ed on the theory that at certain ele- nate in position and Insure a complete circulation. ward to be used by families, thus saving the cost of new cans, vations there is a natural electric current, by taking advan- An improved tube fastening for boilers, contrived so an important item when the… … jected to a shear cut by the reciprocation of the knife or M. Dupuy de Z/mie, in Comptes Bendus. knives in the arc of a circle; the knives cut at every stroke NORTON'S JBUIT CAN. i^ I » > ^ backward and forward. AN IKPBOYEHENT IN NECX TOEES. Mr. J. K. Boswell, of St. Louis, Mo., has a device for…
Patents · Bronze · Copper · Color · Scientific American · Iron · Trade catalogs · Mosaic gold · Copper bronze · Gold bronze · American supplement · Coal Tar · Nitric acid · Sulphuric acid · Address munn
Internet Archive · Public domain (published before 1931). Free to use for anything.
