the with a square enlargement or nut having its outer end To understand the direction taken by the luminous rays, two sorts of mining tunnels, the drift and the cross cut, the rounded and screw threaded. The axle box is secured in former always follows or is intended to follow the vein. we must… … are well lighted and that have a very curious The nut or cap which serves to secure the wheel FIRTH'S VEHICLE AXLE. effect. It will, then, allow of animated projec- upon the spindle revolves with the wheel, and tions being obtained without the aid of a special at the same rate of speed, as though…
Patented · Improved · Axle · Iron · Apparatus · Patents · Scientific American · Breech · Rolling mill · Portable hay · Sewing machine · Young fish · Wrought iron · Wood working · Car wheel · Typhoid fever · Patent laws
Internet Archive · Public domain (published before 1931). Free to use for anything.
