SU36970A1 - A device for reproducing sound by recording it on a tape - Google Patents

Description

The proposed device relates to a device that reproduces the sounds that were recorded on a tape, and consists in the fact that the pin entering the recesses of the tape when moving last is connected to a lever, one end of which is pivotally connected to the stop, and the other end is attached to the membrane reproducing sounds.

In the attached drawing of FIG. 1 shows a device according to the invention; FIG. 2-modification of the device; FIG. 3-device with the use of an endless belt.

In the resonant box 1, coils 2 and 3 are placed; the tape 1, winding off the coil 2, is wound on the coil 3, passed before the coil 4. The blunt blade pin 5 touches the bottom of the tape groove and therefore receives vertical movements depending on the curvature of the groove during its spin. This pin is attached to the lever 6, rotating in the hinge, and the end of the lever is attached to the membrane 8.

Holes 9 can be drilled in the box 1, covered by the wings 10

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by a different amount to adjust the intensity of the sound.

FIG. 2, on which the same designations are preserved, represents a version of the previous apparatus, in which some parts are located outside the resonating box.

It may be necessary to make the phonograph repeat the same phrase an indefinite number of times; this can be achieved with a tape, in which both ends are connected in the form of an endless band.

To increase the length of the spoken phrase, several grooves can be engraved parallel to each other, but having a slight slope to the tape axis, so that after gluing the opposite ends of the tape, the end of the first groove approaches the beginning of the second, the end of which approaches the beginning of the third and dd

It is also possible to apply both sides, tapes, sticking together after twisting its ends.

FIG. 3 depicts a variant of the apparatus shown in FIG. 1. hearing-hearted berkodechyri LANTY pr; similar to the one described above / Lente, arabot. not fibKqd TibiM in the drawing by the engine, is passed through three coils 2, 3 and 4; the lever 6 with the reproducing pin 5 attached to it can move in the horizontal plane BOKftyr | foll, fixed at the top of the cone of the Membrane 8. Another square is quite significant load 12. The pin 5 can move perpendicular to the general movement of the tape, which allows follow the slope of the grooves of this tape. On the other hand, the load of 12 is sufficiently large so that the vertical oscillations of the lever do not exert on him

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When sliding along the pipeline like a tape Ij ,, the last transversal & vibrations to lever 6, Lever 6 vibrates the membrane 8, which reproduces the sound recorded on the tape.

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The subject of the patent.

A device for reproducing the sound tft of its recording on a tape, characterized by the use of a lever b, carrying a pin 5 walking along the groove of the tape with sound recording and fastened with a hinge 7 on the instrument wall, and a free end connected to the membrane 8 (Fig. 1, 2 3).

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