US2963202A

US2963202A - Cold beverage vender

Info

Publication number: US2963202A
Application number: US766966A
Authority: US
Inventors: Donald L Dickinson; Sidney L Friedman
Original assignee: Continental Vending Machine Corp
Current assignee: Continental Vending Machine Corp
Priority date: 1958-10-13
Filing date: 1958-10-13
Publication date: 1960-12-06
Anticipated expiration: 1977-12-06

Description

1960 D. L. DICKINSON ETA]. 2,963,202

COLD BEVERAGE VENDER Filed Oct. 13, 1958 5 Sheets-Sheet 1 FIG I INVENTORS Do naid L Dickinson,

Sdgeyllrwalman W a. 912m ATTORNEY D. L. DICKINSON ETAL COLD BEVERAGE VENDER 5 Sheets-Sheet 2 Filed Oct. 13, 1958 w 4 74 Al Dona/id LhDI/c/wnsm'z,

fi'b'olrzig ll. Frv'edman W 5,, 31m

ATTORNEY Dec. 6, 1960 D. L. DICKINSON ETAL 2,963,202

cow BEVERAGE VENDER Filed Oct. 1a, 1958 5 Sheets-Sheet 3 FIG 3 FIG 4 1' 1 INVENTORS Dec. 6, 1960 D. L. DICKINSON ETAL 2,963,202

GOLD BEVERAGE VENDER 5 Sheets-Sheet 4 Filed 061;. 13. 1958 FIG 6 j (5 mm T U4 mum: Ill w III III INVENTORS Donaid L.Dic/2z nsom Siolnc:g I. E'o'edmaw ATTORNEY IIIIIIII United States Paten't'Q COLD BEVERAGE VENDER Donald L. Dickinson, North Miami, and Sidney L. Friedman, Surfside, Fla., assignors to Continental Vending gackhine Corp., Westbury, N.Y., a corporation of New Filed Oct. 13, 1958, Ser. No. 766,966

16 Claims. (Cl. 222144.5)

This invention relates to vending machines of the type adapted to dispense a selected one of several items, for example beverages like ginger ale, root beer, etc. More in particular, this invention relates to improvements in apparatus for automatically selecting and dispensing a desired item in accordance with the settting of manuallyoperable devices such as push-buttons on the vending machine cabinet.

In a preferred embodiment of the invention, to be described hereinbelow in detail, there is provided a coinoperated beverage vending machine arranged to dispense any one of three different beverages. This vending machine is of the type commonly referred to as pre-mix, i.e. the beverages are stored in the machine in fully prepared condition, as distinct from the postmix machines wherein the beverages are mixed after the customer has deposited his coin.

Vending machines offering multiple selections have, of

course, been proposed heretofore. However,- these prior machines have had a number of limitations which inhibited their commercial usefulness. For example, apparatus heretofore employed in such machines for automatically selecting and dispensing the desired item has been quite complex, with the result that prior vending machines have been unduly expensive to manufacture and also have been subject to excessive operational difiiculties.

Accordingly, it is an object of this invention to provide vending machine apparatus that is superior to such apparatus provided heretofore. It is a more specific object of this invention to provide improved selection apparatus for automatically controlling the dispensing of a desired one of several items. It is a still further object of this invention to provide selection apparatus that is simple in construction, positive and fool-proof in operation, and economical to manufacture. Other objects, aspects and advantages of this invention will be pointed out in, or apparent from, the following description considered together with the accompanying drawings, in which:

Figure l is a perspective view of a three-drink beverage vending machine including apparatus in accordance with the present invention;

, Figure 2 shows the vending machine of Figure 1 with its front door open to provide a view of the principal operating elements within the cabinet;

Figure 3 is a detail cross-section taken along line 3-3 of Figure 2 showing certain features of the automatic selection apparatus;

Figure 4 is a detail horizontal section taken along line 4-4 of Figure 2, showing further features of the selection apparatus;

Figure 5 is a detail vertical section taken along line 5-5 of Figure 4 to show the linkage mechanism used for controlling the automatic selection apparatus;

Figure 6 shows the linkage mechanism of Figure 5 in an alternate operating condition; and v Figure 7 is a diagrammatic view showing the beverage flow system and various valve arrangements for control- ICC 2 Referring now to the drawings, Figure 1 shows a threedrink beverage vending machine comprising a cabinet generally indicated at 10 and provided on its front panel with three push-

buttons

12, 14, 16 adapted to be presssed by the customer to select any one of three different beverages. The front panel of the cabinet also includes the usual coin slot 18 into which the customer drops a coin to initiate operation of the vending machine. After the proper coin has been deposited in the slot, and the desired selection made by pressing one of the push-

buttons

12, 14, 16, a mechanism within the machine automatically operates to drop a paper cup 20 onto the bottom of a recessed cup receptacle 22, and then pours the selected beverage into this cup through one of three

dispensing spouts

24, 26, 28.

