US1260748A - Device for attachment to structural iron in concrete. - Google Patents

Description

D. W. BROOKS.

DEVICE FOR ATIACHMENT T0 STRUCTURAL IRON IN CONCRETE.

APPLICATION FILED JUNE 10. 1914.

1,260,748. Patented Mar. 26, 1918.

WITNESSES DAVID w. BnooKs, on NEW YORK,

N. Y., ASSIGNOR T0 CONCRETE .11 Ed AW 1 1M.

STEEL COMPANY, 015

new YORK, n. Y., A conrona'rron or DELAWARE.

Specification of Letters Patent.

Patented Mar.2fi,1918.

Application filed June 10. 1914. Serial No. 844,116

To all whom it may concern: 7

Be it known that I, DAVID W. BROOKS, a citizen of the United States, and a resident of the city of New York, county and State of New York, have invented an Improvement in Devices for Attachment to Structural Iron in Concrete, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to reinforcing meansfor use in concrete construction, one object being to provide a device which may be attached to members of the structural iron work in said concrete for purposes of local reinforcement. In the drawings accompanying this speclfication, I have illustrated several forms of reinforcing clip embodying my invention.

Figure 1 shows a preferred form of clip attached to a girder which isadapted to be embedded in concrete.

Fig. 2 is a view in vertical cross section showing a clip attached to a g1rder embedded in concrete.

Fig. 4 shows a preferred form of clip with its parts in normal unattached relation.

Figs. 3 and 5 illustrate modifications of the device and methods of attachment.

In Figs. 1 and 2 of the drawings, I have illustrated one form of my invention applied to a flanged steel girder 1. A concrete slab, as 2, for covering one side of sald girder, may be eifectively held in contact therewith and with adjacent inclosing concrete masses by suitable reinforcing and connecting means lrere shown as wire clips having attaching portions or 1ron engaging means 3 and 4 adapted to engage respectlvely the opposite edges 5 and 6 of the flange 7 forming the bottom surface of the girder 1. In order that the reinforcing clips here referred to may be easily and quickly applied to the girder and held securely thereon, the attaching portions 3, 3 and 4, 4, Fig. 1, of said clips are'connected by runs or reach mem bers 8 and 9 respectively so related to each other and to said attaching portions as to hold the latter in secure engagement with said flange by spring pressure.

Inasmuch as the attaching portlons 3 and 4 are normally adjacent to each other as shown in Fig. 4, and the runs 8 and 9 are disposed in similar relation, when 1t 18 desired to attach a clip to a girder, or other part of the structural framework, the said portions may be drawn apart against the spring resistance of their respective runs a sufficient distance to permit said portions to embrace the flange edges'5 and 6 respectively, and upon being released against said edges to maintain the clip in positive engagement with the girder. It will be obvious that the extent of the reinforcing may be varied considerably according to the number of clips thus attached to a girder over any given distance; also, when are attached so that their ends overlap, they may form a mesh like structure, the retaining capacity of which may vary in similar proportion. Each attaching portion may conveniently comprise spring pressed means as 10, and 11, Fig. 4, to grip the flange after the engaging means have been sprung over the edge thereof. As illustrated in Fig. 2, the runs 8 and 9 may be spaced from the face of the girder to pass substantially through the interior of the concrete slab 2 which may conveniently form a protective covering for said girder. In order that the masses of concrete inclosing the girder may be tried together to strengthen and unify the entire concrete covering, I have provided means on the reinforcing clip whereby a supported mass or slab as 12 may be connected with and help suspend theslab 2 formed on the depending vsurface of the girder l. Said means may comprise convolutions in said wire having portions 13 adapted to be embedded in the interior of the mass 12 and connecting portions 14 adapted to connect said portions 13 to the runs 8 and 9 hereinabove described as reinforcing the slab 2. Thus the latter may not only be secured in position on the 'rder by being suspended from the flange but also by being tied to the masses 12 which are firmly supported on said flange. Obviously, a similar. binding effect may be expected where the slab is not wholly pendent but is otherwise partially supported as in a slab covering a vertically disposed structural iron member.

In Figs. 1, 2, and 4, I have illustrated a preferred form of my invention; but it is contemplated that it may be embodied in a variety of forms some of which are illustrated in Figs. 3 and 5. Where separate pieces of wire are fastened together to form.

the clips a complete clip, any suitable connection may be made betweenthem. In the present case, Fig. 1, the wires are twisted together intermediate their'free ends which, upon being drawn apart. tend to spring back to their normal adjacent position, thus being adapted for positive attachment to a girder or the like. Where the wire parts are not thus joined, they may be made to grip the girder by crossing them intermediate their ends, Fig. 5, thus providing a fulcrum from which to deflect each end preparatory to attaching to a girder or the like.

It will be readily understood that among the advantages involved in the use of a device embodyin my invention are the ease and rapidity with whichit may be attached and the wide variety of uses to which it may be applied. As pointed out heretofore, thel degree of reinforcing efi'ect may be varied indefinitely by varying the number of clips or the size of'the wires, or both. The'positive gripping action of the said clips upon the flange or other suitable part of the framework insures a positive and secure connection therewith. At the same time, they may be removed .or have their relative positions altered without great difliculty at any time before they are inclosed in concrete.

I elaim'as my invention r A clip for use with structural iron in concrete, comprising runs interengaging between their ends to form resilient arms, the arms at each side of the engaging portions being normally juxtaposed and adapted to be spread apart in applying the clip to an iron. y

In testimony where, I have signed my name to this s ecification, in the presence of two subscribing witnesses, this 9th day of 40 June, 1914.

DAVID W. BROOKS.

Witnesses:

MANVEL Wrrrrrnmonn, Jomr W. THOMPSON.

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