuously to said chamber space, a valve controlled passage extending from said chamber space through said one of said cylinder heads into said cylinder bore, a valve control passage for supplying fluid to one end of said reduced bore, a nozzle having separate valve control passages therein, passage means for connecting said separate passages in communication with said reduced bore and with said cylinder bore at its end adjacent said reduced, bore, a mixing chamber in said nozzle receiving fluid from said separate passages, and passage means for discharging mixed iiuids from said mixing chamber.

7. The mechanism of claim 6 in which the diameter of said piston rod is greater than that of said reduced bore.

8. The mechanism of claim 6 including a valve member cooperating with the end of one of said separate passages opening into said mixing chamber and operating when unseated to direct iiuid as a spray into the path of the fluid discharged from the other of said separate passages.

CLARENCE JOHNSON.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 661,259 Elam Nov. 6, 1900 1,058,383 Von Peim Apr. 8, 1913 1,243,068 Humphrey Oct. 16, 1917 1,360,298 Johnston Nov. 30, 1920 1,798,095 Manley Mar. 24, 1931 1,860,768 Bohnenblust Sept, 11, 1934 2,427,429 Waite Sept. 16, 1947 2,495,210 Copping Jan. 24, 1950

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