As shown in Figure 2, these

spouts

24, 26, 28 are connected to respective dispensing units generally indicated at 30, 32, 34, and which comprise measuring chambers each normally carrying a quantity of beverage just sulficient to fill one cup. These dispensing units are provided with valve means including both inlet and outlet valves (to be described hereinbelow in more detail) which operate during a dispensing cycle to (1) open the measuring chamber outlet to the respective spout for a time sufficient to allow all of the beverage to flow down into the cup, (2) reseal the measuring chamber from the spout, (3) open the measuring chamber inlet to a corresponding one of three cold storage reservoirs 36, 38, 40 so as to refill the chamber with beverage, and (4) reseal the measuring chamber from the reservoir. The reservoirs and dispensing units all are contained within an insulated refrigerating chest 42 which maintains the beverages at the desired low temperature.

The valve means in the dispensing units 30, 32, 34 are operated by respective connecting means consisting of connecting

rods

44, 46, 48 which extend up through small openings in the top wall of the refrigerating chest 42 to beverage selection apparatus, generally indicated at 50. This apparatus serves, in a manner now to be described, to move any selected connecting rod through a reciprocating cycle in which the rod is (1) moved from its normal position to a lower position to operate the valve means for the purpose of emptying the corresponding measuring chamber into the cup, (2) moved back up to its normal position to seal the chamber from its spout, (3) moved to an upper position in which the measuring chamber is refilled from the respective one of the reservoirs 36, 38, 40, and (4) returned to its normal position to seal the chamber from its reservoir.

Referring now also to Figures 3 and 4, the upper tips of the connecting

rods

44, 46, 48 are bent over horizontally and fitted into holes formed in respective coupling devices consisting specifically, in this embodiment, of

quadrant plates

52, 53, 54 (referred to hereinafter as quadrants). These quadrants are provided with

hubs

55, 56, 57 which are rotatably mounted at axially-spaced intervals along a selector means comprising a shaft 58. Each of the hubs is freely and independently rotatable about the selector shaft, but the hubs are axially fixed in position with respect to the selector shaft by means of

stops

55a, 56a, 57a.

The selector shaft 58 is supported at its ends by

sleeve bearings

60, 62 which allow this shaft to be shifted backand-forth axially a short distance. Also rotatably mounted on the selector shaft is a drive member comprising a bail 64, which is prevented from moving longitudinally by abutting side bearing surfaces of the

sleeve bearings

60, 62. The inner edge of this bail is formed with axially-spaced tongues 66, 68, 70 arranged to selectively engage corresponding peripheral drive notches (as shown at 72 in Figure 3) cut in the

quadrants

52, 53, 54.

. Whenthe selector shaft 58. is .in a. position intermediate.

faesiaoaits two endpositions, as shown inFigure 4, the center tongue 68 of the ball 64 engages the drive notch of the center quadrant 53 so that any rotation of the bail about the selector shaft will produce :acorresponding rotation of this center. quadrant. the bail are, however, disengaged from the drive notches ofthe

end quadrants

52, 54, so that no motion can be transmitted from the bail to these quadrants.

In order positively to prevent any rotary movement of'the quadrants not engaged by the bail 64, a fixed locking bar 74 ismounted alongside the quadrants and par-- allel to the selector shaft 58. This bar selectively engages corresponding locking notches (as shown at 76 in Figure 3) formed in the upper edges of the quadrant plates, in accordance with the axial positioning of the selector shaft 58; In the Figure 4 positioning of this shaft, the locking bar engages the two

end quadrants

52, 54, but the center quadrant is free to move through a cut-out 78 formed in the center of the locking bar.

It will beevident from the above that if the selector shaft 58is shifted axially from its intermediate position (shown in Figure 4) to its left-hand end position, the left-hand quadrant 52 will engage the left-hand tongue 66 'o fthe bail and will be disengaged from the locking bar 74, while the other two

quadrants

53, 54 will be disengaged from the bail and engage the locking bar. Consequently, any rotary movement of the bail about theselector shaft will be transmitted directly to the lefthand quadrant, the other two quadrants remaining stationary. Alternatively, if the selector shaft 58 is moved to its right-hand end position, the right-hand quadrant 54 will be engaged bythe bail and disengaged from the lock ing bar, while the other two quadrants will be dis-.. engaged from the bail and held in position by the locking. Thus, in this position any rotation of the bailwill'.

bar. be transmi-tted, only to the right-hand quadrant.

