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Finally, someone in DC with a set of balls!! No apology required!
tony cooper wrote:
snip Well, Sarah Babbit - a Shaker in Massachusetts - notched a tin disk in 1810, attached it to the spindle of her spinning wheel, and cut shingles with it. If Sarah hadn't come up with that, would Michel have thought to replace the spinning wheel with an electric motor to make it portable? Many inventions are simply progressions from some previous form of the device. There are other references to circular saw blades going back to the 1700s, so Sarah may have added to the progression by attaching hers to a spinning wheel. That's the story I've always heard. People have the idea that the Shakers were/are Luddites, but nothing could be further from the truth. For example, one of the main sources of income for the Shakers was the washing machines that they basically invented and then built and sold to hotels at a considerable profit. Incidentally, Sarah Babbit was not the only woman who made a huge contribution to "cutting edge" technology (couldn't resist that terrible pun)--a French woman, whose name I don't remember, invented the welding process that made the bandsaw possible. And, on the subject of hand-held circular saws, the Craftsman that I own is direct drive, no gears involved. Allen |
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