Variety playing sound reproducing device

Claim 1

An improved sound reproducing device comprising: a casing; a center shaft mounted within the casing; a turn table fixedly attached to the center shaft; a record disc mounted on the turn table and having a plurality of recorded grooves, each having a start and an end point of sound reproduction; a constant torque spring motor for driving the turn table; a tone arm mounted within the casing; a pickup carried by the tone arm, the pickup being positioned above the record disc; return spring means mounted within the casing for biasing the pickup toward the start point of sound reproduction on the record disc; a sound transmitting member disposed within the casing; a speaker connected to the sound transmitting member, the sound transmitting member being interposed between the tone arm and the speaker; a pull string for winding the constant spring torque motor, the pull string releasing engagement of the pickup with the record disc when the string is stretched straight under tension to allow the pickup to return to the start point of sound reproduction on the record disc; the constant torque spring motor and turntable each having a face that coaxially confronts the face of the other, a one-way clutch interposed between the turn table and the constant torque spring motor for driving the turn table in a direction of sound reproduction of the record disc, the one-way clutch comprising; a guide face on one of the confronting faces surrounding the center shaft and defining a holding space therearound; a plurality of locking faces projecting radially inward from the guide face and facing a direction opposite from the direction of rotation of the record disc for sound reproduction, the locking faces being unequally spaced around the guide face; a plurality of slant faces, each continuously inclining from a tip end of a locking face toward the guide face; a plurality of generally circular locking pieces freely movable within the holding space around the center shaft, the locking pieces having a diameter larger than the extent of protection of the locking face from the guide face; and a plurality of locking projections extending radially about the center shaft, the locking projections being disposed on the other of the two co-axially confronting faces of the constant torque spring motor and the turn table.