US42413A - Edwaed a - Google Patents

Description

E., A. SMITH.

Lime Khj.

Y Patented April 19; 18621.l

III- 1 er. washington. D. c

UNTTE STATES PATENT EDWARD A. SMITH, OF ST. ALBANS, VERMONT.

BURNING' LIME.

T0 aZZ whom it may concern:

Be it known that I, EDWARD A. SMITH, of St. Albans, -1n the county of Franklin and State of Vermont, have invented a new and useful improvement in the manner and mode of burning lime in a kiln of my own peculiar construction; and I do hereby declare that the following is a full and exact description thereoi", reference being had to the drawings accompanyin g, and to the letters of reference marked thereon, of which- Figure l is a perspective view, Fig. 2a halfsection, and Figs. 3 andetsections, oftire chamber and grates.

The nature of my invention consists in providing a way to burn lime more rapidly and economically than by any other by the application of heated blast to anthracite-coal tires in a kiln constructed for the easy and correspondingly quick delivery ofthe lime.

The kiln-stack cir a, Fig. 1, to be constructed of stone and brick fourteen feet square and ten feet deep, in which is the linie-pit Q, Fig. 2, in the center of the bottom of the stack, six feet in diameter and six feet in height, with an arched top terminating in the throat ofthe boshes I?, Fig. 2, opening intoit, which throat consists of a cast-iron frame eighteen inches square and two feet deep, to close which a sliding door ot' cast-iron across its base is operated from the outside, as seen at l), Fig. 1, by a rod attached, the entrance to the lime pit to be through a door, U, Fig. 1, four feet in height and eighteen inches wide, and an arched passage ot' the same dimensions as at B, Fig. 2, the depth ot the boshes R R, Fig. 2, to be three feet, and to be constructed with tire-brick, spreading from the throat tothe base ot' the. lining of the cupola, where they are six feet across. Ten feet from the bottom ot' the liniepit cast-iron plates in sections, as at N N, Fig. 2, surmount the structure, forming a foundation t'or the cupola E, Fig. 1,which is constructed of boiler-plate and lined with common brick, as M M, Fig. 2, and with firebrick, as seen at O O, Fig. 2, and is twelve i'eet in diameter at the base and seven feet in diameter at the top and fourteen feet high. Vithin the enlargement of the cupola at its base I con struct two circular tire-chambers three feet in height and two feet Wide and four fee-t long, with ash-pits one foot deep, two feet wide, and three feet long, as seen at E and G, Fig.

'1. The re chambers connect with the chainbers of the cupola by lines, as at F, Fig. 2, through its lining just above the boshes, the cupola to be surmounted by castiron plates, as at I I, Fig. l, thirteen feet across, bearing upon four columns, K K, Fig. 1, which stand upon the kilnstack, and upon which raised side plates, IL h, Fig. l, forming a hopper for the stone. Cast-iron pipes in form as seen at I I, Fig. 1, receive the blast, taking it over the escape heat down to the ashvpit Gr, Fig. 1, from which it enters the re-chamber through the grates It it, Fig. 4, thus applying a heated blast to ignited coal and forcing the intense heat thereby evolved upon a descending colp umn of lime stone in the shaft M, Fig. 2, by which it rapidly parts with its carbonic-acid gas and at regular intervals is drawn into the lime-pit O, Fig. 2, by the opening of the sliding door at D, Fig. 1, and, if necessary, poking `through the llues F, Fig. 2, after which, this door being shut, the tiring goes on, while the lime is being removed at leisure by means ot' a long-handled shovel operated through the passage B, Fig. 2.

I claim- 1. The application ot the heated blast to ignited anthracite coal in a kiln having a cylindrica-l cone shaped cupola., combined with a boiler-plate, providing room in the base for theiire-cham bers, allconstructed and arranged as herewith described.

2. The lime-pit and door in the throat ofthe l boshes, providing for the more rapid delivery of the lime, and forming a gage or measure by which to ascertain the amount drawn and to be drawn in the practical working of the kiln, all constructed as herewith described.

EDWARD A. SMITH.

Witnesses:

WM. H.v FANOR, J. H. BAXTER.

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