EP0100646A2 - Vorrichtung zur Prüfung der Anwesenheit eines Gegenstandes aus einem bestimmten Metall oder einer bestimmten Legierung - Google Patents

Vorrichtung zur Prüfung der Anwesenheit eines Gegenstandes aus einem bestimmten Metall oder einer bestimmten Legierung Download PDF

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Publication number
EP0100646A2
EP0100646A2 EP83304332A EP83304332A EP0100646A2 EP 0100646 A2 EP0100646 A2 EP 0100646A2 EP 83304332 A EP83304332 A EP 83304332A EP 83304332 A EP83304332 A EP 83304332A EP 0100646 A2 EP0100646 A2 EP 0100646A2
Authority
EP
European Patent Office
Prior art keywords
coin
electrode
control means
conductor
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83304332A
Other languages
English (en)
French (fr)
Other versions
EP0100646A3 (de
Inventor
Arthur Shaw
John Diver
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0100646A2 publication Critical patent/EP0100646A2/de
Publication of EP0100646A3 publication Critical patent/EP0100646A3/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • G07D5/08—Testing the magnetic or electric properties

Definitions

  • the invention relates to control means responsive to the presence of an article of a particular metal or alloy.
  • the control means provided by the invention is particularly, but not exclusively, for permitting the operation of a coin-actuated or coin-freed machine only when an appropriate valid coin has been inserted into a coin-receiving slot of the machine and conversely to prevent the operation of the machine as a result of the insertion of an incorrect or counterfeit coin.
  • Coin-actuated or coin-freed machines such as gaming or amusement machines, ticket machines, dispensing machines, change-giving machines or coin-controlled telephones are often designed to receive coins of comparatively high denominations.
  • An object of the invention is to provide control means which will detect such a counterfeit coin and so prevent the operation of the machine.
  • control means is operable in response to the approach of an article made of a predetermined metal or alloy into engagement with or into close proximity to an electrode made of a different metal or alloy, by the - generation of an e.m.f. between the article and the electrode, the control means also including relay means operable by the e.m.f. to effect the actuation of a control member.
  • the article may be engaged between the electrode and a conductor spaced from the electrode, the control means also including means for heating the electrode whereby the part of the article engaging the electrode will become hotter than a part of the article remote from the electrode, said heated and unheated parts of the article thereby forming with the electrode and the conductor respectively "hot” and “cold” junctions, whereby an e.m.f. will be generated therebetween by a thermo-couple or Seebeck effects
  • the electrode is heated by an induction winding positioned around the electrode.
  • the electrode may be heated by electrical resistance or by a gas flame or by other means.
  • the electrode may be cooled by an appropriate refrigerating coil, the part of the article which engages the electrode and the electrode itself thereby forming a "cold" junction and said remote part of the article and said conductor thereby forming a "hot” junction, an e.m.f. being produced, as before, by an electrocouple or Seebeck effect.
  • control means is to be provided in a coin-actuated or coin-freed machine to permit the machine to be operated only when an appropriate valid coin has been inserted into a coin-receiving slot of the machine
  • the coin constitutes the aforesaid article and completes, when it has been inserted into the coin-receiving slot, an electrical circuit between the electrode and the conductor, an e.m.f. of an effective magnitude being generated only where the coin is genuine, the e.m.f. therefore effecting operation of the relay means to permit actuation of the machine.
  • the relay means when operated, may effect release of the coin from engagement with the electrode and permit the coin to fall into a receptacle for coins as well as freeing the machine for operation.
  • the control means may also include means for releasing the coin from the electrode but without freeing the machine for operation when the required e.m.f. has not been generated, where a counterfeit coin has been inserted into the coin-receiving slot of the machine.
  • the release means may be operable after the elapse of a predetermined time interval after insertion of the coin into the coin-receiving slot.
  • the release means may be effective to release the coin into the aforesaid coin receptacle or to reject the coin from the machine.
  • the release means may be operative to deflect the coin into another coin receptacle, whereby only genuine coins are collected in the first-mentioned receptacle and coins deflected by the release mechanism are collected in the second- mentioned receptacle.
  • the release means may also be effective to operate a warning device to indicate that a coin which is not of the correct denomination or which may be counterfeit has been inserted into the coin-receiving slot.
  • the electrode and the conductor may be positioned to be engaged either by the periphery of the coin or by respective faces at a central region of the coin.
  • the electrode and the conductor are positioned to be engaged by the periphery of the coin, there may be a second electrode and a second conductor together with the coin forming a second electrical circuit operable in a similar manner to said first-mentioned electrode and conductor to produce a second e.m.f. of effective magnitude only where the coin is genuine, operation of said relay means only being effected where each e.m.f. is of a required effective magnitude, said second electrode and said second conductor being positioned to be engaged by respective faces at a central region of the coin.
