ratchet

A ratchet or rattle, more specifically, cog rattle is a musical instrument of the percussion family and a warning/signaling device.

And have fun turning this making a lot of. Sound. You can play a little short rhythms. Or one sustained sound and that is how to play the COG rattle or commonly known as the ratchet.

The ratchet is classified as a scrape idiophone or cog rattle (though it is not actually a rattle in the precise sense of the word) of Europe. It is called for sparingly in the orchestral and band repertoires, and might better be thought of as an auxiliary sound-effects instrument.

Given the ratchet is so old, it's first incantations are not known, but what is most likely is that the first version of a ratchet was a piece of wood loosely tied to a stick, then spun around. Later uses of the ratchet were used for warnings in wars, buildings, or in public.

Ratchet mechanisms are very useful devices for allowing linear or rotary motion in only one direction. Common examples of ratchets are clocks, jacks, and hoists.

Red squirrels make a ratchet-like call very often.

A ratchet (occasionally spelled rachet) is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools. The word ratchet is also used informally to refer to a ratcheting socket wrench.

Throughout history it has been used as everything from a warning siren to an important aspect of religious ceremonies. This days you might see one at a football match, or at the back of an orchestra. This popular wooden ratchet or football rattle is perfect for when you need to make a lot of noise!

It should be noted that there is some ambiguity in the use of the term ratchet wrench, as it can also be used synonymously with the term socket wrench. Socket wrenches are ideal in that you can interchange the size of the socket to suit the specific fastener application.

Ratchet mechanisms are very useful devices for allowing linear or rotary motion in only one direction. Common examples of ratchets are clocks, jacks, and hoists.

The two main styles of ratchets are round head and pear head. Round-head ratchets have a head that is, well, round.

A grager (Yiddish: גראַגער, 'rattler'), also gragger, grogger or gregger, is a noisemaking device, most commonly a ratchet, used to make noise by the congregation when the name of Haman is read out during the recitation of the Megillah in the synagogue during the celebration of Purim in order to blot out Haman's name.