US2530102A - Portable foundation wall form - Google Patents

Description

95 R. R. VON BAMPUS 2,530,102

PORTABLE FOUNDATION WALL FORM Filed April 29, 1948 4 Sheets-Sheet 1 Q a0 fizzy 1 f q i p 6% 1 l x. 7 fi 41a IN VEN TOR.

K161569522) ,2 VaN 5111mm:

R. R. voN BAMPUS PORTABLE FOUNDATION WALL FORM Nov. 14, 1950 4 Sheets-Sheet 3 Filed April 29, 1948 Q 0% EN mov wow my E wk ABN JNVENTOR. 316359930 11 V01! aeMPus BY Nov. 14, 1950 R. R. VON BAMPUS 2,530,102

PORTABLE FOUNDATION WALL FORM .Filed April 29, 1948 v 4 Sheets-Sheet 4 INVEN TOR.

19109230 1?. VON BAMPKS Patented Nov. 14, 1950 PORTABLE FOUNDATION WALL FORM Richard R. von- Bampus, Ringwood, Ill. Application April 29, 1948, Serial No. 23,962

1 Claim. 1, This invention relates to a portable foundation form, and particularly to adetachable foundation casting form capable of being taken apart and transported to. a, given location and there set up for pouring a concrete foundation.

An important object of the invention is to pro.- vide a foundation casting orv pouring form which is adapted to be used repeatedly for pouring any number of concrete foundations.

Another object is to. provide an adjustable foundation form of the indicated character adapted to be used for makingvarious sizes and shapes. of foundations of cementitious materials.

A further object is to have such a foundation form which has facilities for stripping the forms orform. sections from. the foundation and leaving the latter in such excellent condition that the exterior surfaces thereof may be used without further treatment.

It is even an object of this invention to have a portable foundation form mounted on a group of supporting wheels allowing the entire form to be rolled from one foundation or basement, from. which the form sections have just been. stripped, to a nearby site for the next foundation or basement to be poured, without dismantling the apparatus.

It is also an object to provide a foundation handling the same and which is readily adjust able in location to set it. into accurate position.

Other objects and specific features of the invention will become apparent from the following description when considered. in connection with the accompanying drawings, in, which:

Figure 1 is a plan view of portable. foundation form made according to the invention and em.- bodying the same in a practical form, parts being broken away to reduce the View;

Figure 2 is a side elevation of thesame foundation form as seen from the right. in Figure 1;

Figure 3 is a transverse section of a, foundation wall made by the pouring or casting form of the invention and showing portions thereof in position on both sides of the wall, the latter a Figure 6" is a vertical section throughthe foundation wall at a point where a door frame appears, it being an enlargedvertical sectionon line 6+6. of Figure 8;

Figure '7 is a fragmentary plan view of the foundation as seen from the top and illustrating a. door frame and a window frame in posi.- tion in said foundation;

Figure 8. is a front elevation of the, samefrag! mentary portion of the foundation showing the.

door and window frames in position;

Figure 9 an enlarged fragmentary transverse section taken on line 89. in Figure 8;

Figure 10. is a fragmentary view of detail concerning the form sections and a tie rod holding the same together;

Figure 11 is. an enlarged section taken on line il+il in Figure 1;

Figure 12 is avfragmentary perspective View of a modification of the-form of invention shown in, Figure 1;

Figure 13 is an enlarged vertical section taken on line l3-l.3 in FigurelZ; and

Figure 14; is a fragmentary sideelevation. of the metal frameof Figure 13.

Throughout the various views, the same reference numerals indicate the, same or like parts.

In the building industry, several formidable problems confront the builder, especially if he contemplates building a. number of houses, or other structure upon concrete foundations. Even though the latter may be of the shallow type or buildings which have no cellars or basements, the matter of providing. proper forms for pouring concrete to make the foundations has alwayspresented a considerable problem which yet remains to be solved.

The first problem is the cost of the forms. This is often. prohibitive if the buildings to be erected are all dilferent. In case several houses or other buildings are to be substantially the same in form, as far as the foundation is concerned, it sometimes does pay to make a set of forms suitable therefor. Especially would it be plausible to have forms for a large number of houses or buildings which will have substantially the same type of foundation, even though they may vary in over-all dimensions, so long as. they are relatively free from offsets and. other irregularities.