As indicatedvin dotted-outline in Figure 7, during a dispensing cycle the bail 64 first is rotated down from its normal position about 30 degrees, then is reciprocated back through its normal position and up about 30 degrees,'and,finally is returned to its normal position until the next dispensing operation. This reciprocating motion is effectedby cam-operated drive means generally indicated at 80. This drive means includes a vertical drive lever 81 the upper end of which is bent over to a horizontal position and loosely fitted within a hole in alug 82 forming part of the bail. The lower end of the drive lever is operably connected to a crank arm 84 which is fastened to one end of a horizontal drive shaft 86. This drive shaft is supported for rotary motion by a frame 88 which is fastened to an interior partition 90 of thevending machine cabinet. The drive shaft 86 extends through this partition, and its remote end is secured to a cam follower 92 (shown in dotted outline in Figure 3) the free end of which engages the periphery of a cam 94. During a dispensing operation, this cam is. rotated clockwise by a drive motor 96 which is energi zed at'the start of the dispensing operation by the usual electricalcircuitry (not shown), and which is automatically stopped atthe end of'a single revolution. A cam spring 98 has one end wrapped around the drive shaft, and itsother end pressed against the top of the crank arm, in order to urge the cam follower into contact with the cam.

The operation of this portion of the selection ap-. par'atus is, briefly, as'follows: After the customerhas deposited-the proper coin in the machine andpressed oneof the push-

buttons

12, 14, 16, the drive motor'96 is automaticallyenergized to rotate the cam 94. After aishort angular rotation (during which the paper cup 20is dropped down onto the cup receptacle 22), the cam follower 92 moves down from the neutral cam lobe 94a to-the lower cam lobe 94b. Thus, the crank. arm 84-is rotatied "clockwise to pull the drive-lever 81;down

The end tongues. 66, 70. off

and thereby rotate the bail 64 about the selector shaft 58. This motion of the bail correspondingly rotates the selected quadrant (e.g. quadrant 53 when the selector shaft is positioned as shown in Figures 3 and 4), in a counterclockwise direction, and this quadrant correspondingly shifts the connecting rod 4 6,down a short distance to operate the valve in theoutlet of the dispensing unit 32 (Figure 2). Accordingly, the cold beverage in the measuring chamber of this dispensing unit flows down through the spout 26 and into the paper cup 20.

After a furtherperiod of time, sufficient to assure that all of the beverage in the measuring chamber has been dispensed, the cam follower. 92 rides up on an intermediate cam lobe 94c which returns the crank arm 84, the bail 64, and the quadrant 53 to. neutral position. Thus, the connecting rod 46 will close the outlet valve of the dispensing unit 32 so that the measuring chamber thereof can berefil-led... Shortly. thereafter, .thecam follower. rides, up on. an upper. cam lobe 94d, thereby. rotating the crank arm counterclockwise away from its neutral. position -This; motion rotates the bail 64 and.

the selected quadrant 53 clockwise, and pulls up the connecting rod 46 which, in turn, opens the inlet valve to the dispensing unit 26. The measuring chamber of this dispensing unit then is refilled (as willibe explained), andsubsequently the cam follower 92 drops down back to the neutral cam lobe 94a and the drive motor 96 is shut oft;

It may be noted that in the above-described motiontransm'tting arrangement, the selector shaft 58 does not form part of the actual transmission path, and hence does not have to be rotated with the quadrants. siderably simplifies the structure, since it eliminates the awkward problem of rotatably driving a shaft which also muetbeadapted' to move axially to set up the desired selectionsl Moreover, the use of independently rotat abl'e quadr'ants,-' driven-by a common bail, provides an advantageous and positive-operating coupling that is especially suited for 'use in a multiple-selection vendingselectTve actuation of three control means consisting specifically inthis embodimentof solenoids 102, 104,

106; These solenoids are individually energized (by the usual electrical circuitry not shown herein) by pressing the respective push-

buttons

12, 14, 16 on the front'panel of the vendingmachine cabinet. Spec'fically, the first solen oid.102 is actuated whenever the first push-button His-pressed, the second solenoid 104 is actuated whenever thesecond push-button 14 is pressed, and a third solenoid106 is actuated whenever the third push-button 16 is pressed.

