US312830A - Refrigerator-car - Google Patents

Description

(No Model.)

T. N. ELY 81; J. W. CLOUD.

REFRIGBRATOR CAR.

No. 812,880. Patented Feb.. 2.4, 1885 jig;l

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THEODORE N. ELY AND JOHN W. CLOUD, OF ALTOONA, PENNSYLVANIA.

REFRIGERAToR-CAR- :JPECIFICATION forming part of Letters Patent No. 312,830, dated February 24.-, 1885..

Application filed December 24, 1,884. (No model.)

T 0 @ZZ whom it may concern:

Be it known that we, THEODORE N. ELY and JOHN W. CLOUD, both of Altoona, Pennsylvania, have invented a new and useful Iniprovement in Refrige1'ator-Cars, of which J(he following is a full, true, and accurate description', reference being had to the drawings forming part of this specification.

Our invention has reference to refrigeratorcars, and has for its object the production of a very low temperature by means of a constant circulation of dry pure air, and also economy in the use of the ice which we employ to cool thc air.

Our invention consists in the improvements hereinafter pointed out, and by which a refri gerator-car having the same general structure and combination of parts, as is shown in Letters Patent No. 290,324, granted to Ely, Oloud, and Vall, December 18, 1883, may be cooled to a lower temperature than has heretofore been practicable, and at the same time have a better and more rapid circulation of air.

Reference being now had to the drawings, in which similar letters designate similar parts, Figure 1 is a longitudinal sectional view of our improved car; Fig. 2, a cross-section through the upper part of one end, and Fig. 3 an enlarged longitudinal section through to the upper part of one end of the car.

A is the chamber to be cooled. B is the icebox at the top of the car. C is the partition by which the cold-air chamber is divided from the ice-boxes and lues, and it is made with its outer surfaces, or those parts exposed to the refrigerator-chambers, of a non-conducting material, while on the interior it is preferably of metal. D is the opening or openings for the admission of air atthe top of the ice-box. E is a prolongation of the nue F, by which an impetus is given to the cooled air before it enters the chamber, and in which it is dried, as described in Patent N o. 290,324 aforesaid. G is a trough or box of slats or grating, forming a second icebox. His a wire-netting surrounding the trough or box G. I is a trapdoor in the roof of the car, through which its iceboxes may be lled. B is a slatted grating placed over the inner metal skin, b, of the iceported.

The boxes G are4 placed at the ends of the car over the air-dues F. They are in open communication with ice-box B. We fill the slatted box G with broken ice and salt, which are prevented from falling into the air-fines by the wire-netting H,which covers its sides and bottom and retains the ice until it is entirely melted. The upper portion, B, of the ieebox we fill with ice without admixture of salt, and preferably in large pieces. Theair circulates through the car in the manner shown in Fig. l by the arrows. The warm air entering the iceboxes through openings D at the top of the car is cooled first by passing over and through the ice in the boxes B, then is still further cooled by passing over and around the mixture of ice and salt in the boxes G,and then falling through the ilues F, in which it deposits much of its moisture, it is introduced with considerable impetus into the chamber A. The dues F should be metal-lined, and preferably provided with diaphragms, as described in the above mentioned Patent N o. 290,324. The freezing mixture of ice and salt in the boxes G cools the air much more than a simple icebox; but the rapid melting of this mixture would make its useincouvenient and to a large degree impracticable if it were used alone. lts melting, however,'is retarded, owing to the fact that the air before reaching it has already parted with much of its heat by passing over and through the ice in the box B. The airspace E, surrounding the box G, enables the current of air flowing through the box B to enter the due F without actually passing through the broken ice and salt, the air passing over and around the box G,and,having a large surface of Contact with it. The water formed from the melting ice may be allowed to escape through a trap, as shown in Patent No. 290,324, or in any convenient manner.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is-- l. In a refrigerating-car substantially as described, the ice-box B, situated at the top of the car, and having an opening, D, for the admission of air, in combination with the ice-box G, connecting with itas and for the purpose specified.

2. lin a refrigeratingCar substantially as de-4 IOO scribed, the ice-box B, situated at the top of G, having netting H on its sides and bottom, Io the oar, and having an 0pening,D, for the ztdund surrounded with an air-space, E, forming mission of air, in combination with the ice-box a continuation of the iue F, as und for the G, connecting with it, and the flue F, as and purpose specified. for the purpose specified. THEO. N. ELY.

3. In arefrigerating-oar substantially as de- J NO. W. CLOUD. scribed, the ice-box B, situated at the top of Witnesses: the Car,and having an opening, D, for the ztd- V. H. ROHRER, mission of air, in combination with the ice-box' I W. SARGENT, J 1.

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