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586,261 · Winslow · "Prismatic Plate and Frame for Same" · Page 2
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resulting in the formation of a mass at this point which will hold the parts together without projecting on either side of the surface of the body of the prism-lights. I have shown indentations F, but of course projections could be employed. The main point is that this mass of material or solder secures a hold on the prism-lights between the two opposite surfaces of each of such lights.
    In Fig. 2 I have shown the mass of solder as not even covering the outer edges of the members of the grid, while in Fig. 3 I have shown this mass as covering such outer edges and extending over onto the surfaces of the prism-light bodies. In some eases of course there would be some solder on the surfaces of the grid members, but in most cases this would be very slight.
    I claim—
    1. A prism-plate comprising a series of prism-lights having corners each cut off and indented at the corners and a grid or frame with a mass of material at each corner, said material binding the portions of the grid together and projecting into the indentations of the prism-lights to hold them in position.
    2. A prism-plate comprising a series of prism-lights, having corners, a net-like frame in the meshes of which the prism-lights lie, said prism-lights reduced and indented at the corners, a mass of solder about the corners of
the lights and meshes and filling the space between the same and lying in the indentations of the lights.
    3. A prism-plate comprising a series of prism-lights, a net-like frame in the meshes of which the prism-lights lie, said prism-lights reduced and indented at the corners of such meshes, a mass of solder about the corners of the meshes and filling the space between the same and the lights and in the indentations, and a mass of electrically-deposited metal between the sections of the net and the edges of the prism-lights and over the surface of such solder.
    4. A prism-plate comprising a series of prism-lights, and a frame, and a surrounding outwardly-bent channel-bar edge, and a wood-filling frame adapted to be received within the channel-bar and thus to complete the plate.
    5. A prism-plate comprising a series of prism-lights and a series of frame-pieces, said prisms reduced at the junction of the frame-pieces, and indented and deposited metal about the junction of the frame-pieces, and in such indentations so as to hold the parts together.
WILLIAM H. WINSLOW.
Witnesses:
    DONALD M. CARTER,
    BERTHA C. SIMS.