cog rattles

Scraped wheels, or ratchets, are commonly referred to as cog rattles , but they are actually cogwheels with a prolongation of the axle serving as a handle, and with a wooden tongue affixed to the frame. When whirled, the tongue strikes the cogs one after the other, causing a loud, clappering noise. Here the notched and the scraping sticks are mechanized and combined into a single unit that can be both held and sounded by one hand. Such mechanized scrapers are found...