DE1055268B - Electric control for vending machines - Google Patents

Description

The invention relates to an electrical control for vending machines in which the insertion of Coins of different types in any order, preferably through just one slot, takes place using selectors and relays known from telephony technology The amount thrown in is constantly totaled and the desired goods are released and, if necessary, the overpaid amount is returned only takes place when the amount thrown in has reached or exceeded the price of the goods concerned. There are already arrangements with voters and relays known, in which the voters the amounts of total inserted coins. With one of these systems, the voter can only choose two different ones Add up coin types up to the amount of the only goods to be issued. For other plants are Different summation selectors provided for each coin type. The number of. Coins of different Values that can be thrown in are generally only one or two and extend only with two known systems on four types of coins. The return of the overpaid amounts is generally only possible in smaller coins in known arrangements, whereby the return containers are easily exhausted. Only with one These systems can also take a coin as a change after inserting a larger coin that doubles the amount The price of the goods. This machine that only issues a single product permitted, allows the rest of the sum, which is larger than the price of the goods, to be returned only to the insertion a single coin. Different coins whose values are summed up while keeping the amount the goods cannot be thrown in. Furthermore, the known apparatus for the money totaling voters on, who, in case the money return does not have to be set manually, also initiate the return of the remaining money.

The invention eliminates the disadvantages of the known controls for vending machines by creating an electrical control that allows any number of types of coins, at least six, to be inserted through just one slot, to add the coins continuously, a larger number of goods with different prices, independently of the inserted coins, and to use all other types of coins except for the highest to return the remaining money. This is achieved by the fact that a single summation selector is provided for all types of coins, which adds up the amount inserted in a specified base type of coin, which can also be higher than the smallest type of coin allowed for use, and that electrical control
for vending machines

Applicant:

General telephone factory Winkler & Co., Hamburg 11, Admiraiitätsstr. 71-72

Horst Kempcke, Hamburg-Bramfeld,
has been named as the inventor

a return selector is available, which starts after the goods delivery process has been initiated and between on the one hand by the paid contribution, ao on the other hand by the price of the selected goods marked switching positions switches on a differential payment mechanism controlling the change dispenser. In a further embodiment of the invention, the summation selector is for all inserted coins a relay chain assigned to the when a coin of a specified amount is inserted Summation selector once and, in the case of coins, the multiple amount of the specified coin type at the front Summation selector around the ratio between the inserted and the specified coin types controls corresponding steps and depending on the multiple amount of the thrown in to the specified Coin type expires once or several times.

Further details and features of the invention emerge from the following description in as an embodiment of the invention, the electrical circuit diagram of a vending machine for dispensing is described by travel and admission tickets.

To make it easier to find the individual electrical switching elements in the drawing, Numbers from 1 to 24 as abscissa and letters A to R as .Qrdinaten on the edges of the drawing plotted that in the description as indicated in brackets. Coordinates used to to point out certain parts of the circuit.

The vending machine to be described below enables the delivery of goods with a price from 10 Pfennig to 5 DM with a tiered price from 5 to 5 pfennigs, the difference between the amount inserted and the price of the selected goods within the stated amount limit can be repaid. It should be pointed out right away that the Choice of coin types is purely arbitrary

809 790/41

and that the present invention is also applicable to vending machines with larger or smaller coin type ranges.

1. Money slot

The money is inserted for all coins through a common slot, from which from which the money is passed through a sorting device and a coin validator. The sorted and checked When coins fall in the money slot of the vending machine, they touch a coin contact, which is actuated evaluated for the consolidation process will. After passing the coin contact, the inserted coins are sorted according to coin softness into corresponding storage tubes and remain there until a goods drawer is pulled or an actuation of the corresponding goods delivery head, a product is selected. After this Selecting the goods, the money slips out of the storage tubes into the tubular remaining money storage, from which the remaining money will be returned after the end of the goods delivery process can. If the remaining money storage is overfilled, the money slides out of the first-mentioned coin storage tubes directly into the cash register. On the other hand, before the operation of the delivery of goods is usually carried out on each When the cash return button provided by the machine is pressed, the coin storage tubes are emptied into the return plate. The measure described above ensures that the vending machine his assistance with remaining money is constantly supplemented by the paid-in money the buyer receives.

Special contacts raa, rba, rca, rda (L 23) are arranged near the bottom of the remaining money storage tubes, which can be used in the event of an imminent exhaustion of the remaining money of a certain type, i.e. for the remaining money storage containing 10-pfennig pieces, if fewer than four coins are contained to bring this state to the attention of the buyer visibly with a display panel L 4.

A 52-part telephone dialer ZW with five contact levels a, b, c, d and e is used to add up the amount paid. The summation selector ZW is connected in such a way that each of its switching steps corresponds to a paid amount of 10 pfennigs, so that maximum amounts of up to 5 DM can be registered.

By sorting the inserted coins in advance, the 5-pfennig pieces get to the. Coin contact I, the 10-pfennig pieces to the coin contact II, the 50-pfennig pieces to the. Münzkoutaktlll, the 1 DM pieces to the. Coin contact IV, the 2 DM pieces to the coin contact V and the 5 DM pieces to the coin contact VI (Q 2 to Q 9).

First of all, it should be assumed that a 10-pfennig piece will be thrown in. The coin contact II closes here and the coin contact relay M is excited via the normally closed contact tm ^n. At the same time, the relay TM , which disconnects the Ji relay , is also excited by the normally open contact m ^1. The relay TM only has the task of preventing excessive holding of the M relay and the other relay arrangements connected to this relay when the coin jams at the coin contact. The normally open contact m ^m (Jl) advances the switching magnet ZW of the summation selector by one step. If the inserted 10-pfennig coin is the first coin ever inserted, all switching arms of the summation selector move to the first switch position, with the switching arm d de? - summation selector ZW (LS) the AG relay, which is used to prepare the release relay Tension is applied. After a further movement of the switching arm d , the 7? G relay continues to hold itself via its self-holding contact rg ^m until it is made to drop again at the end of the entire sales process by opening the normally closed contact rs ^{m 1.} The release relay is prepared by the normally open contact rg ¹ (H 9) of the relay RG, which simultaneously connects a positive circuit via the normally closed contact gr ^l , the normally open contact rg ¹ , the normally closed contacts rr ¹ and kr ¹ and the return button RiI to an indicator lamp Ll Brings up light, which illuminates a light panel with the inscription "You paid" above the display markingeii for the deposited amount. The other contacts of the cf level of the ZfF selector are from the 10th to the 19th step on a display board »1 DM«, from 20 '. up to 29 paces on a scoreboard »2 DM«, from 30 '. to 39th step on a display board »3 DM«, from 40th to

49th step to a display board "4 DM", and on

50th step connected to a display board »5 DM«, each of which is illuminated by an incandescent lamp L2. Furthermore, advancing the contact arm e of the summation selector ZW by one step causes an indicator lamp L 3 (N / O 7) to light up a display "0.10 DM".

