US1851399A - Form for concrete walls - Google Patents

Description

March 29, 1932. D. F. MILLER 1,851,399

FORM FOR CONCRETE WALLS Filed Nov. 23, 1928 3 Sheets-Sheet 1 March 29, 1932. D. F. MILLER FORM FOR CONCRETE WALLS Filed Nov. 23, 1928 5 Sheets-Sheet 2 I alto b142 March 29, 1932. 3. 1,851,399

FORM FOR CONCRETE WALLS Filed Nov 23, 1928 3 Sheets-Sheet 3 (QM-neuter,

Patented Mar. 29, 1932 PATENT OFFICE nnLBnRT I. MILLER, or BAYI-OR, MONTANA roan FOR CONCRETE WALLS 7 Application filed November 23, i928 No. 3 2 1,3

This invention relates to means for erectin}; walls of Concrete andhas for its object the provision of very simple and inexpensive farms whereby a hollow wall of concrete or 3 similar material fnay be readily erected at a comparatively low cost. The invention is illustrated in'the accompan'ylng drawings and consists 1n oertaln novel features which will behereinafter fully set forth and defined. m p In the drawings "Figure 1 is a perspective view showing the fq'nns in position within and aboutia completed course of a wall,

Fig. ais a similar view showing a partly completed wall with the forms arranged to shape an upper course,

Fig. 3 is a sectional elevation. taken longitudinally of one of the cores, 7

Fig. 4 is a transverse section on the line 4 4 of Fig. 3,

of Fig. :3,

Fig; 6 is an elevation showing door and window frames in place,

Fig. 7 is a section onthe line 7-7 of Fig. 6, Fig. 8 is' a plan view of a' corner showinga slight-modifieat ion, and

Figs. 9,10 and 11 are details showing caps 'which may be applied to the cores.

In carrying out the present invention, there are provided outer and inner side form members 1 and 2' which niay conveniently beplanks of suitable dimensions and having flat opposed surfaces. These formnleni'bers are set on edge in parallel relation and metal tubes 3' are disposed between then] at intervals, retaining bolts 4 being inserted through the tubes and having washers 5 and nuts6. fitted upon their ends against the outer sides of the form members so that by turning the nuts home the several parts will be seeured,as will be understood upon reference to Fig. 4. j

Washers or plates 60 are countersunk in the Fig-1 5 is a transverse section onthe line 55 forms rigid against lateral movement either inwardly or outwardly. At the inner side of the wall to be erected, the inner Ineinbers '2 form a but-t joint at a corner but atthe outer sides one form member 1 has openings through which lugs 7 on the meeting member may rojectand suitable fastening devices as 8, are inserted through the lugsso that the form members will be held togeth r tofretain the concrete while it is setting. On the inner surfaces ofthe form menibersl at the meet: ing points thereof, recesses e may be forined whereby an offset10 will be produced injthe finished wall to impart strength and an at"- tractive appearance to the corner of thewall. The outer form also be more entended or elongated than the inner form'fasshown at 70, and provided with openings 71 for use in extending the wall to adda room to;

existing structure, the retaining bolts being inserted through said openings 71 and" through the openings left in the previously erected wall. The form members may be as long as the wall to be erected but they may; be more readily" handled if cut obliquely between their ends, as indicated at 61...

The forms set up as thus described are sufficient if a solidwall is to be erected, and the" green concrete is poured into the space between the fo'rins and tamped according to the usual practice. After the concrete has set',.the washersb, nuts 6 and bolts 4' are withdrawn, leaving the tubes 3 within the wall. The forms are then raised and placed in position for a second course, and the. op eration is repeated until the wall hasreached the desired height, as will be understood. In setting the forms for an up er course, the lower bolts't are inserted through the upper tubes 3 left in the poured wall, the lo'wertubes" beingwithdrawn' and again used between the side forms. If the tubeslbe coated with pea aflin' o'rsorne siniilar substance before being inner faces of the side formsand the tubes placed in the forms, they rnay'beea'sily with-' 3 abut the same, as shown in Fig. 4,so' that draws afte -meanders has set, the open-r their ends willbe flush withthe wallsa'nd tubes" equal in length to the thickness of the wall may" be used, subsequent cutting of the ends of the tubes being thereby Ina'd'e unnecessary. The arrangement also holds the built in as many courses as necessary to produce a basement of a desired height when the building is to have a basement, the solid wall, of course, forming a base for the superstructure.

