US121588A

US121588A - Improvement in grain-driers

Info

Publication number: US121588A
Authority: US
Publication date: 1871-12-05
Anticipated expiration: 1888-12-05

Description

.CHARLES F. CHECHESTER.

Improvement in 'Grain Driers.

Patented Dec. 5, 1871.

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UNITED STATES PATENT Orrron,

CHARLES F. QHIOHESTER, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN GRAIN-DRIERS.

Specification forming part of Letters Patent No. 121,588, dated December 5, 1871.

To all whom it may concern:

Be it known that I, CHARLES F. OHIcHEsTER, of Brooklyn, Kings county, New York, have invented an Improvement in Drying Grain, and the following is declared to be a correct description of the same.

This invention has for its object the utilization of all the heat of the fire in drying the grain and the equalization of the action of the same upon the grain. The furnace employed is constructed so that the air, as it enters, becomes warmed by the sides of the furnace, and then mixes directly with the products of combustion and descends, so as to produce a plenum, and passes up the fines of the drier. The grain is contained in a vertical bin between two hot-air spaces, and across through the bin are A-shaped tables supporting the g ain. In one range the hot air from one flue enters beneath the tables through holes at one end and passes across above the grain, taking up the moisture and escaping by a range of pipes going across the other air-flue. to a chimney. In the next range of tables the direction of the air is the opposite way in order that the grain may be dried in all parts alike.

In the drawing, Figure 1 is a cross-section of the furnace, showing also part of the drying apparatus in section, and Fig. 2 is a section in larger size of some of the tables.

The furnace to is made with grate-bars 1), side walls 0, and a supply-door of any usual character. This is inclosed with side walls 0 and an arch, f, and from the back an opening, 1 passes into the hot-air fines h k at the sides of the grain bin I. The air enters between the walls 0 and r, and, passing over the latter, mingles in the upper part of the furnace beneath the arch f with i the products of combustion from the fire, and as these have to descend there will be a plenum that insures a uniform temperature of the air and gases as they pass away into the fines h k,

that are at a convenient distance above the exitduced near the edges of these tables to stiffen the metal and make the same less liable to bend under the weight of the grain. The ranges of tables i have openings 3 through the side of the bin to admit air from the flue h to pass in beneath the tables of such range and across the grain, taking up moisture from the same and heating the tables,and the air then passes by the tubes 1" across the air-space k and into the escape-chimney f. The air from the flue It passes the other way, going in through the openings 4 across beneath the tables 0, and by the tubes .sacross the air-space h to the chimney u.

By this construction the action of the heated air in drying the grain is equalized and rendered uniform throughout, which is not the case in the grain-driers heretofore employed, where the air passes in at one side, thence through the mass of grain, and off by another openin I am aware that atmospheric air has been min gled with the products of combustion and passed through a perforated table over which grain has passed, but in this case the grain is liable to be scorched and injured. In my apparatus the heated air and products of combustion commingle, and then equalize in a separate chamber previous to passing across the grain-bin and over the surface of the grain beneath the tables.

I claim as my inventionl. The furnace for a grain-drier, made with the double-side walls 0 c, arch f, and opening 1 for mixing atmospheric air with the products of combustion and passing the same directly into the drying apparatus, as set forth.

2. The arrangement of the iiues h It, bin 1, ranges of tables 1' o, and pipes r s, leading to the chimneys t a, as and for the purpose set forth.

3. The sheet-metal tables for a grain-drier, made as an inverted trough, with ribs in the sheet metal near the edges, for the purposes and as set forth.

Signed by me this 9th day of September, A. D. 1871.

CHAS. F. UHIOHESTER.

Witnesses:

GEO. T. PINCKNEY, OnAs. H. S1vnrn. (48)