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Individual
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Priority to ES0213085UpriorityCriticalpatent/ES213085U/en
Publication of ES213085UpublicationCriticalpatent/ES213085U/en
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
Improved loudspeaker apparatus, of the type comprising a membrane that presses the reproductive arm on a disk mounted on a plate coupled to an electrically powered motor, characterized in that a metal plate is mounted on the bottom base of the swinging support of the membrane, connected by means of a wire to a terminal of the motor, whose plate comes into contact pressed with a metal lug connected to a pole of the battery, the other of which joins the second terminal of the motor; said lug is integral to the head of the reproductive arm, so that by closing the electric circuit on the plate integral with the membrane, the motor is put into operation by dragging the disc carrier plate on which the corresponding needle of the reproductive arm acts, maintaining the contact between the lug and the plate until the needle passes to the inner neutral groove of the disc, at which time said lug stops being in contact with the plate integral with the base of the membrane, interrupting the electrical circuit. (Machine-translation by Google Translate, not legally binding)
ES0213085U1975-06-121975-06-12Improved talking device (Machine-translation by Google Translate, not legally binding)
PendingES213085U
(en)