he lower ends of these posts with the but- SELF-LUBKICATING BOX AND SHAFT BEARING. tresses and top chord; and these tie rods are applied in the a feature of great importance. The system admits of the following manner: From the lower end of each post, projeo* use of equally thick rods throughout… … safety in railroad operations is the " torpedo " or alarm sig- nals. This little affair consists of a tin box about the of which is continued to the nearest buttress, the other to the juncture of a post with the top chord. By this means size and shape of the smallest sized blacking boxes. The every…
Patents · Iron · Consists · Water · Scientific American · Copal · Silicon steel · Silicon ore · Steam jet · Emery wheels · Sewing machine · Wrought iron · Steam engine · Tie rods · Top chord
Internet Archive · Public domain (published before 1931). Free to use for anything.
