IN THE END, CRIMSON RINGI want to share with a favorite magazine his small development.
We had a bad, nasty apartment call: rough and very loud. We always flinched when anyone came, and those who called for the first time, too frightened. Although the call was prefabricated, bought – and hung up.

But the patience has snapped, and I decided to remake this “Intimidator” that signaled a more pleasant and peaceful.

Shop “Sports” in the Department for fishermen bought 2 bells, one large, the other smaller. You can use and more – will only nicer sound. But I was limited to two.

A call to rework

Call before alterations:

1 – sound plate (cap);
2 – the tongue of the striker;
3, electromagnet (solenoid);

4 – mounting screw

With a call removed the plate cap (that he was making such a sharp unpleasant sound). Then drilled in the lower part of the firing pin hole with a diameter of 3 mm. Of the strip of aluminum with a thickness of 1.5 to 2 mm produced a bracket, to which hung the bells, using the screw M3. Here it is important only that the bells do not touch each other.

Suspension bells

Pendant bells:

1 – bracket (aluminum s 1,5 — 2);

2 — bells

Curved end bracket with bells attached to the latch striker bolt M3, which previously drilled the appropriate hole with a diameter of 3 mm. was the result of the design shown in the figure.

Call after rework

Call after alterations:

1 – bells;

2 – bracket;

3 – latch striker;

4 – decorative plate (plastic);

5 – mounting screw;

6 – the gap under the bracket

Now when you press the button when the pin-tongue is attracted to the solenoid bracket with the bells when it shakes and you hear a nice “crimson” a gentle sound. Honestly, even nicer guests got to meet!

Would advise even producers interested in and modify these calls.

S. KONDUKOV, design engineer, Krasnodar

Recommend to read

    Blanks of sheet metal with a thickness of 3 - 5mm will be more accurate and easier to bend at home if they are pre-trimmed along the fold lines using the grinder (and if the workpiece is...
    Camera "Polaroid-636" for Amateur filming — something not only good, but in some cases, simply preferred to all others of the kind. After all, it has one advantage, which is not even...