US469121A

US469121A - Fire-proof ceiling

Info

Publication number: US469121A
Authority: US
Publication date: 1892-02-16
Anticipated expiration: 1909-02-16

Description

(No Modem P. M'. BRUNER. FIRE PROOF GBILING.

Patented Peb. 16, 1892.

me nomme. ravens co., morufumol. wAsumn'mn, o. c.

NITED STATES PATENTS-Ormes.

PRESTON IWI. BRUNER, OF ST. LOUIS, MISSOURI.

FIRE-PROOF CEILING.

SPECIFICATION forming part of Letters Patent 110.469,121, dated February 16, 1892.

Application filed April 21, 1891. Serial No. 389,811. (No model.)

To all whom llt may concern.'

Be it known that I, PRESTON M. BRUNER, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Fire-Proof Ceilings, of which thefollowing is afull, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My present invention relates to certain improvements in the general class of tire-proof ceilings shown, described, and claimed in Letters Patent of the United States No. 303,438, issued August 12, 1884, to Louis Lafond, and which is now owned by me, No. 356,7 03, issued to me January 25, 1887, and No. 356,704, issued to me January 25, 1887.

My present invention consists in features of novelty hereinafter described, and pointed out in the claims. I

Figure I isa vertical section illustrative of my invention and taken crosswise of the I- beams of the ceiling. Fig. IIis a vertical section on a smaller scale and taken lengthwise of the I-beams of the ceiling. Fig. III is a perspective view of one of the iire -proof plates or tiles, showing asingle pair of supportingribs located about the center or middle of the tile. Fig. IV is a vertical section showing each alternate tile or plate with two pairs of supporting-ribs and the intermediate tiles rabbeted to iit on the edges of the ribbed tile.

Fig. V is a perspective View of one of the ribless tiles shown in Fig. IV, and Fig. VI is a perspective view of one of the ribbed tiles shown in Fig. IV. Fig. VII is a vertical section representing still another form of tiles wherein each is provided with a pair of ribs at one edge and the other edge provided with a rabbet to receive or rest upon the edge of its neighbor. Fig. VIII shows still a different form wherein a rib is formed on the outer edge of each-tile andthe two ribs of the adjacent edges of two tiles forming a pair.

In carrying out my present invention I proceed by using such I-beams as are shown in the patents referred to and by the use of such bars as those indicated by the letter C in the Lafond patent, or instead of using tlat bars rods or round bars of iron may be usedas, for instance, the rods N in my Patent No. 356,703. These bars or rods, which are indicated by the numeral 1 in the drawings of mypresent speciiication, rest with their ends upon the lower. flanges of the beams 2. In the Lafond patent the ceiling plates or tiles E (the same parts are indicated by the numeral 3 in my present specification) were held in place or supportedon hangers D, fitted over the bars C and having their lower ends turned outwardly to receive and support the plates or tiles. In my present construction the hangers D are dispensed with and the plates or tiles 3 are provided with ribs 4, arranged in pairs, as shown, and adapted to embrace the bars 1. These ribs 4 may be placed in the center of the plates or tiles 3, as shown in Figs. II and III, with the adjacent edges of the plates or tiles litted together with a rabbeted joint, as shown in Fig. II, or each alternate plate or tile may have two pairs of the ribs 4, as shown in Figs. IV and VI, and the intermediate plates or tiles may be made ribless (see Fig. V) and supported by having a rabbet-joint, with the i plates or tiles having the ribs, as shown in Fig. IV; or, again, the tiles or plates 3 may have a pair of ribs at or near one edge, as shown in Fig. VII, andthe other edge of said plate has a rabbet connection with the adjacent plate or tile; or, again, the plates or tiles may have one of a pair of ribs formed near the edge, as shown in Fig. VIII, the ribs of the adjacent edges of the two plates or tiles forming a pair, embracing the bars 1. I have thus shown how the ribs on the plates may be modified as to location without departing from the spirit of my invention, and still other modifications might be made or resorted to. When the plates or tiles are put in place, the space between each pair of ribs is iilled with a grouting or cement 5, which soon hardens, and the tiles or plates are thus permanently made fast to the bars 1 and held from any possible movement, while the lower surface or face of the ceiling is not distigured in any way by the appearance of the object which supports the plates or tiles. It will also be observed that the bars 1 are completely inclosed and are located some distance above the lower surface of the plates or tiles, so that in case of fire they are not subjected to intense heat, and in the use of water in case of lire they are entirely protected from the water. rlhe ribs 4 also tend to strengthen the tiles,

fl N,

and after the tiles are in place a coating 6 of cement may be placed upon. them, and in order to get this coating of a substantially uniform thickness Without too much loss of time in measuring the thickness of the coating as it is put on I form shallow ribs or projections 7 r on the upper surface of the tiles or plates,' and the coating is put on to the height of these ribs. The coating serves to close the joints of the tiles or plates and serves to form a continuous surface, which adheres firmly to the tiles or plates, so that in case a sect-ion of the tiles or plates should become cracked or fractured it will not fall, but will be retained or held in place by the coating 6.

One very great advantage arising from my present form of ceiling resides in the fact that l the lower surface of the plates or tiles Will be perfectly smooth and level when .the ceiling is completed, regardless of the difference in thickness of the flanges of the I-beams, which makes a difference in the height of the bars 1, and regardless of any sag there may be in the different bars, for it will be observed that the height of the space between yeach pair of ribs being greater than the Width of the bars the plates or tiles may be adjusted in height before the grouting is put in, When it will make no difference Whether one bar is nearer the top of the ribs ythan another or not. In Fig. VI,I have shownone of the bars near the 5 bottom of the ribs and the other Vnear the top. s'

I claim as my inventionl. In a fire-proof ceiling, the combination 1 of the bars, the plates or tiles having ribs emribs and rabbeted together at their edges, and v the iillin g or groutin g adapted to support said barsout of contact with said ribs and plates, substantially as set forth.

3. In a fire-proof ceiling, the combination of the bars, the plates or tiles, each having a pair of ribs arranged approximatelyto each other to embrace the bars, with freedom for adj ustmentwith relation thereto,and va filling or grouting, substantially as Aand for the purpose set forth.

4. In va fire-proof ceiling, the combina-tion of the bars suitably supported, the plates or tiles having ribs adapted to embrace the bars and receive a filling lor grouting, and a coating 6, substantially as and for the purpose set forth.

5. In a tireproof ceiling, the combination of the bars'suitably supported, plates or tiles having ribs adapted to embrace the bars and to receive a filling or grouting, ribs 7 on the plates or tiles, and a coating 6, substantially as vand for the purpose .set forth.

PRESTON M.' BRUNER.