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Brace
B68-647
 
 
Status: Open
Item no.: 177214547648
Current bid: 0 ( Convert )
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Ending in: 28 days, 05:29:41
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Rate: B68-647
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B68-647 BRACE ATTACHMENT. Duchemin Patent. Patented in 1912 by one Peter Duchemin of Spokane, WA; it consists of a ring gear that can be chucked into a brace with two planetary gears of different sizes, so that when the brace is turned the two planetary gears rotate at different speeds. There is a chuck that can be attached to either of the planetary gears to rotate bits at different speeds, and handle to hold the whole thing steady, which can be moved to either side. Listed as never manufactured by DATAMP, but this one is marked as made by what looks like the A.D.A. Mfg. Co. of Colfax, WA. Apparently it never occurred to them that it would be easier to just turn the brace faster or slower; anyhow, it never caught on and this is the only one we've ever seen. Overall clean with some grunge and works smoothly. From the collection of Jim and Christa Schoenky. Good+ 100-200

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