US1693104A - Method and apparatus for selecting metal checks - Google Patents

Method and apparatus for selecting metal checks Download PDF

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Publication number
US1693104A
US1693104A US250036A US25003628A US1693104A US 1693104 A US1693104 A US 1693104A US 250036 A US250036 A US 250036A US 25003628 A US25003628 A US 25003628A US 1693104 A US1693104 A US 1693104A
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US
United States
Prior art keywords
check
checks
impact
passage
chute
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.)
Expired - Lifetime
Application number
US250036A
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English (en)
Inventor
Hugh E Wurzbach
Leslie H Wadsworth
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.)
SELECTOR Corp
Original Assignee
SELECTOR CORP
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 SELECTOR CORP filed Critical SELECTOR CORP
Priority to US250036A priority Critical patent/US1693104A/en
Application granted granted Critical
Publication of US1693104A publication Critical patent/US1693104A/en
Priority to DES89234D priority patent/DE551809C/de
Priority to GB1270/29A priority patent/GB304769A/en
Priority to FR668442D priority patent/FR668442A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 main object of the invent-ion is to provide a novel method and apparatus for the above purpose.
  • a particular object of the invention is to provide for double selecting action-dependent upon the combined properties of electrical conductivity and resiliency, whereby checks having a certain electrical conduct-ivlty and a certain resiliency will be delivered separately from the checks difi'ering therefrom either in electrical conductivity or resiliency.
  • the invention consists both in the method and-apparatus, the method consisting essentially in causing the check to be tested to pass into and through a zone of concentrated magncticflux, whereby the velocity of the check is modified in accordance with its electrical properties as hereinafter described, and subsequently causing checks delivered in a certain path as a result p t the intensity of the velocity-modifying action of said magnetic flux, to strike against impact means and rebound therefrom, and selectively delivering the checks so striking said impact means and undergoing a certain amount and direction of rebound separately from checks failing to properly strike the impact means or failing to rebound in the proper mannerafterstriking said impact means.
  • the check is delivered through space, after passing through the zone of magnetic fiux, so as to cause it to travel in a free trajectory dependent upon the velocity at which the check leaves said zone.
  • a certain kind of coin does not always travel exactly the same trajectory, due to variations in surface condition, and, indeed, the same coin will experience slight changes in trajectory, if repeatedly inserted, probably due to slight variations in vibration as it passes down the chute.
  • This variation in trajectories is taken care of by making the impact surface of the impact member just wide'enough to span the limits of variation.
  • the Width may be cut down to even less to secure a greater selectivity," since the only result is to return an Serial No. 250,036..
  • the apparatus of our invention comprises essentially, means defining a passage for checks, means for creating a concentrated magnetic field across or through a certain portion of said passage in such mannerthat the lines of force are cut by a check moving in said passage, suitable impact-means disposed in the path of checks following a certain trajectory after leaving said passage, an means for selectively delivering the checks after rebound from said impact means, in accordance with the trajectory thereof after such rebound.
  • Fig. 1 is a vertical section of one form of such apparatus.
  • Fig. 2 is a section on line 22 in Fig. 1.
  • Fig. 3 is a section on line 3-3 in Fig. 2.
  • Fig.4 is a section on line 4-4 in Fig. 1.
  • Fig. 5 is a vertical section of another modification of the apparatus.
  • a chute 1 is provided having a downwardly inclined check conducting passage 2 and an opening 3 for insertion of a metal ch eck in the upper end of said passage.
  • Means are provided for creating a strong.
  • poles of said magnets are secured in position in contact with common pole pieces 6 and 7, the two north poles being, for example, secured in contact with .pole piece 6 and the two south poles in contact with the pole piece 7.
  • Said pole pieces are preferably provided with means for concentrating the magneticfiux therebetween across a limited portion or zoneof chute 2, such means comprising for example L-shaped members 8 and 9 formed on or secured to the respective, Pole pieces, the inner ends of said members projecting through the side walls of chute 1 as shown, so as to leave a gap therebetween just sufi'iclent to permit passage of the cheek and concentrate said flux through the smallest possible portion of the check and thus produce the maximum efl'ectthereon.
