on with either of the branch lines by means of an This operation is easily performed by taking hold of the ordinary switch, to which it is connected by the trans- A Good Example. paper at the two opposite corners with the thumbs and fore- fingers, catching the paper inside of the gummed edges, the… … BELL'S PATENT COMBINED RAILROAD SWITCH AND FROG. very fast. The connecting switch bar can be placed either above or under the sleepers as a library of a thousand volumes of reference and miscellan- is that of the ordinary switch. eous books, and have fitted up a hitherto vacant apartment in Patent…
Patents · Iron · Machine · Art · Velocipede · Scientific American · Address · Turbine water · Steam engine · Coloring marble · Patent granted · Patent office · Office twenty · Twenty days · Young men · Steam boiler
Internet Archive · Public domain (published before 1931). Free to use for anything.
