USRE21816E

USRE21816E - Insulated oak wall

Info

Publication number: USRE21816E
Authority: US
Priority date: 1937-06-12
Publication date: 1941-06-03
Also published as: US2117397A

Description

Jungs, 1941. D, BONSALL Re. 211,816

INSULATED CAR WALL Original Filed June l2, 195'? ll ,si w, I 4a Reissued June 3, 1941 INSULATED UAR WALL Charles D. Bonsall, `Chicagtnlll., assignor, by

mesne assignments, to Standard Railway Equipment Manufacturing Company, a corporation of Delaware Original No. 2,117,397, dated'May 17,1938, Serial No. 147,969, June "12, 1937. Application for reissue May 13, 1940, Serial No. 334,985

19 Claims.

The invention relates to a wall which is insulated to prevent orv retard transfer of heat through it from one side to the other and is especially adaptable for use in a wall, roof, floor or door for a refrigerator car or truck which is Vused to transport perishable commodities.

One of the objects of the invention is to provide a wall of spaced apartl sheets, one or both of which is metallic, with stiflenersy connecting such sheetsso that the sheetswill cooperate to form a very strong Istructure to resist stresses against either side of the wallk and to provide an insulating wall by putting insulating material between the sheets, and as the. insulating materials now in general use are combustible, another object of the invention is to provide stiffeners of such construction that a sheet may be welded. to

Y'them without igniting the insulating material.

l A stillvfurther object is to provide means to insulate the stiileners so` that heat will not be conductedby them through the wall.

. Another object is to associate and arrange suc insulating means so that it cooperates with the elements forming the stileners to provide hollow spaces to prevent the heat of welding from igniting the insulating material between the sheets, and a further object is to insulate that portion of the wall occupied by the hollow spaces by filling vsuch spaces with non-combustible insulating material.

Another object is to provide a waterproof structure by connecting the associatedy partsv of the wall together so as to prevent moisture fromcontacting the insulating material and reducingv its insulating efficiency.

Another object is t-o provide a metallicsheet wall having a smooth interior or .exteriory surface (or .both if desired) made out of. at metallic sheets.

. In the drawing: f

Fig. 1 shows a typical application offmy improved wall used as the floor of ar railway refrigerator car.

Fig. 2 shows an enlarged cross section ofthe metallic. sheets and stiiener shown in Fig. 1.

Figs. 3-8` inclusive show modified forms of stieners which may -be used between metallic sheets to` accomplish the objects ofy the invention. f

The drawing shows the usual parts of the car, such-as side sill I; side wall sheathin'g; side wall lining 3; side wall insulation 4 and side wall framing 5. I y .y

The form of `my wall or y,floor shown in,Figs.;1

and 2 comprises an upper metallic sheet] and ay lower metallic sheet 8 spaced therefrom and substantially parallel thereto, insulating material 9 between said, sheets and an insulated stiffener Ill connecting the sheets. The stiffener comprises two. metallic members, each of said members comprising anouter Iiange I3, an inner flange I4 and a web I5 connecting the flanges. The insulating fabric or other insulating material I6 is positioned between the inner flanges I4 of the two. members and is preferably secured thereto by the rivet I'I. The insulating fabric is formed with flanges il and 2|, which fianges cooperate with the webs I5 of the members to provide hollow spaces 22 and 23. The metallic sheets 'I and 8 kare secured to the metallic members, and one or both of the sheets "I--B being welded to the outer flanges I3; the spaces 22 and 23 preventing the heat of the rwelding from igniting the insulating material 9. When two upper sheets l`-'| or two lower sheets 8 6 `or two upper sheets and two vlower sheets are used, they may be joined by the welding material 24 which secures both of said sheets to the outer flange I3 of the member.

,n The insulating fabric IE is made of some porous material which may be moulded in any desired shape, usually when wet, but which has suicient stillness, when dry, to maintain its form. A piece of any material having insulating qualities and rigidity adequate to function in the manner disclosed may be used in place of the fabric.

If desired the spaces 22 and 23 may be filled 'with 'some ynon-combustible material, such as asbestos. c

In the modification shown in Fig. 3 a fabric 30 is made of one flat pieceof material extending between the upper l and lower 8 metallic sheets andv the members 3I-32 are secured on opposite sides of' the fabric, preferably by the rivet 33.

` Each member is provided with an inner flange 34,

an outer flange 35 and a web36'to form the space 31. The metallic sheets 'I-B are secured to the members :il-32, one or both of the sheets l-8 being secured by welding (3l) -to the outer anges -In the modification shown in Fig. 4 the fabric 40 is one flat piece of material extending diagonally' between the upper l and lower 8 metallic sheets. The metallic members are positioned on opposite Vsides of the fabric and secured thereto and to each other, preferably by the rivet 4I, and each member is provided with a web 42 and an'ge 43 to cooperate with lthe fabrlc'to form the spaces 44vand 4,5. r'he upper and lower sheets are secured' to the ,metallic members, one or both of,

metallic sheet is Welded and a portion spaced from a part of the fabric toform Walls at least partially encasing hollow spaces positioned adjacent the welds to prevent the heat of welding from igniting the insulation.

8. An insulating wall comprising spaced apart metallic sheets, combustible insulatingmaterial between said sheets and an insulated stifener connecting said sheets, said stiffener comp-rising a piece of stiff insulating fabric extending between said sheets, a metallic member on each side of said fabric, and means to secure both of said members to said fabric, each of said members having a dat part to which the adjacent metallic sheet is welded an-d a portion spaced from a part of the fabric to form walls at least partially encasing hollow spaces positioned adjacent the Welds to prevent the heat of welding from igniting the insulation, each of said members provided with a lip to hold the fabric in place.

