US275000A - Refrigerating-structure - Google Patents

Description

(No Model.)

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N. PETERS. Phola-Lilhagripher. Waiivingibn. n.0,

UNITED STATES PATENT OFFICE,

ROBERT HENRY \VATERS, OF MALDEN,.MASSAOHUSETTS, ASSIGNOR TO THE POST REFRIGERATOR OAR COMPANY, OF PORTLAND, MAINE.

REFRIGERATlNG-STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 275,0C0, dated April 3, 1883.

' Application filed October30,1882. (No model.)

To all whom it may concern Be it known that 1, ROBERT HENRY WA- TERS,a citizen of the United States, residing at Malden, in the county of Middlesex and 5 State of Massachusetts, have invented certain new and useful Improvements in Refrigerator- Structures; andIdo hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled [0 in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

I5 This invention relates to the construction of refrigerator railway-cars or other structures; and the object or thezinvention is to obtain a lowtemperature by excluding external air by using double wallswith an intermediate air- 2 space, and the combination with such walls and air-space of sheets ot' thin non-ctmdncting material, all ot'said parts being constructed and arranged snbstantially as hereinafter described.

The drawings accompanying this specifica- 2 tion represent, in Figure 1, an isometric sec tional view of a car embodying my improvements, while Fig. 2 is a horizontal cross-section of a portion of the walls and the non-conducting material. Fig. .3. shows a modified o fOllIl of construction.

In said drawings, A represents the floor of a railway-car or other structure; B, its roof, and O O its walls.

In carrying out my invention I construct 5 each wall 0 of the car or structure double,

the outer shell of such wall being shown at a and the inner at b, an airspace, 0, remaining between the two. The sheathing of the outer wall is shown at d, and the upright joists or i 4.0 timbers of the same at e 6, while the sheathing of the inner walls is shown at f, and the upright joists thereof at g g, &e. Between the joists e and g, I employ a sheet, I), of felt or other equivalent non-conducting material, to 5 exclude externalheat, such sheet extending from top to bottom of the structure, andbeing held in position by the joists, which clamp it tightly; and if found necessary the joists in turn may be fastened together at various points 50 by screws or nails h, 820., preferably inserted from the inside of the structure. Between the inner and outer sheathing, d f, and their respective joists I add sheets i or j of paper, cotton cloth, or other analogous thin non'conductmaterial, to aid in excluding external heat or 5 retaininternal cold.

. The root and floor ot' the structure may be constructed in manner similar to the side walls, asfabove explained, but for all practical purposes this will be found unnecessary. no

The air-space c is in itself a good non-conductor of heat. This,-iu connection with the sheets of felt and paper, or their equivalents, protects to an eminent degree the interior of the structure from-entrance of exterior heat.

In Fig. 3 I have shown a modified form of the walls, in which the general arrangement. is the same, except that'upon the outside sheets, i, and inside sheet,j, thin vertical stripsk/c, &c., are secured previous to putting on the sheath- 7o ing. Upon these thin pieces the sheathing rests, and allows the paper sheets 'i orj to be put on in large sheets and remain intact during the process of wedging up the individual boards comprising the sheathing.

I claim- 1 l. A ret'rigerating-structure having walls which consist of an outer sheathing, an inner sheathing, two sheets, i andj, of non-condtu-ting material, a sheet, D, of felt, and upright 80 joists eg, to which the latter sheet is attached, saidsheets i andj b ing in proximity respectively to said outer sheathing and said inner sheathing, and said sheet I) being located in the middle of the space between said outer 8; sheathing and said inner sheathing, substantially as set forth.

2. A refrigeratingstructure having walls which consist ot'an outer sheathing, an inner sheathing, two sheets, i andj, ot'non-conducto ingtnaterial, a sheet, D, of felt, upright joists eg, to which said sheet I) is attached, and thin vertical strips it, these strips serving to hold the sheetst' andj at a short distance from the said outersheathing and inner sheathing, 5 respectively, and said sheet D being located in the middle of the space between said outer sheathing and inner sheathing, substantially as set forth.

In testimony whereof I affix my signature I00 in presence of two witnesses.

ROBERT HENRY WATERS.

Witnesses:

H. E. Loner F. CURTIS.

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