Patent Application
20090047889
The present invention relates to a coin handling machine and methods for offsorting coins in such a machine.
Zweig et al., U.S. Pat. No. 5,992,602, assigned to the assignee herein, discloses a coin sorter having a circular sorting track with an outside reference edge. The coins are moved by a coin moving disk with fingers that press down on and push the coin along its path. An upstanding half shaft of semicircular cross section is disposed along the reference edge to allow coins to pass, and is rotated to urge a selected coin away from the rim to an offsort location inward of the reference edge. The offsorting is actuated by an induction coil located beneath the track in advance of the diverter mechanism, when the signals generated from that coin do not fall within a range of acceptable values.
In Brandle et al., U.S. Pat. No. 6,729,461, assigned to the assignee herein, an optical sensor is used to detect coins by denomination by measuring a size of each coin. Inductive sensors measure alloy characteristics. These measurements are used to detect invalid coins, which are then offsorted. The offsorting arrangement in Brandle contained a transition area for diverting the coin out of the coin track to an opening, which was similar to the arrangement in U.S. Pat. No. 5,992,602.
It is now desired to improve the optical sensor, both as to cost and performance. As a result, it is also necessary to modify the coin moving disk to reduce the width of the fingers. Therefore, it is also necessary in such a system to provide a new type of offsorting.
The invention relates to a method and an apparatus for offsorting coins in a coin handling machine.
In this method, coins are offsorted by pressing down on a plurality coins along their outer edges against an arcuate coin track and against and outside reference edge. A coin is then pushed inwardly from the reference edge and off a narrow rail portion of the coin track that separates an offsort opening from the outside reference edge. The offsort opening is in the arcuate coin track and is not as wide across as a diameter of a smallest size of coin to be offsorted. The pushing of the coin off of the narrow rail portion causes it to tip up as it begins to fall into the offsort opening.
When a coin is determined to be not a valid coin by a coin sensor assembly, a signal will operate a diverter mechanism along the reference edge to move the coin inwardly off the reference edge and off of the narrow rail portion of the coin track next to the offsort opening. For smaller coins this is enough for the coin to fall through the offsort opening. For larger coins, there must be further assistance to urge the coin into the offsort opening. This is provided by a deflector at the end of the offsort opening which will meet the coin as it moves arcuately along the coin track and deflect a trailing portion of the coin into the offsort opening. If the coin has not been tipped up by the action of the diverter, it will pass over the offsort opening and underneath the deflector. The offsort opening has an outside edge that converges toward an inside edge and toward a center of the sorting disk to provide a narrowing of the offsort opening to further control rotation of tipped coins.
The apparatus of the invention is a two disk coin handling machine having a feeding disk for feeding coins to a sorting disk, the coin handling machine further comprising: an arcuate outside reference edge disposed along the sorting disk for coins moving along an arcuate coin track, the sorting disk having at least one opening along the coin track for receiving valid coins; a drive member disposed above the sorting disk for positive control of the coins as the coins are moved in a single layer and a single file along the outside reference edge; a diverter member disposed along the reference edge, the diverter member being operable to project into the coin track in advance of the sorting openings to move a coin selected for offsorting away from the reference edge; and an offsort opening in the sorting disk, the offsort opening being located between the diverter member and the opening for receiving valid coins, and the offsort opening being spaced from the reference edge by a narrow rail portion and being positioned in the coin track to receive coins that are moved laterally by the diverter member.
The invention distinguishes from the prior art in the tipping of a coin to be offsorted. The offsorting occurs while the coin is still in the coin track as opposed to the coin being removed from the coin track as is the case in the prior art constructions discussed above.
Other objects and advantages of the invention, besides those described above, will be apparent to those of ordinary skill in the art from the description of the preferred embodiments which follows. In the description, reference is made to the accompanying drawings, which form a part hereof, and which illustrate examples of the invention.
Referring to
A sorting disk assembly has a lower sorter plate 12 with coin sensor station 40, an offsort opening 31 and a plurality of sorting openings 15, 16, 17, 18, 19 and 20. There may be as many as ten sorting openings, but only six are illustrated for this embodiment. The first five sorting openings are provided for receiving U.S. denominations of penny, nickel, dime, quarter and dollar. From there, the coins are conveyed by chutes to collection receptacles as is well known in the art. The sixth sorting opening can be arranged to handle half dollar coins or used to offsort all coins not sorted through the first five apertures. In some embodiments, as many as nine sizes can be accommodated. It should be noted that although only six sizes are shown, the machine may be required to handle coins with twice that number of specifications. The machine can also be configured to handle the Euro coin sets of the EU countries, as well as coin sets of other countries around the world.
As used herein, the term “sorting opening” shall be understood to not only include the openings illustrated in the drawings, but also sorting grooves, channels and exits seen in the prior art.