After carefully considering this problem. and others related tov the same, I have found it, quite, feasible to design a special foundation form which is both adjustable and portable, as well as readily detachable from the foundation when the concrete or other-cementitious material has set suf- 2,530,102 '"yjj 3 ficiently to stand without support, as will now be set forth in detail.

Hence, in the practice of my invention, and referring again to the drawings, a carrier frame, generally indicated at l5, consists of four corner structures l6, l1, l8 and 19. Each corner structure is carried by a pair of wheels 29, 2! These wheels are mounted on a shaft 22 which is carried in a frame structure 23. The frame structure pivotally and steerably supports the projecting end 24 of a frame member which is preferably an I-beam or the like. The wheel assembly 29, 2|, 22 and 23 is spaced sufliciently below the beam extension 24 to allow swiveling of the assembly for steering when the carrier frame is to be rolled to another excavation. The steering is effected by maneuvering the wheels. At right angles to the I-beam 25 is connected 2. second I-beam 26 by means of angle plates 21, 28 which are welded to beam 25, but riveted or screwed or otherwise releasably secured to the I-beam 26, as at 29 for example.

In similar fashion, the corner section 6 includes the two beams 36, 3|; the corner section H, the beams 32, 33, and corner section |8, the two beams 34, 35. All of the corner beams are secured together in a fashion similar to beams 25 and 26 of the corner section I9. In the corner sections l6, I1 and N3, the beams 39, 32 and 34 project beyond their correspondingly associated beams 3|, 33 and 35. The projections 36, 31 and 38 are supporter by their associated wheels 26 and 2| in each case. Four sets of wheels result, one at each corner, and together support the entire frame l5. In order to connect the mentioned corner sections together to form a coherent frame, the two beams 26 and 33 of corner sections 9 and [1, for example, are secured together by inside and outside channel members 39, 39, as best shown in Figure 11. i

Equidistantly spaced detachable bolts 49, 46 are used to secure the channel members in place in such fashion that the I- beams 26 and 33 may either meet at their common junction indicated at 4|, or be spaced apart various distances according to a multiple of one of the distances between any two of bolts 40. In similar fashion, the two beams 39 and 32 of corner sections i6 and I1 are detachably secured together. They may either meet as shown at the intermediate junction 42 or be separated at stepped distances. The construction referring to the connection between the above-mentioned beams 26, 33 and beams 30, 32, also holds for the beams 3|, 35 interconnected across their common junction 43 and for the beams 34, 25 connected across their intermediate junction 44. Although the holes in the beams are not shown, they are readily understood upon inspection of Figure 2 which shows the spacing of bolts 40. The latter pass not only through the channel members 39, 39, but also beams 26 and 33. In similar fashion, inner and outer channels connect the other beams 36 and 32, 3| and 35 and 34 and 25. The frame just described is shown as occupying a minimum area. It may be made larger as desired by releasing bolts 46, 40 on opposite sides of the carrier frame and extending the beams. When the beams have been separated to the desired positions, the bridging channels are locked to the beams by tightening the bolts. In this way, the frame may be made longer, wider, or both. By such adjustments, various sizes of foundations may be built. The size of the carrier frame is limited only by the strength of its '4 individual members required to support the foundation form and by a consideration of portability.

In order to accommodate a pair of nested inner and outer form sections, each corner section of the carrier frame is provided with a supporting tower generally indicated at 45, 46, 41 and 48. Each tower is a trapezoidally-formed frame consisting of four I-beams Welded togetherand disposed obliquely on the two beams of the respectively associated corner sections of the carrier frame. Thus, the tower 48, for example, includes the lower relatively long horizontal beam 49 secured by angle plates 59, 5| to beams 25 and 26, the inclined upwardly-directed side beams 52, 53 surmounted by'the short horizontal beam 54, and an exterior inclined supporting beam 55 secured at its upper end to beam 54 and at its lower end to beams 25 and 26 by angle plates 56 and 51.

