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Louis Lefranc
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Curing Cements, Concrete, And Artificial Stone
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Abstract
9769. Lefranc, L. April 28. Cements; stone, artificial.-Relates to the manufacture of artificial marble, granite, and the like from a fused mixture of calcium fluoride and calcium sulphate or chalk. Silica or clay up to 25 per cent. of the whole may be added. Good results are obtained from a mixture of calcium fluoride, plaster of Paris, chalk, clay, and sand, with or without a small quantity of ferric or other oxide, and magnesia or any other alkaline or earthy base.
GB190409769D1904-04-281904-04-28Improvements in the Manufacture of Artificial Stone in Imitation of Marble or Granite and the like.
ExpiredGB190409769A
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