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1,025,338. Patented May 7, 1912

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1,025,338. Patented May 7, 1912 D. W. TROY, METHOD AND APPARATUS FOR THEATRICAL PURPOSES, 1,025,338. APPLIOATION FILED JAN. 14, 1911, Patented May 7, 1912. 2 SHEETS-SHEET 1. Ul It LEEEEas IJLUE.I LEDI D. W. TROY, METHOD AND APPABATUS FOR THEATRICAL PURPOSES, 1,025,338. APPLIOATION FILED JAN. 14, 1911. Patented May 7, 1912. 2 SEEETS-SBEET 2. f WITNESSES: INVENTOR UNITED STATES PATENT O , . DANIEL w, TROY, OF MONTGOMERY, ALABAMA, METHOD AND APPARATUS FOR.THEATRICAL PURPOSEs. 1,025,338. Specification of Letters Fatent. Patented May 7, 1912. R Application filed January 14, 1911, serial No. 602,675. To all whom it may concern: varnish or the like. Efficient results can be Be it known that I, DANIEL W. Troy, a had by employing uranium glass in the form citizen of the United States, and a resident of beads, spangles, and other ornaments, and of the city and county of Montgomery, State attached as by sewing to fabrics, etc. While 80. of Alabama, have invented certain new and there exist a considerable number of avail useful Improvements in Methods and Ap able fluorescent materials I prefer to employ. paratus for Theatrical Purposes, of which one of the hydrocarbons such as fluorescein this is a specification, reference being had or uranin for treating fabric, owing to its to the drawings forming parthereof. simplicity of application and cheapness, and 65 0 The invention relates to theatrical and to use uranium glass for spangles or orna like effects produced by the light of fluor ments, although the uranium sulfate in its - escence, and its objects are to provide novel ordinary commercial form is quite as bril. and efficient methods and apparatus for the liantly fluorescent and there are many other production of such effects. materials obtainable in the form of crystals 70 5 In the drawing Figure 1 shows a general or powders, among them calcium tungstate, application of the invention, Figs, 2 to 7, inclusive show details of the application of glass.Sich are, perhaps, as desirable as uranium fluorescent material, Fig. 8 illustrates the In Fig. 1, the source of illumination, is method and apparatus for exciting fluor shown as a spotlight” projector, or are 20 escent materialso as to be visible through non-fluorescent material, and Fig. 9 shows a brokenlamp 1, away provided in the with figure) a reflector. and normally SER modified use of fluorescent material. screened by such a medium as deeply colored. In general the invention is carried into cobalt glass or other material substantially effect by providing theatrical costumes, transparent to ultra-violet light but substan 80 25 scenery, stage effects, and the like, composed tially opaque to ordinary light. A deeply wholly or in part of fluorescent material, colored cobalt. glass is effective in practice and then exciting such material by a source. but a combination of cobalt glass and some of substantially ultra-violet light, such as other material can be employed to advan an arc lamp screened by dark blue or violet tage if the light transmitted is desired more 85 30 cobalt glass or an equivalent medium Sub completely ultra-violet, in character. In the stantially opaque to visible light but sub figure such a screen is shown at 2 as a hinged stantially transparent to ultra-violet light. front or cover to the projector. The source The invention is further carried into effect or sources of ultra-violet excitation may be by intermittently illuminating the costumes, disposed as in a balcony or gallery 3, or else 90 35 etc., by ordinary and by substantially ultra where. At 4 is a performer, standing.on a violetlight; and also by illuminating fluor stage 5, 6 and 6 being parts of scenery, and escent material, on the persons or costumes 7 a “back drop.” Obviously, the fluorescent of performers, for example, covered by semi material may be applied to any or all of the transparent or translucent non-fluorescent objects illuminated by the projector, or pro 95 40 material such as lace, gauze, or other more jectors employed. As an example of the or less open work textile fabric, thus ob practical operation of the invention, the taining a striking and novel effect of a clothing of the performer, may be assumed. luminous body visible through a partly to be treated as described. An illumination opaque covering. with the unscreened projector discloses noth 100 45 In applying the fluorescent material I ing unusual. As soon, however, as the ordi may treat fabrics by immersion in a fluor nary illumination is discontinued and the escent solution, such as that of fluorescein, or fluorescent material illuminated by substan of uranin, or of other substances of like tially ultra-violet light, which is done by