Preferably, the towers are reinforced at their lower corners by plates 58 and 59, etc., welded to horizontal beam 49 and post 52 and similar plates 60, 6| welded to the same horizontal beam 49 and post 53. At its upper end, the supporting beam 55 is secured to the horizontal short beam 54 by means of angle plates 62, 63. Suspended from each of the upper beams on the four towers, as for example from beam 54, is a chain hoist including a block 64 with a chain 65 terminating in a hook 66. As the other three towers are exactly the same in all details, the references applied to the tower generally indicated at 49 may be considered as also applying to each of the towers 45, 46 and 41.

The mentioned hook 66 of the tackle block 64 suspended at 61 from the upper horizontal beam 54 engages in an eye member 68 of a radiallydirected carrier bar 69 which is releasably secured at the upper corners of an inner form 10 and an outer form H. The inner form 10 includes a group of panel sections 12, 12 forming one side of the form and groups of similar panel sections 13, 14 and 15 constituting the other three sides of the same form. The two corner sections 16, 11 are preferably permanently secured together and reinforced by a triangular plate 18 and the plate in turn is directly secured to the mentioned supporting bar. The other corners of the form are similarly constructed. Before discussing the details of each of the sections 12, 13, 14 and 15 of the inner form, it may be mentioned that the outer form H likewise consists of similar panel sections 19, 86, Bi and 82, and corner sections 83, 84. Carrier bars 85, 86, 61, corresponding to the bar 69, are similarly supported by tackle from the upper portions of towers 45, 46 and 41, as just described in connection with tower 48.

Each of the panel sections 12, 13, 14 and 15 of the inner form 19 are similarly formed. As shown in Figures 1 and 3, each panel includes a lower horizontal angle bar 88, an upper horizontal angle iron 89, a plurality of intermediately spacedupright angle members 90, 99 and at the ends similar angle members 9|, 92. The end angle members 92 are secured to the next adjacent end angle member of the next section at 9| by means of bolts 93, 93. To the inside face of each panel section is secured a panel 94 of suitable material, for direct contact with concrete, such as waterproof plywood, plastic, or light sheet metal like aluminum. In similar fashion, the outer form 1| includes a series of panel sections 19 as already mentioned and shown in larger detail. in Figure. 3;. Each'section includes a. lower horizontal angle member 95, a similar upper. hor zontal, an le. memb r and intermediately spaced upright angle; members 97!, 91. The end; angle; memb rs. 911 and 99. f j cent panelseotions re; sec red; eth by bolts, I99, I:9Il;.. Each group, of angle members. 97, 99, and 99 with lower and. upper angle membersv 95, 96; thus constitutes a, metal frame to which is securedon its inner faeea panel L9! y means of screws. or the like. n t how h panel, imilar o. pan l. .4.: which spr v de on each section of the inner form [9 Variations in the constructien of these panels are, of course, possible so lon as. the, necessary reinforcement is provided.

It will be apparent from; the above description that the forms [9 and; II; may be reduced or increased in size by the removal or the addition of panels. By so doing, walls; of smaller or greater circumference may be built. Provisien qf shorter or longer carrier bars. andtie rods will likewise provide for differeniiwall thicknesses.

As best seen inFigu-res 2,3 and. l 0, each panel has a group of tie rods thrust through the same and which extends from the outerform panels to and through the inner form panels. That is, they extend from panels of form II through the panels of form Ill. This is, cheated by the provision of a plurality of ellertures in the upright angle members 91, 98,, 9.9-and 99, 9I, 92. Through the mentioned apertures [92 I02 are inserted tie rods I93, I93, there being sufficient rods provided in each form section or panel to insure the maintenance of the space between the forms and eliminate bulging when; the concrete is, poured. Each rod is; inserted; up to its head I94 engaging against the angle member 91, for example, while upon the far side, that is, through the form panel I2, beyond the side of the opposite upright angle member 99, a pin I95, is fitted into a hole I99 in the tie rod. The tie rod also has a further hole spaced a distance beyond aperture I96 at It] for inserting a tool and gaining purchase sufiicient toforce the opposite panels on the inner and outer forms toward each other to permit easy insertion of the pin I05. It may be noted that in view of the fact that the outer form II slopes-inward toward the top and the inner form 59 slopes outward toward the top, a

