| 摘要 |
It incorporates a mattress (1) pivoting on the frame by means of projections (2), with limitation of the down or up motion of the longitudinal sides, by means of discs (3) which act as excentrics of a shaft (5) on which is mounted a demultiplication device or a coinoperated direct current motor (6) with simultaneous and synchronous playing of a music or prerecorded sounds, the discs (3) being provided with protuberances (4), having bearings (4') for the alterning resting of the mattress (1), and being situated in a radial position and closer to the extremity, so that the protuberances are on diametrally opposite positions and at different heights with respect to the mattress (1). <IMAGE> |
