US224521A - Timothy c - Google Patents

Description

T 0. EASTMAN. I Refrigerating Apparatus.

No. 224,521. Patented Feb. 17, I880.

ILFETERS, PNOTO-LITHOGRAPHER. WASHXNGTON. D C.

UNITED STATES PATENT OFFICE.

'TIMOTHY O. EASTMAN, OF NEW YORK, N. Y.

REFRIGERATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 224,521, dated February 17, 1880.

Application filed April 23, 1879.

To all whom it may concern:

Be it known that I, TIMOTHY G.- EASTMAN, of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Refrigerators or Cooling Apparatus, of which the following is a specification.

This invention pertains to certain improvements in refrigerating apparatus for the preservation of meats and similar perishable articles either in store or market or in transit; and the invention consists in the combination of a preserving-chamber or chill-room with a circulating system of pipes and equalizingchambers, so that a cold or cooling liquid may be continuously circulated from a reservoir throughout the chill-room in such a manner that the air coming in contact with the cold from the circulating agent will be cooled, and thereby act as an eleni'ent of preservation to the articles exposed in the chill-room, as will hereinafter appear.

usual manner, of double thickness, with a deadair space between them, or with some non-conducting element interposed, as asbestus, haircloth, mineral wool, or other suitable non-conducting substance or agent.

The floor, as at B, of the saidcompartment or chill-room may be inclined to apoint where y a drip-pipe or valve may permit the escape of the water of condensation from the room.

At suitable points in the said compartment are placed cylinders or upright chambers, as at O, to receive and hold the cooling-liquid, which is formed in and supplied from a reservoir or tank, as at D, which is located above the cylinders or chambers C, so that the cold liquid, by its own gravity, will descend and circulate into and through the chambers or cylinders by the pipes E and 13, which connect them with each other and with the reservoir and the pump, which is shown at G, and which may be used as an agent for increasing the circulation when it is desired to make the action more active than would be caused by the natural circulation of theliquid by its own gravity. i

As shown in the drawings, the upper end of the first cylinder is connected with the bottom of the reservoir D by a pipe, as at E, which ex-fl tends down into the cylinder or chamber C, so as to conduct the cold liquid down into the center of the mass, so thata circulation of theliquid in the cylinder or chamber will be produced in reversed currents. The colder liquid being forced down through the center will displace the warmer, next to the exterior of the chamber, which, as it rises, will become cooled by meeting, to a greater or less extent, the cold descending current, and thus render the temperit is again broughtih contact with the ice, or;

other cooling agent, and thence returned into the equalizing-chambers, as already explained.

Thesechambers may be made in an oval or flattened form instead of cylindrical, as here shown; but in Whatever form they may be made it is important that theyshould be much. larger than the pipes which connect them to the reservoir and to each other, in order that a return current may be caused in each of them to equalize the cold within them.

At K are shown flanges projecting out from the chambers G, which serve to cause eddies in the air as it comes in contact with the surfaces of the cooling-chambers, and thereby increase the more general circulation than if allowed to descend the entire length of the column or chamber without being disturbed.

An outlet or overflow pipe may be attached.

to the last chamber in the system, as shown at L, and it is provided with a stop-cock, so that it may be opened to let the air escape from the apparatus when first charged, or to serve as an overflow whenever it might be desired to let the liquid out of the apparatus for any purpose Whatever. Stop-cocks may also be attached to the lower ends of each of the chambers O, to draw off the liquid from them when desired.

Instead of the pump being so connected as to lift the liquid again into the reservoir, as shown and described, it may be so connected as todraw the liquid from the reservoir and force it out through the pipes and equalizingchambers, and return it again to the reservoir. In this case the reservoir may be located anywhere convenient for the tubes or pipes to be connected with it.

I am aware that an apparatus for cooling air has been constructed of several open boxes containing ice and salt, connected with each other and with a pump located below the boxes by means of pipes or tubes, for drawing the brine from a box at one end of the series and forcing it up into a box at the other end, for causing a continuous circulation, and such I hereby disclaim. These open boxes permit contact of the air in the refrigerator with the refrigerating-liquid, which is objectionable on account ofraising the temperature of the liquid and rendering it less effective, and as com municating moisture to the air, which it is desirable to keep as dry as possible. My refrigerating-chambers being closed, these objections are overcome.

Having thus described my invention, I desire to claim 1. In a refrigeratingapparatus, the combination, with the chill-room or preserving-chamber, of a series of upright closed chambers arranged around and within said chill-room, an elevated reservoir or tank containing the 0001- ing-liquid, a pump connected with said reservoir or tank, and pipes which connect with thepump, the reservoir, and the upright closed chambers for circulating a continuous supply ofcooling-liquid throughout the upright closed chambers and returning the same to the ele-- vated tank, the pipes connecting the chambers leading from near the top of each chamber into and to near the bottom of the succeeding chamber, in order that thorough circulation may be caused in all and their surfaces uniformly cooled, all substantially as and for the purpose described.

2. The combination, with the reservoir or tank D, pump G, chill-room A, and series of upright closed chambers arranged around therein, of a pipe, E, connecting the reservoir and one of the upright closed chambers and leading within and to near the bottom of said chamber, pipes F, connecting said chamber with the remainder of the series, each of said pipes leading from near the top of one chamher into and near the bottom of the succeeding chamber, and the return-pipe H, connecting the pump and the last of the series of chambers together, the said pipes E, I and H each extending down into the upright closed chambers, substantially in the manner and fo the object herein set forth.

8. In a refrigerating apparatus, substantially as hereinbefore described, the "ertical chambers or cylinders (1, provided with the flanges K, as and for the purpose set forth.

TIMOTHY G. EASTMAN.

Attest:

BOYD ELIOT, JOHN W. RIPLEY.

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