tapering wall I98 may be poured between the two 7 forms with the tie rods I93, I931 holding the forms from expanding or bulging when the con,- crete is poured therebetween. Obviously, the uppermost tie rod I93 will be shorter than the low est and the spacing of the holes I96, IIll frornthe,

head will vary with the length of the rods. However, in each case these rods serve the same; purpose. As shown particularly in. Figure 2, each section or panel of the form II, is preferably reinforced against distortion by a pair of diagonally arranged rods I98 and, I99. They are secured at the upper corners formed by upper horizontal angle member 96 and upright end angle members 98 and 99 and also at the lower corners formed by the same latter two angle members and; the lower horizontal angle member 95. Thus, each section 19 of the form II, may be made quite rigid despite considerable strain imposed thereon. The bolts I I9, which secure the end angle members 98' of one section to the next adjacent angle member 99 of the following section, are removable. When the bolts are removed the sections can be separated and loaded on a truck when. the entire apparatus isto be dismantledfor long-dis- 'tance transportation-., The. ieatures of. the; diagi-l onally arranged rods I08 and I09 may also be applied to. the panels or form sectionslZ: of; the inner form- 'II], as such construction, is; known in other branches: of the art.

Angle members or lugs I II and I I2; are secured. to the end sections qf the. Quter form; II, one; at. each corner, for apurposeto be explained hereinafter. Similar angle members, not; shown, are provided at the corners of the inner form, III. In addition, other angle members are arranged; to,

be detachably secured to theforms at any desired,

point. or points between the corner members.

It is important, that the entire form be square and freeof distortion so that the diagonally ops. posite corners will, remain at. accurate distances from each other and: that. all the angles at. the corners will remain square. This is effected by aninternal squarin unit, generally indicated at I13, which is disposed within the inner form III. This squaring unit consists of four angularly disposed pairs ofI-beams, as for example, beams IM, I. I5 secured together to form one pair; H6,

III to. form a second pair; beams H9, H9 toform a third pair; and beams I29, IZI to forma fourth pair. These corner or angular pairs are all bolted together at I 22, I23, I24 and IZS- to form a right-angled quadrilateral unit. At the junction in the corner between members [It and I I5 is secured a tubular radial member I26. Similarly, in the corner junction between members- I Iii-and Ill, a second tubularreinf-orcing member I2? is secured. In the respectively opposite corners between members H8 and H19, is fixed a rod I28 and inthe remainin corner between members I29 and I2I is fixed a second rod I29. These rods I28 and- I29 extend into the tubular members I26 and I2-l'. Spaced apertures I39 ex-..

tend not only through the tubular members, but. also through the rods to receive pins I3I and thereby secure the whole squaring unit into a, rigid form. Distortion is eliminated due to the diagonal positions of the tubular members I26- and I21 andthe rods. I28 and I29 connected thereto. In order to ensure the rigidity of the, corners, the reinforcing plates I32 and I33, I34, I35 are bolted or otherwise detachably secured to the meeting beams H4, H5, etc., in each pair, as

is in readiness for pouring the concrete, the latter is then introduced between the forms until the pro-per level is reached and then the concrete is I allowed to set until it can stand without lateral support. The foundation form is then ready to be removed from the wall and moved to another lo-' cation for reuse. Pins I05 are tapped-out of the tie rods I93. If necessary, the interior squaring; unit II3is removed in order to provide access to all of the tie rods within the inner form.

When the pins have been removed the; tie rods; are all pushed outwardly and; finally pulled from. the outer form H, leaving elongatedholes in. the. a concrete, as indicated at I:3'I,,. Illa in! Figure {l the wall I08 being otherwise entirely solid and smooth.