The sorting disk assembly also includes an upper, rotatable, coin moving member 21 with a plurality of fins 22 or fingers which push the coins along a coin sorting path 23 over the sorting apertures 15, 16, 17, 18, 19 and 20. The coin moving member is a disk, which along with the fins 22, is made of a light transmissive material, such as acrylic. The coin driving disk may be clear or transparent, or it may be milky in color and translucent.
The fins 22 of this prior art device, also referred to as “webs,” are described in more detail in Adams et al., U.S. Pat. No. 5,525,104, issued Jun. 11, 1996. Briefly, they are aligned along radii of the coin moving member 21, and have a length equal to about the last 30% of the radius from the center of the circular coin moving member 21.
A rail formed by a thin, flexible strip of metal (not shown) is installed in slots 27 to act as a reference edge against which the coins are aligned in a single file for movement along the coin sorting path 23. As the coins are moved clockwise along the coin sorting path 23 by the webs or fingers 22, the coins are rotated by the fingers 22, so as to pass through the sorting openings 15, 16, 17, 18, 19 and 20 according to size, with the smallest size coin passing through the first aperture 15. As they pass through the sorting apertures, the coins are sensed by optical sensors in the form of light emitting diodes (LEDs) (not shown) and optical detectors (not shown) in the form of phototransistors, one emitter and detector per aperture. The photo emitters are mounted outside the barriers 25 seen in
As coins come into the sorting disk assembly 11, they first pass a coin sensor station 40 with both optical and inductive sensors for detecting invalid coins. Invalid coins are off-sorted through an offsort opening 31 with the assistance of a solenoid-driven coin ejector mechanism 32 having a shaft with a semicircular section having a flat on one side, which when rotated to the semicircular side, directs a coin to an offsort transition area 48 and eventually to an offsort opening 31 that is located inward of the coin track 23.
The coin sensor station 40 includes a coin track insert 41 which is part of a coin sensor assembly housed in housing 52. This housing contains a circuit module (not seen) for processing signals from the sensors as more particularly described in U.S. Pat. No. 6,729,461.
Under the insert are two inductive sensors. One sensor is for sensing the alloy content of the core of the coin, and another sensor is for sensing the alloy content of the surface of the coin. This is especially useful for coins of bimetal clad construction. The two inductive sensors are located on opposite sides of a light transmissive, sapphire window element 49.
The coin track insert 41 is disposed next to a curved rail (not shown) which along with edge sensor housing 45 (
A housing shroud 50 is positioned over the window element 49, and this shroud 50 contains an optical source provided by a staggered array of light emitting diodes (LED's) for beaming down on the coin track insert 41 and illuminating the edges of the coins 14 as they pass by (the coins themselves block the optical waves from passing through). A krypton lamp can be inserted among the LED's to provide suitable light waves in the infrared range of frequencies. The optical waves generated by the light source may be in the visible spectrum or outside the visible spectrum, such as in the infrared spectrum. In any event, the terms “light” and “optical waves” shall be understood to cover both visible and invisible optical waves.
The housing cover 50 is supported by an upright post member 51 of rectangular cross section. The post member 51 is positioned just outside the coin track 23, so as to allow the optical source to extend across the coin sorting path 23 and to be positioned directly above the window 49.
Referring now to
The new machine 60 is provided in two embodiments, one with sorting openings like the openings 15-20 and another with only a single coin collection opening similar to the largest of the sorting openings 20 seen in
The present invention is also applicable to an embodiment having coin sorting openings 15-20 for receiving valid coins of respective sizes corresponding to different denominations, either with or without coin detectors at the openings 15-20.
The coin machine 60 has a base member 61 for supporting a sorting plate 62 having a coin track 63 passing along an outside reference edge 64, 65, 66 for the coins that is formed by base member arcuate portion 64, an edge sensor assembly 65 and an upstanding rail 66. The coin track 63 has a width defined by the largest size of coin to be processed by the machine 60. Some additional offsorting slots 68, 69 and 70 have been provided for coins not in position along the reference edge. A coin sensor assembly 67 now includes a reflective-type optical sensor and is positioned to the inside of a coin track 63, ahead of the coin sorting slots (not seen in
As seen in
The present invention has provided an offsort opening within a coin track in a substantially round sorting disk. The offsort arrangement will handle coins of many sizes using an offsort opening that is narrower than the diameter of the smallest coin. In this machine 60, coins can be moved up to 4500 coins per minute along the coin track 63, and the offsorting arrangement has been configured to perform at this coin processing rate.
It will be apparent to those of ordinary skill in the art that modifications might be made to these details to arrive at other embodiments without departing from the spirit and scope of the invention, which are defined by the following claims.
