| 摘要 |
<p>PURPOSE:To obtain a simple device performing reproduction freely in both driving states of a constant speed and a high speed by selecting reproducing tracks freely with a track selecting means without depending upon the driving direction of a magnetic tape when drives in high speed. CONSTITUTION:Capstans 2, 4 revolve integrally with flywheels 14, 16 formed with gears 6, 8 and gears 10, 12 on the outside circumferences. One way clutches 28, 30 are formed between a driving disc 22 rotating integrally with a motor shaft 20 of a motor 18 revolving in both forward and backward directions, and a gear 24 loosely fitted to the shaft 20 and a pulley 26. The clutch 28 transmits the revolution of the motor 18 in an arrow 23 direction to a geear 24 and this revolution is transmitted to a cam 36b rotated integrally with a gear 36a by means of gear trains 34a-34c. The clutch 30 transmits the revolution of the motor 18 in an arrow 38 direction to the pulley 26, and this revolution is further transmitted by a belt 40 to the flywheels 14, 16, so that the flywheels 14, 16 are revolved respectively in arrow 42, 44 directions.</p> |
