Art of ornamenting glass
US 315472 A
Description (OCR text may contain errors)
. E. L. BROWN.
y ART 0F ORNAMENTING GLASS. No-l 315,472. Patented Ap. 14, 1885.`
IlIllllllHllIlIllllIllll|IllllllllllIllllllllllllllllll l' 111111 llllilllll IIIIIIIIII l|lllllllllllmllmgl||IlIlIIIIIllmnmnlllnm IIIIIIIIIIIIl 1111111 `IIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIH one side of the glass.
UNITED STATES EDWIN LEE BROWN, CHICAGO, ILLINOIS.
ART OF ORNAMENTING GLASS.
` sPECIPlena-10N` forming part pf Letters Patent 10.315,472, dats Apri; 14, 1885.
Application filed Oetober 20, i (Model.) t u 4 l drawings, in which- Figure lshows a positive treatment of an ornamental design, the' figures beingpformed.V upon the face of the glass.` Fig'. 2 shows a negative77 effect by abrading thefgroundwork upon the back of theV glass and leaving the face in its normal condition. Fig. 3 shows in the main ligure a positive treatment upon the face and a negative treatment .uponthe back, while the dots at the ends and the in-` ner border surrounding the same are positive upon both sides. v
Like letters of reference indicate like parts vin the different gures.
My invention has reference to the art of ornamenting glass by etching or grinding the surface thereof in any well-known manner, whereby said surface is abraded Vor rendered semi-opaque; but is especially applicable'in the use of the sand-blast process,by which the more delicate and perfect effects are obtained. In this line of glass ornamentationresults have heretofore been accomplished by either a positive or negative treatment of the design upon i This not only produces a less artistic effect, but leaves a portion of the glass transparent, which is often obj ectionable in case the same, is intended tobe used as a screen. On the other hand, the design may be positive and the entire opposite surface of the glass may be ground; but while this may serve as a perfect screen, it is limited in its artistic effects, being devoid of the marked contrasts produced by deep shadows.
The object of my invention is primarily to produce an ornamental glass, which, while it may serve as aperfect screen, may at the same time present a series of lights and shades of variable forms, proportions, and intensity, according to the position of the observer. 'A secondary object is to secure the appearance of depthin the design, which may or may not be accompanied with the more intense shadelines, according as said design is produced t l y j `'uponthe respective sides ofthe glass. I ac- Beit known 4hat I, EDWIN LEEIBnowN, of i Chicago, in the county of iCook and ,Statelof Illinois, have invented' certain new and useful` Improvements in the Art of Y Ornamentingi Glass, of which the following'is a description, l reference being had to the accompanying;
complish said obj ect preferably byflirst forming said design positively upon the' face of the glass, and then submitting thelback of said 55.,"
portions, vaccording to the Aeffect which is de t lsired to be produced,all of rwhichlwill .be hereinafter more fully' desc`ribed,`fanddefinitely 65"` `In the drawings, Arepresentsthefmain dei sign, while B `BJ ris 'a'fmo'diflcation thereof.
Fig. l shows said design, ABBQtreated posif tively upon the face of the glass.' f 70 Fig. 2 indicates the partsA and Bas nega-\ tively formed by submitting the groundwork VC upon the back of the glass to the sand-blast process, `while B in `the same figure is .formed by a positive treatment of saiddesign upon the back of the glass, both of said results being produced in the usual well-known manner. which the glass is left in its normal condition. i
l Fig. 3 illustrates a design as completed by 80,;
my improved processlof ornamentation.
I first submit the partsA, B, andBupon the face of the glass, as'shown in Fig. `l, to` ythe sandlblast, the part CV being protected by y y' a coating of wax,` paraffine, or other suitable 85` material. The parts C, B, and B are then submitted to a like treatment upon the back ofthe glass, it being important, in orderto produce the more marked and pleasing effects,
that the lines of one shouldcoincide with 9o l those of the other-that is to say, the positive y design A should be placed directly over that of the negative upon the opposite side, while B B should fit or fall directly over the correspending figures whichare positively formed upon the other side. The result is that the parts B B are much whiter than the ground G, and have the appearance of extending through the glass, while, owing to the thick ness of said glass, the angle of incidence from rco which the gure A is viewed enables the observer to see a portion of the glass in its nor- A', Figs. I and s, shows a border in mal condition, said portion varying in extent and configuration according to the position of the eye of the observer, thus forming what appear to be dark shade-lines or shadows a, while at the same time theline of vision,which strikes upon the outline of the ground portion C of the back,inc1udes or passes through aportion of the opposite side of the figure A, leaving the impression of a series of white lights or tints,b, in direct contrast to the lines or shadows a. When the figure is small or narrow, as in the stem of a iiower, vine, or other similar design, it may, owing to the angle of incidence from which it is viewed, be thrown entirely upon or over the background C, thus causing all that portion of the gure to appear white, as shown at c, lig.V 3, with the dark shadows a contrasted therewith; hence not only constantly-varying effects may be produced in the wayjof lights and shades, according to the position of the observer, but the appearance of depth may be given to a portion of the design, while other parts may appear as being raised and others slinken.
The design shown is one of the simplest forms; but I am enabled by modifying the combinations there indicated to obtain all the varied and beautiful effects of diaper, basket, lace, or frost work, according to the skill of the designer.
WhileI prefer in most cases that the outlines of the design upon the respective sides of the glass may coincide with each other, yet I do not conne myself to this arrangement, as I am enabled by varying therefrom to produce the appearance of rounded, hollow, or irregular surfaces.
Having thus described my invention, what I claim, and desire to secure by Letters Patent is- 1. Ihe art of ornamenting glass consisting of, first, forming by sand-blast or analogous process the positive design upon the face, and, secondly, the negative design upon the back, substantially as and for the purposes specified.
2. The art of ornamenting glass by sandblast or analogous process consisting of forming the design both upon the front and back of the glass, the outlines of the two coinciding with each other, substantially in t-he manner and for the purposes set forth.
3. The art of ornamenting glass by sandblast or analogous process by producing the positive design upon the front and the negative upon the back, whereby the outlines of 55 the two may coincide when viewed directly from the front, substantially as described.
4. As a new article of manufacture, an ornamental glass the design upon which isformed upon one side of the glass by sand-blast or equivalent process, and its counterpart or negative upon the opposite side, substantially as described.
EDWIN IEE BROWN.
D. H. FLETCHER, M. M. GRIDLEY.