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One of the burning questions that are on everyone’s mind these days is, “How many different types of gears are there and what are they used for.” I understand, this question has kept me awake most nights as well. Well put your mind at ease, because I am going to tell you all about several gears and their uses. Gears are used in all most every type of machinery that we use today. A gear is a device consisting of two mechanisms linked together. This combination creates a force or drive that can move an object (Candelora, par.1).
One of the most common types of gear used is the Spur gear. This gear consist of two wheels with teeth or pegged, that when turned the teeth make contact therefore turning the wheels and creating a drive or force. These wheels are mounted on two parallel shafts; one wheel is always larger than the other and rotates at a slower pace than the smaller wheel. The force or drive created is used turn a corresponding gear or move an object (Candelora par. 3). Spur gears are used primarily in clocks, but also in oscillating sprinklers; wind up alarm clocks, and washing machines.
Although useful, the main flaw in spur gears
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Similar to the helical gear is the bevel gear. To improve upon the design of the spur gear, helical gears were introduced.
Another type of gear is the ratchet. Ratchets are also found in some of the old school carjacks the one used with the bar. Helical gears are used primarily for shifting gears in car transmissions. These gears are used to change direction of rotation or alter force or speed. Without them we would not have most of our modern day conveniences and then where would we be.
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