US2845683A - Structural form - Google Patents

Description

Aug. 5, 1958 B. E. WINEGAR STRUCTURAL FORM Filed Aug. 3. 1954 INVENTOR ATTORNEYS United States STRUCTURAL FORM Burnell E. Winegar, Evansville, Ind.

Application August 3, 1954, Serial No. 447,627

1 Claim. (Cl. 25-118) The present invention relates to a structural form used in the construction of concrete foundations, curbings and the like. The invention relates more particularly to a structural form which is easily and accurately assembled and which provides uniformly finished surfaces.

In the construction of the modern prefabricated houses, for example, it has been the custom to utilize wooden forms or channel sections for pouring the concrete foundations. The use of the wooden forms or the channel sections proves objectionable because time consuming squaring and leveling is required for assembling to effect the total rectangular area necessary for a house foundatron.

The novel structural form disclosed herein permits fast, accurate and uniform assembling, resulting in great advantage over the other types of forms. novel structural form comprises an outer form section and an inner form section, the inner form section adapted to removably engage the outer form section by means of connecting members secured to the inner form section. Trussing provided along the outer form section permits the use of lighter weight materials than has been heretofore possible with other types of forms.

For forming the foundation of a conventional prefabricated house, for example, a series of assembled sections of such forms is employed. Disposed along the outer and inner form sections are sleeve type adjustable leveling members for leveling the structural form for any type of terrain. Square corners are assured by preassembling outer form sections by welding, for example.

The present invention has, therefore, as a principal object the provision of a structural form which permits faster squaring, leveling and assembling than has been possible heretofore with conventional types of forms.

A further and more general object of the present invention is to provide a structural form which is easily, accurately and uniformly assembled.

Other objects and a better understanding of the invention will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which Figure l is a plan view of a corner portion of the structural form showing it assembled for use;

Figure 2 is a view of the structural form in cross-section, taken at line 22 of Figure 1; and

Figure 3 is a detailed view of the structural form taken in side elevation showing the joinder of the outer form sections.

For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings, and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the inventions as illustrated therein, being contemplated as The applicants 2,845,683 Patented Aug. 5, 1958 would normally occur to one skilled in the art to which the invention relates.

Referring now to Figure 1, Figure 2 and Figure 3, sections of structural form are shown comprising an outer form 10 and an inner form 11. The outer form 10 and the inner form 11 have upper flanges 10a and 11a and lower flanges 10b and 11b, respectively. In the present embodiment, outer form 10 and inner form 11 are made from #12 gauge steel.

Secured to the upper flange 11a of inner form 11 are connecting members 12. A cap screw 12a and nut 12b are provided for removably engaging the connecting member 12 to the inner form 11, the cap screw 12a preferably being welded to the upper flange 11a of the inner form 11 and extending through a slot formed in one end ofconnecting member 12. The other end 13 of connecting member 12 is adapted to conform to and hook around the upper flange 10a of outer form 10.

Attached to upper flange 10a and lower flange 10b of outer form 10 are support members 14 and 15, respectively. Support members 14 and 15 are secured to horizontal support member 16. In the preferred embodiment, the support members 14, 15 and 16 are conventional pipes, the support members 14 and 15 being welded to horizontal support member 16 and to the upper flange 10a and the lower flange 10b of outer form 10. The trussing design formed by support members 14 and 15 together with horizontal support member 16 makes the formparticularly adaptable to use of. light weight materials.

Welded or otherwise secured to the horizontal support member 16 is a sleeve 18 through which a leveling member or stake 17 passes. A hex nut preferably welded onto sleeve 18 is provided with set screw 19 so that leveling member or stake 17 may be tightened into any desired position. Sleeve 21 is welded or otherwise secured through member 22 to the lower flange 11b of the inner form 11. Leveling member or stake 23 passes through the sleeve 21, and a hex nut is provided with set screw 24 for tightening the leveling member or stake 23 into position when the desired level is effected. Several such leveling assemblies are provided on each inner and outer form section.