If a 5-pfennig piece is thrown in, it activates the coin contact I and thus energizes the coin contact relay L (09). The current flow through the relay L takes place from plus via the normally closed contact rs ¹¹¹ !, the coin contact I, relay L to minus. The working contact; ¹ (014) energizes the ^ PF relay (NtS). The current is run from plus via the normally closed contact biiP-, the normally open contact P, the normally closed contact bw ¹ ! via the relay AW to minus. The relay AW attracts its armature and with its normally open contact aw ^l switches on the .BPF relay, which however cannot attract because it is connected in parallel to the positive voltage source. After the 5-pfennig piece has passed through, the relay L drops out again and opens its normally open contact P-. This opening of the make contact P energizes the .BPF relay in series with the relay AW , the current flow is from minus via the ^ J'F relay, the make contact aw ¹ , the UJF relay and the break contact au ¹ after plus. The SFF relay inserted in its tightening its changeover bw ¹ 1 and bzti ¹¹ microns, so that in a repeated actuation of the Münzkontaktes I and an actuating its working contact P is actuated now the BW Re \ a.is alone through a circuit, which takes place from minus via the relay resistor BWV, the contacts bw ¹¹ , P, bw ¹ !, the BW relay and the contact au ¹ to plus. The ^ iPF relay drops out. While the ^{normally open contact / 111} (R 7) of relay L cannot perform any function when a 5-pfennig is inserted for the first time, relay M is energized when a 5-pfennig is inserted, and a 5-pfennig is activated when it is inserted a second time -Piece also the normally open contact of the BW relay bw ^1T1 2, which is in series with contact P ¹¹ , is closed. The excitation circuit for the M relay runs from plus via bw ^m 2, P ¹¹ , tw ¹¹ , M relay to minus. Throwing in a 5-pfennig piece twice has the same effect on the circuit as throwing in a 10-pfennig piece once, and for two 5-pfennig pieces the ZW-W'iblet is increased by one Switching step advanced.

The one-time actuation of the L-relay, which is accompanied by an excitation of the ^ ίί ^ -Rela.is, has the consequence that its changeover contact at ¹¹¹ 5 (08) is switched, so that the corresponding contact lamella of g -Level of the summation voter assigned display organ, which shows a full. 10 pfennig value is displayed, is switched off and a light bulb turns on, which indicates an amount increased by 5 pfennigs. The circuit for the. The latter indicator lamp comes from plus via the break contact rs ^m l, the switching arm of the selector ZW of the ^ level, the corresponding contact lamella, the indicator lamp indicating the 5-pfennig amount, the folded aw ^m contact of the .4W relay and its resistance winding AWV after minus.

From the foregoing it can be seen that the summation selector ZW is switched one step further both when a 10-pfennig piece and when two S-pfennig pieces are thrown in.

If a 50-pfennig piece is thrown into the coin slot, this actuates the coin contact III, which then energizes the relay N belonging to it. Relay N (Q 6) picks up its armature and then holds itself via its self-holding contact n ^l , via a circuit from plus via contacts pr ^l , η ^τ and relay N to minus itself. For the duration of the energization of relay N its normally open ^{contact M- 11} (Q 10) is also closed, so that the holding relay H (Q 12/13) remains energized via a circuit from plus, contact riP-, relay H to minus for the same duration. With a further normally open contact n ¹¹¹ (A 6) of the relay N , a first position of the tracking selector MW is prepared for the test relay PR (CS).

The tracking selector MW, the effect of which will be described in detail below, is a 10-part selector, on its first contact blade via a normally open contact 11F ¹ , on its second contact ^{blade via a normally open contact £ ni} , on its fourth contact blade via a normally open contact p ¹¹¹ and on its tenth Contact lamella is connected ^to the Pi? Relay via a normally open contact q. Actuating the follow-up selector MW up to the first contact lamella corresponds to throwing in a south-penny piece, up to the second contact lamella of a 1-DM piece, up to the fourth contact lamella of a 2-DM piece and up to the tenth contact lamella to inserting a 5 -DM piece.

When the Η relay is energized, its & ¹ 1 contact (F 4) also closes, which puts the positive voltage source übar the normally closed contact X ¹ I (F 11) on the switching arm α- of the selector ZW . Depending on the position of the selector ZW , when the W-X contact is closed, the relays A, B, C, D, E and F of a relay chain, which are connected to the α-level of the selector ZW in multiple switches, are excited. Each of the relays A to F is provided with a self-holding contact o ¹ , b ¹ , c \ d ^l , e ¹ , f ^l , which leaves the relays of the relay chain in this state after a single excitation as long as the normally closed contact X ¹ I is closed. By closing the contact A ¹ I, the rectifier Gr 2 also excites the ZX relay, which is used to initiate a high-speed movement of the selector ZW. Between the rectifier Gr 2 and the ZX relay, a connection to a positive voltage source is provided via a normally open contact rs ^m 2 , which serves to let the ZW selector run through quickly until it reaches its starting position at the end of the sales process. Assuming that the contact rs ¹¹¹ 2 is closed, the rectifier Gr 2 prevents the positive voltage source applied there from being able to excite the relays A to F of the relay chain via the contact arm of the α-plane of the ZH ^ selector.

When the ZX relay is energized, its normally open contact zx ⁰¹ (H 1) closes and thus causes the actuating magnet ZW of the summation selector via the normally closed contact w ¹¹ , the normally open contact zx ^m , the normally closed contact x ¹¹¹ 1 and through one or more of the normally closed contacts α ¹¹ 1, 5 ¹¹ I, c ^ll l, d ⁿ l, e ^ll l or f ^a X is fed with a 50-period half-wave current. This 50-period half-wave current is generated in the power supply unit, which is to be described below, and is tapped from a corresponding connection terminal (C 21). The supply of the impulse current triggers the ZW-Wihler to run rapidly , which continues by five steps. After having covered five steps, all relays A to F have been energized one after the other and are kept in the energized state ^{by their self-locking contacts α 1} to f. Simultaneously with an excitation of the relays A to F , their normally closed contacts U ¹¹ I to / ⁿ l (72 to -75) are opened, so that after five selection steps the ZI-F selector is again disconnected from the 50-period current and stops .

For controlling of these five steps the selector ZW are erfoirderlich six relays A to F, da) e ^ to the starting position of the Z choice menu when the contact closes W 1 of the relay is energized already and other during the quick run of the selector five relays for attracting must be brought before the voter comes to a halt again.

