GB134230A - - Google Patents

Abstract

134,230. Fried, A. Nov. 19, 1915, [Convention date]. Stone, artificial; concretes; compositions containing oils, resins, etc; stone, colouring; stone, hardening.-An aggregate for making artificial stone is made from fine waste materials such as slag, infusorial earth, earths, ground stone, sand, ashes, fibres, sawdust, and a binding-material, such as lime, cement, gypsum, glue, oil, resin and lyes from paper or soap making or from the extraction of dyewoods, and is formed into particles of any desired shape or size. The particles, before drying or after being dried and coated with a binding-material, are placed loosely together in layers so as to form blocks or stones, having a cellular structure and containing air cavities. Spherical forms produce the maximum volume of cells. Colours may be added. Pieces of aggregate of different colours may be employed to obtain a variegated product. The outer cavities may be filled with substances to vary the colour, surface hardness, &c. The aggregate pieces may be produced by shaking, by extrusion or other presses, by two grooved plates working at any angle to one another, by knives &c., or the material may be passed through a vibrating sieve in the form of grains. The Specification as open to inspection under Sect. 91 (3) (a) states also that the cells may be filled with coloured or other substances. Pieces of aggregate which do not bind well may be treated with gypsum, cement, water-glass and the like to make them firmer or to increase their speed of drying, or hot air, steam, or gas may be employed for this purpose. The aggregate pieces of the finished product may be heated to any desired degree and may even be melted or " coagulated." The cellular nature may be increased by the use of materials which are gasified at a high temperature. Ores may be treated in the manner described prior to their further treatment, in which case the additional materials for the further treatment may be employed as binding agents for the aggregate pieces. The particles formed by passage through a vibrating sieve may thence be fed to a. conveyer which may be in the form of a swinging shoot on which the pieces roll and are made to assume a more or less spherical form, or if a vertically vibrating conveyer band be used the pieces are flattened. The pieces may be roughened bv the use of roughened shoots which are oscillated, jerked, or otherwise moved. Fig. 3 (Canceled) shows in cross-section a shaking-device in which the aggregate are made to assume a round or granular form. The materials are placed upon a sieve-like surface 1 fixed in a frame 2 which is suspended or otherwise supported and is oscillated by a crank 5 and is shaken by contact with buffers 4. This subject-matter does not appear in the Specification as accepted.