  • Chute 1 opens at itslower end and beyond the opposing members '8 and'9 into an enlarged-chamber or housing 12 providing a passage 13 between the side plates 14 thereof, said passage being only slightly greater in width than the thickness of the checks designed to pass therethrough but having a sufiicient extension in the plane of said check to permit any check to fall freely therethrough in different paths under the influence of gravity, depending upon the weight of thescheck and thevelocity with which it leaves the passage 2.
  • anvil or impact member 16 which extends from one side plate 14 to the other, but whose dimension in a directionsubstantially perpendicular to the trajectory of the check is considerably less, than that of the chamber 12 soas to provide a space 17 infront of said impact member and a space 18 beyond the same of suflicient size to permit passage of checks therethrough.
  • the impact member is placed as sllown, below and somewhat beyond the lower end of chute 1, so that a check leaving said chute at exactl a predetermined velocity will strike said' impact membersquarely upon its upper or impact face 19 and rebound in-the desired manner provided such check possesses the desired property of resiliency.
  • an adjustable deflecting member 21 which may be set in'any desired position between the side walls 14, said deflecting member comprising, for example, a short metal sleeve or section of tubing held in position by means of screw 22 extending through slots 28 in said sidewalls and se- .1 by 24;, By moving said deflecting men1- ber up or down in the slots 23 the same may be set in such position that a check striking the upper face of impact member 16 squarely and "possessing the proper'resil-iency will rebound over said deflecting member,wh1le anycheck of less resiliency will strike said deflecting member and be thrown back and fall through 4 one of the passages "17 or 18.
  • a downwardly extending check receiving chute 26 into which any check rebounding over said deflecting member is permittedto fall.
  • the end of chamber 12 isclosed as indlcated at 27-and is preferably rounded as shown so as to catch all checks passing over the deflecting member and guide the same -into the chute 26.
  • Chamber 12 may communicate at .its lower end with a chute 28 into which any cheeks passing through the spaces 17 or 18 are delivered.
  • an additional deflecting member may be provided as indicated in dotted lines at 21 for intercepting checks having greater resiliency than that desired, said deflecting member being, for example, similar to member 21 and being mounted in the upper portion of the same slots 23.
  • a coin or check inserted through opening 3 into the upper end of passage 2 will roll downwardly in said passage and through the zone of concentrated magnetic flux between the opposing pole members 8 and 9.
  • the motion of such check through the magnetic field will cause induced electric currents commonly known as eddy currents to be setup therein by electromagnetic induction and will at the same time cause a retarding force to be exerted upon the check,'the strength of such force, for a given strength of magnetic field, depending primarily upon the electrical conductivity of the check.
  • the strength of the retarding .force thus exerted upon the check will influence the velocity thereof and thus deter- 'mine the velocity at whichthercheck is dis ductivity of the check upon which the retardation or modification of the motion of the check depends, depends not only upon the actual conductivity of the substance of which the check is composed,but also upon the shape or configuration t reof. For example, if the check be provided with perforations, its apparent or effective 'conductivitywill thus be reduced.
  • electrical conductivity as used herein is understood to mean the effective conductivity of the checks, that is, the
  • the method and apparatus of this invention are intended particularly for operation upon checks com posed of non-magnetic or weakly magnetic substances, that is to say, upon substances which are not strongly paramagnetic, and are therefore not attracted upon being placed within a magnetic field, the action upon which the invention is based being dependent entirely upon the eddy currentsand the resultant retarding force produced upon motion of the check through the magnetic field.
  • the invention is, for example, adapted for handling checks composed of silver, gold, copper, lead, tin', zinc, antimony, or alloys thereof but it is not intended for the handling of checks made of iron, nickel or the like, which would be so strongly attracted as to be stopped by one or the other of the pole pieces.
