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405,778 · Jackson · "Frame for Illuminating-Tiles" · Page 1
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Patents: 226 of 511

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Peter H. Jackson
12 of 14

SPECIFICATION forming part of Letters Patent No. 405,778, dated June 25, 1889.
Application filed March 25, 1889. Serial No. 304,729. (No model.)
To all whom it may concern:
    Be it known that I, PETER H. JACKSON, of the city and county of San Francisco, State of California, have invented an Improvement in Frames for Illuminating-Tiles; and I hereby declare the following to be a full, clear, and exact description of the same.
    My invention relates to an improvement in illuminating-tiles to be employed as gratings covering vaults, roofs, floors, and other surfaces; and it consists of the peculiar construction and arrangement of sash-bars wherein the glass is to be held between said bars.
    Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a perspective view showing the construction of my sash and manner of securing the parts together. Fig. 2 is a modification showing a different way of securing the side bars. Fig. 3 is a view showing these side bars dispensed with where the tiles are used between beam-risers. Fig. 4 shows the manner of constructing the T-bars when they are made of cast-iron.
    It is usual to make illuminating-tiles of this kind with heavy cast-iron sash-frames glazed with thick glass, and where a number are together, to prevent leak at the joints between the tiles and to support their sides, bearers are used, secured to the sides of the tile-frames, the seam between the tiles being filled with cementing material. Wrought-iron frames are also used, made of several pieces riveted together and the spaces filled with cementing material; but these are quite expensive of construction, which is also the case with cast-iron frames on account of the cost of patterns and the continual alteration of the same to suit different lengths and various outlines of buildings where they are to be used, and to be of equal strength with wrought-iron frames they must be made much heavier and be supported by bearers, which causes an additional expense.
    The object of my invention is to produce a light and inexpensive frame for illuminating-tiles. In order to do this I take rolled T-iron as it comes from the rolling-mill, and these furnish the main supporting-bars. They are cut into the required lengths and then punched with slot-holes at or about the neutral axis of the bar, and through these slots
are passed small flat bars of wrought-iron, so that the flanges of these T-bars and the flat bars form supports for the glass.
    A A are the T-iron bars, having holes punched through them, as shown at B, this point being just above the bottom transverse flange of the bar A. These holes are such a distance apart as to admit the required size of a glass with which the frame is to be filled.
    C C are small flat bars of iron, which pass through these slots B, the T-bars being strung upon the flat bars, as shown, until as many of them have been put together as will serve to fill the required space, leaving the proper distance between these bars to receive the glass or tiles which form the covering. For the ends I use angle-iron bars E, and the ends of the T-bars have slots punched in them, as shown at F, so that the slots will fit over the edges of the horizontal flanges of the angle-iron bars, and rivets or bolts will then be put through the flanges of the angle T-iron bars, thus holding them firmly together.
    In some cases it may be found preferable to let the bottom flanges of the T-iron bars rest upon the tops of the horizontal flanges of the angle-iron bars, as shown at L, Fig. 1, in which case the T-bars will not need to be slotted, but the parts may be riveted together; or, if desired, instead of employing angle-iron bars and slotting the T-bars, I may use flat iron bars on edge and having holes punched through them, as shown at H, Fig. 2, and the ends of the T-bars may be formed with projecting tongues, which will pass through these holes and be riveted therein, thus holding the frames securely together. The flanges of the T-bars being lower than the transverse bars C, to bring them up to the same level and form a solid support for the glass I introduce wood, iron, or other solid material; or this space may be filled with cement of any suitable description, so as to make the proper support and bed for the glass. The spaces formed by this rectangular frame are of such size as to allow the glass to rest upon the bearings, as before described, and to leave a place between the glass and frame into which any suitable cementing material may be placed, which will harden and hold the glass and iron firmly in position, filling all interstices in slot-holes, stiffening the frame,