  • the invention also includes a coin-actuated or coin-freed machine including a control means as set out in the three immediately preceding paragraphs.
  • control means may have other applications.
  • the control means may be used to actuate a warning device or to stop a drill or other machine tool where a drill or other tool - has cut through a non-metallic covering or layer or a covering or layer of a first metal or alloy and has engaged a lower or inner layer or part of a predetermined metal or alloy, the drill or tool being the aforesaid article and said lower or inner layer or part being the aforesaid electrode.
  • a coin 2 is illustrated in the position 3 in which it rests upright on a pair of spaced supports 4, 5.
  • the support 4 is fixed and in this example is formed by a piece of stiff bare copper wire.
  • the support 5 is also electrically-conductive and is movable from the supporting position shown in full-lines to a release position indicated in broken lines.
  • the support 4 is the aforesaid electrode and the support 5 is the aforesaid conductor.
  • the electrode and the conductor are connected electrically to the input terminals 6 of a D.C. amplifier 7.
  • the output terminals 8 of the amplifier 7 are connected to the solenoid of a relay 9.
  • This has an armature which is connected mechanically at 10 to the conductor 5 to withdraw the latter from its supporting position shown in full-lines or to allow it to return under a return spring indicated at 11.
  • the electrode 4 is heated continuously,or intermittently by means of - a thermostatic control, during the period the machine is operable by an inductive or resistive coil 12 from an electrical supply 13.
  • the coil 12 may be a secondary winding of a transformer.
  • the electrode 4 could be heated by a gas flame or in some other way.
  • thermocouple or Seebeck effect A typical temperature to which the electrcde 4 is heated is 60°C.
  • the e.m.f. generated is applied to the input 6 of a D.C. amplifier 7.
  • the input current at 6 may be reduced by a variable resistor set for a particular value of coin or by a fixed resistor 15 of a value which will give an input current of a required value corresponding to the e.m.f. produced by a genuine coin of a particular value.
  • the output 8 of the D.C. amplifier 7 is applied to the E:lenoid of a relay 9 which will, when energised, withdraw the conductor 5 from beneath the coin 14 in position 3, thereby allowing the coin to fall into a receptacle 16 within the machine.
  • the relay 9 also closes a switch (not shown) for rendering the machine operational for a game to be played or for vending, or for whatever is the function of the machine.
  • a time-controlled device may be actuated to withdraw the conductor 5 after a predetermined time (e.g., 2 seconds) after insertion of the coin and thereby to release the coin but without energising the relay 9 to render the machine operational. The incorrect or counterfeit coin would then fall into the receptacle 16 and thus be confiscated from the user.
  • the time-controlled device which withdraws the conductor 5 may cause the counterfeit coin to be deflected into a special receptacle within the machine, where counterfeit coins are collected or to discharge the counterfeit coin to a reject slot.
  • the time-controlled device may actuate a warning device (not shown) to give visual and/or audible warning that a suspect coin has been inserted into the machine.
  • the warning device may be mounted in the machine or be at a remote position.
  • the electrode 4 and the conductor 5 may alternatively te engaged by the faces of the coin at a central region of the coin or two sets of electrodes 4 and conductor 5 may be employed, one set to be engaged by the periphery of the coin and the other set to be engaged by the faces of the coin at a central region thereof. In the latter arrangement a required effective e.m.f. from each of the sets of electrode 4 and conductor 5 would be required to effect operation of the relay 9. The positioning of the electrode 4 and the conductor 5 to engage the faces of the coin at a central region thereof would check the metal or alloy at the central region of the coin and also that it is of the correct thickness.
  • the positioning of the electrode 4 and the conductor 5 so that they will be contacted by the edge of the coin is preferred because it is more likely that the periphery of a counterfeit coin will be of the wrong material, e.g., where a smaller lower denomination coin is converted to the shape and size of a larger higher denomination coin by attaching a resin-based compound to its edges or periphery.
  • thermocouple or Seebeck effect to generate an e.m.f. has been found to result in very sensitive adjustment between operation and non-operation with respect to any particular value of coin of a variable resistor or selection of an appropriate value of fixec reactor 15.
  • the circuit in each control means having a different value of resistor 15 or a different setting of a variable resistor in order to give on inserting a genuine coin of that denomination a particular e.m.f. corresponding to that denomination of coin.
  • the relay may be a conventional solenoid type or relay or it may be any equivalent relay means, such as an electronic device.
  • control means provided by this invention is more simple than conventional coin detecting and handling devices usually used in coin-actuated or coin-freed machines and is therefore cheaper to prodice and also cheaper to maintain as very little servicing or adjustment would be required.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Testing Of Coins (AREA)
EP83304332A 1982-08-03 1983-07-27 Vorrichtung zur Prüfung der Anwesenheit eines Gegenstandes aus einem bestimmten Metall oder einer bestimmten Legierung Withdrawn EP0100646A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8222343 1982-08-03
GB8222343 1982-08-03

