US1474660A - Form support - Google Patents

Description

5 HIT FORM SUPPORT NOV- Fild 2. 1921 WP v Patented Nov. 20, 1923.

WILLIAM E. WHITE, OF CHICAGO, ILLINOJ IS.

FORM SUPPORT.

Application filed December-2, 1921. Serial No. 519,374.

To all whom it may concern:

Be it known that 1, WILLIAM E. WHITE, acitizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Form Support, of

which the following. is a'specification.

My invention relates to concrete structures and particularly to novel apparatus for use in connection with the molding of concrete in the form .of beams and floors for buildings. A similar construction is shown in my co-pending application Ser. No. 519,37 3, filed Dec. 2,1921. I 1

It has been the custom in practical operation for many years to shape the necessary beams intended as a support for concrete floors by providing forms in the nature of sheet metal pans, these serving to define the sides of a pair of .adjacent beams'and the ceiling between the beams. These pans have commonly been supported on strips which engage joist, the bottoms of the beams being defined by plates held on the tops of the joist. After the material has hardened to a certain extent, it is desirable that the pans be removed for reuse, this being done long before it would be safe to remove the joist which act as a support for the beams. My

improvement relates to a device so constructed that the pans may readily be removed at the desired time without interfering with the joist.

The invention comprises essentially a supporting element which may be in the form of a stirrup having hooks projecting laterally therefrom, together with wire brackets adapted to engage the hooks and of triangular form having a horizontal portion acting as a support, a vertical portion adapted to lie against the joist, and a strut adapted to be severed when the pan is to be dropped.

The invention will be more readily under stood by reference to the accompanying drawings, wherein,

Fig. 1 is a sectional view showing "a plurality of supports and the apparatus em-' ployed y me for maintaining the parts in proper relation. 7

Fig. 2 is a similar enlarged sectional view.

Fig. 3 is a perspective view of one of the stirrups, showing in dotted lines the contemplated variation in length thereof in order to provide for beams of difierent depths; and,

i Fig. 4 is a face view of the bracket in engagement with the end of a stirrup.

In the drawings it will be seen that'the apparatus employed is intended for use in molding beams 10, and intervening floorr slabs 11. To that end I provide in the usual manner, inverted pans having the flat portions 12 and the vertical portions 13-. The

bottoms of the beams are'defined by means of plates 14, which may consist of boards or planks suitably supported upon. joist 15. The plates 14 serve to space apart the vertical portions 13 of the pans and the vertical position of the plates relative to the depth of the pans determines the depth of the beam relative to the floor.

.The construction heretofore described is old and well known. In my adaptation, however, I provide stirrups 16, which rest upon the tops of the joist 14and are spaced apart at suitable intervals. The stirrups have over-hanging portions 17, the extremities of which are rebent to form hooks 18. As shown in dotted lines in Fig. 3, Iv contemplate varying the length of the overhanging portions 17 of the stirrups in order to facilitate the molding of beams of different depths. This is accomplished by providin brackets formed of a section of wire bent into U-shape, as viewed in front elevation in; Fig. 4, the extremities of'the'wire being bent into triangular form and having a vertical portion 19, adapted to lie against the joist, a horizontal portion 20 which acts as a support for the flanged lower edge of the pans and an inclined portion 21, which acts as a strut and serves to support the horizontal portion. The inner end of the horizontal portion is bent around the vertical portion, which is offset as at 22, for that purpose. The part 23 of wire connecting the two bracket portions, is shaped to enhasset to a desired extent, the struts 21 are severed by means of a suitable tool. This will free the horizontal portion of the bracket and the bracket may then be raised sufficiently to unhook the same from the V stirrup and thereafter discarded. The pans may then be disengaged and lowered in the usual manner. The brackets being composed of Wire may be cheaply made and the cost incident to their construction is inconsequential. In order to vary the depth or the beams it is only necessary to provide stir-' claims.

' I claim:

1. In a device of the class described, the combination with a joist of a stirrup fitting thereover, hooks provided on the vertical portions of the stirrup, and a Wire bracket adapted to be hung on a hook and having a horizontal portion acting as a support for a pan, and an inclined brace portion adapted to be served to permit the pan to be dropped.

2. In a form support, the combination of a stirrup, adapted to cooperate with a joist and provided with lateral projections in the form oi bracket supports, and a triangi'ilar wire bracket adapted to engage a vertical.

portion adapted to rest against the joist, a horizontal portion adapted to support a pan, and an inclined ip'ortion acting as a strut and adapted to be severed to permit the pan to be dropped. j

8. In a form of support, the combination of a plate adapted to lie over the top of a joist and provided with depending hook portions, and a Wire bracket adapted to engage one or" said hooks, the depending terminal portions of said bracket being oit triangular form including a pan supportg portion, and a brace portion, the brace portion being adapted to be severed topermit'of the dropping of the pans.

4. In a device for supporting steel forms for concrete, the combination With a supporting joist, of a stirrup having hook shaped projections, and Wire pan supports engaging said projections, said Wire devices having a brace portion adapted to be severed to permit the'disengagement of the support from the stirrup and permit the dropping of the pans. p

5. In support means for forms for the production'ot concrete floors, metallic hangers adapted to be supported on temporary joists beneath the floor, and destructible metallic support elements adapted to engage the hangers and to support the forms,'the destruction of said elements permitting the tree removal of the forms from the concrete floor. 7

Signed at Chicago, Illinois, this 28th day of November, 1921.

WILLIAM E; WHITE.

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