Figure 3 discloses the arrangement by which the outer forms iii are joined. At the end of each section of outer form 16, an angle or flange 25 is provided which is adapted to receive nuts and bolts 26. In the preferred embodiment, the angle or flange 25 is welded onto the end portion of the outer form 10. Tapered dowels or projections 27 are welded preferably onto one of the set of angles 25 and are provided to assure accurate joining of the sections of forms. Apertures 27a are provided in the other angle 25 which receive projections 27 and thereby cause continuous sections of outer form to become aligned.

At the end of each section of horizontal support member 16, a plate 28 is provided to receive nut and bolt 29 for joining horizontal support members 16. The outer forms iii are preassembled by welding at 30, for example, to provide a rigid corner section. Inner forms 11 engage each other at the inside of the corner section at 31 and may be prewelded, if desired.

In use, and described particularly in connection with forming the concrete foundation of a prefabricated house, sections of outer form 10 are aligned by projections 27 and joined together by means of nuts and bolts 26. Horizontal support members 16 are joined together by means of nuts and bolts 29. The outer forms are leveled with a transit, for example, at each of the four corners and necessary adjustments are made by set screws 19 in sleeves 1.8 on leveling members or stakes 17.

After the outer forms 10 are joined and leveled, a

trench is dug for the concrete. In our example, the trench is about 8 inches wide and 30 inches deep. Sections of the inner forms 11 are hooked over the upper flange 10a of the outer form 10 by means of connecting members 12.. Leveling members or stakes 23 on the inner form 11 are adjustedwhere necessary by set screws 24. The concrete is. poured into the trench at opening 32.

Frorn the preceding description of the applicants novel structural form, it" should be apparent that by utilizing the invention foundations, curbings and the like, can be rapidly and more uniformly constructed. The form is susceptible to changes in material and dimensions. For example, the height of the inner form 11 may be of any desired length so that the lower flange 11b rests on or ofi the ground. For specialized applications, inner form 11 may have any desired shape in side elevation other than the inwardly slanted wall shown in the present embodiment. Moreover, an optional extension may be provided on the lower flange 10b of outer form 10 in a downward direction'to accommodate certain changes in terrain. Similarly, for certain applications, support member may be disposed, for example, at a right angle with respect to the outer form 10 and support member 14 correspondingly changed. Thus, the above description should be considered as illustrative and not as limiting the scope of the following claim.

I claim:

A structural form comprising an outer wall section having upper and lower horizontal flanged portions, said upper horizontal flanged portion having a downward portion and said lower horizontal flanged portion having an upward portion, an inwardly slanted inner wall section having upper and lower horizontal flanged portions, said lower horizontal flanged portion having an upward portion, a plurality of connecting members extending between said upper horizontal flanged portions of said outer wall section and said inner Wall section, said connecting members adapted to be removably attached to said upper horizontal flanged portion of said inner Wall section and to hook around said downward portion of said upper horizontal flanged portion of said outer wall section, said inner wall section being hung on said outer wall section by means of said hooked ends of said connecting members, said connecting members maintaining said outer and said inner wall sections in substantially parallel spaced apart relationship, laterally extending support rods rigidly connected to said downward and said upward portions of said upper and said lower horizontal flanged portions of said outer wall section and extending and rigidly connecting to a horizontal rod, said horizontal rod disposed substantially parallel to said outer wall section and spaced apart therefrom, adjustable outer wall section leveling means attached to said horizontal rod, and adjustable inner wall section leveling means attached to said upward portion of said lower horizontal flanged portion of said inner wall section.

References Cited in the file of this patent V UNITED STATES PATENTS 1,349,340 Hotchkiss Aug. 10, 1920 1,482,700 Ratzesberger Feb. 5, 1924 1,672,760 Heltzel June 5, 1928 1,700,798 Heltzel Feb. 5, 1929 1,839,286 Wolf Jan. 5, 1932 1,922,584 Heltzel Aug. 15, 1933 2,492,502 Salmon Dec. 27, 1949 7 2,611,169 Torrelli Sept. 23, 1952 2,663,925 Yates Dec. 29, 1953 2,764,798 Hufi Oct. 2, 1956

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