الصناديق الموسيقية. - الزنبرك صندوق ادخار .. الآلات التي نستخدمها كل يوم

Musical Boxes - Spring Savings Box .. The instruments we use every day and how they work

Musical Boxes:

Musical boxes also work by means of springs. When these springs are unwound and uncoiled, they turn a round metal part called a cylinder. Small pins are fixed on the walls of this cylinder from the outside, and each pin is assigned a note of the tune played by this musical box.

When the cylinder rotates, these pins are raised up - one by one - and meet a row of metal rods. The pins tap these rods, causing them to vibrate and make a sound.

A specific part enters into the design of the music box whose job is to make the movement of the cylinder more regular. You may have noticed that the spring toy starts its movement quickly and suddenly slows down. Therefore, musical boxes are equipped with a speed regulator that prevents the cylinder from rotating quickly from the beginning of its movement. This regulator is a small (shovel) that rotates and turns under the influence of the movement of the spring orbit. When this shovel is turned, it strikes the air, and this process makes it act as a brake, preventing the spring from unwinding and unfolding too quickly. When the spring unwinds a little and its movement slows down, the speed of the shovel slows down, and thus the force of the effect that it had at first is removed, and the energy that it had stored from the beginning is reduced. In this way, the musical box turns in a more regular manner than the spring toy.