PURPOSE: To prevent a wind phenomenon, by providing a spring which energizes a tape in its take-up direction between a reel disk driving rotary wheel and a reel disk which turns in a body with a reel at the roll-out side of a device which reverses automatically with a single capstan.

CONSTITUTION: A shaft 11 is planted on the bottom surface of a reproducing device which reverses automatically by the forward/backward revolutions of a single capstan. A roll-out reel 11a and a reel drive disk 11b which turns in a body with the reel 11a are rotatably attached with a play to the shaft 11. At the same time, a roll-out reel driving rorary wheel 11c is fitted with a play to the shaft with a close contact to the lower face of the disk 11b. A spring 22 is hooked between the wheel 11c and a projected part 20 of the disk 11b, and as a result both the disk 11b and the reel 11a are always energized clockwise. A pin 21a planted to the wheel 11c presses the part 20 and drives the desk 11b and reel 11a in the same direction. Thus the slackness of a tape 13 which is caused while the reel 11a is taking up the tape can be absorbed to prevent a wind phenomenon. This prevents the deterioration of the sound quality.