As soon as all of the tie rods have been removed, a heavy jack is placed under each of the angle members I H and H2 on the inner form Ill and the latter is raised slightly upwardly away from the inner face of the set concrete wall. Jacks are then placed under each of the angle members on the outer form II and the latter is raised slightly upwardly away from the outer face of the set concrete wall. By initially raising the forms with jacks, the residual adhesion between the forms and wall is broken and the forms may then be raised by the tackles until they clear the top of the wall I08. The additional angle members arranged to be detachably secured at positions intermediate the corner members are for the purpose of being able to apply jack pressure at any point on the forms which may be adhered more tightly to the concrete than at other points. Inasmuch as the surface of the panels 94 and IEII are smooth and non-porous and in addition are inclined toward the top, they will part easily from the wall and leave a smooth finish thereon. As soon as access is had to the wall, the holes I31, I31 are filled with caulking compound and sealed at the ends with cement so that they no longer appear, as indicated at I38 and I39. The result is a wall having the two sloping sides I40, I4I with a fiat top I42. The wall surfaces may then be treated to provide additional smoothness, coloring, or waterproofing, as desired. Waterproofing of the outer surface of the wall below the grade line is important and is usually accomplished by the application of an asphalt compound.

It will be observed that a tapered Wall results from the use of the sloping inner and outer forms described above. Such a wall, beingwider at the bottom than at the top, provides its own integral footing at the base. This is not the case of the usual wall construction. In the latter type a footing is first poured and allowed to set. Before being fully cured a Wall is cast on top of the footing. As a result, the uncured footing frequently fails because of the weight imposed by the cast wall. Also, relative movement between the wall and footing sometimes results from the lateral pressure exerted by the outside earth. These objections are not experienced in the integral wall and footing obtained by the use of the device of this invention.

When viewing another portion of the concrete wall I43, as shown in Figures 7 and 8, it may be noted that a door casing I44 and a window casing I45 are accommodated in the wall so as to be incorporated therewith. In order to dispose these casings in proper position prior to pouring, they are so located that two of the highest rods I03 will pass through holes I46 in the sides of the door casing and'through holes M! in the window casing M8. The sides I49 of the door casing have tie rods passing through intermediate holes I50. The lowest tie rods are simply located beneath the base II of the same door casing at I52, etc. The tie rods that would normally pass through approximately the vertical central portion of the door opening and also the window opening may be omitted. Both casings are thus directly supported by tie rods and are also definitely located for the pouring of the wall. When the wall has set sufiiciently, the tie rods are pulled either through or away from the casings. As the wall tapers upwardly so that it is narrowest at the top I42, the casings obviously widen toward the 8. bottom. It will be seen that the bottom of the door casing at I5I is wider than the top I53. Within the wall, the base layer of the floor at I54 supports the floor proper I55 which is immediately below the level of the bottom member I5I of the door frame. Although the door frame widens toward the bottom, the door lamb and other portions of the frame, will, of course, be constructed as a normal door frame which is of the same width from top to bottom.

If we now refer to the enlarged section of the side of the door frame shown in Figure 9, it is readily seen that preferably the casing I49 is longitudinally divided into two equal sections I51, I5! secured together by a concealed or reinforcing frame member I58 embedded in the wall I43. The tie rod hole I50 passes through both casing sections. The casing is divided to eliminate diificulty in obtaining a board as wide as the bottom portion of the casing. In addition, the division of the easing into the two sections allows and facilitates the trimming down to size for fitting the casing accurately to correspond to the intended size and form of wall I43.

In view of the fact that the wheel assemblages 20, 2|, 22 and 23 may be steered in any direction, it is possible to roll the entire assemblage of the apparatus from one structure just completed to the next excavation, even though the latter may not be directly alongside the one just completed. It is merely necessary to tow the structure by means of a truck or tractor and. to direct the wheel assemblages in the proper direction by mechanical means not shown. The assemblage is maneuvered until accurately located over the excavation to be provided with the new concrete wall, when the tower blocks 64 may again be manipulated to lower the inner and outer forms 10 and II into place for a new cycle of operation.