The linkage mechanism includes a pair of T-links 108,. 110. which'are positioned side-by-side and are pivotally mounted at their center points 112, 114 (the center point being defined as the region of intersection between thervertiealleg andthe cross-arms. of the T-links). The

verticallegs

116, 118 of these links are provided at their ends with

U-shaped members

117, 119 which. are (see also Figure 3) fittedaround theselector shaft 58. These U-shaped membersare slotted to receive side'pins .120, 122 on the selector shaft, so that plvotalmovernent of, the,1inks;,.108, will produce a,correspondiiig'j axial movementoffihe. selector shaft.

The two

adjacent cross-arms

124, 126 of the'T-

links

108, 110 are-positioned in overlying relation, andzare formed with enlarged ends provided with corresponding alignedvertical slots128,130; A pin 132 extends through both ofthese slots and'is'seeuredto the armature, 184p? the center solenoid 104. This pin and slot ttaugenieiit} This con-.

i? operates as a lost-motion mechanism to permit relative movement between the two links. The remote cross-arm 136 of the left-hand T-link 108 is pinned directly to the armature 138 of the left-hand solenoid 102, and similarly the remote cross-arm 140 of the right-hand T-link 110 is pinned directly to the armature 142 of the righthand solenoid 106.

In operation, and assuming that the right-hand solenoid 106 has been energized (as shown in Figure 6), the armature 142 of this solenoid will be pulled down so as to rotate the right-hand T-link 110 clockwise. This rotation shifts the upper end of the vertical leg 118 to the right and accordingly moves the selector shaft 58 to its righthand position wherein the right-hand quadrant 54 is out of engagement with the locking bar 74, and (Figure 4) is engaged by the tongue 70 of the bail 64. Subsequent rotation of this bail will therefore rotate quadrant 54 to operate the right-hand dispensing unit 34 (Figure 2). The left-hand T-link 108 of course, also will be rotated clockwise due to the motion of the selector shaft 58, and the left-hand armature 138 will be pulled up a short distance while the center armature 134 remains in its normal position.

If the left-hand solenoid 102 is energized for the next vending operation, the operation of the linkage mechanism 100 will be the reverse to that described above. That is, the left-hand armature 138 will be drawn down carrying with it the cross-arm 136, thereby rotating the T-link 108 counterclockwise to move the selector shaft 58 to its left-hand end position. In this position, the lefthand quadrant 52 is engaged with the bail 64 and is disengaged from the locking bar 74, so that rotation of the bail will operate the left-hand dispensing unit 30.

If the linkage mechanism is conditioned as shown in Figure 6, and the center solenoid 104 then is actuated, the selector shaft 58 will be shifted to its intermediate position as shown in Figure 5. More specifically, when the center armature 134 moves down, the pin 132 carried by this armature will engage the lower edge of the slot 130 (Figure 6), and thus will rotate the right-hand T-link 110 counterclockwise so as to shift the selector shaft 58 to the left. This will cause the other T-link 108 to rotate counterclockwise so that its adjacent cross-arm 124 moves up until the bottom edge of its slot 128 meets the pin 132. The downward force of the center armature will, at this time, tend to rotate the left-hand link 108 clockwise and, at the same time, tend to rotate the right-hand link 110 counterclockwise. Since the two links cannot rotate in opposite directions (because of the common connection tthrough the selector shaft 58), the forces on these links 'will be balanced and they Will remain in their neutral position as shown in Figure 5. In this neutral position the center quadrant 53 will engage the bail 64, and will be disengaged from the locking bar 74. Accordingly, the motion of the bail will rotate the center quadrant to operate the corresponding center dispensing unit 32.

Figure 7 shows details of one of the dispensing units 30 to illustrate the manner in which the dispensing units are operated by the reciprocating motion of the corresponding connecting rod (44). The dispensing unit includes a measuring chamber 144 (shown filled with one cup of mixed beverage) the top of which is sealed by a flexible diaphragm 146 carrying a cylindrical block 148 adapted to move vertically within the chamber to follow changes in the liquid level. At the bottom of the measuring chamber is an outlet passage 150 which connects with the spout'24, and against which is pressed the tapered head of avalvebody 152 urged into seating position by a valve spring 154. The measuring chamber also includes an inlet passage 156 provided at its left-hand end with a reduced diameter orifice against which is seated a valve ball 158 urged into position by a second valve spring 160.

