| 摘要 |
1,134,532. Selective magnetic tape players. WARWICK ELECTRONICS Inc. 20 March, 1967, No. 13055/67. Heading G5R. A tape recorder using a stack of tape cartridges 20 each having an exposed length of tape extending between reel means 28, 30 which include a reel having a centre drive opening, comprises a frame, a tape drive capstan 155 and magnetic heads 57, 58, 59 mounted at a fixed position on the frame and defining a tape path, all the cartridges being movable simultaneously to move successive cartridges to a position having the exposed length of tape in the tape path. The cartridges 20 are mounted on a horizontally disposed slideway consisting of spaced decks 12, 14 and sides 16, 18. The stack of cartridges are advanced by means of a leader plate 62 and follower plate 64. When it is desired to remove or place a cartridge in the stack, levers 120, 128, Fig. 1B, are squeezed to enable plate 62 to be moved relative to plate 64. Plate 62 has legs 66, 68 which slide in slots 66a, 68a in lower deck 14, Fig. 5. Legs 66, 68 are attached to hollow slide members 70, 72 which are movable along guide bars 74, 76 of the tape recorder frame by means of a motor 94, Fig. 1B, which drives a worm gear 80 and shaft 82 meshing with a rack 78 associated with slide member 70. Plates 62, 64 may be locked to each other at varying distances apart depending on the number of cartridges in the holder so that all the cartridges are moved simultaneously. A feeler (324), Fig. 9 (not shown), on a switch operating member (322) engages a gap 26, Fig. 1B between adjacent cartridges to centrally locate the leading cartridge under heads 57, 58, 59. When feeler (324) senses a gap 26 switch (320), Fig. 9, is closed to operate a relay (400), Fig. 14 (not shown), which stops transport motor 94 and starts a motor 140, Fig. 1A. Motor 140 operates capstan shaft 152, Fig. 1B and a reel drive shaft 156 which is positionable through reel drive openings in a plurality of cartridges 20. Shaft 156 is provided with a spring pressed pawl 159 which drivingly engages in slot 34 in reel 28. When a tape has been played a switch 264, Fig. 5, is closed by the tension of the tape to energize solenoid 270, Fig. 1A. This causes a rod 280 to retract pawl 159 into shaft 156. At the same time motor 140 stops so that tape drive ceases and motor 94 starts so that the next tape is moved into play position. A second tape drive motor (142), Fig. 2 (not shown) is provided to drive tape 32 in the opposite direction by means of a capstan (155a) and reel drive shaft (156a) associated with reel 30. |
