Foundry Volume 21

Foundry Volume 21

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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. 1902 edition. Excerpt: ... putting on another coat. After two or three coats have been added the color is usually deep enough. After the proper tint has been produced, dry and lacquer. Brass will take this color, but the result is not as deep and rich as that produced on copper. G. E. Pickup. to try to demon strate to the foundrymen of Europe, the great advantages to be gained by the adoption of American labor saving appliances in their shops, particularly in the use of hand molding machines and presses. Being only interested in the best methods of producing light castings, it was largely to this class of foundry work that I paid particular attention. I propose in this article to mostly confine myself to my experiences while in Great Britain, as a few months spent in traveling throughout Germany, France and Belgium do not permit one to quote with authority or fairness the conditions prevailing in those countries. It may at once be said that although up-to-date foundries are not uncommon in Great Britain, still the majority of shops producing light castings, are by no means using advanced methods. One very often finds shops using small iron flasks not more than S inches x 12 inches in size, the molder working ungated patterns and being compelled to draw each of these separately, even when such castings are being made in considerable quantities. in each mold increased, the gain in production from this source amounting to between 20 and 65 per cent. In some of these shops where molders formerly received 2 shillings or 48 cents for molding 100 pounds of castings, the introduction of the molding machines has reduced this price to 1 shilling and 6 pence, equivalent to 36 cents for the same amount of castings, and yet the moldcr is at the same time earning about 25 per...
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Product details

  • Paperback | 164 pages
  • 189 x 246 x 9mm | 304g
  • United States
  • English
  • black & white illustrations
  • 1236977289
  • 9781236977281