When relays A to F of the relay chain are tightened, their working contacts a ⁿ 2 to / ⁿ 2 (M 5/6/7) are also energized one after the other, so that an excitation circuit for the X relay (NS) is closed after all relays in the chain have been energized will. The X relay is used to drop the relay chain A to F after a full cycle. When relay X is excited, its self-holding contact x ^l 2 also closes, which is connected to positive voltage via the normally open ^{contacts aP 1} - to f ^m and zx ^{l connected in parallel.} Furthermore, the X relay opens its normally closed contact x ^l 1 (FlT) when it is excited, so that all relays A to F in the relay chain and also the ZX relay drop out. Also, the normally closed contact x ¹¹¹ ! (H2) of the X relay immediately removes the 50-period pulse voltage from the IF selector so that it stops. ^When the aforementioned relays drop out, the parallel contacts-α ΙΠ to / ^nI and zx ¹ open, so that the X relay then also drops out again.

Switching the X relay on and off also has the consequence that its switching contact ^ ¹¹ I (A3) is thrown so that the tracking selector MW is excited via the break contact ha ⁰¹ and moves one step further. By moving the follower selector to the first contact lamella of its α-level, a circuit of plus is established via the contact arm of the α-level of the .MTF-Wätülers, whose first contact lamella, the normally open ^{contact rP 1} , the closed normally closed contact pr ¹¹¹ 1, the Pi? -Relay (CS) energized after minus. When the P2? Relay is energized, its normally closed contact pr ¹¹¹ ! Opens, and the relay PR is then energized with a lower current via its series resistor PRV . By closing the self-holding contact pr ^m 2 (DS) and the contact arm of the & level of the MW selector remains

the PJ? relay in all positions of the MW selector with the exception of the initial position in the energized state. Furthermore, by energizing the Pi? Relay, its normally closed contact pr ^l (R2) is opened, so that the relay JV and thus also the Ji-ReI ais via the opening contact n ^{11 is de-energized.} Through the normally open contact pr ¹¹ (A 4) of the PR relay, a 50-period half-wave current is applied to the tracking relay MW; this excitation takes place via the contact k ¹¹ , the normally open contact pr ⁿ , ^{the switchover contact Jr 11} I, which has returned to its rest position, and the winding of the tracking selector MW to minus. As a result, the tracking selector MW runs through its entire contact level. The switching arm b of the tracking selector MW is via the normally open contact pr ^m 2 of the relay Pi? applied to positive voltage and, after it has returned to its original position, excites the relay K (C 6) via the output contact lamella, which when it is excited disconnects its break contact k ⁿ (A £) , so that the tracking selector is interrupted by the impulse current MW stops again. After the tracking selector MW has reached its starting position again, the P7? Relay also drops out again, with the ones already explained above. Switching effects via the relays JV and H.

The further provided if ^ relay (C 4), which is energized when the X relay is energized, whose normally open contact x ^lll 2 and the <5 contact belonging to the tracking selector are briefly energized, has the task of its normally closed contact ha ^m (A2) to prevent the tracking selector MW from being connected to voltage by one step longer when the switch is switched on again, but is automatically switched off again immediately after the switching armature of the tracking selector MW is tightened by the (5-contact located on the armature). When it is excited, the iM relay maintains itself via its self- holding contact foaF-2 until the Z relay drops out again and its x ^m 2 contact opens.

When coins with an amount of DM 1, DM 2 or DM 5 are inserted, the coin contacts IV or V and VI are actuated and the relays O ₁ P or Q assigned to these contacts respond. and hold themselves in a manner analogous to the relay JV via their self-holding contacts o ¹ , p ^l , q ¹ and energize the ff relay with their work contacts o ¹¹ , p ⁿ , q ^u. The relay chain A to F is then started in an analogous manner and the ZPF selector is run at high speed. However, after a single run of the relay chain A to F, the response of the relay X has the consequence that the Jkf PF-Wähl is not only switched once by one step, but either twice, four times or ten times before the PJ? Relay respond can and terminate the registration process. After each advancement of the selector arm of the α-level of the MW selector by one step, the relay chain A to F is actuated again, which advances the ZW selector by five steps. Only after the α-arm of the MW selector has reached the position that is ^{connected to the PJi relay by the contacts o in} , p ¹¹¹ or q ^m does the switching of the ZW selector stop, and the corresponding can then 0, P, Q and H relays return to their original position.

To prevent the coins from being thrown into the coin slot in too rapid succession, a blocking relay SP (M 23/24) is provided, the excitation of which has the consequence that the coin insert seat SO 'is closed with a slide until the previous one The totalizing process is finished, d. L · until the JT relay, which energizes the blocking relay Sp with its ^{normally open contact & r} 2, has dropped out again. In the event that a coin gets stuck on the coin contact, the blocking relay SP is also ^{energized via the normally open contact fw m} (M 24) of the TM relay, thus keeping the coin slot closed. As mentioned above, the relay is TM (RS) always

ίο attracted when a coin gets stuck on coin contact II. A blocking magnet SM (F 22) is used to close the coin slot, in whose exciter circuit two normally closed contacts sp ⁿ and sk ⁿ are connected in series. If the relay SP is energized, its normally closed contact sp ¹¹ opens, and the blocking magnet SM is de-energized and closes the coin slot until the JTP relay is de-energized again. The coin slot is also blocked when the relay SK (£ 20) is energized, which always responds when a fuse in the power supply unit has failed and the machine is no longer able to work. The function of the SK relay is explained in more detail below in the description of the power supply unit.

2. Approval of the goods offered for sale

The goods offered for sale by the machine are released with release relays, which are preferably interchangeably connected to the contacts of the level 6 of the ZPF selector with plug connections St known per se. For the control according to the invention, a release and a marking relay are required for each price of goods demanded by the machine. In order to explain the operation of the release relays, only two release relays FA and FB (GIH7) are shown in the drawing, of which relay FA is provided for a price of goods of 20 pfennigs and relay FB for a price of 25 pfennigs, for example. Correspondingly, the J ⁷ ^ -ReIaIS is connected to the second contact lamella of the fr-level of the ZW selector according to the price of the goods. The contact arm of the ö-level is connected ^{to positive voltage via a normally closed contact Aa 11} I of the J-fvi relay, while the second terminal of the iM relay is connected to minus. This circuit has thus ¹ includes the result that, when there is the contact b placed on the second contact blade, the FA-H held relay is energized and its self-holding circuit with the contact fa ^l via the series contacts rr ^l, rg ¹ and gr ^T to positive . This ensures that the release relay FA is energized when 20 pfennigs are inserted and also remains energized when a coin is subsequently inserted. With its ^{normally open contact} / α ΙΠ (G 14) it prepares an excitation circuit for the! ^ Relay assigned to it, which is only excited when its drawer contact Sch (GlS) is actuated. In order to ensure that only one drawer of the vending machine can be pulled in spite of energization of a plurality of release relays, all drawer contacts are connected in series so that when one of these contacts is actuated the other contacts are ineffective.

