US1729118A - Concrete structure - Google Patents

Description

p .1929 J. J. MORGAN 1,729,118

' I CONCRETE STRUCTURE Filed Jan 3, 1.927

I V 22. u Q

gwuenloz Patented Sept. 24, 1929 unrrso STATES PATENT OFFICE JOHN J. MORGAN, OF COLUMBUS, OHIO, ASSIGNOR F ONE-HALF TO CHARLES VOGEL,

' OF COLUMBUS, OHIO CONCRETE STRUCTURE Application filed January 3, 1927.

This invention relates generally to monolithic or concrete structures and is especially directed to novel apparatus for effecting in a convenient and economical manner the molding of concrete in the form of beams or floors in the construction of buildings and the like.

It has been customaryin the design and formation of concrete beams and floors to i provide forms in the nature of sheet metal pans, which are positioned so as to define the sides of a pair of adjacent beams and the coiling between the beams. These pans which are of inverted U shaped form in cross sec- 7 tion, have commonly been supported on strips which engage supporting timbers or joists, the bottom or lower surfaces of the beams being defined by wooden forms or by the supporting chamber. After theconcrete hasbeen hardened to a certain extent, it is desirable that the pan shall be removed as quickly as possible for reuse, and this is done before it would be safe to remove the oists or timbers which act to support the beams or flooring.

, The present invention relates to a device so constructed that the pansmay be removed at p the desired time without in any way interfering with the supporting oists, with very considerable convenience and at a low cost.

In accordance with the present invention a pan supporting element is provided in the form of a sheet metalfor wire stamping which is adapted to be secured to the top bar of the supporting oists and is provided with a substantially hook snaped outwardly extending portion for the reception of the lower edges of the pan, the hook shaped portions of the supporting clips servingto retain the pan in place in connection with the joists while the concrete is being poured, the arrangement being such, however, that when it is desired to remove the pan the outer lip or tongue of the hook shaped portion of the clip is bent downwardly against the side of the associated joists to permit of the withdrawal of the pan from their operative position.

For a further understanding of the invention reference is to be had to the following description and to the accompanying draw- I ing, wherein, I Figure 1 is a vertical sectional View taken Serial No. 158,553.

through concrete flooring and disclosing the positions of the supporting clips, comprising the present invention, and their relation to the pan forms and the underlying joists,

Figure 2 is an enlarged vertical sectional view disclosing the construction of a clip on a larger scale,

Figure 3 is a perspective View of the clip,

Figure 4 is a plan view of the blank from which the clip is formed, and

Figure 5 is a transverse sectional view disclosing a slightly modified form thereof.

In the drawings it will be seen that the apparatus employed is intended for use in the molding or forming of concrete beams 10, and the intervening floor or ceiling slots 11. To this end use is made in the usual manner of the inverted U shaped forms or pans 12, having the usual horizontally disposed upper portions 13 and the depending side walls or vertical portions 14. The bottom of the beams are defined by means of bars 15 of wood, which may consist of boards or planks suitably supported upon the joists or timber frames 16. The width. of the bars 15 serves to define the thickness of the beams 10, and it is obvious that this may be varied in accordance with desired specifications.

In eifecting the removable support of the pans 12 the present invention provides a sheet metal clip designated in its entirety by the numeral 17. This clip, as shown in Figure 4, is formed from an integral stamping and in the preferred form of the invention is substantially triangular in configuration, the apex portion thereof being bent along the broken line a and is bent downwardly soas to produce a securing I prong 18, which is adapted to be driven into the upper surface of the bar 15. The clip is again bent around the broken line b so as to produce an overhanging vertically disposed wall 19 which lies immediately adjacent to one of the wide walls of the bar 15, the intervening body portion of the clip betweenthe prong 18 and the wall 19 being disposed in a horizontal plane and arranged to engage the upper surface of the associated bar 15. The blank from which the clip is formed is again bent on the broken line 0, and the material is bent upwardly to produce a pliable supporting tongue or hook 20, the upper edge of which being extended so as terminate in a plane well above that of the top of the bar 15. It will thus be seen that by shaping the clip as indicated a supporting pocket will be produced between the wall 19 and the tongue 20, whichreceives the lower edge portion of the walls 1 of the pan 12.

In practice, the clips are driven into the supporting bars 15 along the opposite longi-- tudinal edges thereofat appropriately spaced longitudinal intervals, and after the supporting timbers have been erected the pan may be placed upon the supporting clips and retained in secured relation with respect to the joists. The concrete is then poured and allowed to harden to a predetermined or suitable extent. After this has been accomplished and it is desired to remove the pan for use in other operations, but without removing the supporting joists, the tongues or hooks are bent downwardly as shown in dotted lines in Figure 2 so that said tongues or hooks will lie approximately in the plane of the walls 19. This deprives the pan of their support, and permits of their removal from engagement with the beams and slots .10 and 11, allowing the pans to be placed into immediate service in other operations while the hardening of the concrete in the final form is allowed to take place. It will thus be seen that through the use of the present invention it is not necessary to retain the pans in position until the underlying joist has been removed. This results ina considerable saving in time and also in the number of pans which may be used on any given operation. I

A considerable economy is thereby effected in the forming of the wall. After the timbers have been taken down the clips may be rebent to assume their pan holding positions, and

employed in subsequent operations. This therefore, may avoid the destruction of the cli )s in releasin the ans as has been roposed in previous constructions.

In Figure 5 a modification has been dis closed wherein the supporting clip extends completely across the upper surface of the bar 15. Thisclip is designated by the numeral 21, and has the body portion thereof provided with downwardly directed prongs or spurs 22 which are employed to fasten the clip in connection with its associated bar. This construction is particularly useful where the bar is of reduced thickness and moreover possesses augmented strength in supporting greater loads. By extending the tongues 20 above the horizontal plane of the upper surface of the bar 15, the said tongues serve as a stop or guard resisting the lateral movement of the plan and to confine it to the pocket formed by the clips.

It is obvious that the constructions de scribed are capable of being modified or v fore capable of being expressed in several different forms and should not be limited to the precise construction disclosed and described except as indicated in the following claims.

l/Vhat is claimed is:

1. A concrete form support comprising an integral metallic clip constructed to provide a body portion having an integral spur formed therewith for securing said body portion to the upper surface of a supporting joist, the outer part of said body portion being downwardly bent to provide aneoverhanging wall lying adjacent and parallel to the side wall of said joist, said overhanging wall being terminated at its lower end to provide a spaced upwardly extending and outwardly inclining pliable tongue, the upper edge of the latter being terminated in a plane above the body portion of the clip, there being a receiving pocket formed between said tongue and said overhanging wall for the reception of the lower edge of the concrete form, said tongue being capable of being downwardly bent to lie in the plane. of the overhanging wall to permit of the release of the associated form.

2. A concrete form support comprising an integral sheet metal clip of substantially triangular configuration, said clip being formed to include a body portion including a downwardly directed spur formed by the apex of the blank, the body portion being downwardly bent at its outer edge to provide an overhanging wall lying adjacent and parallel to the side wall of the joist, said overhanging wall being terminated at its lower end to provide a spaced upwardly extending pliable tongue, the upper edge. of the latter being terminated in a plane above the body portion of the clip, there being a receiving pocket formed between said tongue and said overhanging wall for the reception of the lower edge of the concrete form, and said tongue being capable of being bent down wardly to lie in the plane of the overhanging wall to permit of the release of said form from engagement with the clip.

In testimony whereof I afiix mysignature.

JOHN J. MORGAN.

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