9. An insulated wall comprising spaced apart metallic sheets, insulating material between said sheets and an insulating stifener connecting said sheets, said stiifener comprising a member secured to one of said sheets, a metallic member welded to the other of said sheets, and an insulating piece interposed between said members and having a part spaced from a portion of said metallic member to form walls at least partially encasing an air space contiguous to the weld to prevent heat of the welding from igniting said insulating material.

10. An insulated wall comprising a sheet, a pair of substantially coplanar metallic sheets in spaced relation to the iirst mentioned sheet to form a space therebetween, insulating material in said space and an insulating stiffener in said space comprising a member secured to the first mentioned sheet, a metallic member, and an insulating piece interposed between said members, said coplanar sheets being welded to said metallic member, said insulating piece having a part spaced from a portion of said metallic member to form Walls at least partially encasing an air space contiguous to the welding to prevent heat of, the welding from igniting said insulating material. f

11. An insulated wall comprising a sheet, a pair of substantially coplanar metallic sheets in spaced relation to the rst mentioned sheet to form a space therebetween, insulating material 1n said space and an insulating stifiener in said space comprising a member secured to the first mentioned sheet, a metallic member, and an insulating p-iece interposed between said members, said coplanar sheets being welded to a portion of said metallic member, said insulating piece having a concave part at least partially encasing said metallic member and disposed in spaced relation to said portion to prevent heat of the welding from igniting said insulating material.

l2. An insulated wall comprising a sheet, a metallic sheet disposed in spaced relation to the first mentioned sheet, insulating material between said sheets, a stiffener secured to said iirst mentioned sheet and extending substantially to said metallic sheet, said stiffener including an insulating piece having a depressed part disposed in spaced relation to a portion of said metallic `sheet to form walls substantially enclosing an air space, a metallic member disposed within said air space and forming a part of said stifener, and means to weld said metallic sheet to said metallic member.

13, An insulated Wall comprising a sheet, a

metallic sheet disposed in spaced relation to the iirst. mentioned sheet, insulating material between said sheets, a stiffener secured to said iirst mentioned sheet and extending substantially to said metallic sheet, said stiffener including insulating means to retard flow of heat through the stiifener from one to the other of said sheets, said means having a depressed part spaced from a portion of said metallic sheet to form walls at least partially encasing an air space, a metallic member disposed within said air space and forming a part of said stiffener, and means to Weld said metallic sheet to said metallic member.

14. An insulated Wall comprising a sheet, a metallic sheet disposed in spaced relation to the rst mentioned sheet, insulating material between said sheets and an insulating stifener in said space comprising a member secured to the iirst mentioned sheet, a metallic member and an insulating piece interposed between said members, said metallic sheet being welded to said metallic member, said insulating piece having a concave part which forms a wall at least partially enclosing a space encasing said metallic member to prevent heat of the welding from igniting said insulating material.

15. An insulated wall comprising a sheet, a pair of substantially coplanar metallic sheets disposed in spaced relation to the first mentioned sheet to form a space therebetween, insulating material in said space, a stiiiener disposed in said space and secured to the iirst mentioned sheet, means to secure said metallic sheets to said stifi'ener, and means to retard flow of heat through said stiiener between said sheet and said metallic sheets, said insulating means having a part spaced from the adjacent marginal portions of said metallic sheets to form Walls at least partially encasing an air space, said adjacent edges being welded together, whereby the air space protects the insulating material from the heat of Welding.

16. An insulated wall comprising a sheet, a metallic sheet spaced therefrom, insulating material between said sheets and an insulating stiffener connecting said sheets, said stiffener comprising a member secured to said first mentioned sheet, a metallic member having a portion thereof welded to said metallic sheet, and means to retard heat transfer between said members, said means having a part spaced from said portion and forming a wall structure which at least partially encases a space positioned adjacent to the Weld to prevent heat of the Welding from igniting said insulating material.

17. An insulated Wall comprising a sheet, a metallic sheet disposed in spaced relation to the iirst mentioned sheet to form a space therebetween, insulating material in said space, and a stiffener disposed in said space and secured to said first mentioned sheet, said stiffener including a metallic member and means to retard heat transfer between said metallic member and said first mentioned sheet, said metallic sheets being welded to said metallic member, said means having a part spaced from the weld to form a Wall structure at least partially encasing an air space contiguous to the Welding to protect said insulating material from the heat of welding.

18. An insulated wall comprising a sheet, a pair of substantially coplanar metallic sheets disposed in spaced relation to the first mentioned sheet to form a space therebetween, insulating material in said space, and a stiiener disposed in said space and secured to said first mentioned metallic member and said 'rst rmentionedfsheet, saidmetallic sheets being Welded to vsaid:metallic member, said means having aipartaspaceri from the weld to form a wall structurerat least-partially encasing an air space .contigueus to the Welding to protect the insulating material from the heat of Welding.

'19. rAn insulated Wall comprising .,asheet, :a metallic sheet disposed in spacedxrelation-:tothe rst 'mentioned sheet to form lfa '.space there- `eetween, insulating material `in :said space, :and

:ansie sheet, said stiiener including :a imetailicimember and means to retard heat :transfer ibe'tweensaid faxstiffener .disposed .z'insad-space and secured Lto :said :rst'menticn'ed sheet, fsad stiffener in- 1eludingxa. Imetallic zmember, said metallic sheet being zWelded t'o said metallic member, said stiffener also including :insulating means interposed Sbetweenfsaid `sheet-and said metallic sheet and ihavngzapart spaced lfrom the Weld to vform a Wall. atileastfpartially encasng an air space con- Itiglious the 'Welding,thereby preventing heat -of the Welding :from igniting vsaid insulating material.

` CHARLES D. BONSALL.