Building construction form

July 16, 1935.

C. W. WADDELL

BUILDING CONSTRUCTION FORM

Filed Dec. 12, 1932

2,008,162

Sheets-Sheet 1

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July 16, 1935.

C. W. WADDELL

BUILDING CONSTRUCTION FORM

Filed Dec. 12, 1932

2,008,162

Sheets-Sheet 2

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Patented July 16, 1935

2,008,162

UNITED STATES PATENT OFFICE

2,008,162 BUILDING CONSTRUCTION FORM Clarence W. Waddell, Dallas, Tex. Application December 12, 1932, Serial No. 646,925 6 Claims. (Cl. 25—131)

This invention relates to new and useful improvements in building construction forms.

One object of the invention is to, provide an improved form which may be expeditiously and ₅ conveniently assembled to provide forms for molding concrete beams, girders, slabs, walls, and the like.

A particular object of the invention is to provide a molding form including a plurality of IQ· sheets arranged with divergent slots, whereby they may be adjusted in different directions and easily fastened in adjusted positions.

Another object of the invention is to provide a form sheet made of metal and having a plu15. rality of adjustment openings filled with.a softer material, which may be knocked out when it is desired to use one or more of said openings.

Still another object of the invention is to provide a simple fastening means for preventing 2q buckling of the sheets and for holding them in position against the sides of a column, beam or other construction.

Another object of the invention is to provide an improved fastening device for securing the 25 sheets together and also for fastening them in place.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention. .

g₀: The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Figure 1 is an isometrical view of a form constructed in accordance with the invention, .

Figure 2 is a detail showing one of the joints and the fastening means therefor,

Figure 3 is an enlarged view of the same, 40 Figure 4 is a detail in perspective showing one of the corner connections,

Figure 5 is a transverse sectional view showing a slab and beam form,

Figure 6 is a detail showing two of the sheets 45 adjusted in offset relation,

Figure 7 is a side elevation of one of the clamps,

Figure 8 is a longitudinal vertical sectional view of the same,

Figure 9 is a horizontal cross-sectional view, 50 taken on the line 9—9 of Figure 7,

Figure 10 is a horizontal cross-sectional view taken on the line 10—19 of Figure 7, and

Figure 11 is a view of the wedge which is used in connection with the clamp.

In the drawings the numeral 10 designates a sheet which is preferably , made of metal, but which may be made of any suitable material. Each sheet is provided with a vertical flange ft at one end thereof and the sheets may be of any desired size. A plurality of these sheets are 5, used in. the construction of forms for molding concrete columns, beams, walls and the like.

Each sheet is provided with a plurality of slots or openings 12 which are positioned in staggered relation over the entire area of the sheet and 10. flange. The slots are made sufficiently large to receive an ordinary tenpenny nail, but the invention is not to be limited to any particular size of said slots.

In, carrying out the invention in the construe- 15 tion of a column form, as shown in Figure 1, four sheets 10 are used. The sheets are positioned to, form a square, the flange ί I of one sheet lying contiguous to· the rear side of its adjacent sheet. It is noted that the slots 12 in the 20 flange of one sheet are divergent from the slots in the adjacent sheet. By arranging the slots in this manner, one or , more of. the. slots in the flange will, at all times, be in registration with a similar number of slots.in. the adjacent sheet, 25 no. matter what position the sheets are in relation to. each other. (Figure 6.) It is obvious that the size of the form can easily be enlarged or reduced by merely sliding each sheet outwardly or inwardly along its adjacent sheet. 30

If desired, the slots. (2 may be closed or filled UP with lead, putty, or any similar substance, whereby a smooth surface is had. The slots which are in registration when the sheets are in an adjusted position, may be easily punched out. 35 After the form has been used the slots so· opened may be refilled and the sheets are ready for use in constructing another form. Any suitable means may be used for fastening the sheets in adjusted positions. However, I have shown a 40 most simple and effective way of securing the sheets together. As has been hereinbefore explained, two or more slots in each flange ί I register with slots in the adjacent sheet. An ordinary nail 13 (Figure 3) is passed through the ⁴⁵slot 12 in the flange and through the slot in the sheet, the end of the nail extending outwardly from, the form. The slots are of such size as to prevent the head of the nail from passing therethrough. , A clamp 14 is locked on the outer end ⁰of the nail and bears against the outer face of the sheet to securely hold said sheet and the flange of the sheet together. If desired, a wedge 15' may be driven, between the inner edge of the 55

2,008,162 clamp and the sheet to assure a tighter fit between the sheets.

