US275151A - August w - Google Patents

Description

(No Model.)

. A. W. CORDES.

PIRE PROOF CEILING.

No. 275,151. Patented Apr.3,1883.

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AUGUST IV. CORDES,

PATENT EEICE.

or NEW YORK, N. Y.

FlRE-PROOF CEILING.

SPECIFICATION forming part of Letters Patent No. 275,151, dated April 3, 1883.

Application filed June 6, 1882. (No model.)

To all whom tt may concern Y Be it known that I, AUGUST W. CORDES, of

. the city, county, and State of New York, have invented certain new and useful Improvements in FireProof Ceilings, of which the following. is a specification.

This invention has reference to an improved fire-proof ceiling which is to be used in connection with wooden floor-beams, it being so constructed that the fire-prooi` plates forming the ceiling are suspended independently ofthe distance of the beams from each other, so that a uniform size of plates can be used, which could not be done heretofore, as the fire-proof plates forming the ceiling have to be specially made for the distance between the beams, and even then do not always furnish a good iit, owing'to irregularities in the laying ofthe beams or in the shape of the plates. l

My invention consists in suspending` the liref proot` plates which form the ceiling, not diu of wrought iron.

rectly from the door-beams, but supporting them on intermediate I-shaped bearing-rails, which are suspended transversely to the oorbeams by wire clamps or other suspension devices applied to strong nails of the beams..

In the accompanying drawings, Figure l represents a perspective view of my improved iire-proof ceiling, shown as suspended from ther floor-beams, and seen from above. Fig. 2 is a perspective view of the ceiling, seen from below; and Fig. 3 is a detail side view, partly in section, through one of the bearing-rails, showing the method of suspending the ceiling from the beams.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the floor-beams of a building, from which the fireproof ceiling is suspended at some distance below the bottom surface of the beams by bearing-rails B, of I-shaped cross-section. In Fig. 3 one of the bearing-rails B is shown in detail section, said rails being preferably rolled The bearingrails B are hung, transversely to the beams, to thelower ends of wire suspension-clamps C, of suitable length, which are attached to the beam by nails d, as shown in Figs. l and 3. The clamps O are made of a loop-shaped upper part, that readily slides along the fastening-nail d, and of laterally-bent lower ends that take hold of the upper rail ends. The wire suspensionclamps are firmly secured to the bearing-rails B by sliding links 6,which,when being moved up along the clamps C, allow them to spring apart, so as to be readily removed from the rails. On the lower parts of the bearing-rails B are supported the fire-prooil plates E, which form the ceiling, and which are made of fireclay or other suitable iireproot' material, and provided with strengthening and overlapping ribs at the upper side and dovetailed grooves at the under side for the plastering. .Over the tire-proof plates E and the rails B is preferably laid a layer ot' cement, whereby the connection ot' the same is rendered more rigid.

' My improved construction of fire-proof ceiling has the following advantages:

First. lt protects the floor-beams absolutely against re, as they are entirely separated from and protected by the lire-prooi' plates, and prevented from being charred by the tillingot' ashes between the ceiling and the beams.

Second. Only one size of lire-proof plates is required for all ceilings,whatever the distance of the Hoor-beams from each other, while the same suspension device is used throughout.v

Third. After the ceilingis plastered theoor can be laid on the beams and nailed down without interfering in the least with the ceiling below, as even the strongest blows have no injurious effect upon the ceiling.

Fourth. Theceilingcan bequicklysuspended at an accurate levelby simply running horizontal guide-strips along opposite walls, and placing on the same a supporting-frame at a height at which the plates are to be suspended. On this frame is placed a row of plates, which are connected at the edges by the I-sha'ped bearing-rails, that are then suspended by the wire clamps from the beam, after which the frame is moved forward for the next row of plates, and so on.

Fifth. As the ceilingis freely suspended from the beams, the shrinkage or warping ot the beams has noinfluence on the ceiling and produces no cracks or inequalities therein, espe- Ycially as the loops ofthe clamps move up along the nails whenever a settling in downward direction takes place.

Havingthus described myinvention, I claim as new and desire to secure byLetter's Patent- 1. The combination of the wooden iloor= ICO beams A, bearingrals B, suspension devices In testimony that I olailn the foregoing as C, applied to the side of the beams near the my inyention I have signed my name in presupper part thereof and to the bearing-rails, ence of two subscribing witnesses.

and lire-proof plates supported by the bearing 5 rails, substantially as set forth. AUGUST IV. CORDES.

2. The combination ot1 the floor-beams A A, I-shaped bearing-rails B B, Wire suspension- Vitnesses: clamps C G, hung to nails d of the clamps and PAUL GOEPEL, applied by links e to the rails, and fire-proof CARL KARR. 1o plates E, substantially as set forth. i

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