SU40140A1 - Electronically driven metronome - Google Patents

Description

The proposed electric metronome operates from the lighting network by plugging in the plug, from which the wires go to the electric metronome, in the primary winding of the transformer-gnome, the secondary winding of which is connected to electromagnets attracting measles and zastah (with a drummer to produce a dry short tap, wherein the electric current is turned on for a short time, and the rest of the swing time is turned off.

FIG. 1 shows the general, metronome type; in fig. 2 shows separately the engagement of the metronome tambour with the electromagnetic spring of the electromagnet; in fig. 3 shows the same gearing in the second projection.

An electric metronome is arranged as follows: In wooden case 1, below the rear wall, a transformer-gnome 2 is inserted, into the primary winding of which electric current is supplied from the lighting network, and then the current goes to the screw terminal 3 and through the spring contact 4, the core spring o, the pin 6 and the spring 7 falls into the holder 8 and then into the contact spring 9; the current does not go further with the quiet position of the tiller 10, and in order

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for the electric current to pass through the primary winding, it is necessary that the pilot 10 be slightly inclined to the left until the spring 9 touches the contact 11, through which the current can escape into the lighting network.

As soon as the primary circuit is closed, DO the secondary winding of the transformer generates an electric current that passes through the electromagnets 12, attracting the measles 13, and with it the crust spring 5, at the end of which the striker 14, which produces a short circuit, is strengthened. cue dry knock on the wall of case 1, or a specially inserted membrane.

Simultaneously with the impact, the primary circuit is broken in contacts 3 and 4, and at the same time a tooth 15 attached to spring 5 will catch on tooth 16 fixed in the rear wall of case 1, so that spring 5 cannot return to its initial position and the circuit will remain open between pin-1 and 3 and 4.

During the return movement of the tambourine 10, the protrusion 17 of the yoke 8, on which roller 18 and .ch 19 are located, will start to lift the tooth 15 by the roller 18 gradually. But before the teeth 15 and 16 are unhooked, the doggie 19 will be pressed down and tooth 15 without disengaging it, since

It is made from a weakly spring, one to one to hold it to the lining 20, after which the teeth 15 and 16 are disengaged and the tooth 15 will hook on the pawl 19 and will start to fascinate the character 10 to the right.

After tooth 15 and dog 19 disengage, the talon -10 will continue to press its movement to the right, then, stopping, it will move to the left, and the primary zone will close only after spring 9 contacts contact 11 At this moment there will be a knock from the striker 14.

The next beat will be received after the dial finishes its movement to the left, returns completely to the right and then, with a new move to the left, spring 9 touches contact 11. Thanks to such a device, 10 can have smaller dimensions than with spring metronomes.

The sleeve 8 is insulated from the axis 21, on which the mandrel 10 is fastened, by means of an ebonite cylinder 22 fixed on the axis 21.

Adjusting the tempo of the metronome is done by the foreground method by moving the load .23 on the master 10.

Prishmet goiter reten.

1. A metronome with: an electromagnetic drive that is distinguished by that, which is good, that it has measles LZ-electromagnet 12, .. is equipped with a tooth 15, that serves to engage in a fixed ynop

; on the wall of the metronome and, with the subsequent removal of this support from the stop, the action of the roller 13, replicated on the taller, to grip the spring pawl 12 on the taller and thereby pushing the latter with the force of the spring 5.

2. Form of metronome performance according to: p. 1, characterized in that the winding circuit of the electromagnet has a contact mounted on the master, a spring 9, interacting with a fixed contact 11 with the aim of obtaining short current pulses during tilting times of one torsion from one of the extreme positions.

-Fig

Fig 2

Eksvsrt I, Editor L. V. Potashev

; Type .., Prvmpolvgr f.: Taybovska,. 12 Zack. 1444