US508502A

US508502A - Fireproof construction

Info

Publication number: US508502A
Authority: US
Publication date: 1893-11-14
Anticipated expiration: 1910-11-14

Description

(No Model.)

M. H. ORITTENDEN & F. V. EMERY. FIRBPROOF GONSTRUGTION.

N0. 508,502. Patented No'v. 14, 1893.-

witnesses I Inventors Mas on ff. CrzJ/te 11,166 n m Fran/ 6 ILFmery. V

I By zlzez'rdtzorney the feet of the floor-joists.

UNITED STATES PATENT ()FFICE.

MASON H. ORI TTENDEN AND FRANK V. EMERY, OF MlNNEAPOLlS, MINNESOTA.

FIREPROOF CONSTRUCTION.

SPECIFICATION forming part of Letters Patent No. 508,502, dated November 14, 1893. Application filed April s, 1893. seat-.1 No. 468,831. (No model.)

T0 at whom it may col worn.-

Be it known that we, MASON H. GRITTENDEN and FRANK V. EMERY, citizens of the United States, residing at the city of Minneapolis, in-

the countyof Hennepin and State of Minnesota, have jointly invented certain new and sheet-metal pieces fastened together and having their ends supported by the flanges of the floor-joists; attaching to the under side of the ceiling-joists metallic lathing, and placing on their upper surfaces metalsheets u pou which can be laid cement, tiling, or other fire-proof materiaL. v

Our improvements are illustrated in the accompanying drawings, in which Figure 1, shows a sectional elevation of a floor and ceiling and their supports, constructed in substantial accordance with our improvements; and Fig. 2, a transverse section of the same on the line 90-00 of Fig. 1.

In such drawings 1 designates the floorjoists of metal and I-shaped; and 2 ceilingjoists which are preferably constructed of two strips of sheet-iron bent to channelshape and secured together at proper intervals by rivets 3, forming I-shaped bodies. The ends of the ceiling-joists thus constructed are provided with slots 4 of proper shape to fit the feetor flanges of the floor-joists. The metal at the upper edges of these slots is bent outward at opposite sides to form flanges 5 for the purpose of providing comparatively wide bases for seating the ceiling-joists on Ceiling joists thus constructed and supported and placed at suitable intervals, are sufficiently strong and provide suitable means for attaching and supporting metallic lathing of almost any usual construction, and also to sustain the weight of a superposed fire-proof body.

In the drawings there is shown, for the purpose of illustrating the mode of attaching the lathing to the joists, a sheet-metal lathing 6 having at intervals grooves or depressions 7, and the lathing is shown to be attached by means of nails 8 driven through the lathing and betweenthe sheets composing the ceiling-joists. As will be understood, there is sufficient elasticity in'the sheet-metal members forming the joists to permit nails to be driven between them at intervals and force the members slightly apart, while the latter serve to firmly clamp the nails.

The bodies of the ceiling-joists above the feet of the floor-joists may be of any desired height, in view of the kind of fire-proof filling to be used above it. It is preferable to place on the top of the joists 2 sheets of corrugated sheet-iron 9 for supporting the fireproof packing; and on these, as a foundation, cement 10, or any other suitable fireproof or non-conducting material may be laid, and be madeof such thickness as may be desirable in any particular structure. The material may be made to fill the entire space above the foundation 9 to the level of the tops of the floor-joists, and on it may be laid a tiling, wooden or other floor. Such construction is a desirable and cheap substitute for the ordinary arched ceilings formed of corrugated iron or terra-cotta, and at the same time provides convenient means for supporting a flat plastering surface for the ceiling.

It is not intended herein to claim broadly the character of ceiling-joists, or other building member described, for that feature is reserved to be claimed in another application concurrently pending Serial No. 468,833, filed April 3, 1893.

Having described our invention, what we claim is- 1. The combination with floor-joists and sheet-metal ceiling-joists supported on the feet of the former, ofmetallic lathing sup ported by the ceiling-joists below their bases and fire-proofing material supported on their upper surfaces, substantially as set forth.

2. The combination with floor-joists, of sheet-metal transverse joists seated on the feet of the floorjoists, corrugated sheettween such pieces, of a metallic base seated [0 metal supported on the transverse joists, and on the ceiling joists and fire-proofing matefire-proofing material supported by the corrial thereon, substantially as set forth.

rugated sheets, substantially as set forth. M ASON H ORITTENDEN 5 3. The combination with floor-joists, and FRANK V. EMERY.

sheet-metal ceiling-joists constructed of flanged sheet-metal pieces secured together Witnesses:

back to back and adapted to support lathing P. H. GUNCKEL, by means of nails driven into the joists be- R. BLUME.