"The Iron Founder" Supplement; A Complete Illustrated Exposition of the Art of Casting in Iron. Also, the Founding of Statues the Art of Taking Casts, Pattern Modelling Useful Formulas and Tables

"The Iron Founder" Supplement; A Complete Illustrated Exposition of the Art of Casting in Iron. Also, the Founding of Statues the Art of Taking Casts, Pattern Modelling Useful Formulas and Tables

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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. 1893 edition. Excerpt: ...force to round ones, and risks should not be taken. Sometime it is found advisable to change the location of the runner; if this must be done, choose some flange or collar into which the gates can be directed, either on the side, as seen at C, or dropped down as at D. Fig. 108 shows how to run a large wheel through the hub core. The centre dry-sand core, with a hole large enough to fill the mould at a proper rate, rests on another dry-sand core in which the requisite gates have been prepared. To save making the bottom core, holes for gates may be made at A, indicated by broken lines; but this plan is somewhat risky if the noses against which the iron beats are not made in dry sand, as seen at B. It is plain that a wheel filled after this manner is preferable to any other, as it makes what is otherwise a critical job a very safe one, and insures a good casting every time, at least so far as the running is concerned. Fig. 110 is a plan and elevation of a spiral drum, or at least as much of it as will serve the purpose of showing how to arrange for a system of bottom gates, when such gates must be made in the pit around a brick mould. Where the pits are damp, it is absolutely necessary to have the gates protected from the moisture. The method shown needs no explanation other than can be discovered by a careful examination of the figure. AA are the gates prepared in the mould, against which are set cores BB, these again being surmounted by other cores, as seen, until the top is reached. If the mould is unusually long, and there is danger of the metal becoming too slug B gish to fill the upper parts of the mould correctly, then apply the gates on the top, after the manner as fully explained in " The Iron Founder," page 163. The utility of...show more

Product details

  • Paperback | 86 pages
  • 189 x 246 x 5mm | 168g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236514459
  • 9781236514455