US1749336A - Refrigerator door of molded asphalt composition - Google Patents

Description

H. D. GEYER March 4, 1930.

REFRIGERATOR DOOR OF MOLDED ASPHALT COMPOSITION Filed March 9, 1927 Qwvento'a 64 2;, 5

I Patented Mar. 4, 1930 unirsn STATES PATENT; OFFICE HABVEY D. GEYER, OIF'TDAY'IOIN',- OHIO, ASSIGN'OR TO THE INLAND 'MANUFACTURING I COMPANY, OF DAYTON, OHIO, .A'GORPOBATION- OF DELAWARE REFRIGERATOR DOOR OF MOLDED' ASPHALT COMPOSITION Application filed March 9,

of a molded asphalt composition.

inserted or'replaced after a following descripti0n,reference being had to A further object is to provide an improved type of door gasket and means of retaining it in place whereby the gasket may be easily period of use by an unskilled person. i a

' Further objects and advantages of the present invention will be apparent from the the accompanying drawings, wherein a pre ferred' formv of embodiment of the present invention is clearly shown. I In the drawings:

Fig. 1 is a plan view looking down upon Fig. 2 of a refrigerator door built according to this invention. I F Fig. 2 is a vertical section on line 2-2 of 1g. I I Similar reference characters refer to similar parts throughout the several views.

Referring to the drawings, 10 designates the relatively heavy molded composition doorframe and ll the relatively thin panel which is preferably molded integral with the frame 10. An inner sheet metal lining 12,

- preferably procelain coated, lies upon and is 4' secured to the inner surface of the frame 10,. 0

thereby forming a complete closure for the interior recess 13 of the'molded door. .This

'molded therein extending entirely around recess is filled with anyflsuitable heat ins'ulating material 14, such as the loose cork illus- The inner face of frame 10 ha s a groove 15 the periphery of the door. The edge of the metal lining 12 lies adjacent to the groove 15, and an inner moulding strip 16, having a tongue 17 which nests within groove 15, 1s

1927. Serial No. 174,085.

applied thereover to firmly clamp the lining inplace. This strip 16 is preferably of a molded composition material and may be molded in one piece, that is a single one-piece moulding frame of the proper dimensions to fit the door, as clearly shown in the drawings. The moulding frame 16 is rigidlyclamped in place by the screws 18 suitably spaced around the periphery of the door. These screws 18' will cut their own threadsin the molded material of frame 10 when driven home with a screw-driver. countersunk heads of screws 18 are plugged over with a suitable sealing compound 19 so that no metal other than theporcelain 'coated' lining 12 will be exposed on the inside of the door.

If it is desired to have a sealing gasket on the door, a suitable groove 25 is molded, partly inframe 10 and partly inthe moulding frame 16, as clearly shown, so as to pro- .vide 'a'contmuous groove extending around the periphery of the door. A soft'rubber gasket 26 is provided having a portion 27 retained snugly within groove 25 and a portion 28 projecting outwardly'from the door to 'engage the r'abbeted abutment of the door I opening and thereby form a goodair seal for the door. It is thus seen that'the moulding frame 16 servesthe double function of retaining. the metal lining 12 and the rubber (gasket 26 in place and completely conceals the'edges thereof and so forms a neat inner construction.

Preferably the soft rubber gasket 26 is molded in an endless one-piece form of the proper 'dimensions'to' fit snugly within the groove 25. This gasket can then be removed by catching hold of the projecting portion 28 and pulling it out of the dovetail groove 25 when it is desired to replace a. worn out gasket. The new-gasket can be inserted without removing the moulding frame 16 simply by stretching a' certain length of the gasket at a time to reduce the cross sectionof the portion 27 and permit its easy insertion within the groove 25. It is thus seen that after these gaskets deteriorate and become poor seals after a certain period of use they can be The deeply easily replaced by an unskilled owner without calling for the service man.

The composition material from which members 10 and- 16 are molded is compounded from gilsonite or other hard asphalt,

a suitable flux such as a low melting petroleum residue, disintegrated asbestos fiber,

and a suitable inert filler such as kieselguhr,

fine clay, or powdered slate. This composition and the processes of mixing andmolding the same is fully described and claimed in my 10 termed a cold molding process. The door hinges (not shown) may be easily secured to the relatively strong frame 10 by suitable bolts or large wood screws since screws hold Well in this materiah While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow. What is claimed is as. follows: e

1. As an article of manufacture, a heat insulating door for refrigerator cabinets, comprising: a relatively thick section panel frame and a relatively thin panel integrally molded of a heat insulating bituminous composition comprising hard asphalt, a flux of said interior recess, and heat insulating material filling said recess.

4. As an article of manufacture, a heat insulating door for refrigerator cabinets, comprising: a recessed outer panel molded in one PIGCQfIOm a hot plastic compound ofbltuminous material, fiber, and inert filler, an

interior metal lining fixed to said molded outer panel to close said recess, and heat insulating material. filling said recess between said panel and lining. In testimony whereof I hereto aflix my signature.

' HARVEY D. GEYER.

lower. melting point, asbestos fiber (and an inert filler to form an interior recess of substantial depth, an inner metal lining secured 40 to the inner surface of said frame to thereby form a closure for said interior recess, and

heat insulating material filling said recess.

2. As an article of manufacture, a heat insulating door for refrigerator cabinets, comprising: a relativelyv thick section panel frame and a relatively thin panel integrally molded of a heat insulating bituminous composition to form an interior recess of substantial depth, an inner metal lining for said frame forming a closure for said interior recess, a heat insulating bituminous composition moulding overlapping'the edge of said lining and secured to said frame, and heat insulating material filling said recess.

55 3. As an article of manufacture,.a heat insulating panel for refrigerator cabinets comprising: a heat insulating bituminous composition outer panel having a peripheral'frame integrally molded therewith and extending inwardly to form an interior recess,'said composition consisting of gilsonite, a flux for said gilsonite, disintegrated asbestos fiber,

and a heat, non-conductive inert filler, an in- I ner metal lining overlapping and secured to 65 said frame to form a complete closure for

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