US 1787453 A
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Jan. 6, 1931. R. MURRAY INSULATOR AND CORE Filed Oct. 20, 1928 TOR arr INVEN V l l Y l I I I l I l l l l I I l l I Y I l Z ni 7 gw J,
Patented Jan. 6 1931 RICHARD MURRAY, NEW YORK, N. Y.
INSULATOR AND CORE Application filed October 20, 1928. Serial No. 313,800.
This invention relates to insulators or cores used in the construction of concrete walls of buildings; and the object of the in vention is to provide a device of the class specified which is composed of inexpensive material and which is of a built up structure in the form of a plurality of corrugated sheets to give the required strength thereto to maintain the, body, of concrete in proper positionin the setting of such body in the formation of walls of any kind or class and in fact in the formation of concrete structures of any description; a further object being to provide a device of the class described on one side of which is arranged a sheet of comparatively rigid material preferably having temperature resisting properties such for example as a sheet of asbestos; a still further object beaoing to provide the other-side face of the devicewith a sheet of material treated to render the same substantially moisture proof; and with these and other objects in view, the invention consists in a device of the class and for the purpose specified which is simple in construction, efficient in use, and which is constructed as hereinafter described and claimed. I r I The invention is fully disclosed in the foleo lowing specification of which the accompanying drawing forms a part, in which the separate parts of'my improvement aredesignated by suitable reference characters in each of the views, and in which Fig. 1 is a perspective view of a part of a concrete body showing one method of arranging my improved core and insulating devices therein.
Fig. 2 is a perspective view of a part of one ofthe devices with part of the construction broken away; and, Fig. 3 is a perspective view of a concrete body with one of my improved devices arranged therein and showing a modified form of device. Y
My improved core forming and insulating device consists in the construction shown in Figs; 1 and 2 of the drawing, of a side facing sheet 5 of temperature insulating 5'0 material of a substantially rigid nature and preferably composed of asbestos or an asbestos compound, or other materials having similar properties may be employed. Ar-
ranged on one face of the sheeto is a plu-- rality of corrugated sheets 6, 7 and 8. The to sheet 6 rests directly upon the sheet 5 whereas the sheets 6 and 7 are spaced apart by a straight sheet 9, the sheets 7 and 8 spaced apart by another straight sheet 10, and arranged on the outer face of the sheet 8 is so another sheet 11, outwardly of which is a facing sheet 12. I
The sheets 6 to 11 inclusive may be com posed of heavy paper, cardboard or any suitable and preferably inexpensive matee5 rial which will be of such texture as to produce the required strength and pressure resisting properties to suit the particular uses required of the device. The facing sheet 12 is preferably composed of a material treated or saturated to render the same substantially moisture proof such for example by a treatment of wax, paratlin or similar compounds or treated with pitch, tar or the like.
The sheet 12 extends beyond the contour of each of thedevices to form side flap portions 13 and top flap portions 1 1. The flap portions 13 are wrapped around the sides of each device whereas the flap 1 1 normally rests upon the top of each device in the operation of pouring the concrete and may be torn off in whole or in part when the concrete has become set and in the operation of placing one device upon the other in forming a continu ous chamber or core through the concrete body.
While my invention has many uses, its primary use is in the construction of concrete walls of buildings, and in this use, the devices may be placed directly one upon the other and spaced laterally in the wall to form continuous chambers or cores extending vertically through the wall structure.
In Fig. 1 of the drawing, 1 have shown at 15 a part of a concrete wall with two of my improved devices arranged therein to form two separate chambers or cores 16 and 17 extending vertically through the wall and spaced apart by columns of concrete designated at 18 which join the inner face portion 15a with 7 in forming the concrete wall structure. However, it Wlll be understood that two or more or these devices may be placed-one upon the the outer face portion 15b thereof. These columns will be arranged between the spaced devices employed in the complete wall struc-' 'ture.
In the construction shown, my improved core forming and insulating devices are made rectangular in form and preferably of a height equal to the height of a cast to be made other in forming one cast or mold of the wall structure, and furthermore it will be'apparent that my invention is not necessarily limited to any partlcular contour of the separate devices employednor to any particular arrangement 7 thereof in the wall structure. 1 This phase of my invention is more specifically covered ina companionapplication filed by me of equal dateherewith.
