US1084742A - Process of producing embossed surfaces. - Google Patents

Description

W. L. JACOBS & A. D. BREWER.

PROCESS OF PRODUCING EMBOSSED SURFACES.

APPLICATION TILED APILZZ, 1912.

1,084,742. Patented Jan. 20, 1914.

1.1: ET-ME l III-3.11.... 5

51 we-whom UNITED STATES PATENT OFFICE WILLIAM LAMBERT JACOB S AND ALBERT DUDLEY BREWER, OF INDIANAPOLIS, INDIANA..

PROCESS OF PRODUCING EMBOSSED SURFACES.

Specification of Letters latcflt.

Patented Jan. 20, 191

Application filed April 22, 1912. Serial No. 692,457.

To all whom it may concern Be it known that we, WILLIAM LAMBERT James and ALBERT DUDLEY BREWER, citizens of the United States, residing at Indianapolis, in the county of-Marion and State of Indiana, have invented certain new and useful Improvements in Processes of Producing Embossed Surfaces; and we do 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.

This invention relates to improvements in embossed surfaces and process of producing them.

The object of the invention is to provide a simple and economical process for producing embossed surfaces without distorting or indenting the sheet or article upon which the surface is produced.

This improved process consists in printing, stamping or otherwise applying upon a sheet or other article the design or printed matter desired to be embossed thereon, by means of an ink or other substance which will retain for the time an adhesive or tacky condition.

In the accompanying drawings: Figure 1 represents a plan or face View of a sheet of paper or other suitable fabric having letters embossed thereon in accordance with this invention; Fig. 2 shows a longitudinal vertical section showing the design embossed thereon in adhesive ink greatly exaggerated in thickness; Fi 3 is a similar view showing the design a ter the powder has been dusted thereon and before the article has been subjected to heat; Fig. 4 is a similar view showing the article after it has been subjected to heat and in its completed form.

A suitable and effective vehicle for this purpose consists of an ink composed of four parts of tallow, one part of linseed oil and a pigment for obtaining the color effect desired. This ink is formed by melting and thoroughly mixing the above ingredients, and the compound so produced is then cooled and ground in the ordinary manner of producing printing inks, the resulting ink being very considerably heavier, that is, more solid than common printing ink.

When the design 1 shown in Fig. 2 has been produced in said ink on the article 2 to be embossed, the material for producing the raised effect is applied to said design, preferably by dusting it thereon in powdered form. This powder adheres to the portions of the sheet or article carrying the design, as shown at 3 in Fig. 3 and when subjected to heat melts and coalesces in conformity w th the design, forming on said design a raised mass 4 shown in Fig. l adhering to the article and having suflicient flexibility to permit ordinary use of the finished product, said material after coalescence hardening as the article cools.

The embossing material which is applied to the ink is preferably composed of two pounds of resin, two pounds of Burgundy pitch, one dram of collodion and one-half ounce of spermaceti. These ingredients are mixed with one gallon. of water and boiled until all the water is driven oil, when the ingredients will be found to be thoroughly commingled. After the compound so formed cools and hardens it is reduced to a powder of crystalline form, the spcrmaceti preventing the particles from uniting under ordinary atmospheric conditions. The ingredients may be proportioned to prevent them from melting at any predetermined temperature. The powder so formed is dusted over the sheet or other article and a number of grains thereof adhere to the design. The so treated article is then subjected to suilicient heat to cause the powder to melt and coalesce, and when melted it apparently swells and produces in exact conformity with the design a raised and embossed cfi'ect very like the embossing produced by steel dies but without in any way indenting or distorting the sheet or article which is embossed. This is especially desirable in embossing post cards on which writing is placed on the face opposite that containing the embossed design.

The coalesced material to which a suitable pigment may be added, firmly adheres to the sheet or other article and hardcns immediately u on cooling, thereby avoiding danger of 0 setting.

By this process embossed surfaces may be produced which cannot be distinguished from the more expensive steel die embossing unless the opposite face thereof be examined, and it can be much more cheaply carried out.

We claim as our invention:

A process of producing embossed sursign.

In testimony whereof we have hereunto 10 set our hands 1n presence of two subscribmg Witnesses.

1 WILLIAM LAMBERT JAooBs.

ALBERT DUDLEY BREWER.

Witnesses:

ELMER A. TURNER, CHAS, H. HOPKINS.

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