US758443A - Illuminating vault-cover. - Google Patents

Description

PATENTED APR. 26, 1904.

J. T. HARROP.

ILLUMINATING VAULT COVER.

APPLICATION FILED DBO. 8, 1903.

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PATENTBD APR. 26, 1904;

J. T. HARROP.

ILLUMINATING VAULT COVER.

APPLICATION FILED D30. 8, 1903.

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.4 TTORNEYS UNITED STATES Patented April 526, 1904.

PATENT OFFICE;

JOHN T. HARROP, or GARFIELD, NEW JERSEY- I i ILLUMINATING VAULT-COVER.

SPECIFICATION forming part of Letters Patent No. 758,443, dated Apri1 26, 1904. Application filed December 8, 1903. Serial No. 184,266. (No model.)

zen of the-United States, residing at Gran field, in the county of Bergen and State of New J ersey, have invented certain new and.

useful Improvements in Illuminating Vault-- Covers, Floorings, and Roofings, of which the following is' a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to illuminating vaultcovers, floorings, roofings, and other structures of this class; and the object thereof is to provide a vault-cover, flooring, or roofing of the class specified which is strong and durable and comparatively inexpensive and which possesses a maximum power for the transmission of light; and the invention con.

sists in a novel form oftransparent or trans lucent lens or bulls-eye set into a cement frameor support in the manner hereinafter described and claimed and also in the trans parent or translucent lens or bulls-eye constructed as hereinafter described and claimed The invention is fully disclosed in the fol-' lowing specification, of which the accompanying drawings form a part, in which the sepa rate parts of m improvement are designated by suitable reference characters in each of the views, and in which t Figure 1 is a plan view, partially in section, of vault-cover or the like made according to my invention; Fig. 2, a partial section thereof on the line 2 2; Fig. 3, a side'view ofa lens or bulls-eye which I employ; Fig. 4, a transverse vertical section thereof, and Fig. 5 a sectional view showing the method of constructing a vault or other light according to my invention.

In the practice of my invention I provide a transparent or translucent lens or bulls-eye a, the body portion of which is cylindrical in I general form, but provided with longitudinal grooves a four of which are shown and the depth or length of which is preferably about a quarter greater than itstransverse diameter. The bulls-eye a is provided transversely of the grooves c with projections or ribs a a, and (5, arranged one above another, and the ribs are arranged in separate horizontal planes,

the bottom rib'sla being preferably flat on their under sides, as shown at a The ribs (0 a, and a as hereinbefore stated, are arranged transversely of the groove portlons a of the bulls-eye, and between these ribs the bulls-eye is provided with vertically-arranged ribs or projections (0 which correspond with the grooves a and which are not crossed, by the ribs or projections a a, and aE-and said ribs or projections are deeper than said grooves. The bulls-eyes a, any desired numberof which may be employed, are alsopreferably slightly greater in diameter or dimensions at Y the top than at the bottom, and the ribs or projections a a, and a? serve to hold the said bulls-eyes securely in a bedding of cement or similarmaterial in whichthey are placed.

In the forming the vault or other light I provide a suitable box or frame 6, which is placed on suitable supports 0, and between thesesupports, at the top thereof, is placed a board or other support cl, which is held in proper position by a suitable frame or support CZ. Over the board or-support d is placed a piece of cardboard e or other thin material, and this cardboard or other thin material isprovided at regular intervals and according to the position in which it is desired to place the bullseyes in the vault or other light with openings 6 adapted to receive the lower end of the bulls-eyes, and said bulls-eyes are positioned by inserting the lower end thereof in-' the openings 6 and the ribs 0& rest on the cardrial. Figs. 1 and 5 show the method of arranging the bulls-eyes in the frame I), and the sheet 6 serves to hold the bulls-eyes in proper position during the process of packing said bulls-eyes in a bedwork of cement, which is shown at f. When the bulls-eyes have been properly positioned, I place a layer of cement in the box I), which is packed around the bullseyes and over which is placed a plurality of metal rods 9. Anotherlayer of cement is placed in position, and other rods h are placed thereon, and the cement is placed over the rods 7t and filled in around the bullseyes up to and flush with the tops thereof, as clearly shown in Fig. 5. After the cement becomes set or hard the vault or other light thus formed is removed from the frame I), and the sheet 0 is torn off or removed, and the space occupied by said sheet is filled with ordinary plaster, as shown ate in Fig. 2.

It will be understood that the rods 9 and la reinforce and make stronger the bedwork of cement, which constitutes the body of the light, or of the framework in which the bullseyes are placed, and these rods may be employed in any desired manner, or any suitable metal centering may be substituted therefor. The bulls-eyes a are also preferably provided in the bottom thereof each with a recess a which extends upwardly thereinto about three-quarters of the vertical height thereof, and these recesses aid the refractory powers of the bulls-eyes while not reducing the strength thereof to any extent, and the ribs 00, a, and a also modify to an extent the action of the bulls-eyes in the transmission of the light therethrough.

In practice Iprefer to arrange the lenses or bulls-eyes a in the cement bed, so that the ribs a a, and a of one of said lenses or bullseyes will extend in the direction of one of the vertical ribs in the adjacent bulls-eyes or lenses in rows that are arranged transversely and in opposite directions, as shown in Fig. 1; but their positioning of the bulls-eyes in the cement bed or frame is not an .essential feature of this invention.

This improvement may bemade in the form of panels to be set in any suitable frames, or it may be employed in connection with any suitable frames or supports, all that is necessary being that a bottom, base, or support be provided on which are placed the lenses or bulls-eyes, said bottom serving as a support for the cement while the latter is becoming hard or set, and it will also be apparent that any suitable cement, concrete, or similar material may be employed as a bed or holder for the lenses or bulls-eyes.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. lna vault or similar light, a lens or bullseye, which is substantially cylindrical in form and the outer surface of which is provided in the opposite sides thereof with vertically-arranged grooves forming corresponding ribs,

and short transverse ribs arranged in horizontal planes and crossing said grooves, said transverse ribs being deeper than said grooves, substantially as shown and described.

2. In a vault or similar light, a lens or bullseye, which is substantially cylindrical in form and the outer surface of which is provided in the opposite sides thereof with vertically-arranged grooves forming corresponding ribs, and short transverse ribs arranged in horizontal planes and crossing said grooves, said transverse ribs being deeper than said grooves, and the bottom transverse ribs being flat on their under sides, substantially as shown and described.

3. In a vault or similar light, a lens or bullseye, which is substantially cylindricalin form and the outer surface of which is provided in the opposite sides thereof with vertically-arranged grooves forming corresponding ribs, and short transverse ribs arranged in horizontal planes and crossing said grooves, said transverse ribs being deeper than said grooves, and the bottom transverse ribs being fiat on their under sides, said lens or bulls-eye being provided in the bottoms theieof with recesses which extend upwardly, substantially as shown and described;

4. A vault or similar light, comprising a plurality of lenses or bulls-eyes set into a bed or support of cement reinforced with metal, said lenses or bulls-eyes being approximately cylindrical in form and being of a depth greater than their transverse diameters, said lenses or bulls-eyes being also provided in the opposite sides thereof-with vertically-arranged grooves and short transverse ribs arranged in horizontal planes and crossing said grooves, and of greater width than the depth of said grooves, the bottom transverse ribs being fiat on their under sides, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 4th day of December, 1903.

JOHN T. HARROP.

Witnesses:

F. A. STEWART, (J. E. MULREANY.

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