880. PLAN OF HYDRAULIC ELEVATOR. MECHANICAL INVENTIONS. HYDRAULIC ELEVATOK FOB CANAL BOATS. cases is a factor of the greatest importance. These and like One of the serious defects of canal transportation is the difficulties have been overcome by means of a hydraulic ele- Dry Copying Process.—After… … A correspondent, writing from near Leadville, Col., TBANSVEBSE SECTION. tion is to provide a drill that will cut a perfect channel in under date of June 1st, says they have just had a fall of the rock, and at the same time dress both faces of the said another, especially if the height between the…
Patents · Improved · Manufacture · Patented · Novel · Iron · Scientific American · Bleaching · Send stamp · Trade catalogs · Ordinary bleaching · Price indicator · Electric light · Sewing machine · Cast Iron · Luminous image · Post office
Internet Archive · Public domain (published before 1931). Free to use for anything.