qualities. When dried such fabrics are bril interposing the screen 2 in front of the arc 05 50 liantly luminous under strong ultra-violet light, the clothing becomes brilliantly visible light excitation. I may, if desirable, other against a practically dark background, par wise incorporate in the fabric fluorescent ma ticularly if the sole illumination of the stage terial. I may apply to fabrics, scenery, stage is that afforded by the projector. It should effects and the like, fluorescent material in be understood, however, that the fluores, 110 55 the form of powder, or in granules, or crys cence, especially under strong ultra-violet tals, employing, a binder, such as size, glue, excitation, is sufficiently brilliant to afford N 1,025,338 more than passable effects even if the stage such a material as uranium glass or uranium is at the same time illuminated by incan sulfate, if the arc employed is approximately descent lamps, although the fluorescent ma E. in candlepower to that usually em terial is, of course, more effective when it ployed in moving picture apparatus, and the constitutes practically the sole source of fluorescent light is quite brilliant enough to 70 stage illumination. This is especially true plainly show through the non-fluorescent of the less brilliantly fluorescent materials covering. many of which are very inexpensive and It will be understood that a performer, or give of fluorescent light of great beauty a plurality of performers, attired as de though less strongly than such substances as scribed, may be first exhibited under the 75 10 uranium glass, calcium tungstate, etc. normal illumination, when the fluorescent Fig. 2 shows a surface coating, 8, as ap phenomena will not be apparent, and then plied with a binder to a sheet of fabric or exhibited under the substantially ultra violet other material, 8, where the fluorescent sub excitation; or the different illuminations can stance is powdered or granular as described. be alternated at will. The effects which may 80 5 Fig. 3 shows a button or spangle 13, of be had are sufficiently obvious. uranium glass or other suitable fluorescent In Fig. 9 I have shown a detail of the ap material, attached by sewing at 13 to a plication of fluorescent material in the rep fabric 12. resentation of a fire-fly, 19, which may be Fig. 4 shows a modified spangle at 11, pro formed of uranium glass (or any other suit 85 20 vided with an eye 11 for attachment to able substance) and attached to the clothing fabric or other material. of performers, or exhibited as flying through Fig. 5 shows a detail of a net work, or the air-(in such case s by a non beadwork, fluorescent beads, 9, 9, etc., being fluorescent support) or otherwise. 25 shown strung on cords or threads 10,10. It will be understood that while the de 90 Fig. 6 shows a plurality of spangles, 11, scription has been principally directed to the treatment of costumes the invention is 11, etc., attached to a fabric 12. equally applicable to practically all stage tivelyFig. long 7 shows beads a or detail cylinders, of a fringe9,9, attachedof rela paraphernalia. It will also be understood 30 to cords 10, 10. that the invention is not limited in appli 95 Warious other methods of attachment of cation to objects displayed on a stage, since fluorescent material are entirely obvious and it may be employed in connection with out need no description. r, door representations such as parades, pag In Fig. 8 the application of the invention eants, and the like. to the illumination of fluorescent material Obviously the invention can be carried 100 35 into effect with other sources of ultra-violet ispartly illustrated screened generally. by non-fluorescent On a stage materialor plat light than those described; among these, the form 14, is a performer 15, having a portion various “uviol' lamps recently employed in of her fluorescent costume, 16, covered by producing substantially ultra-violet light for 40 some such translucent material as the gauze germicidal purposes; but for ordinary the 05 or lace skirt and sleeves, 17, 17, 17. One atrical purposes I prefer to employ the or spot-light projector is shown at 18, screened dinary arc lamps generally used and screen by a readily removable light-filter such as them with cobalt glass or some other suit described with reference to Fig. 1. Beneath able medium. 45 the stage may be another source of illumi It is to be noted that while the invention 10 nation, such as the projector 18, and a mirror employs the ultra-violet light as the excit for directing the light upward through the ing agent an illumination or excitation sub stage (which in this case must be provided stantially, ultra-violet is quite efficient and is either with a glass covered opening such as very easily had.
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