US180113A - Improvement in brick-kilns - Google Patents

Description

W. S. COLWELL. BRICKLKILN.

Patented July 2.5, 18116.Y

NFETERS. PHOTO LIYHOQRAPH WILLIAM S. GOLWELL, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN BRICK-KILNS.

Specin'cation formingr part of Letters Patent No. 180,113, dated'Jnly 25, 1876 application filed May 19, 1875.

To all whom it may concern Be it known that I, WILLIAM S. CoLWELL, of Pittsburg, ill the county ot' Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Brick-Kilns; and I do hereby declare that the following is a full and exact description thereof, reference heilig had to the accompanyingdrawings and to the letters of reference marked thereon.

My invention rela-tes 'to an improvement in kilns for burning brick, and consists in providing each end ofthe lirearch with an adjustable damperordoor, Wherebytheheat in the several parts of thekiln can be controlled With ease and' To enable others skilled in the art to make and use my invention, I willv proceed to describe its construction and operation.

In the accompanying drawings, which form part of my specication, Figure l is a perspective view of my improvement in brickkilns. Fig. 2 is a vertical section of the same at line y in Fig.1. Y

A represents the kiln, which is of ordinary construction, excepting that its fire-arches B are furnished with dampers C, which have their chambers in Aabutments D. ments impart strengthA to the side Walls of the kiln, andby the use of the dampers the operator can control the heat in all parts of the furnace. The dampers are constructed of lire-tile, and are furnished with notched stems c. 0n the side Walls of the kiln are secured projecting ribs j', constructed of iron. These ribs are used in connection with the notched 'rods or stems e for holding the dampers up in the desired position. g represents sections of the grate-bars ordinarily used in fire-arches. In the process of burning brick in the ordinary kiln, it is impossible to secure a uniform degree of heat in all parts of it, and therefore it is impossible to properly burn the brick, and consequently a great loss of fuel, labor,and brick follows the use of such kiln,-and the common mode of burning the brick therein. By furnishing each end ofthe fire-arches of the kiln with dampers, as indicated at C, the operator is enabled to control the tire in the several fire-arches B so as to secure a uniform degree of heat in all parts vfore employed for that purpose.` A use of the dampers G at each end of the fireofthe kiln by the proper manipulation of the dampers C.

In the process of burning brick in the ordinary kiln it is often the case that the brick in that part of it directly over the fire-arches B2 and B3 are vsubjected to a great degree of heat, while those over the arches B1 and B4 are subjected to a low degree of heat. At other times the greatest heat is at one side, 4or at one end or one corner of the kiln, which condition of things is due to the heat taking the lead to said parts; and it often requires a great amount ot' labor, judgment, and skill on the part of the operator, and a large amount of fuel, to change this lead of the heat and direct it to other parts ol' the kiln most needing it, and it is almost impossible for him to distribute the heat uniformly through all parts of it by the'means hereto- But by the arches, the operator can, at his pleasure, and with -ease and facility, increase or diminish the heat in any part of the kiln, or distribute it uniformly through all partsof it. For eX- am ple, if the heat is greatest at one side of the kiln, the dampers are closed down on that side and raised up on the other side of it, and thereby lire across the kiln 5 or, if the heatis greatest at one--end of the kiln, the d ampers are closed down at that end, and the dampers of the arch at the other end raised so as to cause a blow77 in that end only. If the heat in one corner of the kiln is low, and it is desirable to increase it there, the dampers are all lowered except that corner.

From the foregoing description it will be readily understood how to manipulate the dam pers so as to increase or diminish the heat in any part of the kiln, or distribute itevenly, .through all parts of it, whereby the brick may in the .process of burning them be subjected to a uniform degree of heat, and thereby produce better'v brick, and at less costfor fuel and labor.

I am aware that the mouths of tire-arches of kilns have been provided with doors, gates, Ste., as may be seen in the patents to J. F.

Speight, July 4, 1854, and to R. A. Smith, November 19, 1872; and I do not, (therefore,`

claim the device specified, broadly, but in con firefarohes of the kiln, substantially as `and tradistinution to thepatents quoted. A for the purpose hereinbefore described and I claim as of my inventionset forth. In an ordinary brick-kiln, in which the burning of the brick is conducted from the arches, I Witnesses:

the abutment D, provided with the adjustable' FRANCIS TORRANGE,

dampers U, in cornbinationwvith the Walls and N. B. HATCH.

W. S. COLWELL.

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