US614530A - brown - Google Patents

Description

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(Application filed Mar. 23, 1897.)

(No Model.)

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No. 6|4,53o.

Patented Nov. 22, |898. w. H. BROWN.

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(Application filed Mar. 23, 1897.)

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(No Model.)

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SPECIFICATION forming part of Letters Patent No. 614,530, dat@ November 22, 189e.

Application iiled March 23, 1897. Serial No. 628,824. (No model.)

To all whom it may concern.-

Beit known that I, WILLIAM H. BROWN, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Floors, of which the following is a specification.

The principal object of my invention is to produce a composite structure at a small expense which shall take the place and serve the purpose of the ordinary heavy metal floorbeams in architectural construction. In doing this I form the lower edge of the structure of'metal and provide it with numerous interlocking points or devices and then build upon the metal so formed a cement or concrete upper portion. The metal being, as is well known, very strong to resist tensile strains, and the concrete being equally strong to resist compression, while very much cheaper in cost than metal, besides being possessed of high combustion-resisting qualities, the composite structure embodies in a high degree the advantages while avoiding vthe disadvantages of both materials, besides securing comparative inexpensiveness.

Further objects are to provide a means for securing the flooring-strips strongly and securely to the beams, means for adj Listing said Hoor-strips, and to provide convenient spaces for pipes, wires, dac., comprised in the lighting or other equipment.

Referring to the accompanying drawings, which are made a part hereof and on which similar letters of reference indicate similar parts, Figure l is a perspective view illustrating an architectural floor construction embodying my said invention; Fig. 2, a similar view illustrating an alternative form of construction; Fig. 3, a transverse sectional view illustrating the methodof constructing the variety of floor shown in Fig. 1; Fig. 4, a similar View illustrating the method of constructing the variety of floor shown in Fig. 2; Fig. 5, a longitudinal sectional view (t. e., longitudinal of one of the beams) as seen from the dotted line 5 5 in Fig. 1, and Figs. 6 and 7 fragmentary perspective views of two forms of metal members adapted for use in the construction of beams embodying my invention. a

In said drawings the portions marked A represent the metal members; B, the concrete members; C, an expanded-metal sheathing, which is laid over the licor-beams to form the lower side of the floor; D, a body of concrete laid upon said expanded metal; E, wooden strips laid upon or embedded in said concrete; F, a wooden floor laid upon said strips, and G, G', and H casing-boards, which are used during the building ofthe floor as sides of molds, whereby the beams and ceiling are given the desired shape.

The metal beams A are preferably channelbeams, as shown in most places in the drawings, but may be T-beams, as shown in Fig. 7 These are arranged in use with the flanges extending upwardly and the smooth surface on the under side. Through the iianges are extended numerous horizontal pins or bolts d, around which the concrete in being placed in position will pass and which when the concrete is set will be firmly embedded therein, forming interlocking or engaging points or devices and strongly uniting the metal and concrete members of the completed beam. In the structure illustrated in Fig. l these transverse pins a extend through the flanges of the iron beams and project somewhat beyond the surfaces thereof. Upon these projecting ends I hang links Z, which carry rods r, and these in turn support the lathing to which the plastering is applied. Said pins or rods co thus serve a double purpose, both entering intothe construction of the beams and forming a means for supporting the plastering. In addition to these transverse pins ct I prefer also to insert vertical pins or bolts b, which pass up into the concrete, as shown, and which are preferably provided with tapered heads adapted to lit into countersunk holes in the under side of the metal members. These, as they extend up a considerable distance into the concrete, aid considerably in the matter of securing the members strongly together. They may or may not be provided with nuts or collars on the upper ends; but manifestly such nuts or collars are of some advantage. I also employ at suitable intervals vertical bolts e, which are like the bolts b, except that they are of greater length, and which at the upper ends pass through the woodenl strips IOO and provided at a p'oiit above its upper horizontal face with a number of engaging pins, as a, and a concrete member B placed on the upper side of the metal memberA and formed thereon While yet plastic to embrace the engaging points or pins of the said flanged metal member and to form When hardened the upper portion of the beam, whereby the metal and concrete are firmly united and so 1o combined as to utilize the best strength of both, all substantially as shown and described and for the purposes set forth. l

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 20th day of March; A. D. 1897.

WILLIAM r-i. BROWN. [n e] Witnesses:

CHESTER BRADFORD, JAMES A. WALSH

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