US2019588A - Refrigerating apparatus - Google Patents

Description

Nov. 5, 1935. H. WALLACE REFRIGERATING APPARATUS 5 Sheets-Sheet 1 Filed Jan. 31, 1929 III Nov. 5, 1935. H, WALLACE REFRIGERAT-ING APPARATUS Filed Jan. 31, 1929 3 Sheets-Sheet 2 CCCC LCCCC Nov. 5, 1935. H. WALLACE REFRIGERATING APPARATUS Filed Jan. 31, 1929 3 Sheets-Sheet 3 Patented Nov. 5, 1935 NT OFFICE BEFBIGERATING APPARATUS Hugh Wallace, Dayton, Ohio, assignor, by mesne assignments, to General Motors Corporation,

a corporation of Delaware I Application January'31, 1929, Serial No. 336,451

. 2 Claims.

This invention relates to refrigerating apparatus and more particularly toa cabinet and to I a method of its manufacture.

net which mayprovide an improved cabinet.

Another object of this invention is to provide an improved method of manufacturing refrigerator cabinets.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of the present invention is clearly shown.

In the drawings:

Fig. 1 is a vertical'cross-sectional view taken transversely to a cabinet embodying features .of this invention;

Fig. 2 is a vertical cross-sectional view taken along the line 22 of Fig. 1;

:Fig. 3 is a horizontal cross-sectional view taken along theline 3-3 of Fig. 1;

Fig. 4 is an elevational view of a cabinet partially assembled;

Fig. 5 is an,enlarged cross-sectional view a portion of Fig. 3;.and I Fig. 6 is a view somewhat, similar to Fig. 5 of a slightly modified form of this invention.

- A cabinet embodying features of this invention is generally designated as 20. It inayv include a refrigerated food compartment 2| and, if desired, a machinery compartment designated at 22a. If the cabinet is to be mechanically cooled, it may be provided with a cooling unit generally designated as 23 which may, if desired, be a float controlled evaporator and refrigerating system of the typelshown in the patent to R. G. Osborn, No. 1,556,708,'patented October 13, 1925. surrounded by an apron or shield generally designated as 24 which may be of the type disclosed .in' the application of Francis E. Stevenson, Se-

rial No. 257,999,-filed February 29, 1928. The

construction of the outer casing may, if desired, comprise a series of panels somewhat of the character disclosed in the joint application of Henry P. Braeutigam and William C. Holbroolr, Serial No. 257,989, filed February 29, 1928.

.In manufacturing thiscabinet a framework, generally designated as 25, may be provided.

If desired, the cooling unit-may be 1 irons 21, upper horizontal corner angle irons 28, lower corner angle irons 29. and, if desired, intermediate horizontal angle irons 30. If desired, some or all of the angle irons may be braced: by braces'3l placed along the sidesand rear. The food compartment may comprise a boxlike lining 22 having a door opening 33. This lining may have at least part of the insulation attached thereto before it is placed on the framework. For this purpose, the lining 22 may have .the edge along the door opening 33 secured to a non-conducting door'jamb 32 made of wood, for instance. Some orall of the outer sides of the lining 22 may have insulation placed or secured thereon. For thispurpose slabs 34' of rock-cork or rock-board may be cemented, if desired, to the 'sides of the lining 22 bysome bituminous cement, -such as hydrolene, applied in a heated condition and the outer surface of the insulation may be rendered substantially hermetic by some construction which renders it air-tight. For this purpose the outer surface may have an outer hermetic coat,,for instance, a metal air-tight enclosure 35.. A satisfactory structure may include an outer box-like metal cover 35 placed around the insulation members 34 and secured hermetically along the edge of the door jamb 32. In order to insure that the construction is hermetic a bituminous ce nent, such as hydrolene, 36 may be inserted between thedoor jamb and the insulation either during the placing of the insulation on the lining 22 or after'the outer casing 35 has been placed .over the insulation by providing suitable" openings in the casing .35 and by pouring the bituminous cement into the space. Under some conditions, the bituminous cement between the insulation members 34 and the lining 22 may be omitted. After the lining -'has been thus treated and rendered into a unitary'unit, it'may be secured to the framework 25 in any desired manner. A satisfactory manner is shown in Fig.4 wherethe assembled lining unit, generally designated as 31, may be inserted from the top or from the bottom of the framework, and when in proper position, the dooriamb 32 may be secured to the front upright members '26 'by any suitable attaching means, such as screws or bolts. After the lining unit 311s in place, other portions of the cabinet may be assembled on the structure. Thus, the outer casin which may include panels of the character heretofore'described in the said application of Henry P.

The framework may include vertical front cor- ,Braeutigam and WilliamC. 'Holbrook may be ner angle irons 28, vertical rear corner angle; placed over the framework and suitable padding 38. The outer panels may include a front set of channel-like members 39, a side set of channelmembers 40, a rear panel 4| and a top 42. These panel members may besecured in place substantially as disclosed in the joint application of Henry P. Braeutigam and William C. Holbrook heretofore referred to, and for this purpose the angle irons may be provided with inward recesses 43 for receiving therein the joint structure 44. A finishing strip 45 may be placed over the exposed edges of the lining 22 and panel members 39 in order to give a finished appearance to the cabinet.

In the form shown in Fig. 6 the angle irons need not be provided with the recesses 43. As there shown, the angle irons have straight edges, and if the outer panels are to be of the same construction, the padding members 33a may be generally cross one or more angle irons or pieces. of the door jamb 32. Suitable notches may be provided in the angle irons and the door jamb in order to accommodate the flanges 52 where the same cross the members as disclosed in the said joint application. However, the flanges 52 may be, shortened at these points in order that the an'gle irons or the door jamb need not have notches placed therein.

Another method of assembling the lining 22,

the insulation 34 and the box-like casing 35 may be used. Thus the box-like casing 35 may'be placed with the side 35a on the bottom and with the edge 35b at the top. A slab of insulating material may be placed over the side 35a which slab would have its upper edge along the line 35c.

" The lining 22 may then be inserted in the boxlike casing 35 with its door opening 33 upwardly disposed. Thereafter the slabs of insulation which would form the sides and the top and bottom of'the insulation can-then be slipped in be tween the lining 22 and the casing 35. The insulation may then be rendered hermetically alrtight by pouring a layer of hydrolene or bituminamazes ous cement 38 while the casing 35 and the lining 22 are in the position with the door opening at the top. Thereafter the door jamb 32 may be placed over the layer of hydrolene 35 while the layer of hydrolene is still in .a molten condition and thereafter lining 22 and the ox-like casing 35 may be secured to the door jam 32 as by nails shown dotted in Fig. or by any other suitable fastening means. While the form of embodiment of the 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:

1. A refrigerator cabinet comprising an outercabinet structure of boxlike form, said outer structure having a compartment with a door opening, and an inner insulating unit formed with a storage compartment and having a door jamb for the door opening, said door opening leading to said storage compartment and facing laterally when the cabinet is in its operative posi- I -tion, an end of said cabinet having an opening sufliciently large for insertion of said insulating unit into the first-mentioned compartment, said door opening being too small to permit lateral insertion of said insulating unit into the firstmentioned compartment, and said outer cabinet structure having an anglei'acing plate one angle of which engages'said door jamb.

2. A refrigerator cabinet comprising cabinet structure of box-like form, said outer structure having a compartment with a door opening, and an inner insulating unit formed with a storage compartment and having a door jamb for the door opening, said 'door opening leading to said storage compartment and facing laterally when the cabinet is in its operative position, the top of said cabinet having an opening,

an outer

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