US349340A - Caryl coleman - Google Patents

Description

UNITED STATES PATENT OFFICE.

CARYL COLEMAN, OF NE\V YORK, N. Y., ASSIGNOR TO THE AMERICAN ENDOLITHIG COMPANY, OF SAME PLACE.

PROCESS OF PRODUCING DESIGNS, 81.0., UPON SURFACES.

SPECIFICATION forming part of Letters Patent No. 349,340, dated September 21, 1886.

Application filed January 11, 1886. Serial No. 188,272. (No specimens.)

To aZZ whom it may concern.-

Be it known that I, CARYL COLEMAN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in the Process of Producing Designs, 850., in Color Upon Surfaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in the production of shades, tints, characters, designs, &c., of a permanent character, in color, upon surfaces for the purpose of decorating the latter for ornamental uses. It is analogous in general character to the various processes for obtaining similar results described in the patents to George Hand Smith, but is distinguished therefrom by a different succession of steps and by greater convenience in practice and certainty in the effects produced, as will hereinafter more fully appear. a

In the treatment of marble surfaces (to which my invention is especially applicable) I proceed as follows: Having prepared the tracing pigments, which in color are preferably from dark brown to black, I apply them in a cold condition upon the marble surface. The mode of applying these tracing-colors is immaterial, and may be effected by stenciling, handpainting, or the like. The cold marble, bearing the outline thus traced upon it, is thereupon subjected to the action of heat until its temperature is raised to a degree ranging between 150 and 300 Fahrenheit. The tracecolors thereupon sink into the body of the marble gradually, penetrating to a depth dependent upon the quantity of color used. In heating the marble care must be taken to avoid excessive temperatures, experience teaching that the limit of 300 Fahrenheit should rarely, if ever, be passed, as beyond it the marble tends to disintegrate. Below such point the temperature should be chosen in accordance with the character of the work to be performed and the composition of the colors afterward to be applied in filling in the design.

The operator need not wait until the tracehot and in a liquid state) by the aid of a brush. While I have ascertained by experiment that in general the best results are attained by the employment of heated colors, I nevertheless contemplate in some instances applying the colors cold, as in the latter case also excellent results can be obtained, though at asomewhat greater expense of time.

In all cases the marble itself is kept heated during the application of the design-colors. This may be readily effected by means of wellknown expedients for that purposesuch as the water-bath, bain-maric, heated soapstone slab, and the like. v e

If the design or character to be painted is a small one or requires a comparatively brief period of time for completion, it will sometimes suffice to heat the marble slab in a separate oven and then return it at once to the operators bench, where it will maintain substantially its initial temperature for a considerable interval. In such case, to insure the best results, the colors requiring the highest temperature may be applied first and the others afterward in succession. As the hot or cold liquid colors are applied by the brush to the heated marble they sink rapidly below the surface in a vertical direction, forming uniform viens extending from the surface to the required depth of penetration, which may in some cases be several inches. During their penetration into the body of the marble the color-veins preserve very closely the configuration of the surface design, and do not spread perceptibly to the right or left. Consequently, subsequent polishing or even exten sive surface-wear of the marble will not destroy the integrity of the design. having been applied, the slab is allowed to cool, and is then polished. Either before or after the polishing operation it may be again heated and then retouched. This is often ad- The colors 4 vantageous, especially in fine work and where Y light and shade are required after the rougher .or characteristic parts of the design have been brought out.

My invention presents several notable advantages over what is disclosed in the prior state of the art. Thus it is difficult to make the colors adhere to a cold surface. Theheated marble surface, however, takes the colors read ily and quickly from the brush, thereby effecting not only a considerable economy in time, but also enabling the operator to pro duce finer work than heretofore. The marble being constantly before him, the operator can observe exactly the time when the desired surface effect or depth of penetration is secured, and need apply no more of the color than is sufficient for his purpose. The fact that the slab is constantly before the operator and that he can continually watch the development of the shades and fignres of the design renders the retouching operation of especial efficiency and value.

It is evident that the trace-colors, whose application has been described as preliminary to the main treatment, may be dispensed with in almost all cases, if desired, without serionsl y effecting the operation of bringing out the design. It is, however, desirable in general to use them as a guide to the operator, and also because they prevent absolutely the spreading of the colors beyond them.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. The process of producing shades, tints, characters, designs, &c., in color upon surfaces, which consists in heating the substance to be treated, and then, while it remains in the heated condition, applying colors to the surface until the desired degree of penetration is attained, substantially as described.

2. The process of producing shades, tints, characters, designs, &c., in color upon surfaces, which consists in heating the substance to be treated, and then, while it remains in the heated condition, applying hot colors to the surface until the desired degree of penetration is attained, substantially as described.

3. The process of producing characters, dcsigns, &c., in color upon surfaces, which consists in first tracing the outline of the repre sentation upon the surface of the substance treated, then subjecting said substance to the action of heat, and then, while it remains in the heated condition, applying the filling-in colors to the surface until the desired degree of penetration is attained, substantially as described.

4. The process of finishing or retouching shades, tints, characters, designs, &e., in color upon surfaces, either-before or after polishing, which consists in reheating the substance treated and applying the finishing colors to the original representation until the desired alteration is effected, substantially as de scribed.

In testimony whereof I affix my signature in presence of two witnesses.

GARYL COLEMAN.

Vi tnesses:

HERBERT H. D. Pamela, H. H. \VILLLSMSON.