  • Magnets 4 and 5 are of suflicient strength, and impact member 16 is so placed with respect to the lower end of passage 2 that a" check having a certain desired electrical conductivity and hence undergoing a certain retardation in its passage through the magnetic flux willleave such passageat justsuf: ficient velocity to cause it to fallin substantially the path, or trajectory indicated by the arrows at A in Fig. 1. Such a check will,
  • the apparatus will also reject any check which is not round, as such check will be caused to slide down the chute 1 instead of tional resistance its velocity at the time of leaving said chute will not be great enough tocause it to strike impact member 16 or at least to strike it in such manner as to rebound clear of thedeflecting means 21 and 21.
  • FIG. 5 A modification of the apparatus is shown in Fig. 5, in which the chute 1 provided with check conducting passage 2, and the means for creating magnetic flux across said passage may be substantially the same as before,'but' in which the impact member 16' is placed in a position more nearly in line with the directionof said passage instead ofbelow the same tively high velocity will be projected as indicated by the arrows E and strike the lateral impact face 19', so as to be deflected in some such path as that indicated as F and fall into the chute 31.
  • the plane of the impact face is in this case such as to cause the check to rebound backward insteadof for -so that a check leaving the passage 2 at relaface but rebounding therefrom in a path such as indicated at H, due to insuflicient'resiliency.
  • This formof apparatus is particularly adapted for the selection of checks of relatively low electrical conductivity, but. relatively high resiliency, as checks of this character will be relatively slightly aflfected'by passage through the magnetic field and will hence leavethe passage 2 at high velocity, and will also rebound a maximum distance from the impact member 16.
  • the principles upon which the selection is based are, however, the same as in the form of apparatus first described.
  • the method of selecting checks which comprises causing the check to pass through a zone of concentrated magnetic flux whereby v the velocity of said check is diminished in accordance with the induced currents set up therein, permitting'the check to move in a free trajectory after leaving said zone of mag netic fiux, causing any'check moving in'a certain trajectory to strike against impact means and to rebound therefrom in accordance with the resiliency thereof, and delivering any check striking said impact means and rebounding therefrom in a certain manner separatelyfrom all checks failing to strike said impact means and all checks striking said impact means and failing to rebound therefrom in said certain manner.
  • An apparatus for selecting checks comprising means creating a zone of magnetic -fiux means for delivering checks to said zone of magnetic flux so as tocausesaid checks to cut thelines of force of said flux, means for conducting checks from said zone in such a manner that they are 'free to move under the combined influence of their velocities and gravity, impact means positioned so as to be struck by c ecks travelling a certain trajectory, means adapted to receive checks re bounding .from said impact means in a certain path and means adapted to prevent entrance of checks rebounding in any other path into said check receiving means.
  • the method of selecting checks which comprises causing the checks to pass through a zone of concentrated magnetic flux so as to cause the velocity thereof to be diminished in accordance with the induced currents 4.
  • the method of selecting checks which comprises first subjecting thecheck to a se- 'lect'iveaction dependent upon the retardation thereof when passed through aizone of magnetic flux, subsequ entl discharging the check in a direction other t an vertical, so that it will move in a free trajectory determined by its resulting velocity, and subjecting it while so movingjto a selective action dependent,
  • the method of selecting checks which comprises first passing the check through a zone of magnetic flux'to modify the velocity thereof in accordance with the electric induction therein, subsequently discharging the.
  • the method of selecting checks which comprises passing the check through a zone of concentrated magnetic-flux so as to modify the velocity thereof in accordance with the, induced currents set 11 therein, causing the check upon leaving sai zone to move in a free trajectory determmed' by its modified velocity, causing any check moving in a certain trajectory to strike upon impact means and to rebound therefrom, and selectively separating checks striking said impact means and rebounding therefrom in a certain path from checks failing to strike said impact meansand from checks striking said impact means but failing to rebound in said certain path.
  • An apparatus for selecting checks comprising impact means, means creating a zone of magnetic flux, means defining a check conducting passage extending through said-zone of magnetic flux and. ada ted to discharge a check in a direction ot erwthan vertical,