:The inlet passage 156 is connected by a pipe 162 to the reservoir 36 which contains; for example, a quantity of cold beverage equivalent to. about .12 cups. The reservoir essence g is surrounded by an aluminum block 164, and the pipe 162 is wrapped around the reservoir within this block. The lower end of the reservoir is connected by a tube 166 to the main storage tank 168 of the particular beverage to be dispensed from the dispensing unit 30, and the beverage to be dispensed from the dispensing unit 30, and the beverage within this storage tank is maintained under pressure by the usual carbon-dioxide fiask 170 which is connected to the tank by a tube 172.

In operation, when the connecting rod 44 is moved down by the quadrant 52, its lower end rotates a T-shaped rocking lever 174 counterclockwise about its pivot 175. The lower arm 176 of this lever engages a shoulder 177 on the valve body 152 and thereby moves this valve body to the right so as to open the outlet passage 150 to permit the beverage to flow from the measuring chamber 144 out through the spout 24. As the beverage flows out of the chamber, the flexible diaphragm 146 and the cylindrical block 148 move down substantially to the bottom of the chamber.

Subsequently, as the connecting rod 44 moves back up to its normal position, the rocking lever 174 is rotated clockwise to permit the valve body 152 to be shifted leftwardly by the spring 154 until its valve head seats against the outlet passage 150 and seals the measuring chamber 144 from the spout 24. Thereafter, the connecting rod moves up from its normal position and rotates the rocking lever still further clockwise. The upper arm 178 of this lever thereupon engages the valve ball'158 and moves it to the right so as to open the orifice in the inlet passage 156. At the same time, a spring-loaded catch-link 180 drops into a notch 181 formed in the side of the lower extension 182 of the connecting rod 44, so as to prevent the connecting rod from moving back to its normal position until this catch link has been shifted out of the notch. The catch-link is rotatably mounted on a control shaft 184 which passes through a slot 186 in the connect-3 ing rod and extends into the interior of the dispensing unit 30. This control shaft carries on its inner end a sensing finger 188 adapted to be engaged by the top of the cylindrical block 148, so as to rotate the control shaft and the catch-link counterclockwise when the measuring chamber has been filled with liquid.

With the inlet passage 156 open, beverage flows from the reservoir 36 through the pipe 162 and into the measuring chamber 144, due to the pressure provided by the carbon-dioxide flask 170. As the beverage flows into the chamber, the flexible diaphragm 146 and the cylindrical block 148 are moved upwards until the block actuates the sensing finger 188 to shift the catch-link 180 out of engagement with the notch 181. Thus, the connecting rod 44 is released for return motion to its normal position. Ordinarily, at this point in the timing cycle the cam follower 92 (Figure 3) will already have been disengaged from the upper cam lobe 94d, so that release of the connecting rod 44 permits the cam follower to drop back down onto the neutral cam lobe 94a and returnthe quadrant 52 to its normal position. Returning again to Figure 7, the downward motion of the connecting rod 44 in returning to its normal position operates to rotate the rocking lever 174 counterclockwise, permitting the valve, ball 158 to reseat against the orifice in the inlet passage 156, and thereby shutting off the flow of beverage into the measuring chamber.

Reverting to Figure 2, it Will be seen that each of the three reservoirs 36. 38, 40 is provided with a corresponding

storage tank

168, 190, 192, all pressurized from the common carbon dioxide flask 170. The storage tanks are outside of the refrigerated chest. 42 and hence maintain the beverage at normal room temperature.

The supply of paper cups are stacked in a cup container 194 which is of usual construction. One cup is automatically dispensed from the bottom of this container at the start-of each vending operation,. and is deposited in the top of a chute196 through which it slides .to the 7' cup. receptacle 22.. This'cupdispensing operation'may, forexa'mple, b e controlled by a lever 198 shown extending'up alongside the interior partition 90', and having on-its upper end a' cam follower to engage the cam 94' (Figure 3 )which is rotated by the drive motor' 96.

This disclosure explains the principles of the invention and-the best mode contemplated in applying such principles,so as to distinguish the invention from others; and

1. In' a vending machine of the type having a plurality ofdispensing units-each arranged when operated to dispense apredetermined quantity of material, and wherein control means are provided for actuating selection apparatus adapted to selectively operate said dispensing units in accordance with the conditioning of said control means; that improvement in said selection apparatus which comprises: a movable drive member, selector means mounted adjacentsaid drive member and shiftable into anyone of a plurality of predetermined positions relative to said drive member; a plurality of coupling devices carriedby'said selector means and mounted for independent movement with respect thereto, each of said coupling devices being providedwith' means to' selectively engage said drivemember in accordance with the posi-* tioning-of saidselector means relative to said drive member, whereby said drive member can transmit motion through said coupling devices without requiring any corresponding motion of-saidselector means other than the positioning of said selector means relative to said drive means; connecting means for transmitting the movement ofsaid coupling devices to said dispensing units respectively; and linkage means interconnecting said control means with said selector means to shift said selector meansinto. any one of said positions in accordancewith the-conditioning of said control means;

