From Wikipedia's Screw Press Page: the screw shaft can be driven by a handle or a wheel. It works by using a coarse screw to convert the rotation of the handle or drive-wheel into a small downward movement of greater force.
Basically the screw press creates a strong force to be exerted on an object with minimal effort from rotating the handle or wheel - the screw makes it possible.
Thanks to the deliciousness of olive oil and wine, the screw was invented - so thanks grapes & olives!
Post a Comment