"Solution There are many ways to convert rotary to linear motion, but the example here is perhaps the most simple. Pin one end of a rod to the disc anywhere apart from the centre of the disc, and pin the other end of the rod to a second rod in a guide that is pointing in any direction. Illustration: Jaime Davila The illustration shows the wheel turning anticlockwise. As it moves around, it pulls the rod down and then pushes it up."
"Earlier today I asked you to reinvent a component of the sixteenth century Dutch sawmill, which according to a new book was the world's first industrial machine. You can read that post here, along with some great BTL discussion about the world's greatest inventions. (Spoon or spear? Plough or spectacles? Transistor or trousers?) Round and up Design a machine that turns rotary motion to up-and-down motion."
Design specifications: a machine that converts rotary motion to up-and-down motion using only a rotating disc, two pins, two rods, and a cylindrical guide. The solution pins one end of a rod off-centre on the disc and links its other end to a second rod sliding in the guide, producing reciprocating vertical motion as the disc turns. The demonstration shows the rod being pulled down and pushed up during anticlockwise rotation. Cornelis Corneliszoon used similar conversions in a sixteenth-century Dutch sawmill to drive a carriage and a saw blade from windmill rotation. That mechanization accelerated shipbuilding, trade, and the founding of New York.
Read at www.theguardian.com
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