2'. .In a vending machine of thetype having a plurality of'dispensing units each arranged when operated to' dispcnse a predetermined quantity of material, and wherein control means. areprovided for actuating selection apparatus adapted to selectively operate said dispensing mien; accordance. with the conditioning of said control means; that improvement, in said selection apparatus which comprises: a movable drive member, selector means mounted adjacent said drive member and shiftable into anyone of'a plurality-of predetermined positions relative to said drive member; a plurality of coupling devices mounted on said'selector means at fixed spaced intervals therealong, said coupling devices being independently rotatable about said selector means, each of said coupling devices being provided with means to selectively engage said drive member in accordance wtih the positioning of said selector means relative to said drive member so that the selected one of said coupling devices may be rotatably moved by said drive member without-requiringany corresponding movement of said selector means; connecting means foreach ofj'said coupling devices respectively to transmit themovement otsaid'coupling devices; to; the corresponding onesof said dispensingunits; and linkage means interconnecting said control means with said selector means to shift said selector means into any one'of said positionsin accordance with theconditioning of said control means.

in'g unitseach:arranged-when operatcd'to dis {pense a'predetermined'quantity of material, andwherein. control'means are provided for actuating selection ap paratus adapted to selectively operate; saida dispensing-i units in accordance with the conditioning, of said controlmeans;. that improvement in said; selection apparatus' which comprises: a movable drive: member, selector means mounted adjacent said drive member and shiftableinto any one of a plurality of predetermined positions relative to said drive-member; a plurality of coupling devices carried by said selector means and? mounted; for

indepcndentmovement with respect thereto, each of said coupling devices being provided with meansto selectively engage said drive member iniaccordance with the 1105i! timing of said selector means relative to-said drive member; locking means mounted adjacent said selector means and selectively engageable with said coupling devices'rin. accordance with the positioning of said selector means,

relative to said drive member, said locking means,prc venting movement of all of said coupling devices except the one engaged with said drive member; connecting" means for transmitting the movement of said coupling devices to said dispensing units respectively; and linkage means interconnecting said control means with said selector means to shift said selector means into any one of said positions in accordance with the conditioning of said control means.

4. In a vending machine of the type having a plurality of'dispensing units each arrangedwhen operated to dis pense a predetermined quantity of material, andwherein a plurality of control means are providedfor actuating selection apparatus adapted to selectively operate said dispensing units in accordance with which of said control. means is actuated; that-improvement in said selection" apparatus which comprises: an elongateddrive member mounted for reciprocating movement 'in adirection transverse to the axis thereof, a selector shaft mounted parallelto and alongside said drive member and shiftableaxially into any one of a plurality of predeterminedpositions relative to said drive member; a plurality of coupling devices carried by said selector shaft, said coupling devices and said drive member beingprovided with cooperative means to produce selective engagement therebetween in accordance with the positioning of said selector shaft relative to said drive member, said selector shaft being operatively independent of said drive'member; connecting means for transmitting movement from said coupling devices to said dispensing units respectively;-

and'linkage means interconnecting said control means with said selector shaft to shift said selector shaft to any one of said positions in accordance with which of said control means is actuated.

5. In a vending machine of the type having a plurality:

of dispensing units each arranged when operated to dispense a predetermined quantity of material, and whereina plurality of control means are provided for actuating selection apparatus adapted to selectively operate said dispensing units in accordance with which of said control means is'actuated; that improvement in said selection apparatus which comprises: a selector shaft mounted foraxial shitting movement into any one of a plurality of: predetermined positions, an elongated bail extending: along the side of said selector shaft and rotatably mounted thereabout, means for preventing axial move ment' of said bail when said selector shaft is shifted axially; a plurality of coupling devices rotatably mounted on said "selector shaft,- said: coupling devices iand said ball being provided withcooperatinginterengageable meansto' produce selective engagement between-said coupling, devices and said bail in accordance with-the axial posi. tioning of said selector shaft relative to said b'ail; motor means forrotating said bail so as correspondingly to. rotate the engaged one of said coupling devices; connecting means for transmitting movement-fromisaid coupling devices'"tojsaid;dispensing unitsrrespectively; aildrrlinkage;

meansinterconnectingsaid;controlrmeahsawithpscidselek tor shaft to shift said selector shaft to any one of said positions in accordance with which of said control means is actuated.

