Patent GB-1224563-A (GB)
Title: Dollar bill or like paper currency collector
Inventor: HOOKER DONALD EDWARD
IPC: G07D7/00
Filed: 1968-04-24
Abstract: 1,224,563. Paper currency collector. ROWE INTERNATIONAL Inc. 24 April, 1968 [26 April, 1967], No. 19409/68. Heading G4X. A dollar note or like paper currency collector comprises a passage 56, pairs of rollers 10, 12; 18, 20; 24, 26; and 42, 44a extending into the passage for propelling the note from the passage entrance to the exit where it is collected, means for serially performing a plurality of tests on the currency while it traverses the passageway, and means immediately operable on failing any one of the tests for reversing the roller drive and returning the currency to the entrance of the passage 56. In passage 56 a magnetic reading head M tests the magnetism and line spacing of the note, a lamp L 2  and photo-cell P 2  test line spacing optically, lamps L 1 , L 3 , L 4 , L 5 , L 6  and respective photo-cells P 1 , P 3 , P 4 , P 5 , P 6  monitor the passage of the note, these all being connected to logic circuitry which reverses the feed of the rollers to immediately return the note via the entrance if it fails either test or if the patron attempts to withdraw it illegally by string or paper attached thereto. The note is inserted portrait uppermost and light from lamp L 1  is cut off from photo-cell P 1 sending a pulse through amplifier 101, and OR gate 114 to one input of AND gate 134, the other input of which is enabled from a previous operation. Gate 134 activates a synchronous motor or low slip induction motor 38 driving forward the rollers 10, 18, 24 and 42. AND gate 116 is also enabled, a pulse sent through OR gate 138 to winding 35 of solenoid 36 thus drawing roller 22 away from head M. The note is drawn by the rollers till the leading edge masks lamp L 3 , amplifier 103 emits a pulse through OR gate 114 to keep gate 134 enabled when the rear edge passes L 1 . Gate 116 is inhibited and the roller 22 is moved to press the note against head M. The roller 20 is magnetic and magnetizes lines of magnetic ink on the note, which magnetism is detected by head M. If the number and magnetic intensity of the lines is sufficient a signal is passed, through wide band A.C. amplifier 108 and tuned amplifier 110, of higher value than a voltage in hysteresis circuit 158 and trigger 160 inhibits AND gate 174. If the intensity is not sufficient, trigger 160 sends no signal, AND gate 174 sends a signal to OR gate 178 and reverse drive is connected by bi-stable 128. At the same time the roller 22 is retracted. If the magnetism is too high, detectors 146, 148 cause trigger 154 to reject the note. However, the inclusion of resistor 142 ensures the detectors respond to RMS values rather than peak. values, so a small piece of highly magnetic material on the note will not cause rejection. If the note passes the magnetic test and has reached lamp L 4 , gate 180 is inhibited, thus allowing the photo-cell P 2  to pass signals, to detectors 166, 168, which measure the amount of light passing through the note and hence the number of lines thereon. If the note is sufficient gate 176 is inhibited, if not photo-cell P 5  causes gate 176 to reject the note as before through OR gate 178. If the note passes these tests it is drawn on by rollers 42, 44 and the leading note edge rotates spring-biased lever 48 anticlockwise which blocks photo-cell P 6  thus sending a continuing drive pulse to gate 134. If the patron has attached a long paper strip to the note in order to illegally pull it back, a pulse from photo-cell P 1  is still present, AND gate 117 emits a pulse which returns the note as before. If the patron attempts to withdraw the note by string, one of photo-cells P 3 , P 4 , P 5  (depending on note position) sends a pulse to OR gate 178, thus rejecting the note. If the note goes past lever 48 and withdrawal is attempted, the lever rotates clockwise and he will only tear off part of the note. When the rear note edge has passed photo-cell 106 a bill collected signal is sent from gate 124 and the motor is stopped. The amplifier 110 has Q values between 20 and 160 and that of amplifier 102 between 3 and 28.