The Iron Age Volume 91, Nos. 19-26

The Iron Age Volume 91, Nos. 19-26

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ... machine is especially useful in sampling coal and various ores, since it not only reduces the sample to a comparatively fine powder, but thoroughly mixes it into a homogeneous mass. One of the special fields for which it is adapted is in industries where a heavy duty or large capacity machine is not required. This machine can be mounted on timber on an ordinary wood floor, as would be necessary in placing it on one of the upper floors of a factory building, a solid concrete foundation not being required. This machine can be furnished for a belt drive, as shown in the accompanying engraving, or it may be mounted on a cast-iron base with a direct connected motor. In the sampling of coal, an arrangement of a large auxiliary hopper and a sampling chute is recommended by the builder. This auxiliary hopper is large enough to hold a batch of material, the discharge opening being closed by a sliding valve. When this valve is opened the material passes into a second hopper, which is connected with the hopper of the machine, and into which material A Laboratory Pulverizing Device Operating on the Swing Hammer Principle and Designed for Reducing Coal, Ores, Etc., to a Pine Powder. can be shoveled without regard to the large auxiliary hopper. As the ground material passes out of the pulverizer it is caught in a sampling chute below, the first section of which rejects half of the material. The second section of the chute is placed at right angles to the first and rejects half of the material passing through the first one, four chutes in all being used, so that but one-sixteenth of the original material is delivered at the bottom. A protest against the proposed 20 per cent, duty on sprocket chains has been made to Congress by the chain manufacturers, more

Product details

  • Paperback
  • 189 x 246 x 35mm | 1,202g
  • United States
  • English
  • black & white illustrations
  • 1236824873
  • 9781236824875