United States Courts of Appeals Reports; Cases Adjudged in the United States Circuit Court of Appeals Volume 17

United States Courts of Appeals Reports; Cases Adjudged in the United States Circuit Court of Appeals Volume 17

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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. 1895 edition. Excerpt: ...across the same, as no time was lost in cooling and settling the metal and reheating the furnace, and an economy of labor was effected in lessening the number of workmen required for the melting operations. " The invention described in said letters patent No. 230,667 consisted in placing the regenerators at the sides of the tank and forming an open cave below the tank, communicating with air-spaces on each side thereof, for the purpose of cooling the bottom and sides and receiving such metal as might leak Statement of the Case. through in an open accessible space. Glass-melting tanks have hitherto been constructed under the belief that the fining operation of the material takes place mostly at the surface, and consequently such tanks have been made of considerable superficial area, but of very moderate depth, such as a foot or eighteen inches. In such tanks floating bridges or rings have been used, and these have been made shallow, so as only to exclude from the working-out spaces parted off by them foreign matters floating on the surface; also, boats or floating vessels for working out glass have been employed, as described in the specification of letters patent of the United States granted to Frederick Siemens on the 17th of April, 1877, No. 189,800, and reissued October 19, 1880, No. 9418; but those boats were so constructed that the glass was made to enter them at a high level, where it would be in an imperfectly fined condition, unless the tank were provided with bridges or other means of separating the crude from the fined material. It has been observed, however, that in the glass-melting process the metal, as it fines, sinks below the surface, and consequently, in order to work out the metal to the best advantage, the depth...show more

Product details

  • Paperback | 228 pages
  • 189 x 246 x 12mm | 413g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236855892
  • 9781236855893