SU70443A2 - Gramophone with mechanisms for the automatic return of the tone to the beginning of the recording and the walls of the records - Google Patents

Description

The main author's certificate No. 60736 describes a gramophone with mechanisms for the automatic return of the tonearm to the beginning of the recording and the change of records, which can be played once or repeatedly from both sides. The control of the inclusion of the plates is carried out in the phonograph by means of electromagnets, and a multi-contact rotary switch rotated by the tonearm is used to automatically turn on the electromagnets by the plate changer mechanism or repeat its playback.

In the specified gramophone, at the end of playing a record, the sound groove at the end of the record includes an electromagnet, which actuates a mechanism for rotating or changing the record. If the groove is damaged or not at all, then the electromagnet is turned on, it will not, and the mechanism will not work. In another case, if the groove is damaged in the middle of a recording, then the adapter (or tonearm) will be

stand in one place, and the gramophone will sound on the same note until the record is removed.

The present invention aims at eliminating the aforementioned disadvantages by automatically removing a record player from a disc in which the sound track is damaged.

According to the invention, this is achieved by the fact that the power supply circuit of the electromagnets for changing the plates and repeating playback is conducted through a contact on the lever, controlled by the adapter's feed mechanism and interacting with the lever mounted on the switch rotated from the splitter, periodically repelling the said lever, controlled by the adapter so that when the adapter moves, the contact to the body on the lever, which, if the adapter stops, as a result of the needle falling into the damaged furrow, is prevented ku plate remains in the retracted position

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Subject invention

A gramophone with mechanisms of automatic return of the tonear to the beginning of recording and changing records according to author's certificate No. 60736, characterized in that in order to automatically remove a record player with a damaged sound track from the disc, the power supply circuit of the electromagnetic change of records and repetition of the game is conducted through pin 15 on lever 13, friction associated with adapter feed mechanism

and its end interacting with the lever 17 mounted on the bristle 10, receiving rotation from the player spindle, periodically repulsing the lever 13 moved by the adapter and thereby preventing the adapter 15 from closing the contact housing 15 when the adapter stops, as a result of a needle falling into the damaged the groove of the plate remains in the retracted position and closes with the bent end of the rotating lever 17.

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