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unusual gears

robsryder

Motorcycleton
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more here -

http://www.lisaboyer.com/Claytonsite/Claytonsite1.htm
 
I couldn't make much sense out of the 2nd one. The first one shows gears - even odd shaped gears - that are symetrical, one gear to the next. So, when placed correctly as the radius of one gear gets bigger the corresponding radius of the mating gears gets smaller. This is true for the oval gears and the spiral gears. The square gears have the mesh of the teeth changing slightly as a gear moves from the corner to the center, but the mesh is still close enough to turn the gears.

The oval gearset appears it could actually have a practical application to change rotary motion to reciprocating motion. (Think crankshaft) But you can do this with a round gear too, but with oval gears it might be possible to alter the length of the stroke on the fly.
 
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