US1520409A - Refrigerator construction - Google Patents

Description

A. ELMENDOR F REFRIGERATOR CONSTRUCTION 1921 3 Sheets-Sheet 1 Filed Feb. 28

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Dec. 23, 1924. 1152mm A. ELMEN DQRF REFRIGERATOR CONSTRUCTION Filed Feb. 28, 1921 3 Sheets-Sheet 2 Patented Dec. 23, 1924.

UNITED STATES 1,520,409 PATENT OFFICE.

ABMIN ELMENDORF, OF CHICAGO, ILLINOIS, ASSIGNOR TO HASKELITE- MANUFAC- TURING CORPORATION, A CORPORATION OF NEW YORK.

REFRIGERATOR CONSTRUCTION.

Application filed February 28, 1921. Serial No. 448,427.

To all whom it may concern:

Be it known that I, ARMIN ELMENnonr, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain new and useful Improvement in Refrigerator Construction, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification. 7

In my prior application Serial No. 442,- 406 filed February 4, 1921, I have disclosed a novel form of heat insulating material a single sheet of which may be employed to form a wall of the kind that has heretofore been made up of a plurality of sheets or layers.

The present invention has for its object to produce a simple and novel design of a refrigerator or the like which will permit the aforesaid heat insulatin material or a similar material to be emp oyed most advantageously.

The various features of novelty whereby my invention is characterized will hereinafter he pointed out with particularity in the claims; but, for a full understanding of my invention and of its object and advantages, reference may be had to the following detailed description taken in connection with the accompanyin drawings, wherein:

Figure 1 is a top p an view of a refrigerator constructed in accordance with my invention, a portion being shown in section; Fig. 2 is a front view of the refrigerator, a portion of the top and of one of the side walls being shown in section;

Fig. 3

is a section, either horizontal or vertical, on an enlarged scale throu h a corner of the refrigerator shown in igs. 1 and 2;

Fig. 4 is a view similar to Fig. 3, illustrating a construction adapted to be employed where rounded corners are desired;

Fig. 5 is a vertical se ction through the top and back wall of a modified form of refrigerator Fig. 6 is a view similar to Fig. 5, showing only a fragment of the metal lining; an

Fig. 7 is a view similar to Fig. 5, showing a slightly difierent arrangement.

In accordance with my invention the walls of the refrigerator are made of single sheets or slabs of my improved construction material, these sheets or slabs being preferably shaped and finished in the process of manufacturing them, so that they'need only be assembled by the refrigerator manufacturer.

In all the forms of my invention, the individual slabs are made of a thick core sheet of heat insulating material, and comparatively thin sheathing layers glued to the broad faces thereof; the construction being preferably that disclosed in my aforesaid application. Thus, in the arrangement shown in Figs. 1, 2 and 3, each wall is made of a thick core member, a, of heat insulating material, preferably cork board, an outer sheathing, b, and an inner sheathing, 0. Each wall is in the form of a single panel, cut so as to make with the remaining walls any desired kind of joints. In the arrangement shown, the top wall, 1, extends across the tops of the several side walls, three of which are indicated at 2, 3 and 4, while two of the side walls of which the side wall 3 is one, lie between the two other side walls. The walls whose edges engage with the inner faces of the adjacent walls have their sheathing layers extended so as to cover the ends or edges of the latter walls. lhus the side wall 3 has its outer sheathing, 5, extended across the ends of the walls 2 and 4; while all of the side walls have their outer sheathing extended upwardly across the ends of the top wall 1. The cork board is not a suitable material for receiving-screws, nails or similar fastening means, nor is it a suitable material to insure a perfect glued joint when the slabs are assembled to form a walled structure. I therefore place along the edges of the cork board core, between the sheathing layers, and forming an enclosing frame for the core, wooden cleats, d, which are glued in place.

The several slabs of which a refrigerator is to be made having been manufactured in completed form, they need only be assembled in the proper way to produce the shell of a refrigerator; being glued together or being held together by means of screws or the like, or by means of glue and screws both; the solder being placed along the lines of contact between the metal linings if the inner surfaces of the walls or slabs be of metal.

lhe detail of the walls and the joints is shown in Fig. 3. It will be seen that the exterior sheathing is made of a comparatively thick core member, 5, of wood and facing layers, 6 and 7, of wood veneer; while the inner sheathing is made up of a comparatively thick wooden core, 8, and facing layers, 9 and 10, "of wood veneer, there being a .layer of sheet metal, 11, overlying the veneer 10. Those of the walls which together in any one of a plurality of ways.