From the foregoing, it is evident that with the use of the apparatus it is possible topour foundation walls, basement and cellar walls, and the like of various sizes. This is readily possible by merely releasing the bolts 40 holding the inner and outer channels 39, 39 on the beams 33, etc., of the carrier frame and then replacing the bolts 40 in new positions wherein the channel members virtually form bridges or spacing members for the longitudinal beams of the carrier frame when spaced apart various distances according to the required increase in size. When the sizes of the foundations are to be increased, additional form sections 12 and T9 are added to the sides to be lengthened of both the inner and the outer forms I0 and TI, this manipulation being so obvious as not to require specific description. In correspondence with such increase in size of the inner and outer forms, the squaring unit H3 may be correspondingly enlarged by releasing the bolts I22, I23, I24 and I25, and after sufi'iciently enlarging the unit H3 to fit the inner sides of inner form I0, these bolts may be replaced, the pins I3I being also removed from their holes I30 and replaced in new holes in the tubular members 26, I 2? and rods I28, I29 to correspond to the new size of the unit H3.

Extra large wall enclosures may be formed by blocking out an end wall to form a U-shaped structure when viewed from above. A second U-shaped structure may later be poured in abut ment so that the open ends of both are in alignment. This would efiect an enclosure approximately twice the length of a completed Wall formed normally-by use of the inner and outer diagonal bars I and I15.

em-o2 9 terms. It is readily-apparent that the "openended enclosures may also abut at any desired angle.

will be noted that the foundation form described above 'pr'ovides inner and outer forms which may singlyor together be-raised and lowered by thefchjain hoists'ca'rrie'dby the carrier frame. W lfr'en the forms are resting within an excavation it is possibie to raise-one relative to the other a sufficient height to expose the sloping casting surfaces to cleaning operations and for the unrestricted positioning 'of "door and window frames and tie rods. If desired, reinforcing rods "for the concrete may also be positioned at this time. When only one .of the forms is to be raised, the carrier bar 89 is disconnected from the other form.

In the form of the apparatus already outlined, tie rods are used to'hold the inner and outer forms properly and evenly spaced apart and to prevent the same from expanding individually at any point when the concrete is poured between the two forms. In addition to being secured by the tie rods, both forms are secured together at the corners by means of the through the space between the forms and through'the wall poured between said forms.

The carrier frame in this form of construction includes overlapping channel members I59,

I59 at each side. A similar arrangement of channel members, "of which only the portions IBI, I52 are shown, is provided at the ends. The side and end channel members are secured at right angles by means of angle plates I63, in the same manner as angle plates 21, 28 were described as being secured to beams and 25. In order to allow for expansion or reduction in size for various sizes of foundations, bolts I54 may be temporarily removed and holes I95, I66 shifted further apart or closer together until they register and the bolts replaced according to the size required. This construction is the same for all four sides of the carrier frame, which, in this case, is generally indicated at I81.

At the corners of the frame, that is, at the ends of the beams IIiI and I92, etc., are channels I68 and I69 reinforcing the extensions I19 and HI. A wheel assembly may be mounted at each corner as already described in connection with carrier frames I5 in Figures 1 and 2 which require no further description here, inasmuch as the construction is well understood and, of course, holds in equal manner for the present frame. At each corner, as for example upon the beams I59 and I6I, are erected a pair of posts I12 and I13. These posts are surmounted by a horizontal top member or tackle beam lid reinforced by The posts I12 and I13 are further secured in erect position by the inclined angle beams I11 and I18 which are detachably secured at their upper ends to the posts and at their lower ends to the upper part of channels ISI and IE8. At the junction of the channel members I59 and I5I, forming the corner, an angle plate I19 is preferably boltedor otherwise detachably secured to the members 7 I11 and I18 and further secured to the channel members I59 and I5I to form a firm anchorage for the tower. From the upper beam I14 of the tower is suspended the tackle block I88 in conventional manner with the tackle chain I8I hav- .the suspension eye I83 upon a loose carrier 'bar I84 from which 'boththe inner form I'85'and the outer form I85 are suspended. For effecting" this suspension, the upper edge of form "I85'ii's provided with two bridge members I81 and 1 88. The upper edges of form I86, that is,'the outer form, are similarly provided with bridge members I89 and I95. Beneath the four bridge members, the carrier bar 184 projects at both ends thereof in slidable manner so that maneuvering of either form is possible independently of the other. Freedom of movement is possible because of the fact that the carrier bar I84 is not definitely secured to either form, but merely holds the same in suspension. The bridge members may be secured to the upper edges of the forms by means of bolts or the like, or by any other means known in the art, as such means form no part of the present-invention as such.