Publications (2)

Publication Number Publication Date
EP0100646A2 true EP0100646A2 (de) 1984-02-15
EP0100646A3 EP0100646A3 (de) 1985-05-22

Family

ID=10532066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304332A Withdrawn EP0100646A3 (de) 1982-08-03 1983-07-27 Vorrichtung zur Prüfung der Anwesenheit eines Gegenstandes aus einem bestimmten Metall oder einer bestimmten Legierung

Country Status (5)

Country Link
EP (1) EP0100646A3 (de)
JP (1) JPS5994191A (de)
AU (1) AU1729783A (de)
ES (1) ES524703A0 (de)
GB (1) GB2124812B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2046127B1 (es) * 1992-06-12 1994-10-01 Azkoyen Ind Sa Selector de monedas.
DE102013205048A1 (de) * 2013-03-21 2014-09-25 Bundesdruckerei Gmbh Vorrichtung und Verfahren zur Echtheitsüberprüfung eines Wert- oder Sicherheitsdokuments

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315174A (en) * 1937-05-15 1943-03-30 Marshall Seeburg N Apparatus for separating genuine from spurious coins
US2288014A (en) * 1940-01-12 1942-06-30 Electric Slug Rejector And Mfg Device for the automatic detection of genuine coins
US2327945A (en) * 1940-04-15 1943-08-24 Marshall Seeburg N Apparatus for separating genuine from spurious coins
US2318520A (en) * 1941-03-22 1943-05-04 Patzer William Coin and check separator
US2335369A (en) * 1942-03-16 1943-11-30 Marshall Seeburg N Apparatus for separating genuine from spurious coins
DE2644018A1 (de) * 1976-09-30 1978-04-06 Johann Eiben Muenzen aus verschiedenen metallen magnetisch und thermoelektrisch pruefbar

Also Published As

Publication number Publication date
ES8405537A1 (es) 1984-06-01
GB8320199D0 (en) 1983-09-01
GB2124812B (en) 1985-11-13
ES524703A0 (es) 1984-06-01
JPS5994191A (ja) 1984-05-30
EP0100646A3 (de) 1985-05-22
AU1729783A (en) 1984-02-09
GB2124812A (en) 1984-02-22

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