One method of marbleizing glass consists in applying a mixture of varnish and oil to the surface of water of proper extent, and spraying or blowing upon the layer or film of oil and varnish dry colored powders to represent the mottled, speckled, veined, or other appearance of mottled or other stone. The glass is prepared by being coated upon one surface with varnish or japan, and is then placed upon the powder supported by the oily surfaced water, and the powder immediately adheres or fastens itself to the varnish or japan on the glass. The apparatus for distributing the color consists of a spraying device or distributor having a receptacle for the composition, which is introduced through a hole covered by a perforated cap. There is a diaphragm with holes or perforations, which are closed by a slide. This diaphragm separates the space containing the mixture from a passage or extension, the end of the casing of the passage being contracted sufficiently to fit upon the end of the bellows. To operate this device the receptacle is filled with the composition, the cap is secured in its place, and the slide lifted. The bellows are then operated, and the pressure of air drives the mixture in fine spray or drops upon the surface of the water.

The device for applying the dry colors to the floating sheet or drops of oil and varnish is similar to that described, but in order that a number of colors may be sprayed or blown upon the floating oil and varnish at the same time, the receptacle is divided at the end into two or more parts, and a shaft, having agitators, is extended through them. The air is forced by bellows or other suitable means through perforations in the diaphragm. Caps cover the various chambers, etc., and are perforated to permit of the escape of the powder. In operation the air from the bellows or other source enters the perforations in the plate, and, passing through the chambers, causes the agitators to lift the powder and agitate it, and at the same time the air pressure forces the powder through the perforations in the cap in fine streams of dust, and of course by moving the distributor, the dust may be distributed upon the floating oil or varnish as may be desired. It is obvious that the design of the marble, stone, or other article is produced upon the floating body of oil and varnish before it is applied to the glass, and it is also obvious that by coating the surface of the glass with varnish or other adhesive material of a like nature, upon placing the same with the surface having the varnish or adhesive material down, so that it shall be brought in contact with the coloring matter held by the floating surface or layer of oil and varnish, the coloring matter will immediately adhere to the japan or other adhesive coating, and will thereby become fastened to the glass, so that upon the removal of the glass the design laid out upon the floating layer of japan and oil is removed from the water, together with such of the floating oil and japan as unites therewith.

Of course the coloring or mottled or other appearance of any marble or other stone, or of any other material, may be reproduced upon the glass by this process, as it will only be necessary to change the dry colors to correspond to those of the stone or article to be imitated or copied.