Inasmuch as no ties or tie rods are used in the present form or the apparatus to pass direct- ,ly .through the wall ,to be poured,- a special supporting tie structure is provided; The panels or sections of the forms illustrated are entirely like those already described in Figures .1 and 2 Figure 12 is merely. a fragmentary View of the entire carrier frame with its appurtenances and inner and outer forms, there-jare shown only portions of the latter and but one of the tie structures. In actual operation, as many 't'i'e structures are provided ,as will beflrequired to effect the same results as with the use of tie rods. I r

The tie structure of this modified 'formo'f construction, which eliminates the need of the rods, is shown in detail in Figure 13. The angle members I9I. and I92 of the inner and outer forms make up the panel sections having facing panels I93 and I94 between which a wall I95 is cast. These are similar in construction to the panel sections described previously in the forms shown in Figures 1 and 2. At the bottom ends of angle members I9! and I92 are secured horizontal angle members I96'and I91 and at their upper ends aresecured angle members I98 and I99. A pair of upwardly extending and outwardly inclined tie members 299 and MI are connected at their lower ends to the lower portions of angle members I9I and I92 of the forms by means of pivots 282 and 293. Their upper ends are connected by means of pivots 295 and 296 to a horizontal angle member 294 which is considerably longer than the width of the base of wall I95. This horizontal angle member is attached to the upper ends of the horizontal angle members W8 and I99 by means of anchor members shown as bolts 201 and 208. The resulting structure maintains the upper and lower portions of forms I85 and I86 spaced apart at the predetermined angles and distances intended to constitute the dimensions of wall I95 when poured between the forms. It is evident that the tie structure so rovided in no way penetrates the wall I95 poured between the forms so that the panels I93, I94 of said forms may be entirely imperforate and smooth on the inner sides facing the wall. It is evident that, due to the triangular construction which results between the upright I92, the outer tie member 25H, and one end of the upper horizontal member 294, the lower end of the form will be prevented from shifting either inwardly or outwardly. The same is true of the lower end of form I85 due to the triangular structure which results when the outer tie member 200 is secured at the lower end to the upright I91 and the latter, as well as tie member 200, are secured to the other end portion of the upper horizontal member 204.

When the wall has set sufficiently to stand without support, the forms 185 and I86 are released by removing the bolts 201 and 208. This permits the structures to pivot about the points 205 and 206. The inner and outer forms are then stripped from the cast wall in the same manner as previously described.

From the foregoing, it is evidentthat in the different constructions shown in Figures 1 and 12 substantially the same principles hold.

While the pouring forms and carrier frames have been specifically detailed herein, it is within the purview of my invention to have forms and carrier frames with any number of sides. Thus in the following claim, the number of corner sections and frame sides set forth should be interpreted as meaning any desired plurality :not limited to the form or number specified.

The carrier frame may be completely detached from the inner and outer forms when the concrete has been poured, and may be towed to a new site or excavation and furnished with a second pair of forms and concrete poured therein. This separation of the carrier frame from the forms'may be done as often either as unused forms are available or as forms are ready to be stripped and reused.

While several embodiments of the present invention have been shown herein, it will of course .be understood that the invention is not to be 12 limited thereto since many modifications may be made.

I claim as my invention:

A structure for forming a wall of cementitious material or the like comprising nested quadrilateral shaped forms having a space therebetween for receiving the wall forming material, a pair of bridge members on each form individually secured to an upper edge thereof in spaced relation from a corner, the arrangement being such that a pair of bridge members is provided on each side of the corner and each form supports one of the pair of members, and a carrier bar extending across adjacent form cor ners with the ends being selectively projected through said bridge members either to engage the bridge members of one form or both simultaneously.

RICHARD R. VON BAMPUS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 829,227 Pauly Aug. 21, 1906 854,098 Mann May 21, 1907 1,117,519 Robertson Nov. 17, 1914 1,132,460 Dewey Mar. 16, 1915 1,235,542 Bagby Aug. 7, 1917 1,565,845 Brynoldt Dec. 15, 1925 1,679,040 Lake July 31, 1928 2,378,605 Watson June 19, 1945 2,438,277 Fife et a1. Mar. 23, 1948

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