In. 3 of the drawing, I have shown a slight modification in the form of the devices employed, and in this construction 56; repreisents the asbestos sheet similar to the sheet 5; 6a, 7a, 8a, 9a, 10a and 11a represent sheets similar to the sheets 6 to 11 inclusive, and instead ofemploying the sheet 12 as, shown in Fig. 2 of thedrawing, I employ anotherrectangularsheet 19- With this construction in molding the concrete of a wall 20-around thedevices, the body of concrete will extend into 1 the recesses 19a of the sheet 19 to form a multiplicity of vertical concrete ribs which will 7' be of the cross section of the recesses 19a,
and in like manner, the projecting portions 1960f the sheet 19 will form corresponding recesses intermediate said ribs. 7 p
At thistime, it will be understood that my invention is notnecessarily limited to any particular number of the corrugated or other sheets employed in the separate devices nor to any particular curvature or cross sectional form of the corrugated 'sheets'as this will largely depend upon the size of the core required and the size of the wall structure to be formed and the amount of pressure which must be resisted by said devices. -While I have shown certain details of construction for carrying my invention into'effect and have referred to a specific use of the invention, it: 7 will be understood that I am not necessarily limited in these respects and various changes in and modifications of the construction herein shownand described may bemade within the scope of the appendedclaims without departing from the spirit of my invention or sacrificing its advantages. Having fully described my invention, what I claim as new and desire to secure by Letters Patent,- is
1. A device for forming cores or chambers in concrete bodies consisting of a plurality 1 of sheets having irregular cross sectional contour arranged side by side, straight sheets in-' terposed between said first named sheets, all
of said sheets being composed of fibrous material, and a facing sheet at one side of the device involving a compound having heat resisting properties. p
2. A device for forming cores or chambers in concrete bodies consisting of a plurality of sheets having irregularcross sectional contour arranged side by side, straight sheets interposed between said first named sheets, all
of said sheets being composed of fibrous material, a facing sheet at; one sideof thedevice involving a compound having heat resisting properties, and a facing sheet on the other side of the device including moisture proof material. U
3. A device for forming cores or chambers in concrete bodies consisting of a plurality of sheets having irregular cross sectional contour arranged side by side, straight sheet-s interposed between said firstjnamed sheets, all
of said sheets being composed of fibrous ma terial, a facing sheet at one side of the device involving a compound, having heat resisting properties, a facing sheeton the other side of the device including moisture proof material, andsaid last named sheet having fiaps adapted to lie over predetermined edge portionssof said device. Y T
v L- A core forming device for concrete structures comprising a member adapted'to be ar ranged and imbedded in a body of concrete to v form a chamber or'core therein, said member consisting of a plurality of corrugated sheets arranged sideb'y side withfiat spacing sheets arranged therebetween to form a unit structure, and 'said' member including a facing.
vsheet having waterproof characteristics arranged upon one sideface of said member.
5. A core forming device for concrete structures comprising a member adapted to be arranged and imbeddedin abody of concrete to form a chamber or core therein, saidmember consisting of a plurality of corrugatedsheets arranged side by side with fiat spacingsheets arranged therebetween. to form .a unit structure, said member including a facing sheet having waterproof characteristics arranged upon one side face of said member, and another comparatively thick facing sheet of fireproof material arranged on the other face of said member. I v
6. A core forming device for concrete struc-. tures comprising a member adapted to be ar ranged and imbedded in a body of concrete to form a chamber or core therein, said member consisting of a plurality of corrugated sheets cover predetermined side edges of said member.
7 In concrete structures of the class described, a core forming device adapted to be imbedded in the concrete structure in forming the same, said member comprising outer facing sheets of moistureproof material preventing the passage of concrete into said member, and the central body portion of said member being formed from a plurality of sheets placed side by side, alternate sheets being of corrugated cross sectional form and the intermediate sheets being fiat.
8. In concrete structures of the class described, a core forming device adapted to be imbedded in the concrete structure in forming the same, said member comprising outer facing sheets of moisture-proof material preventing'the passage of concrete into said memher, the central body portion of said member being formed fromsa plurality of sheets placed side by side, alternate sheets being of corrugated cross sectional form and the intermediate sheets being flat, and one facing sheet of said member being comparatively thick and composed of fireproof material.
In testimonythat I claim the foregoing as my invention I have signed my name this 11th day of October, 1928.