6. In a vending machine of the type having a plurality of dispensing units each arranged when operated to dispense a predetermined quantity of material, and wherein a plurality of control means are provided for actuating selection apparatus adapted to selectively operate said dispensing units in accordance with which of said control means is actuated; that improvement in said selection apparatus which comprises: an elongated drive member mounted for rotation about an axis offset transversely from said drive member, a selector shaft mounted parallel to and alongside said drive member and shiftable longitudinally into any one of a plurality of predetermined positions relative to said drive member; a plurality of coupling devices carried by said selector shaft, said coupling devices and said drive member being provided with cooperative means to produce selective engagement therebetween in accordance with the positioning of said selector shaft relative to said drive member; a crank arm pivotally mounted adjacent said drive member and operatively coupled thereto to produce motion of said drive member about its rotational axis; cam means for reciprocating said crank arm about its pivot so as to transmit areciprocating motion through said drive member and to the selected one of said coupling devices; connecting means for transmitting said reciprocating motion from said coupling devices to said dispensing units respectively; and linkage means interconnecting said control means with said selector shaft to shift said selector shaft to any one of said positions in accordance with which of said control means is actuated.

' 7. In a vending machine of the type having a plurality of dispensing units each arranged when operated to dispense a predetermined quantity of material, and wherein a plurality of control means are provided for actuating selection apparatus adapted to selectively operate said dispensing units in accordance with which of said control means is actuated; that improvement in said selection apparatus which comprises: an elongated drive member, drive means for reciprocating said drive member in a direction transverse to its axis, an elongated selector shaft mounted parallel to and alongside said drive member, said selector shaft being supported for longitudinal shifting movement into any one of a plurality of predetermined positions relative to said drive member; a plurality of coupling plates rotatably mounted at fixed intervals along said selector shaft and transverse with respect to the axis thereof, each of said coupling plates being formed with a peripheral drive notch, a plurality of protruding tongues on said drive member adapted to selectively engage the respective drive notches in said coupling plates in accordance with the positioning of said selector shaft relative to said drive member, whereby the movement of said drive member rotates the selected one of said plates about said selector shaft; connecting rod means for transmitting the movement of said coupling plates to said dispensing units respectively; and linkage means interconnecting said control means with said selector shaft to shift said selector shaft to any one of said positions in accordance with which of said control elements is actuated.

8. Apparatus as claimed in claim 7, wherein said coupling plates are formed with respective peripheral locking notches; and a fixed locking bar extending parallel to said selector shaft to selectively engage said locking notches in accordance with the longitudinal positioning of said selector shaft relative to said locking bar, said locking bar preventing rotational movement of all of said coupling plates except the one coupling plate engaged with said drive member.

9. Apparatus as claimed in claim 7, wherein said dispensing units include valve means operable by said connecting rod means in one position thereof for refilling said dispensing units after a dispensing operation has been completed, catch means for holding said connecting rod" 10. In a vending machine of the type having at least three dispensing units each arranged when operated to dispense a predetermined quantity of material, drive means for furnishing the motive power for operating said dispensing units, selector means mounted adjacent said drive means and shiftable into any one of a plurality of predetermined positions relative to said drive means, a plurality of coupling devices carried by said selector means, each of said coupling devices being provided with means to selectively transmit movement from said 'drive means to said dispensing units respectively in accordance with the positioning of said selector means relative to said drive means; that improvement in an apparatus for shifting said selector means which comprises: first, second and third control means individually actuable in accordance with the desired selection; a first link connecting said first control means to said selector means for shifting said selector means in one direction when said first control meansis actuated, a second link connecting said second control means to said selector means for shifting said selector means in the opposite direction when said second control means is actuated; and means coupling said third control means to said first and second links for shifting said selector means to an intermediate position when said third control means is actuated.

11. In a vending machine of the type having at least three dispensing units each arranged when operated to dispense a predetermined quantity of material, drive means for furnishing the motive power for operating said dispensing units, selector means mounted adjacent said drive means and shiftable into any one of a plurality of predetermined positions relative to said drive means,'..

a plurality of coupling devices carried by said selector means, each of said coupling devices being provided with accordance with the desired selection; a first pivotallymounted link connecting said first control element to said selector means for shifting said selector means in one direction to a first end position when said first control element is actuated, a second pivotally-mounted link connecting said second control element to said selector means for shifting said selector means in the opposite direction to a second end position when said second control element is actuated; a lost-motion mechanism coupling said first and second links together and permitting relative movement therebetween; and means connecting said third control element to said lost-motion mechanism and operable to return both of said links to a neutral position so as to shift said selector means to a position between said two end positions when said third control element is actuated.