In Fig. 4 I have illustrated an arrangement similar to that in Fig. 3, except that y the upper Wall or slab does not extend entirely across the upper edge of the side or back slab, leaving room for a finishing piece, 15, resting against the end of the top slab and upon that portion of the side or back slab which is left uncovered'by the top slab. In this arrangement the outer sheathing, b, of the upright slab does not project beyond the cleat, d. In this arrangement, also, I have illustrated how the several slabs may be held together by means of screws, a long screw, 16, extending entirely through that portion of the top slab in which the cleat lies, down into the cleat fprning the upper edge of the underlying s a In Fig. 5 I have illustrated an arrangement in which the sheathing on the inner side of the walls consists simply of metal, each slab having a sheet of metal, 17, between which and the core there may be interposed a layer'of canton flannel or other fabric, 18, which is impregnated with blood glue 'and insures a good joint between the metal and the cork board as explained in my prior application. The upright slab is made the full height of the structure and the horizontal slab abuts against the same, the outer sheathing layer of the horizontal wall extending across the top edge of'the upright wall. In this arrangement, the metal lining of the horizontal slab is continued beyond the cleat and is folded back over the cleat as indicated at 19 in Figs, 5 and 6; thus giving a large area of contact between'the two metal linings at each corner.

In Fig. 7 I have illustrated an arrangement similar to Fig. 3 except that the wooden sheathing is omitted on that side" The outer corners may be protected,

the horizontal slab; and the marginal por- 'tions, 20, of the metal lining of the upright slab being extended and bent back over the cleats. Viewed in another aspect, the construction of Fig. 7 is simply a reversal of the construction shown in Fig. 5.

If desired a metal lining, in addition to the metal lining heretofore described, or constituting the only metal lining for'the refrigerator, may be formed as an independent unit and set into the refrigerator shell.

It will be seen that my invention makes it posible to construct 'efiicient refrigerators very cheaply and, by reason of the use of ply-wood for stiffening urposes and cork board for insulation, re rigerators built in accordance with my invention will be much lighter than ordinary refrigerators and at the same time be strong and durable.

While I have illustrated and described only a single form of my invention with a few sli ht modifications, I do not desire to be limlted to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the terms employed inthe definitions of my invention constituting the appended claims.

I claim: v 1

1. A walled structure made up of preformed slabs each comprising a core member of heat insulating material lying between and permanently secured to an outer sheathing and an inner metal lining, one of the walls lying against an edge of another wall, and the sheathing of the latter wall being extended across and engaging with the adjacent edge of the other wall.

2. A preformed wall comprising a selfsupporting slab of heat insulating material. a rame of wood surrounding said slab, and

a sheathing of ply-wood extending across a as-said slab, and sheathing members lying on opposite sides of said slab and said frame and firmly united thereto.

5. A preformed wall comprising a self slab surrounding the latter,

naaaaoe I supporting slab of heat insulating material a wooden frame surrounding said slab and having approximately the as the slab, and a sheet of ply-wood glued to one face of said slab and frame and projecting beyond the frame at certain of its margins.

6. A. preformed wall comprising a slab of heat insulating material, a frame of wood of approximately the same thickness as the slab surrounding thelatter, a sheet of plywood glued upon one face of the slab and frame, and a sheet of metal glued upon the oppositefaoeof said slab and frame.

'7. A preformed wall comprising a slab of heat insulating material, a frame'of wood of approximately the samethickness as the a sheet of plywood glued upon one face of the slab and frame, and a sheet of metalglued upon the same thickness.

8. A walled structure made up of slabs each formed of a core of heat insulating material having along an edge a wooden cleat of approximately the same thickness as the core, and a sheathing layer extending across one face of the corev and the corresponding face of said cleat; the cleated end of one of said slabs lying against the side-of a second slab and engaging with the cleat I thereon; and an outer sheathing on the first I of said slabs extending beyond the cleat and overlyingthe ole-at ,on said second slab.

In testimony whereof, I sign this specification.

Armin ELMENDonr,

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