Since the switching arm of the summation selector ZW is always in the same place when inserting 20 pfennig or 25 pfennig, the second contact lamella must also be connected to the FB ssi release relay intended for the 25 pfennig goods. As can be seen from the drawing, the relay FB is not immediately on

connected to the negative pole of the voltage source, but in between there is still the working contact bvß-2, which, as above when inserting the 5-pfennig pieces, is only closed when a single 5-pfennig coin is in the machine was thrown in. The FS relay also holds on to its self-holding contact fb ¹ and the series connection of contacts rr ¹ , rg ¹ and gr ¹ after a single excitation. In the event that three 10-pfennig pieces have been thrown in and thus the 25-pfennig position of the totalizing counter has been skipped, it must also be ensured that the 25-pfennig goods also with the third contact of the & -level of the ZPF- Voter can be excited. For this purpose the FS relay is divided into two windings, one winding of which is connected to the second and the other to the third contact of the selector level &. A marking relay FS is assigned to the FS relay in a similar way to the FA-R relay , which is prepared by the normally open contact fb ^{111 in} order to be energized with the drawer contact Sch assigned to it.

If any drawer of the vending machine or a corresponding actuation key is operated, the excitation circuit for the associated marker relay closes and the relay Fi? or FS . Via the self-holding contacts for ¹ or / ^ ¹ I, the respectively excited marking relay remains in the attracted state until its excitation circuit is disconnected again by the normally closed contact zx ^11. An excitation of a marker relay also has the consequence that the relay RR is excited and picks up when the normally open contacts for ¹¹ 1 (/ 14) or fs ⁿⁱ 2 are closed. The excitation of this relay RR has the immediate consequence that its normally closed contact rr ¹ (H 9) opens and thus the release relays FA and FB fall and the indicator lamp Ll (GH) goes out.

If the goods drawer is pulled out completely, a relay KR is energized by a contact Schi (/ 23/24) assigned to the armature of the release magnet FM , which then keeps itself energized via its self-holding contact kr ⁿ until the normally closed contact zx ¹¹ interrupts the excitation circuit. An excitation of the KR relay has the consequence that its normally open contact kr ¹ (P 21) closes and actuates a magnet M 2 , which allows the deposited money to slide out of the storage containers into the cash register and fills the remaining money storage container before the remaining money is paid out . In order to ensure in any case that several drawers cannot be pulled, a lock is provided for each goods drawer, which can be released with a release magnet FM (R 16/17). The release magnet FM is activated by the marker relays Fi? and FS with their normally open ^{contacts for m} or fs ¹¹ (R 16/17) excited. However, this energizing circuit for release magnets runs over a normally closed contact kr ¹¹¹ of the POS relay KR (K 22) so that the deposited amount after pulling a drawer and the cashing, which after excitation of the POS relay KR is performed by the drawer contacts Sch ^1, the Voltage from the release magnet is removed again by means of the normally closed contact kr ^111.

3. Return of the paid-in money before delivery of the goods

If the buyer wants to cancel his intended purchase or have the money back for any other reason, a return key Rü (HU) is provided for this purpose, which when you switch over the contacts gr ¹ (H9), rg ¹ , rr ¹ , kr ¹ , the " Return, return contact Rü energizes the money return relay. When it is actuated, the Gi? Relay with its changeover contact gr ^ll l switches a charging capacitor Cl parallel to it, so that the money return relay GR is held for a short time. The charging of the capacitor C 1 occurs before arousal

ίο of the relay GR via the contacts gr ¹ , rg ¹ , rr ¹ , kr ¹ and the resistor Wi. Its normally closed contact gr ¹ is also separated like the previously mentioned normally closed contact rr ¹ , so that the voltage supply for all release relays is interrupted in the same way as by removing the goods by means of the drawer contact Sch and the relay RR. It can also be seen that the series connection of the contacts rr ¹ and gr ^{1 means} that no money can be returned after the goods have been removed. A working ^{contact ze / 111 of} a relay W (P 5) is connected to the money return contact Rü , which causes the entire deposited money to be ejected if coins with an amount exceeding the maximum amount of DM 5 are inserted. The relay W is accordingly connected to the 51st contact lamella of the ZW selector. The actual money return through the relay Gi? takes place by closing the normally open contact gr ¹¹¹ (F 23), which actuates a magnet Ml, which then guides the coins of the deposited amount accumulated in the storage tubes into the money ejection funnel.

An actuation of the money return relay Gi? but also has the consequence that its normally open contact gr ^u 2 (M 18) closes. As a result, the winding of the relay RS to minus the relay i? 6 * is attracted and its contacts are actuated via a circuit from plus via the normally closed contact x ^SL 2, the normally open contact gr ^1I 2 _{J, the winding of the relay RS to minus.} The relay RS _} , which will be discussed in more detail below, has the consequence that its normally open contact rs ^m 2 (F4) closes and thus energizes the ZX relay. As already explained above, the excitation of the ZX relay causes the summation selector ZW with the 50-period half-wave pulse to accelerate via the normally open contact zx ^m (Hl) , so that it returns to its starting position in the shortest possible time and the vending machine ready for actuation again. The rapid movement of the Z? F selector to its starting position is interrupted as soon as the switching arm of the (2 level has reached the 52nd contact lamella. On this 52nd lamella the <2 arm places over the closed normally open contact rs ^x 2 (MS) Voltage to the X relay, which with its normally open contact x ^m 1 (H2) disconnects the alternating current to the ZJf selector.

4. Finding the difference between the
paid amount and the price of the selected goods

A money return selector RW, which has four contact levels a, b, c, d each with 50 or 52 contacts, is used to determine the difference between the paid amount and the price of the selected goods, ie to determine the remaining money to be returned. This selector RW (H20 / 21) is after the removal of the goods, ie after closing a drawer contact Sch and the response of one of the relays FR or FS and the thereby excited relay RR (/ 13) with its _{normally open contact rr} m (if 20) applied a 50-period half-wave voltage. The circuit to the voter magnet RW

809 790/41

closes from the terminal for the 50-period half-wave voltage (K 21) via the normally open contact rr ^m , the normally closed contacts rs ¹¹ , y ¹¹ , the normally closed contacts r ¹¹ , s ¹¹ , i ¹¹ , « ^Ir , z / ⁿ , the changeover contact zy ¹¹ and the selector magnet winding RW to minus. This excitation of the voter magnet RW causes the voter to start and sweep it over as long as none of the series contacts y ¹¹ 2 ₁ rs ¹¹ and rr ¹¹¹ or all of the parallel connected contacts r ¹¹ , s ¹¹ , i ¹¹ , u ¹¹ and v ^{11 are} open be, one after the other his contact arms the contacts of the individual voter levels.