12. In a vending machine of the type having at least three dispensing units each arranged when operated to dispense a predetermined quantity of material, drive means for furnishing the motive power for operating said dispensing units, selector means mounted adjacent said drive means and shiftable into any one of a plurality of predetermined positions relative to said drive means, a plurality of coupling devices carried by said selectormeans, each of said coupling devices being provided with means to selectively transmit movement from said drive means to said dispensing units respectively in accordancewith the positioning of said selector means relative to said drive means; that improvement in an apparatus for shifting said selector; means which comprises: first; second-t-and third control elementsindividually-actuable in accordance with the desired selection; a: first pivotallymounted link connecting said firstcontrol element'tosaid selector means for shiftingsaid selector means in" one slots; av pin extending through bothof'said slots; and

means connecting saidthird control element to. said1pin i105 rotate both ofsaid links in opposite directions to a.

neutral position when said thiIdICOflll'Ol element is actuated, whereby said selector means is; shifted I to an intermediate position between said two end positions;

13. In a vending machine of the type having atleast three dispensing units each' arranged when operated to dispense a predetermined quantity of material, drive means for furnishing the motivepower for operating said dispensing units, selector means mounted adjacent said drive: means and shiftahle into any one of a plurality of predetermined positions relative-to saiddrivemeans, a

plurality of coupling devices carried by said selector means; each of said-coupling; devices being provided'with means toselectively transmit movement from said drive means to said dispensing units respectively in accordance"- with the positioning: of said selector means-relative to said: drive means; that: improvement inart-apparatus. i for shifting said :selectori meansuwhich comprises: first; sec

ond. and third' control elements: individually actuable in accordance-with the'desired selectionpafirst T-link'piw oted about it's-:ce'nter point with-the leg thereof connected" to'saidselector means a second T-linkpositioned alongside said first'T-link: and pivoted about itsucenter'point withthe leg thereof connected to saidselector means; av lost-motion mechanism coupling the adjacent armsof said'first and secondTdinks together; means connecting said first control element to the remote arm of said first T'-link so that actuation of said first control element shiftssaid selector means inone direction, means-c011 nectingi the remote arm of said second T-link to said second control element so that-actuation-ofsaid second control element shifts saidzselector means in theo'pposite direction; and means--connecting"said-.third control element to said lost-"motion mechanism and arranged.- to return both ofsaid T-links and said selector means to aneutral position when said third control element iseactuated:

14. Apparatus as claimed in claim 13, wherein said selector means comprises-a-shaft-mounted for longitudinal shifting movement, said first and second T-links being mounted with their legs substantially perpendicular to the axis of said shaft'and their crossearms" substantially parallel to the axis-of said shaft.

15. Apparatusas claimed in claim-l4, wherein said. lost-motion mechanism comprisesaligned slotsfomnedim said adjacent cross-arms respectively, said slots'extending generally'parallel to said -T-link legs; and pin means ex.-

tending: through both of said slots and connected to said:

third control elementysaid first, second and third control elements beingpositioned to move said cross-armsindirections'substantiallyparallel to'the legs of saidT-links:

16. In a vending machine of the type havinga-plu rality of dispensing units, each' arrangedwhen operated to dispense a". predetermined quantity of material, and wherein control meansare provided for actuating a selection apparatus adapted to selectively operate one of said dispensingunits inaccordance with the conditioning of said control means; that improvement in said selection apparatus which comprises: a selector shaft shiftable axially into anyone of a plurality of predetermined positions; a drive member mounted alongside said selector shaft; means mounting said drive member to provide movement thereof'in a: direction=transverse to the'axis of-said selector shaft; a plurality of coupling devices carried. by said selector shaft; motion-transmitting means for coupling said drive member to said coupling devices to oscillate the latter inresponse to transverse movement of said drive member; linkage means interconnecting said control means with said selector shaft for shifting said selector'shaft into any one of its positions, s'aidlinkage means'beingoperative independently of said motiontransmittingmeans; and connecting means for transmit- 'ting movement from said coupling devices tosaid-dispensing units in accordance with the axial'positioningof said selector shaft:

References'Cited in the file of-thispatent UNITED STATES- PATENTS 21 572541 Thompson et ah Oct. 23, 1951