of in connection with fixed electro-magnets ar- in less than two nuts. As the screw by this system travels rying a saddle for the support of the ledgei-s and framing, ranged in a circle around the armature wheel. The construc- up with its scaffold, the same screws will do for any height from which… … placed every 2 ft Kenzie, of Eah- 6 iu. iu height. way, N. J, SCREW SCAFFOLDIXO. 11879 SCIENTIFIC AMERICAN, INC
Patents · Patented · Color · Iron · Scientific American · Center · Years ago · Worcester free · American export · Address munn · Paper bag · Yellow fever · Large number · Export edition · Water colors
Internet Archive · Public domain (published before 1931). Free to use for anything.