This run of the 7? ^ -Selector lasts until its fr-arm reaches a contact lamella, which is fixed by a marking relay assigned to the selected goods. In the present description it has been assumed that goods with a price of 20 or 25 pfennigs are available for selection. The 20-pfennig price was determined by the marker relay FR (G 13) and the 25-pfennig price by the T ^ SV relay (ff 13). In the same way as the release relays FA and FB (GIHIJ 7) are connected with a plug connection St to the second lamella of the fe level of the ZW selector, another plug connection St is also connected to the second lamella of the & level of the RW - Selector a contact arrangement of the marring relays FR and FS connected. As can be seen from the drawing, are the two working contacts for ¹¹ 2 and fs ^I 2 (GIH 16) of the marker relay -FT? and FS connected in parallel to the positive pole of the voltage source and via the plug connection to the second contact arm of the ö-level of the i? J ^ selector, the & arm of the RW selector connects a ^ iV relay, which, the beginning of the Difference count indicates with the negative. Pole of the voltage source. Thus, provided that one of the working contacts for ^ll 2 or fs ^l 2 is closed by removing the goods, the ^ A ^r relay is energized when the JW selector reaches the second step. The ^ 4iV relay picks up and then continues to hold through a holding circuit, which continues from plus via the normally closed contact en ¹ to the normally open contact at ¹ . The normally open contact at ^u (718) of the yäiV relay prepares a holding circuit for the TiJV relay, which is connected to the c-arm of the RW selector. The TiA ^ relay is used to determine the end of the difference counting.

Since the c-level of the RW selector is connected in parallel with the c-level of the ZPF selector and the c-arm of the ZPF selector is connected to the positive terminal of the voltage source, the EN relay (JIK 18) if the c-arms of the two selectors ZW and RW are in the same position. When the EiV relay is energized, it holds itself via its self-holding contact en ¹¹ (719) until it has thrown off ^{the ^ -iA r} relay (GIH 18) again by opening its break contact en ^{1, t.} Only the dropping of the ^ ÜV relay has the consequence that the TsiV relay also drops out again by opening its normally open contact at ⁿ (718) after the selector arm c has moved further. It can thus be seen that the number of contact lamellas of the i? PF selector overflowing between the energization of the yiiV relay and the energization of the IiiV relay is an exact measure of the number of overpaid 10-pfennig amounts.

5. Repayment of the excess amount

The repayment of the remaining amount is controlled by the α-level of the J? FF voter. As soon as the ON relay is energized when a voter position corresponds to the price of the selected goods, its working contact closes at ¹¹¹ (F 18), which applies voltage to the α arm of the R ^ selector. The voltage supply of the α-arm of the RW selector comes from plus (F 12) via the normally closed contacts au ¹¹ , y ¹¹ 1, en ¹¹¹ and the normally open contact at ¹¹¹ . The α-arm of the RW selector, which is thus at positive voltage, excites the relay chain R, S, T ₁ U ₁ V ₁ in the same way as the relay chain A to F of the Ζϊ-F selector in a multiple circuit when its contact lamellas overflow the contact lamellas is connected. The five relays R to V connected to the contact lamellas of the α-level have their other terminal at minus, so that they are excited one after the other and then via their self-holding contacts r ^l l, S ¹ I ₁ t ¹ !, M ¹ I and W ¹ hold I. Depending on the point in time at which the aw ^m contact was closed, the excitation of the relay chain R to V begins at any point.

If all five relays have been energized during one run of the ÄZ ^ selector, i.e. if it was initially determined that at least 50 pfennigs too much was paid, the run of the RW selector is interrupted by all of the normally closed contacts r ¹¹ , s ^u , tft, u ¹¹ and v ¹¹ (7-7 / 720) of the relay chain have opened. The RW voter comes to a standstill. At the same time, the closing of all working contacts T ¹¹¹ I ₁ S ¹¹¹ I ₁ t ^m l, u ^m l and v ^m l (K / L20 / 21) results in the F-relay responding when five relays in the relay chain are energized. When it is excited, the F-relay opens its normally closed contact y ¹¹ ! (F 12) so that all relays 7? until V become de-energized again and drop, which then disconnects the excitation circuit of the F-relay via the ^{normally open} contacts r lll l to w ^In l. To ensure that all relay 2? to V drop, the relay chain, the F-relay keeps over its self-holding contact ^3/1 I (M21) and the operating contacts lying in parallel rs ¹ 2, s ¹¹ 2 ₁ t ^l 2, u ^l 2 and v ¹ 2 continues until the last of the relays has also dropped out.

The IF relay is energized by the normally open contact yt-2 (O / P19) of the F relay, which then flips its changeover contact zy ¹¹ (H 20) and forwards the i? PF selector by one step.

If it is desired not to repay the remaining money in any larger coins than in 50-pfennig pieces, the money return relay for the 50-pfennig piece could now be activated immediately. However, in order to prevent or delay an exhaustion of the cash on hand in 50-pfennig pieces, the present circuit provides for first of all to determine whether the remaining money can not be returned in larger amounts. For this purpose, a relay chain (NIΌ 16) consisting of the relays AR and BR is used, which is similar to the relay chain AW ₁ BW (NIO 13) already described when the 5-pfennig pieces were thrown in. As a result of the response of the F-relay, which, as described above, occurs each time after all relays R to V of the relay chain have been energized, its normally open contact y ^{closes in} 2 (016). As a result, an excitation circuit is closed from plus via the switchover contact br ¹¹ !, the normally open contact y ^m 2 _{1 and} the switchover contact br ¹ via the AR relay to minus. The AR-Üelais then picks up and closes its normally open contact ar ¹ , so that after the F-relay has dropped out and the contact y ^III 2 opens again, the AR and 7ii? Relays are initially excited; the latter then places its Unischaltekontakte br ¹ and br ¹¹ ! around.

Since another hold circuit is provided for the F-relay, which runs from plus (019), the contacts & r ⁿⁱ , ar ¹¹ and y ¹ 1, the F-relay can only drop out after the AR-relay has picked up and then his switchover contact ar ¹¹ flips over. The F-relay then immediately opens its contact y ^l 2, so that the subsequently relocated & r ^m contact (N 19/20) can no longer establish the hold circuit.

After the F relay has dropped out, the normally open ^{contact y 1} ! (P 18) the Z ^ relay off again and thus switches its changeover contact zy ¹¹ (H 20) again. The at. If the normally closed contact 3) ^IX 2 (/ 19) drops out, the return selector RW continues to run at 50 steps per second, further relays in the relay chain R to V being energized again, as already described above.

