Patent GB-1207463-A (GB)
Title: A combination player for dics and tape-cartridges
IPC: G11B31/00
Filed: 1968-06-28
Abstract: 1,207,463. Combined players for discs and tape cassettes. NIPPON VICTOR K.K. 28 June, 1968 [30 June, 1967], No. 31062/68. Heading G5R. A combination player for discs and tape cartridges consists of a disc playback section comprising a turntable, means for transmitting rotation from a drive motor to the turntable, speed-adjusting means for the turntable, operation change-over means for switching the disc playback section from an inoperative state to an operative state, automatic stop means for automatically returning the changeover means from "operative" to "inoperative" on completion of disc play, a pick-up system, and means for reproducing signals therefrom; also a tape playback section comprising an opening for removably accommodating a tape cartridge housing therein a continuous loop, means for opening and closing a drive motor switch actuated by cartridge insertion or withdrawal, a magnetic head system and reproducing means, means for moving the tape, and means for transmitting rotation from the drive motor to the tape-moving means. Disc playback.-A knob 15, Figs. 1 and 2, is turned clockwise to the "on" position against the force of a spring 41. A contact lever 35 is thereby turned and locked, to lock the knob 15 at "on," and at the same time a switch lever 48 is turned counterclockwise against the force of a spring 53 to permit a switch 107 to close (to energize drive motor 100), and to permit an idler 26 to make contact with a pulley 104 and the inner side of the edge of a turntable 12, Fig. 1, in response to the force of a spring 30, Fig. 2. The pulley 104, on the shaft 101 of drive motor 100, has offset portions 102 for speed selection, the precise position of idler 26 in relation thereto being determined by an idler arm 25 which is pivotable and slidable. The idler arm has a portion normally urged into contact with the bevelled underside of a cam 20 on the shaft of a speed-adjusting knob 14, and also has a stud maintained in contact with the circumferential surface of the cam. Automatic stop (single side).-A key lever 42, in the top right hand corner of Fig. 2, forms part of the mechanism operated through a rod 40 by the " on-off " knob 15, and is pivoted clockwise and locks the contact lever 35, in the "on" position of knob 15. Lever 42 is also shown in Fig. 4, but for this embodiment only parts 42 to 61a of Fig. 4 are relevant. At the end of play of one side of a disc, a cam 61, Fig. 4, is rotated once in direction e by pick-up return mechanism; a lever 59 is thereupon pivoted in direction f, pulling a rod 60 in direction g. The rod 60 is secured to a pusher 57 with which lever 42 is in contact, so lever 42 is pivoted in the direction h. This action serves to unlock the contact lever 35, Fig. 2, in consequence of which knob 15 is restored by spring 41 to the "off" position, and switch lever 48 is turned clockwise by spring 53, thereby opening switch 107 by stud 56 and moving idler 26 away from pulley 104 and turntable 12  by engagement of stud 54 with an extension 29 of idler arm 25. This is the position of Fig. 2. Automatic stop (disc stack).-When the last disc held by a spindle 13, Fig. 1, drops on to the turntable, a disc support 18, Figs. 1 and 4, drops by its own weight, whereby a stud 63 on its shaft 62 pivots levers 65 and 66 in the direction i. A pin-and-slot connection between lever 66 and pusher 57 thereby serves to pivot pusher 57 in the same direction, in consequence of which pusher 57 comes into contact with the arm portion 42b of key lever 42. This is the position of Fig. 4. At the end of play of the last disc the sequence described above under "automatic stop (single side)" takes place. Tape cassette operation.-The tape playback section 70, Fig. 1, includes a tape deck 71, Fig. 2, formed below the motor board 11. When a tape cassette 90, Fig. 5, enclosing an endless tape, is slid along the deck 71 it is guided by rollers 82 and 83, Fig. 2, until roller 83 engages a notch 94 in the side of the cassette and is retained therein by spring pressure. In this position a movable contact member 109 has been engaged by the top of the cassette and raised to close a switch 108 whereby motor 100 is energized to drive a flywheel 73 and an attached capstan 74. The tape 92 is engaged between capstan 74 and a pinch roller 93, Fig. 5, provided in the cassette; it is also in contact with a magnetic head 77 and a guide 79, Fig. 2. Track switching is provided for by a sensor 80 and a solenoid 81 which moves head-holder 78 up and down. A two-way micro-switch (not shown), which in its normal position connects the disc pick-up to an amplifier, has its actuator moved by contact with the front of the cassette to the other position in which the magnetic head is connected to the amplifier. The switch 108 may be replaced by a micro-switch whose actuator is contacted by the front of the cassette. The tape section may be shut off by withdrawing the cassette either during, or after completion of, playback of the tape.