US543889A

US543889A - Method of decorating glass plates

Info

Publication number: US543889A
Authority: US
Publication date: 1895-08-06
Anticipated expiration: 1912-08-06

Description

(No Model.)

S. PAINI.

METHOD OF DECORATING GLASS PLATES. No. 543,889. Patented Aug. 6, 1895.

UNITED STATES PATENT OFFICE.

SILVIO 'PAINI, OF ST. LOUIS, MISSOURI.-

METHOD OF DECORATING GLASS PLATES.

SPECIFICATION forming part of Letters Patent No. 543,889, dated August 6, 1895.

Applicationfiled February 11, 1895. vSerial No. 537,965. (No specimens.)

.To all whom it may concern.-

Be it known that I, SILVIO PAINI, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Methods of Decorating Glass Plates, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to the method of decorating glass plates; and it consists in the novel features of construction hereinafter described and claimed.

In the drawings, Figure l is a plan view of a stencil such as I employ in carrying out my invention. Fig. 2 is a plan view of said stencil applied to a plate that is to be decorated. Fig. 3 is a longitudinal sectional View of a section of glass plate, the same having a stencil-plate located thereon, and showing the design in'said plate filled with a compound- Fig. 4. is a view in perspectiveshowing the stencil as it is being removed from the plate, and the compound I use in filling in said stencil in position upon said plate. Fig. 5 is a longitudinal sectional view of a plate, the same having the compound in position thereon and before the same is subjected to the etching or cutting-out process. Fig. 6 is a longitudinal sectional view of the glass plate, the same having been stenciled by myimproved method and means and after A the same has been subjected to or acted upon by a suitable acid. Fig. 7 is a longitudinal sectional view of a glass plate, the same having'been prepared by my improved means and method and after the Same has been subjected to the process commonly known as thesand-blast. Fig. 8 is alongitudinal sectional View of a glass plate, the same having been stenciled by my improved method and means and a coating or layer of chipping compound applied to the surface of said plate. Fig. 9 is a longitudinal sectional view of the plate seen in Fig. 8, but with a second stencil located upon the chipping compound and coinciding with the stencil that is located directly upon the face of the glass plate. Fig. 10 is a longitudinal sectional view of a glass plate such as seen in Figs. 8 and 9, the same having been stenciled by my improved means and method and subjected to the chipping process.

Similar numerals refer to similar parts throughout the several views.

1 indicates the section or plate of glass, which maybe properly termed the work in the succeeding description. When it is desired to decorate a piece of work by subjecting the same to the action of acid, the sandblast process, or by chipping, the letter, figure, or design, such as 2, that it is desired shall appear in relief upon the plate or work 1, is stenciled or cut from a thin metallic or paper sheet 3, and said stencil so formed is located as desired upon the work.

When decorating or etching by the action of acid after the stencil is formed, I prepare a compound in approximately the following proportions: one part beeswax, one part vaseline, one part stearine, and two parts asphaltum. These are dissolved by heating and ground and mixed in an ordinary grindingmachine and when thoroughly mixed and commingled and ready for use should be of the consistency of ordinary butter. With a palette-knife, or any suitable means, I now apply the so-formed compound directly to the stencil, which is located upon the work at the proper point, and thoroughly fill all the stenciled or cut-out portions of the design, thereby locating said compound directly upon the work. This being done the stencil-plate 3 is carefully removed from the work and the design of said stencil is thus formed by the compound in relief upon the work. After the compound has been allowed to dry a certain length of time the plate is ready for the bath, or to be subjected to the action of hydrofluoric acid. The acid will act upon the entire surface of the work not covered or protected by the compound, and therefore when the plate has been removed from the bath or acid and the compound washed from the surface of the work with ordinary kerosene and water the design will appear upon the surface of said work in relief, and thus the desired result is obtained.

When the work is subjected to the sand-blast process the desired design is stenciled or cut in the plate in the manner previously described and located directly upon the work; but the compound that is applied to said work through the stencil consists of the following ingredients in proper proportions:

ICO

common glue dissolved or liquefied by hot water, one part; whiting, one part; glycerine, one part. These ingredients are thoroughly mixed and'commingled and ground in an ordinary grinding-machine and when ready to be applied to the stencil are of the consistency of ordinary butter. Vith a palette-knife, or any suitable means, this compound so formed is applied to the work, as previously described, and the stencil removed. After the compound upon the work has dried a sufficient length of time the work is placed in the sandblast apparatus and the entire exposed surface of the work or that not covered and protected by the compound will be cut and removed by said process, and when the compound is washed from the work with water the design appears upon said work in relief.

The glycerine in this compound tends to keep said compound in a plastic state, acts as a preservative for the same, and does not allow said compound to chip away from the work when the compound has been dried and said work is being acted upon by the sand-blast process.

hen it is desired to ornament the work by the chipping process, the stencil is applied to the work and the compound of glue, whiting, and glycerine, as previously described, is applied and the stencil-plate removed. The chipping compound (indicated by the numeral 4 in Figs. 8 and 9) is now placed upon the entire surface of the work and the specially-formed compound that was previously stenciled upon said work. While the chipping compound is yet soft and plastic, the stencil is again applied to the work in such a manner as that the design formed in said stencil will coincide with the previouslystenciled design upon said work. The compound of glue, whiting, and glycerine is now applied to the stencil and necessarily is located directly upon the chipping compound, that in turn is located upon the compound first stenciled upon the work.

Upon the removal of the stencil-plate 3 the two coinciding stenciled designs will be left upon the work, between which is a coating or layer of the chipping compound, and the entire surface of the glass not covered and protected by the first design is covered and adapted to be acted upon by the chipping compound. By thus locating my compound upon each side of the chipping compound said chipping compound is preserved in a soft and plastic condition and not allowed to contact with the surface of the work where the design has been stenciled thereon. Hence, when said chipping compound has acted upon the surface of the glass, and together with my protecting compound is washed therefrom, the surface of the work protected by the stenciled design appears intact and in relief, the edges of said design appearing very sharp and clear cut.

The method of coincidingly stenciling the the designs upon the work and the manner in which the chipping compound is applied to said work may be more clearly understood by referring to Figs. 8 and 9, the work finished by this process appearing as clearly shown in Fig. 10.

My compounds are very easily, cheaply, and expeditiously formed and, being plastic, are capable of being very easily work ed'and stenciled upon the surface of the work.

hen said compounds are dried upon the work, they very efficiently preserve the surface of the work upon which they are located and allow very clear sharp edges or lines to be formed on the surface of said work by the acid, sand-blast, and chipping processes.

By the use of a stencil in locating the designs upon the work much time and labor are saved in preparing the work for the various processes, and a great number of pieces of work may be prepared in a comparatively short length of time.

What I claim is- The herein described process of ornamenting glass or analogous plates, which consists in stenciling the desired design upon the work with a compound of glue, whiting and glycerine in the proper proportions, then 10- cating upon the surface ofsaid work and stenciled design a suitable chipping compound, then re-stenciling upon the chipping compound the design so as to coincide with the first stenciled design, then allowing said chipping compouud to act in the usual manner, and finally washing said chippingcompound and stenciled designs from the surface of the work.

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

SILVIO PAINI. \Vitnesses E. E. LONGAN, JOHN C. HIGDON.