The walls of the superstructure will preferably have dead-air spaces or chambers therein'to obtain the benefit of heat insulation which a hollow wall or a wall with deadair chambers possesses, and, for, this purpose, I provide cores 11 whichare supportedby and between the form members 1 and 2, so that, when the concrete is poured into the space between'the members 1 and 2, some part of that space will be found to be occupied by. the. cores and, consequently, hollow portions or chambers will be formedin the concrete, the concrete wall being indicated in the accompanying drawings: by the numeral 12. The cores'include bottom plates 13,

thee'dges of which project somewhat beyond the sides of'the core side members to which they are secured, as shown in Figs. 4 and 5.

vThe two side members of a core each comprises two nearly right triangular sections 110 having their meeting facesdisposed diagonally, as'shown' at 14, and provided in their ends with notches 15 whereby-they may be engaged over upper, tubes 3, as will be understood upon reference to Fig. 3. A plate 16 is disposed over the top edges of the core sections and extends the full length of the core,fand upon the upper side of this plate 16 'are secured cross bars '17 which project beyond the sides of the plate andare adapted to rest upon'the edges of the form members 1 and 2 and may be removably secured thereto in 7 any approved manner. The plate 7 16 should be arranged symmetrically upon thecore with its: edges projecting beyond the sides of the core and alined vertically with the edges of the plate 18; The concrete is tamped around the cores between the side form members and will fit close to the sides of the cores between the projecting edges of the plates 13.and 16 and when the concrete has set and the cores removed,.it will be found that not only is a hollow chamber present in the wall but at the top of said chamber is a rabbeted or shouldered structure 160 adapted to receive and support the plates 13 when a succeeding course is 'to be formed. After the core members, have been disposed between the side forms and engaged with the tubes 3, the plates 13 carrying the core members 110 are forced outward by spreaders, as wedges 130, so as to abut the sides of the recess16 0. The wedges may extend up ward through slots infthe top plate 16, but

'a more convenient arrangement is to suspend I the wedges on lag screws mounted in the, topplates 16. To prevent relative displace ment of the sections 110, lag screws 133 are thenfd'riven vertically through the cross bars 17,th e top plates 16 and the members 110, 7

and the ends of the cross bars are secured to the side form members 1 and 2.

, Some concrete will tend to enter the notches in the ends of the core and fill the same so I vided in oneend to the cap to fit to the tube 3. The space between the ends of the core sections is covered by a cap 21 of similar material and of proper shape and dimensions to "entirely cover the end of the core. It will,

of course, be understood that two or more .coreszmay be arranged end to end to produce a dead-air space extending approximately the full length of the'wall, and caps 22 are pro vided to cover the alined notches in the meet-,

ing ends of adjacent cores. If a glazed ma.- terial be used for these caps, the glazed side being placed outward they may be removed and'used many times. v

After a course has set and the cores are to be removed, theseveral screws are'wlthdrawn and the cross bars 17 and the covers 16 are removed. The several members of the core may then be successively moved-inwardan'd thenij'endwise to be freed of the respective tubes and easily withdrawn. The side formsare then raised and all the parts reset for the formation of another course.

In erecting the wall, door and window openings will, of course, be provided. For this purpose, I provide forms consisting of planks 25 set between the side forms 1 and 2 at the points where the door and window openingsare to be located. These form members have a combined width less than the thickness of the wall being erected but they are so'arranged that their outer. edges abut the members 1 and 2, as shown in Fig.7. Over the inner edges of the members 25 are secured strips 26 forming a groove which the concrete fills to key the parts in position, as

shown in Fig. 7 The elements 26 format shoulder to which the ordinary door oriwin dow frame maybe readily attached.

The dead-airchambers may, of course,be

provided only in the sidelengths of the wall and terminate short of the. corners, as shown in Fig. 1, but, as shown in Fig 8, there may I be a plurality of'ventilating spaces or chamber's 24: which are disposed in parallelism within therespective branches of the wall. andextendintothe corners ofthe same, there- V by obtaining perfect insulation at the corners; 7

as well as in the length of the wall.

claim .Having thus'des'cribed the inventi m-JI:

1. In forms for concrete work, side form members, tubes disposed betweensaidside form lmembers, means cooperating with said tubes tomaintain the side form mernhers in parallelism, cores supported by and between the side form members and provided at their ends with notches to engage said tubes, and caps fitted over the ends of the cores to cover said notches.

2. In forms for concrete work, a core comprising side members, rests therefor supported in seats provided in a finished course, means for locking the rests in the seats, and a cover extending over the upper edges of the side members and projecting beyond the same to form seats in a second course.

3. A frame for concrete work including spaced form members having registering openings, connecting and spacing means at intervals in the length of the form members, and coacting core members between two adjacent connecting and spacing means and provided at their ends with notches seating around said spacing and connecting means, each core member comprising sections diagonally jointed.

4. A frame for concrete work including spaced form members, a sectional core therebetween comprising side members and a cap plate extending over the side members and projecting beyond the ends thereof, and cross bars in the length of the core extending over the cap plate and the form members and secured at their ends to the form members above through the top plate to cause the bottom plate sections to firmly engage in a previously formed seat.

I In testimony whereof I aflix my signature.

DELBERT F. MILLER. [L. s]

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