The Art of Railroading; 20th century machine shop practice, by L.E. Brookes

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 Excerpt: ...thus reducing the liability of vibration. They nre dust proof. The larger size grinders are provided with renewable, inter-changeable boxes. The Fig. 245. caps are tongued and grooved, making them rigid and not..inble to work loose. The Flanges are heavy and of large diameter. The ti flanges are forced on the spindle, and provided witn grooves arranged to prevent the entrance of dust or dirt to the bearings from the outer ends of the boxes. The Self-Oiling Arrangement insures a plentiful supply of oil, and is of sucli construction that it is impossible for any dust, grit or sediment to reach the bearings. Reservoirs are provided underneath the spindles for holding oil, which is fed to the bearings by means of a "wiper." The wiper is pressed up by a brass spring, and kept (onstantly i:i contact with the spindle. Polishing or Grinding Machine. The machine illustrated in Fig. 247 is so constructed that emery or polishing wheels, even though out of balance, will revolve on their center of gravity and wij run smoothly, and wjl not wound, Polishing wheels do not require balancing when rim on this machine, and will retain their coating of emery much longer than on the ordinary machine. The work will not bump or stutter on the wheel, but passes over smoothly, and any wavy appearance of work is entirely obviated. The bearings are so constructed that they can be Fig. 247. pliable and elastic, or rigid, according to the demand.-f the operator, and the machine can be run at double.he speed of the ordinary machine without heating. Saw Grinder. The machine illustrated in Fig. 248 will grind circular or rip saws f1om 14 inches to 73 inches, and any shape or size of tooth. It has an adjustable stop screw to regulate the depth of the teeth. Size of the wheel, 12 i...