If the relay chain R to V is once again fully energized, the F-relay responds again, and the selector RW with the normally closed contacts r ¹¹ to v ¹¹ (HIT 20) is brought to a halt again.

With the second actuation of the F relay and the second closing of the normally open contact y ^m 2 (016/17), the AR relay is released, and only the BR relay remains energized via a negative circuit, the resistor BRV ₁ the changeover contact Jr ¹¹ I, the make contact y ^m 2, the changeover contact br ¹ , the winding of the relay BR and the break contact au ^m to plus. For the duration of the energization of the BR and F relays, their working contacts ^ ¹¹¹ I and Jr ¹¹ 2 (C 17) are also closed, so that the money return relay RD is energized immediately. The money return relay RD closes its working contact rd ¹¹ (P 20), which then excites the money return magnet M 3 for the return of a 1 DM piece and the machine ejects 1 DM. To. If the relay F drops out, the BR relay drops out again, and the relay chain AR, BR is again in the initial position.

The passage of the selector RW continues to actuate the relay chain R to V ₁ until when a selector position corresponding to the deposited amount is reached via the c-level d, the selector ZfF and RW, the EN relay is energized and then with his. Normally closed contact en ¹¹¹ (EIS) removes the positive voltage from the α arm of the RW selector again. At the same time, when the £ A ^r relay is excited with the normally closed contact ev} (G 19), the ^ iV relay is disconnected again.

Even if the relay EN is energized, the RW selector is not interrupted. If the RW-Wähl & r has reached the 51st contact lamella of the tf level (LJM 17), the d-arm closes from plus via the closed rr ^{x contact.} and the 51st contact lamella an excitation circuit for the AS 'relay to minus. The ^ 6 'relay remains above its own once it has been excited. Self-holding contact as ¹¹¹ continue. The self-holding circuit for the y4> S relay runs from plus via the normally closed contact tr ¹¹ , the self-holding contact as ¹¹¹ and the relay winding AS to minus.

By energizing the relay AS , an auxiliary selector AW is actuated, which ultimately indirectly effects the ejection of the excessively paid money.

The contacts of the α-level of the auxiliary selector AW are connected to the money return relays RA ₁ RB and RC . The RA relay is used to return overpaid 5-pfennig pieces, the i? J3 relay of overpaid 10-pfennig pieces and the i? C relay of overpaid SO-pfennig pieces.

"A measure of the number of pieces to be returned .; 10-pfennig pieces is given by the number of relays in the relay chain R to V. Each of these relays R to V has a ^{normally open contact r m} 2 / ί ΙΠ 2, ί ^ΠΙ 2 , u ^m 2 and> ^Iir 2 on, that of the AW selector are connected on one side to the RB Reiais and secondly to the first, third, fifth, seventh, ninth contact lamination of the α-plane thus, when the auxiliary selector AW its contact. Level in the following nodh

ίο runs through the way to be explained, takes place via the positive voltage α-arm of the AW selector according to the number of energized, relays R to V none or one to four times excitation of the i? 5 relay, which then picks up each time and With its r & ⁿ contact (P 19), the Magnat M 5 is excited / so that a 10-pfennig piece is ejected from the lÖkPfennig remaining money store every time. It is not possible to eject five pans since all relays in the relay chain R to V are energized and the F relay responds and all relays drop out again. With an even full run of the relay chain, i.e. for return amounts between a full mark amount and a value exceeding this amount by no more than 4-5 pfennigs, as already explained above, a simultaneous actuation of the make contacts Jr takes place with every second full run of the relay chain ¹¹ 2 and y ^m l, so that 1 DM is ejected immediately, regardless of the position of the auxiliary selector AW. .

If, on the other hand, the relay chain R to V has run through an odd number of times, so that the remaining money must contain a 50-pfennig piece, the AR and 5i? Relays are activated. The I? I? Relay, which characterized the ejection of a 1-DM piece, no longer has any influence on the circuit, since the ejection of full mark pieces already took place before the A selector was started and the separated y ^m l- Contact (C 17) the .RD relay cannot be operated again. The AR relay, on the other hand, closes its normally open contact ar ^m , which is connected between the sixth contact lamella of the α level of the AW Wähkir and the i? C relay. In this case, when the AW selector is passed through the RC relay and its work contact rc ¹¹ (P 20), magnet M 4 is excited, which then ejects a 50-pfennig piece.

To eject an excess 5-pfennig amount, the money return relay RA is connected to the fourth contact lamella of the α-level of the A W selector via a contact switch with the contact bw ^m 1 and ff ^m . From the drawing it can be seen that the two contacts Jw ™ 1 and ff ^m (B 15) are switched in their rest position in such a way that the irL-4 relay cannot come to voltage. The bw ^1Ti ! - contact is only thrown when the BW- ~ B.ela.is is excited, which is only the case if an odd number of 5-pfennig pieces has been thrown in. The / f ^m contact, which belongs to the relay FF (Q 15) , is only switched if the selected goods were to be paid for with a 5-Pfennig-Batrag. As explained above, the choice of goods with a 5-pfennig price is accompanied by the response of the relay FS . When the relay FS is pulled in, its normally open contact /.J ¹¹¹ I (P 15) closes, so that the 'FF relay is energized. Thus the return relay RA is only actuated by this switch circuit when the

thrown amount and the price of the goods next

if necessary, differentiate larger types of coins, also by an amount of 5 pfennigs. The money return relay RA actuates the money return magnet JkTo ₁ via its normally open contact ra ⁿ (P 18), which causes a 5-pfennig stick to be thrown out.

The connection of the money return relays RA to RC to the contact lamellas of the α-level of the AW selector is arbitrary. The individual connections of the i? 2? Relay are connected to every second contact lamella of the α level of the ^ fF selector only to ensure a longer actuation time for the return of 10 pfennig pieces. The 5-pfennig and SO-pfennig money return relays RA and RC could be connected in the same way to other contact lamellas and also, if the auxiliary selector ^ IJT runs slowly enough, the connections of the i? I? Relay could be provided on consecutive contact lamellas .

