SU14414A1 - Adaptation for automatic gramophone sound box permutation - Google Patents

Description

The present invention relates to a device for automatic transposition of a gramophone sound box moving along a guide rod, one end of which is hinged on the top of the gramophone drawer, and the other one is lifting, with the aim of moving the sound box after the needle reaches sound recording. The invention consists in that the guide rod is connected to another rod articulated with the long arm of the lever, whose short arm is under the action of a cam controlled by the driving mechanism of the gramophone.

In FIG. 1 is a front view of the proposed fixture; FIG. 2 is a side view and FIG. parts of the sound box of the gramophone on the side.

On the cover 16 of the gramophone box in the sleeve 13 a guide rod .1 is pivotally attached, provided at one end with a thrust clutch 12 and lying at the other end in a fork with roller 2 of the rod 3 moving vertically in the clutch 5, also mounted on the cover 16

boxman. The rod 3 is articulated with the long arm of the lever 7 by means of the clutch 6 movable along the rod 7. The short lever shoulder 7 is under the action of the cam 8 connected by gears 9 and 10 with the gramophone mechanism. According to the sound recording of the plate 14 rotating on the disk 13, the needle of the sound box 11 of the gramophone walks, equipped with a roller 17, along which the rod 1 moves. The rod 7 and the axis of the gear wheels 9, 10 are fixed on the bracket 18.

The operation of the device is as follows: gears 9 and 10 are calculated so that cam 8 makes a full revolution once during the time for which disk 15 will make the number of revolutions necessary for the needle box 11 to go through the entire sound recording of the record from the beginning to the end. A cam 8 at the end of the needle of the plate will push the lever 7, which with its long arm will lift up and pull the rod 3 out of the coupling 4. The fork with roller 2 will therefore lift the rod 1 and the latter will come in contact with the roller 17 of the sound box 11. The sound box will then be connected. slide into its naughty position, adjustable by stop 12, its needle enters the groove of the sound recording of plate 14 and the diaphragm moves towards the center again.

The subject of the patent.

A device for automatic permutation of a gramophone sound box, moving along a guide rod, one end of which is articulated

mounted on the lid of the gramophone box, and the other one is designed as a lift to move the sound box along the marked rod with the needle reaching the end of the sound recording, characterized by the fact that the guide rod 1 is connected to the rod 3 articulated with the long arm of the lever 7, the short arm of which is under the action of the cam 8, controlled by the driving mechanism of the gramophone.

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