Official Gazette of the United States Patent Office Volume 160

Official Gazette of the United States Patent Office Volume 160

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Description

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. 1910 edition. Excerpt: ... said chimney comprising a cylinder having curved tubes 23 therein through which air to be heated is adapted to pass, in combination with a fore-hearth; a furnace adapted to pre-heat reagents; and a connection between said pre-heating furnace and said principal furnace adapted to conduct hot gases from the latter to the former, substantially as described. 3. A furnace for the production of iron and steel comprising a principal furnace, a shaft or chimney above said principal furnace, and a regenerator in said chimney, provided with means for drawing combustible gases from said principal furnace below its charging mouth, said means adapted to deliver said gases to said chimney above the feed doors of said furnace, in combination with a forehearth, a furnace adapted to pre-heat reagents; and a connection between said pre-heating furnace and said principal furnace adapted to conduct hot gases from the latter to the former, substantially as described. 4. A furnace for the production of iron and steel comprising a principal furnace, a shaft or chimney above said principal furnace, and a regenerator in said chimney, in combination with a fore-hearth, a furnace adapted to preheat reagents; means for conducting a portion of the hot gases from the fusion zone of the principal furnace to the pre-heating furnace; and means for discharging said hot gases from the pre-heating furnace into the chimney, whereby the pressure in the fusion zone is reduced and the heat of the evolved gases is utilized, substantially as described. 1. A dredging machine conduit comprising a pontoon supported section consisting of pipes and a ball and socket joint connecting the adjacent ends of the pipes together, the outer end of one pipe being tapered and the outer end of...show more

Product details

  • Paperback
  • 189 x 246 x 55mm | 1,941g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236874110
  • 9781236874115