Hi, again, Doing stuff by hand can be boring and is not always appropriate (and plagiarizing is?). So Dolge reports > In America two inventors patented hammer-covering machines in 1850. > Rudolf Kreter...patented a most ingenious but complicated > machine...Frederick Mathushek's patent of 1850 was for a hammer > covering machine of much simpler construction... Nothing in patents issued during 1850 (6981-7864); the first-mentioned machine is 9526 Piano action; R. Kreter, 04.01.1853 Searching tips from <http://www.uspto.gov/>: > ccl/84/254 - Hammer heads: Improvements in the striking parts of the > hammer and in hammer-felts. > SEE OR SEARCH CLASS: 144, Woodworking, subclass 29 for piano-hammer > felting. which is > ccl/144/29 - Piano-hammer felting:...Machine adapted to fold > glue-covered felt about and secure it by pressure to a piano-hammer. > SEE OR SEARCH CLASS: 156, Adhesive Bonding and Miscellaneous Chemical > Manufacture, subclasses 349+ for surface laminating apparatus, in > general. Still, nothing 'cept Kreter's turns up in the expected time frame - arg. Where's Mathushek's? Parts manufacturing goes quickly and accurate enough, no real need to automate but we have ~four actions' worth of bushings to do soon - any leads on an expired patent worth copying? At least for keys, 470276 - Machine for bushing mortises; P.H. Wright, 08.03.1892 looks promising. Cheers, Clark
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