US2951520A - Corner from clamp - Google Patents

Description

Sept. 6, 1960 P. T. LA BAR 2,951,520

CORNER FORM CLAMP Filed April 17, 1959 iililllllliinh I INVENTOR. PHIL T. LABAR BY g (5a ATTORNEY nit d S ate Patent fitice Patented Sephfi, i950 CORNER FORM CLAMP Phil T. La Bar, 2057 Coolidge St., Hollywood, Fla.

Filed Apr. 17, 1959, Ser. No. 807,216

1 Claim. Cl. 144-291 This invention relates to concrete form clamping means and whereby to rigidly support form boards where a corner column is to bepoured for binding engagement with the adjacent end portions of preformed and right angularly disposed concrete blockwalls.

In a masonry building, where the walls are formed of concrete blocks, it becomes necessary that the corners be reenforced by a poured reenforced concrete column and the customary practice is, to end the walls in a manner to accommodate the poured column that has a predetermined dimension and for this purpose, form boards are placed upon the outer sides of the walls, to partially overlap the walls and an inner form is engaged in overlapping relation to the walls and to thus jointly form a void into which the concrete is to be poured. Various means have been employed to brace the form boards against spreading under the weight of the concrete being poured therein, such means heretofore comprising tie wires or the like, which have been both unsatisfactory and costly from the standpoint of labor in the installation. The device of the present invention embodies a pair of opposed brace members that are formed of angle irons welded together and with the outer form brace extending over the outer form boards while the inner form brace overlies the inner form boards and with a clamp ing rod extending diagonally through the clamps of the form boards and diagonally through the void.

Novel features of construction and operation of the device will be more clearly apparent during the course of the following description, reference being had to the accompanying drawings wherein has been illustrated a preferred form of the device and wherein like characters of reference are employed to denote like parts throughout the several figures.

In the drawings:

Figure 1 is a top plan view illustrating wall sections having the form boards disposed thereover and with the clamping devices in use and,

Figure 2 is a composite perspective view of the brace members.

Referring specifically to the drawings, the numeral 5 designates preformed concrete block walls that are spaced apart as indicated and with the walls being arranged at a right angle with respect thereto. Disposed upon the outer sides of the walls 5 to extend for the full height of the walls, are outer form boards 6, vertically reenforced by conventional battens 7. An inner form over laps the inner surfaces of the walls 5 and comprises a 2 x 6 timber 8 and a 2 x 4 timber 9, each being joined together by nails or the like. The forms 8 and 9 constitute a corner form and with the forms 6, providing a vertical void for the full height of the walls to receive a poured concrete column 10.

Disposed in clamping arrangement against the battens 7, is an outer clamp device 11, formed of angle irons and embodying right angularly disposed leg portions 12 that intersect each other and extend beyond the point of in- -tersection as indicated at 13. The legs 12 are welded together at their point of crossing, forming a normally n'gid right angle brace. Diagonally arranged angle braces- 14 are welded at their points of connection of the legs 12, and also welded with respect to the extensions 13. The outer ends of the braces 14 are rigidly connected together by an angle iron 15. The vertical flange 16 of the angle iron 15 is apertured intermediate its length for the reception of a tie rod 17 and the vertical flanges 12 of the legs 12 are likewise apertured at their point of intersection for the passage of the rod 17. The brace 11 has its flanges 12 inwardly arranged so that the brace may have a flat bracing engagement against the battens 7.

An inner brace, indicated as a whole by numeral 18 is adapted to have the clamping engagement against the form timbers 8 and 9. The brace 18 is likewise formed of angle irons and comprises a pair of right angularly disposed arm portions 20 and a diagonally arranged connecting iron 21. The apex formed by the connection of the arms 20 is apertured at 22, While the vertical flange 23 of the angle iron 21 is apertured intermediate its length for the passage of the tie rod 17. The tie rod is threaded at its opposite ends as at 24, for the reception of clamping nuts 25. The form boards 6 at their meeting edges and the form members 8 and 9 are diagonally apertured also for the passage of the tie rods 17 and whereby the tie rod will pass diagonally through the void for the corner column 10.

In the use of the device, the form boards 6 are fastened with respect to the battens 7. At predetermined points in the height of the form boards, the meeting edges are drilled diagonally and the form boards disposed in overlapping relation to each other and overlapping relation with respect to the Wall sections 5. The inner form members 8 and 9 are then connected together and disposed Within the corner formed by a the wall sections. The outer form braces are then engaged upon the battens 7 so that their flat flanges engage the battens. The forms 11 are disposed at predetermined points throughout the height of the form boards. A tie rod 17 is then extended through the apertures formed in the brace 11 and the aperture formed in the meeting edges of the form board are extended diagonally through the void to engage the apertures of the form members 8 and 9. The inner brace 18 is then again engaged upon the inner extension of the rod 17 and a nut 25 threaded thereon, while a nut 25 is threaded upon the opposite end of the rod. Adjusting the nut with respect to the rod firmly pulling the clamps in opposed relation, firmly anchoring the form boards in their respective overlapping relation With respect to the Walls 5. It has been customary to employ at least one of the clamping assemblies throughout the height of the forms for the column. While not shown, it has been found desirable to dispose a section of tubular cardboard or the like over that area of the rod that extends through the void and whereby to facilitate the removal of the rod after the concrete has hardened.

It will therefore be apparent, that a very simple and highly effective clamping means has been employed to simultaneously clamp inner and outer form boards against the adjacent ends of preformed wall sections. The device is quickly installed and quickly removable, thus greatly simplifying the assembly and clamping of form boards that constitute the form for pouring a corner column. The structure is cheap to manufacture, strong, durable and highly effective for the purpose stated.

It is to be understood that the invention is not limited to the precise construction shown, but that changes are contemplated as readily fall within the spirit of the invention as shall be determined by the scope of the subjoined claim.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

Clamping means forform boards that are disposed in overlying'relation to the terminal end portions of right angularly disposed wall sections, the form boards being also right angularly disposed and embodying outerand inner forms and whereby the forms provide a vertical void for the pouring of concrete to form a corner column, the bracing means embodying outer and inner braces that are in opposed relation to each other, the outer brace embodying a pair of overlapping angle irons that are connected together to be disposed at a right angle with respect to each other, the arms being extended beyond their point of overlap, an angle iron connected with the extended ends of the arms and angle iron brace means between the extended ends of the first named arms and that are connected to-the extended ends of the arms and also to the arms intermediate their length, the inner brace embodying a pair of connected right angularly dis- .4 posed angle irons and an angle iron connected between the terminal ends of said arms, the arms of the outer brace adapted to simultaneously overlie the right angularly disposed outer form boards and the inner brace adapted to simultaneously overlie the inner form boards, a tie-rod that extends diagonally through the outer brace and the inner brace and to span the void for the column diagonally, the opposite ends of the tie-rod being threaded for the reception of clamping nuts and whereby the form devices are shifted in opposed relation to the form boards for securely clamping. the form boards against the inner and outer faces of the wall sections.

References Cited in the file of this patent UNITED STATES PATENTS 953,722 Taylor Apr. 5, 1910 2,776,464 Stewart Jan. 8, 1957 p FOREIGN PATENTS 25,973 Australia May 18, 19.31

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