| 摘要 |
1,176,602. Threading and feeding record tapes. WARWICK ELECTRONICS Inc. 21 Feb., 1968 [11 Sept., 1967], No. 8450/68. Heading G5R. A tape feed-out means 56 is movable under the control of a manually operable member 28 from an inoperative position, Fig. 1, to an operative position, Fig. 4, in which it feeds tape from a supply reel or cartridge 38 past transducers 50, 52 to a take-up reel 48, seizure of the tape by the take-up reel 40 causing the feed-out means 56 to return to its inoperative position. As shown, rotation of control knob 28 to the "automatic tape feed" position shifts a link 174 to the left, Fig. 4, bringing a belt 242 of the tape feed-out means 56 into contact with the tape on the supply reel 38, bringing a power take-off gear (228, Fig. 3) into engagement with capstan 42, and swinging tape guide 58 in towards the hub of take-up reel 40. The link 174 is held in this position by a latch 288 until the tautening of the tape on seizure by the take-up reel 40 causes a lever 60 to release the latch 288. The tape transport is bidirectional, with two capstans 42, 44, on opposite sides of the tape, and associated pinch rollers 46, 48. Automatic reversal of the tape drive is initiated by the engagement of a hole in a leader tape with a hook (460, Fig. 6) carried by a post 458, the heads 50, 52 being simultaneously shifted to engage different tracks. The knob 28 controls normal forward and reverse operation through a slide 148 and fast forward and fast reverse winding through a second, lower, slide (150) which is engaged by depressing the knob 28. During fast winding the tape is held clear of the heads 50, 52 by a member 426. Each reel 38, 40 is retained on its spindle (510, Figs. 14 and 15) by a spring-latched member (518) pivoted in the bifurcated outer end of the spindle so as either to form a longitudinal extension of the spindle or to be turned sideways to retain the reel and engage a notch therein to provide a driving connection. |