The clamp 14, as clearly shown in Figures 7 to 10, includes a square housing or sleeve 15. A 5 wedge-shaped dog IS having teeth 37 on its upper edge is provided with trunnions 18 on each side thereof, and these trunnions are mounted in vertical slots 19 in each side of the housing, whereby the dog '6 is only capable of vertical 10 movement. A drift plunger 20 is positioned beneath the dog and trunnions 21 on each side thereof ride in horizontal slots 22 in the sides of the housing. It is seen that the plunger is limited to a horizontal movement.

As the drift plunger is slid inwardly, it will ride beneath the wedge-shaped dog i 6 and due to the shape of both the dog and the plunger, the dog will be raised and the teeth 17 on the upper edge of said dog will grip the end of the nail 13, which is positioned between said upper edge and the top of the housing (Figure 3)... A lug 23 depends from the under side of the housing at the rear portion thereof. A similar lug 24 depends from the drift plunger at its rear 25 end,- and a wedge (not shown) may be driven between the lugs 23 and 24, when the clamp is in its locked position, to release the same. .It is obvious that the clamp is easily and quickly attached or detached and is most effective in clamping the sheets together.

By using the metal sheets together with a quick and easy fastening, means, the time, trouble and expense of building tlie usual wood forms are eliminated. The sheets can be made in standard 35 sizes, and due to the divergent slots in said sheets, it is possible to adjust the sheets in any vertical or horizontal position in relation to each other, thereby permitting any form necessary in building construction to be constructed..

in using the metal sheets I0 in the building of forms, it is necessary that a suitable bracing or reinforcing means be provided, as. the sheets are comparatively thin, their resiliency causing a . bending or buckling at their center portions.

Referring again to Figure 1, in the construction of a column form, transverse tie rods 25 are provided and each rod has a flattened portion or lug 20 positioned near each end. The rods are passed through one of the slots 12 about midway of each 50 sheet and after both lugs are within the form, the rods are turned so that the lugs are substantially at right angles to the slots. With this arrangement, it is impossible to withdraw the rods from the sheets without first alining the lugs 55 with the slots therein. The outer ends of the rods extend outside of the form and vertical channel bars 27 are positioned so that the outer end of each rod passes therethrough. The clamps 14 are then locked in position on the ends of the rods, ⁶⁰ and these clamps bear against the channel bars 27. It is readily seen that the lugs 26 prevent inward displacement of the sheets and the clamps ί-j, together with the channel bars, prevent any outer displacement thereof. The channel bars ^fi5 also serve to reinforce the form vertically and help to give it rigidity.

. Although I have illustrated and described the sheets as used in constructing a column form, it is to be clearly understood that the. invention is not to be limited to this particular Use. The flange ί i may be eliminated and the sheet could be merely a flat piece of metal. In fact, it has ... been found that it is necessary in constructing 75 some forms that the sheets be without the flange.

In Figure 5,1 have shown the construction of one form wherein the flat sheets are used.

The sheets 10, having the flange I1, are suitably supported on a jack, blocks, etc., and constitute the form for a cross beam of a room. The 5 sheets are braced by the rods 25 and the bottom of the form may be supported on the rods so that it is adjustable, whereby the form may be of any desired height. This beam ties into the vertical columns of the room. The flange I I projects 10 outwardly from the form and the ends of flat sheets 16' (without the flange) overlie and are supported by said flange. The sheets 10' may be secured to the flange by the clamps 14. Any number of flat sheets 10' may be used, depending 15 upon the length or width of the room, and the end of one sheet overlies the end of its adjacent sheet.. The sheets are fastened together by the clamps 14. Any suitable means (not shown) may be used for reinforcing the. sheets. Thus,, it . is 20 seen that a form, is constructed. for molding a cross beam and the floor of a room,.

It is obvious that by using the flat sheets 10', together with the sheets ID, it is possible to construct any necessary form. In constructing a 25 form for molding a concrete foundation wall, only flat sheets 10' would be used. The sheets would be secured together, as shown in Figure: 5, and the entire form, could be braced by horizontally extending channels which are held in place by 30 the rods 26 and clamps 14. It. is believed unnecessary to explain in detail the forms that can be constructed, by employing the sheets, but it is obvious that the sheets can be adjusted, quickly and easily to any desired size. Also, the sheets 35; being made of metal can be used indefinitely, whereas the usual wood form can be used only four or five times.

The description which has been given recites more or less detail of a particular embodiment of 40. the invention, which is set forth as new and useful, however, I desire it understood that the invention is not limited to such exact details of construction, because it is manifest that changes and modifications may be made, within the scope 45 of the appended claims, without departing from . the spirit of the invention.