DE1644C - Process for the production of colored pictures and reliefs on glass, metal, porcelain, stone and wood by means of the sandblower using a top color consisting of firnifs with the addition of siccative and oil varnish - Google Patents

Description

1877.

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Class 32. '

LOUIS WESTPHAL in WESTPHAL and GANTER in BERLIN.

Process for the production of pictures and reliefs on glass, metal, porcelain, stone and wood by means of the sandblower using a covering paint consisting of firnifs with the addition of Siccativ ^: - ""'" and oil varnish.

Patented in the German Empire on November 27, 1877.

The purpose of the process is to use medium on white or colored glasses (hollow and sheet glass) slightly liquid paint, which is applied with a pen, brush, stencil or by printing processes will, ornaments, figures, as well as all drawings, writings etc. through Sandblower in one or more tones, as well as to be applied in relief.

The same procedure is also used for engravings on metals, porcelain, types of stone, wooden, and other objects.

If the object to be processed is transparent, clear glass, the drawing will be simply placed under the glass, the contours, shadow tones, etc. are conveyed New color to be described below is applied, either with the aid of a brush or a pen, or also by stencils in a putty-like state with a spatula.

On colored glasses, as well as on opaque objects, stones, baked clays, metals, Porcelain, wood, etc., the drawing is either sketched freehand or conveyed Tracing paper traced through, and in such a way that one is a paper soaked with oil of a different color from the object to be worked between these and the drawing lays out and retraces the contours etc. with a sharp burin made of horn or bone, like this that they show themselves on the object.

The contours, shadow tones, etc. are then combined with the one composed by the inventor Color in the required strength more or less covered with the addition of Siccativ, depending on the areas not covered with paint are ground in more or less deeply should.

The object thus prepared is, after the paint has dried sufficiently, in the sandblasting machine and the whole surface to be processed to the sandblasting exposed.

■ The deeper the areas not covered by the paint are to be ground in, resp. ever the more the colored ones are to remain elevated, the more frequently the object in question must be attacked by the sandblast; the same becomes thereupon from the one adhering to it Color freed and the outlines that have been covered with color, etc., are raised and blank, while the areas not covered with color are recessed and sanded matt.

In the case of colored overlay glasses, where different shade tones are to be created, If the disc is coated with paint several times and sanded over, so does the first one Applying and sanding the first tone is created with the second application and the following Grinding the second and so on. Repeating this operation more often makes it possible finally, also to create bas-relief.

Instead of using a brush and pen, the drawing can also be done using any printing process either directly or indirectly by means of a specially prepared transfer paper in Apply paint to the object to be processed.

With the above procedure you are also able to make woodcuts etc. on the one described To be able to make paths.

The paint used for application consists of firnifs with the addition of a little siccative and any oil varnish; to this mixture any color is added at will, which is rub with the composition.

The addition of siccative and oil varnish is not subject to any specific percentage ratio and its only purpose is to make the paint drier or tougher, whichever is stronger or weaker sandblasting or the more or less deep grinding of the objects requires; also the admixture of Siccativ depends entirely on the temperature and the Moisture content of the work area in which the objects dry.

This new process has the advantage over the usual stencil processes that the greatest limits are left to artistic execution and one is not the production of the stencils, which are often difficult to implement, which is associated with special costs is bound.

The photographic process with the aid of gelatine, etc. can only be used for flat glass panels and in limited dimensions and is at all only suitable for mass production, while the method described above also is applicable to hollow glass, uneven surfaces of all kinds.

Claims (1)

Patent Claims: ι. The use of a paint prepared as explained above for manufacture from grinding shops on glass of any kind and shape, engravings on metal, porcelain, Types of stone, wood, etc. using the sandblowing method. The creation of different shades of color on overlay glasses mediates the described color. The creation of a bas-relief by repeated repetition of the application described Color and then sanding as described.