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Patents: 341 of 511
UNITED STATES PATENT OFFICE.
OLIN H. BASQUIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE
LUXFER PRISM PATENTS COMPANY, OF SAME PLACE.

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Olin H. Basquin
15 of 28
ORNAMENTAL PRISMATIC GLASS.
SPECIFICATION forming part of Letter Patent No. 586,216, dated July 13, 1897.
Application filed March 8, 1897. Serial No. 626,385. (No model.)
To all whom it may concern:
    Be it known that I, OLIN H. BASQUIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ornamental Prismatic Glass of which the following is a specification.
    My invention relates to ornamental prismatic glass, and has for its object to produce effects, designs, ornamental figures, geometrical figures, designs, and the like by variations in the shape, relation, size, and quality of the prisms.
    The light received upon a window comes commonly from some general source or direction— that is, the mass of the light may be said to fall upon the window from some general direction, which is a comparatively small portion of the entire sphere. The prisms when arranged of uniform size and shape in the window obviously produce a comparatively uniform effect on the interior of the room. For example, a glass having prisms calculated to raise the light which comes from above upon the window, so as to lift it, as it were, from the floor and direct it back through the room along horizontal lines, will of course present, when viewed along those horizontal lines, a comparatively uniform surface of illumination. Now if such a body of glass be broken— as, for example, by a rib or vertical or diagonal strip of prisms of a different quality or arrangement, so that they tend to throw the light down instead of to raise it from the floor— it is evident that the figure or design formed by such prisms, which vary in quality from the prisms of the principal surface, will be revealed to the observer by dark lines or bands coincident with the changed prism; and, again, if we have in the body of the prismatic glass a design traced by glass of a different prismatic quality, so that such design will be bright when viewed from some position in the room, while the body of the glass is perhaps dark when viewed from the same position, it is evident that we will get another effect. In this manner the effects may be greatly varied and the light be distributed throughout the room, so that in some parts there will be brilliant light and in others obscure light. In one part a certain
design will appear and in another part another design will appear. In some respects the effect might be likened to the varying principle of changeable dress-goods. I have given in the drawings a few illustrations of the work which may thus be accomplished.
    Figure 1 is a view of a body of glass having a series of sections with prisms arranged as indicated. Fig. 2 is a view of a different design with the parts arranged in a somewhat different manner. Fig. 3 is a plan view of a window-piece, showing an architectural effect. Fig. 4 is a section on the line 4 4 of Fig. 1. Fig. 5 is a section on the line 5 5 of Fig. 3.
    A A are the prismatic sections, shown in Fig. 1 as rectangular and in Fig. 2 as irregular. These sections are formed in a body of glass together or in separate pieces subsequently united in any desired manner. They are properly inclined so as to give the desired prismatic effect for the body.
    B B are the ornamental pieces set in or formed in the body and having prismatically-arranged surfaces, but so as to give a different direction to the light passing therethrough from the direction given by the surrounding body portions.
    As previously suggested, these forms may be infinitely varied and the arrangements of the several prisms may be equally varied. The particular design, however, which is characteristic of the total structure must present a prismatic surface different from the prismatic surface of the body.
    In Fig. 3, C C represent the body of the window, which should be of prismatic glass in large sheets or small sections, as desired, but intended to raise the light and give an increased illumination to the interior of the room.
    D D are sections of prismatic glass arranged so as to throw the light in some particular direction, or, in other words, to be luminous when viewed from some particular direction.
    F is the lintel, and G the pedestal, which are also of prismatic quality differing from the body of the glass.