pel- A new method, which is said to be both simple and cheap, lers and beams from entering too deeply hito it. there is a disk, m*, against which a friction roller, o', carried is described by Professor Q-. O. Sars, of the University of by the lever, o, bears. The lever, o, carries at its upper end… … finer structural conditions, may be drawn off- propellers serving then to move the vessel. DREDGING APPARATUS. This invention was patented through the hand with the crayon on the prepared paper, after the outline has been transferred. Any Scientific American Patent Agency, Novem- correction or…
Patents · Improved · Iron · Consists · Glue · Scientific American · Improved fire · High pressure · Specific heat · Short distance · Electric light · Letters patent · Wrought iron · American supplement · Bent pipe
Internet Archive · Public domain (published before 1931). Free to use for anything.