Two relays IR (D 16) and TR (C20) connected in pulse circuit are used to pass through the auxiliary selector AW. In the initial position of the ^ IT selector, it is started up by pulling in the ^ - relay (M 17) and closing the normally open contact as ¹ (C 17) . Closing the contact as ¹ closes a circuit for the 2i? Relay to minus, from plus (D 18) via the break contact ir ¹¹ , the switching arm & of the AW selector and contact as ^1. The / i? Relay picks up and closes its working contact M ' ^II (i? 19). By closing the normally open contact ir ¹¹ , the auxiliary selector magnet AWM and the T7? Relay connected in parallel to it receive voltage, so that first the AW-Wähl & r takes a step and possibly a 10-pfennig piece ^{when the r Iir 2 contact is closed} ejects. When the TR relay is energized , its normally closed contact tr ¹¹ (D 18) opens, so that the / i? Relay drops out again and its normally open contact ir ¹¹ opens. This causes the auxiliary selector magnet AWM and the TR relay to drop out again. With the following switching movements, each time after the new. If the T7? Relay drops out, the / i? Relay is energized again, since all contacts of the & level of the auxiliary selector AW are connected in parallel to one another and connected to the / i? Relay. In the end, the auxiliary selector AW will run through its contact levels step by step until the α-arm, after reaching the eleventh contact lamella, excites the AU relitis.

6. Voter return

After the sales process has ended when the ^ i £ 7 relay is excited, ie the goods and the overpaid amount of money have been spent, all selector switching elements must return to their starting position. When the switching arm of its tfVE level has reached the 52nd contact, the RW selector that has passed through ^{excites the i? .S * relay, which with its break contact 11} (K 20) brings the i? FT selector to a halt. At the same time, its normally open contact rs ^m 2 (G4), which energizes the ZX relay, which, as described above, causes the ZfT selector to run rapidly, also closes. As a result, the ZW selector also reaches its end position and, when its switching arm d has reached the 52nd switch position, energizes the X relay via the normally open contact Ts ¹ Z , which the. Self-holding ¹ circuit of the RS relay, which runs via contacts rs ^l l and x ¹¹ 2 , disconnects again. T he normally closed contacts rs ^m 1 (P 2, L 4) ensure that the coin slot contacts are ineffective and the lighting of the display boards is switched off for the amount paid.

By energizing the relay AU on the eleventh contact lamella of the ^ fF selector, its break contacts au ¹ (P 13), au ^J1 (P 12) and au ¹¹¹ (P 16) are separated, so that the relay chains AW -BW, AR-BR and R to V enters and these fall off. Audi thereby becomes the self-holding circuit of the relay FF, that of the plus via the contacts

ίο au ¹¹¹ ■ and ff ¹ ran, interrupted, so that the relay FF also drops out. After the AW-Wahlev has come down over his eleventh contact blade and is back in the starting position, no further drive of the shift arm relays can be done ,, because the / i? In the starting position excite only the make contact as ¹ (C 17) leaves. The relay AS However, already at the first step d.es selector AW? Relay (C 20) and open by its resting contact tr by operating the Ti ¹¹ (L / M 16) again

ao has been separated and subsequently remains unexcited.

7. The power supply

The power supply of the machine consists of two transformers Tr 1 (A23) and Tr 2 (C 23), the primary windings of which are connected in parallel to an alternating current network via fuses Si. The secondary winding of the transformer Tr 1 feeds a rectifier Gr 1 in a Graatz circuit. The output of this Graetz circuit is smoothed with a choke Dr and two capacitors C 2, C 3 and is used to supply all DC voltage relays and magnets in the circuit. The positive pole is on. Ground and the negative pole leads via a main fuse HSi and a break contact si ¹¹ to the secondary fuses NSi, which are directly connected to the connection points shown by an arrow in the drawing. The normally closed ^{contact sP 1} is operated by a safety relay SL (F / G21) , which is connected on the one hand to the negative DC voltage terminal and on the other hand in a multiple circuit to the safety contacts SiK of the automatic fuses. Smaller any of these fuses SiK, closes the then splaying bewegliehe part of the fuse contact SiK a. Excitation circuit from plus to the 6X relay, which then disconnects its normally closed contact / ¹¹ and thus puts the machine out of operation.

The second transformer Tr 2 is connected with its secondary winding to the negative pole of the DC voltage source and leads with its other terminal via a half-wave rectifier GV 3 to the terminal for the 50periodic half-wave current, which contributes to the fast running of the selectors ZW, MW and RW .

A relay SK is provided as a further safety element in the power supply unit. This relay SK has two partial windings, one of which is excited to positive via the negative terminal, the fuse HSi and the break contact si ^11. The second winding of the same relay SK is connected with the opposite winding sense and has an excitation circuit that runs from plus via the A winding SK and the fuse KSi to minus. The connections of the two relay windings SK that are not applied to the positive terminals of the voltage source are led to indicator lamps L 5 and L 6, the other pole of which is at positive voltage via the relay work contacts sk ¹ and sk ^ln. As long as the two fuses HSi and KSi are intact and the idle

Claims (1)