  • An apparatus for selecting checks comprising a chute provided with a downwardly inclined. check conducting passage, magnet means creating a zone of magnetic flux across a' portion of said chute, housing means communicating with the lower end of said chute and adapted to permit a check upon leaving said chute to move in a free trajectory under the combined effect of itsown momentum and-the force of gravity, an impact member mounted within said housing means and having an impact face so positioned that a check 4 a following a certain trajectory through said housing means will strike said impact face and rebound therefrom in a manner depend ent upon the position, direction and velocity of impact and upon the resilience of the check,
  • 'deflectlng means positioned within said housing means between said impact member and said check receiving passage and adapted to permit a check rebounding in a certain manner from said impact member to pass said deflecting means and enter said check receiving passage but to deflect checks rebounding in any other manner and prevent the same from entering said check receiving passage, and means separate from said check receiving passage for receiving and conducting away checks failing to strike said impact member and checks deflected by said deflecting means.
  • a check selecting apparatus comprising means creating a zone, of magnetic flux, a check conducting chute extending through said zone of magnetic fltix, impact means arranged beyond the end of said chute, said magnetic flux being adapted to retard checks passing therethrough diiferentially in accordance with their composition, said chute being adapted to discharge checks in a direction other than vertical, whereby they will travel along trajectories: determined by their m0- mentum and gravity, said impact means having an edge located on the line of division between the trajectories of different kinds of checks, means "defining a check receiving passage, and deflecting means adapted to exclude checks rebounding from'said impact means from said check receiving, passage, except those traversing a certain path.
  • a check selecting apparatus comprising means creating a zone of magnetic flux va check conducting chute extending through said zone of magnetic flux, impact means arranged beyond the end of said chute,'said magnetic flux being adapted to retard checks passing therethrough differentially in accordance with their composition, said chute being adapted to discharge checks in a direction other than Vertical, whereby they will travel along trajectories determined by their momentum and gravity, saidimpact means having an impact face defined by two edges located substantially at the outer limits within which the trajectories of a certain kind of checks lie, a check receiving passage, and deflecting means adapted to exclude checks rebounding from said gimpact means from said check receiving passage, except those traversing a certain path.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Sorting Of Articles (AREA)
  • Testing Of Coins (AREA)
US250036A 1928-01-27 1928-01-27 Method and apparatus for selecting metal checks Expired - Lifetime US1693104A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US250036A US1693104A (en) 1928-01-27 1928-01-27 Method and apparatus for selecting metal checks
DES89234D DE551809C (de) 1928-01-27 1929-01-10 Muenzenpruefer
GB1270/29A GB304769A (en) 1928-01-27 1929-01-14 Method of and apparatus for selecting metal checks
FR668442D FR668442A (fr) 1928-01-27 1929-01-25 Procédé et appareil pour sélectionner des jetons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US250036A US1693104A (en) 1928-01-27 1928-01-27 Method and apparatus for selecting metal checks

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US1693104A true US1693104A (en) 1928-11-27

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US250036A Expired - Lifetime US1693104A (en) 1928-01-27 1928-01-27 Method and apparatus for selecting metal checks

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US (1) US1693104A (fr)
DE (1) DE551809C (fr)
FR (1) FR668442A (fr)
GB (1) GB304769A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538820A (en) * 1944-03-02 1951-01-23 Edward G Weiler Coin selector for coin-controlled machines
US2744603A (en) * 1951-09-10 1956-05-08 Nat Rejectors Gmbh Coin separators

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015058C2 (de) * 1969-04-01 1983-12-08 Mars Inc., Washington, D.C. Vorrichtung zur Prüfung von Münzen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538820A (en) * 1944-03-02 1951-01-23 Edward G Weiler Coin selector for coin-controlled machines
US2744603A (en) * 1951-09-10 1956-05-08 Nat Rejectors Gmbh Coin separators

Also Published As

Publication number Publication date
FR668442A (fr) 1929-10-31
GB304769A (en) 1930-04-14
DE551809C (de) 1932-06-08

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