contact si ^{11 is} closed, the relay SK cannot pick up and the two indicator lamps LS and L 6 are therefore not lit. If, on the other hand, the fuse HSi fails or the relay SL picks up, so that its normally closed contact si ¹¹ opens, an asymmetry arises in the circuit, through which the right winding of the relay SK alone remains excited so that it has its armature attracts and the two working contacts sk ¹ and sk ^m closes. Since the lamp L 5 is disconnected from the negative voltage source, only the lamp L 6 lights up and thus indicates that the main fuse HSi or one of the re-soldering fuses NSi (closed contact SiK) has blown. The normally open contact sk ¹¹ de-energizes the blocking magnet SM, so that the coin slot is also closed. If, on the other hand, the fuse KSi fails , there is also a circuit asymmetry through which the left relay winding alone remains energized and in turn locks the coin slot via the normally open contact sk ^11. This process is indicated by the only lighting up of the signal lamp L5. Patent claims: " 1. Electric control for vending machines, in which the insertion of coins of different types in any order, preferably through only. a slot, takes place, using dialers and relays known from telephony technology, the amount thrown in is constantly added up and the release of the desired goods and, if necessary, a return of the overpaid amount only occurs when the amount thrown in has reached or exceeded the price of the goods concerned , by gdcennzeidb.net that a single summation selector (ZW) is provided for all coin types, the sum of the inserted amount in a fixed basic coin type, which can also be higher than the smallest coin type permitted for use, and that a return selector (RW ) is available, which starts the goods delivery process after initiation and switches on a differential counter that controls the remaining money dispenser between the switch positions marked on the one hand by the amount paid in and on the other hand by the price of the selected goods. 2. Control according to claim 1, characterized in that the summation selector (ZW) for all thrown in. Coins a relay chain (A to F) is assigned to the. when inserting a coin with an amount that has almost been placed, the summation selector advances once and for coins with a multiple amount of the specified basic coin type the summation selector by the steps corresponding to the ratio between the inserted and the fixed basic coin type and depending on the multiple amount of the inserted coin specified basic coin soirte expires once or several times. 3. Control according to claim 1 and 2, characterized in that up to six different types of coins are 65. act on a single summation selector (ZW) and the steps of the summation selector are controlled via, for example, a six-part relay chain, which runs once when a coin type TOm is inserted five times the basic coin type and several times for larger coin types. 4. Control according to claim 1 to 3, characterized in that a tracking selector (MW) is provided which is switched on each time a coin is inserted that is larger than the basic coin type and determines how many times the relay chain (A to F) is to be run through, using the tracking selector (MW) for each. Sequence of the relay (A to F) is switched one step further until it reaches a certain contact lamella, which is identified by the insertion of the corresponding coin, and in this position switches off the summation selector (ZW) and then returns to its starting position. 5. Control according to claim 1 to 4, characterized in that a relay chain (AW, BW) is provided for registering coins that are smaller than the basic coin sorta and accordingly do not correspond to a whole step of the summation selector (ZiF), the first after the smaller coins have been inserted several times when an amount has been reached which corresponds to the unit step of the summation selector (ZW) , the summation selector (ZW) advances one step. 6. Control according to claim 1 to 5, characterized in that the coin contacts to be actuated by the inserted coins (T to VI with relay H ) excite a blocking magnet (Sp) which locks the coin slot until the summation process on the summation selector (ZW ) is finished. 7. Control according to claim! to 6, characterized in that _. the summation selector (ZW) when registering coins that exceed the amount of the basic coin type and / or the tracking selector (MW) is driven with a pulse current, in particular with a 50-period half-wave current, when moving into the starting position. 8. Control according to claim 1 to 7, characterized in that the summation selector (ZW) are assigned contact levels (d, e) which visually display the amount thrown in on a display board in levels corresponding to the basic coin type. 9. Control according to claim 1, characterized in that da.ß to display the partial amounts that . are lower than the basic coin type, each display board connected to the contact level (e) of the summation selector (ZW) further display boards corresponding to the partial amounts are connected in parallel according to the subdivision, which are switched accordingly by the relay chain (AW, BW) of the smallest coins. 10. Control according to claim 1 to 9, characterized in that at a further contact level (b) of the summation selector (ZW) the goods price setting release relays (FA, FB) of the goods delivery can be connected, which when overflowing the connected contact by the associated Contact poorly excited and then hold themselves (fa ¹ , fb ¹ ). _; -, 11. · Control according to claim 10, characterized in that "" indicates that a contact (rr ¹ ) is arranged in the holding circuit of all release relays (FA, FB) , which is disconnected during the one-time delivery of goods and all release relays (FA, FB ) returns to its locked position. ■ ^l ~~ 809 790/41 12. Control after. Claims 1 to 11, characterized in that the price of the selected goods is marked on the return selector (RW) via a contact level (RWb) from which a contact (fr ^ ¹ 2, fs ¹ 2 ) when the selector arm is in the appropriate position, the circuit to a relay (AN) closes, which switches on the differential counter. 13. Control nadh claim 1 to 12, characterized in that the marking of the deposited amount via two parallel contact levels (ZWc, RWc) of the summation selector (ZW) and the money return selector (i? PF) takes place via which, if the position of the Contact arms of the summation and return selector (ZW, RW) a circuit is closed to a relay (EN) , which switches off the differential counter. 14. Control according to claim 1 to 13, characterized in that the number of release relays (FA, FB, FR, FS) corresponds to the number of different goods prices provided and the release relays (FA, FB, FR, FS) or the return selector marking contact arrangements (fr ¹¹ 2, fs ¹ 2) with interchangeable plug connections (St) known per se are connected to the corresponding contact levels (b) of the summation or return selector (ZW, RW) . 15. Control according to claim 1 to 14, characterized in that the money return selector (RW) is operated with pulse current, in particular with 50 ^u period half-wave current. 16. Control according to claim 1 to 15, characterized in that the differential counter consists of a relay chain (R to V) from which a further relay is actuated for each overrun step of the return selector (RW) in the difference range. 17. Control according to claim 16, characterized in that the number of relays in the relay chain (R to V) corresponds to the reciprocal of the ratio between the basic type of coin and the next larger type of coin to be used as remaining money. 18. Control according to claim 1 to 17, characterized in that an auxiliary selector (AW) is provided to initiate the ejection of the remaining money, which is brought through after the end of the passage of the return selector (RW) and the contacts of a contact plane (α) of number sets according to voltage, the selector contacts on the relay chain (R-V) of the Differenzzählwerkes controlled preparation contacts (V ⁿⁱ 2,. ^ 2, f ^Iir 2, u ^m 2, v ^m 2) Münzrückgabetrelais (RA ₁ RB ₃ RC) are connected in multiple connection according to the maximum number of each coin type that can be returned. 19. Control according to claim 1 to 18, characterized in that after a full run of the relay chain (R to V) of the differential counter of the preparatory contact (ar ^m ) between the The coin return relay (RC) of the next larger coin type and the auxiliary selector (AW) are closed and the reloading chain (R to V) drops out again. 20. Control according to claim 1 to 19, characterized in that the passage of the return selector (RJV) bed every full passage of the relay chain (R to V) of the differential counter interrupted and only after all relays (R to V) of the relay chain have dropped again is left on. 21. · Control according to claim 1 to 20, characterized in that after multiple diirchlauf of the relay chain (R to V) when an amount is reached that corresponds to a next larger type of coin, the previously closed \ ^r preparation contacts (ar ^m ) of the coin return relay for the The next smaller coin type is opened again and a preparation contact (br ⁿ 2), which is also connected to the auxiliary selector (AW) , is closed for the coin return relay (RD) assigned to the larger coin type. 22. Control according to claim 1 to 21, characterized in that the coin return relay (RA) for types of coins that are smaller than the basic type of coin is connected to the auxiliary selector (AW) via a switch contact arrangement (bw ^m l, ff ^m ) which is controlled according to the number of small coins thrown in and according to the number of small coins required for the desired goods. 23. Control nadh claim 1 to 22, characterized in that the auxiliary selector (AW) is actuated gradually with direct current through two relays (IR, TR) connected in pulse switching device. 24. Control according to claim 1 to 23, characterized in that the inserted coins after passing their respective coin contact, sorted according to type in coin storage tubes are collected, of which they are when the goods are placed in the cash register and when the Return button into the money ejector. 25. Control according to claim 1 to 24, characterized in that feeds to remaining money stores are arranged in a slide between the coin storage tubes and the cash register, at the lower end of which the return magnets controlled by the coin return relays (RA to RD) are arranged. 26. Control according to claim 1 to 25, characterized in that contacts (raa, rba ,, rca, rda) are arranged in the remaining money stores which visibly display this state to the buyer when the remaining money is about to run out of the respective variety. Documents considered:
German patent specifications No. 362 167, 574 490,
911341; Austrian Patent No. 125 856;
British Patent Nos. 353 890, 503 257,
285, "518 679, 695 867. 1 sheet of drawings © 80? 790/41 4.59.