US336720A - Kiln for - Google Patents

Description

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KILN FOR BURNING BRI KS, duo.

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W. JONES. 4 KILE PGR LURNING BRIdKS,

No. 336,720. Patented Feb. 28, 1886.

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UNITED STATES PATENT, OFFICE.

I VILLIAM JONES, OF SAN FRANCISCO, CALIFORNIA.

KILN FoaBiJRNiNc smoke, are.

SPECIFICATION forming part o Letters Patent No. 336,720, dated February 23, 1886.

A pplication filed July ll, 1F35.

To all who-m, it may concern:

Beit known that LWILLIAM Jonas, of the city and county of San Francisco, State of California, have invented an Improvement in Kilns for Burning Bricks, 82e.; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a new and useful kiln especially adapted for burning Portland cement, or other substances, with petroleum, gas, coal, or any suitable fuel; an'd my iuven tion consists of a kiln built in independent movable sections or parts within which the material to be burned is placed, the ends of each section being left open and a temporary joint or coupling provided between their adjacent ends, whereby they may be connected in one continuous kiln,which can 'be moved as a whole, and each section of which, after its contents are sufficiently burned, can be disconnected for discharging and reloading.

Referring to the accompanying drawings, Figure lis a longitudinal vertical section of my kiln. Fig. 2 is a plan of the saine. Fig. 31s a vertical transverse section. Fig. 4- is the same, showing a modification of shape. Fig. 5 is a transverse section showingl an outer tunnel.

I build the sections or parts A of the kiln of any suitable size or shape-if cylindrical, as shown in Fig. 3, by lining iron cylinders with iire-briek. The ends ofthe sections are left open, and openings a are formed `for ,the insertion of fuel. These are provided with tight covers c', which are kept closed when not required to be open for firing. The sections A are placed or built upon wheeled movable trucks or platforms B, which run upon rails C, laid for the purpose. As shown in Fig. 1, I closely connect any desired number of these loaded sections, thus forminga burning, heating, and drying chamber of uniform width and height, and of any required length.

To prevent the escape ot' heat or the entrance of cold air at the joint where the sections connect, I plaee around or upon the joint an iron band, D, tightly fastened on plastic fire-clay or other suitable substance. This band may be loose and fastened around the joint when two sections are connected, or it may be riveted to one end of each section, thus forming aiiange or socket into which the Serial No. 171,395. (No model.)

connecting end of the adjoining sect-ion. may be inserted.

The manner of operating the kiln is as follows: A number of sections are loaded and joined together into a suitable length. The ring is then commenced in one or more sections at once through apertures a, and when their contents are burned sufficienti y the eutire kiln is pushed forward, so that other sections are brought up to the tiring points, newly-loaded sections being joined tothe rear. llhe draft passing through thc burned sections assists combustion in the sections then on fire, and, passing on, partly burns, heats, and dries the connecting-sections. Vhen the burned sections are cooled sufficiently, they aredctached, discharged of their contents, reloaded, and ready to be again connected with the kiln, when it is pushed onward, as before. Then loading the sections with the material to be burned, sufficient space for the introduction and combustion of the necessary fuel is left in each section.

XVhen required to connect the kiln with the chimney, so as to obtain a greater heat than could otherwise be had, the chimney would be at the end of the kiln at which cach section' is connected and from which the kiln is forced onward to points of liring.

As shown in Figs. l. and 2, E is the chimhey-section, movable, as are the others, but provided with a llue, c.

At the inlet end of the kiln is a fixed casing or shell, M, extending the distance of a few scctions. This is separated far enough from the kiln to allow workmen to stand for the purpose of connecting the sections, and thus also retaining the heat while this operation is performed. i

As shown in Fig. 2, there is a switch-track, F, and the chimney-section is run back on this track while the freshly-loaded kiln-sections are pushed upon the main track and connected with the kiln, as described. Then the chimneysection is run back to its place.

When a very high heat is required, as for burning Portland-cement cliuker, an outer stationary tunnel,` G, may be built, as shown in Fig. 5, large enough to receive the sections and the trucks carrying them, and also of sufficient length to receive any required number. Openings g are made in the tunnel opposite IOC the points or openings for firing in the sections, so that fuel may be inserted.` The tunnel should connect at one eiid ivitiii thfehimn'e which is also the inlet end of the 'sec'ti ns forining the kiln. The other end is the outlet which supplies the kiln with air and from which the sections of the kiln are pushed out when the burning is completed. i

To provide for the ready renewal of firebrick lining or for convenience in loading and discharging, the sections forming the kiln may bcdivided horizontally, so that any portion of the section may be detached.

The advantage in the use of my kiln in burning Portland cement is in the sections of the kiln surrounding the charge and moving with it. The displacement ot' the charge, which shrinks about thirty-seven per cent. in Weight while burning, cannot thus interfere With the moving of the kiln, as it would do were the charge placed upon au open truck moving Within a stationary tunnel, as has heretofore been used in burning brick. Its advantages over the present method of burning Portland cement in intermittent upright kilns are,in the saving of fuel throughwaste Iheat being utilized., the air passing through the burned material to points of firing, thence through the material in the rear, partly burning, heating, and drying it before it isimoved onward; in the saving of fuel for drying-floor, the blocks of slurry after coming from pug-mill rcquirihg to be only dry enough to keep their form whil e being placed in the sections; in the savin of labor, handling the blocks of slurry andthe burned clinker, because ofthe sections of the kiln being loaded at the drying-floor, and the clinkcr being discharged from the sections at storagefloor, no intermediate handling and Wheeling, as at present; in the possibility of getting a more uniform burning, thus produc ing a better cement with little waste through dust or underburned material, and in being able by theA use of the sectional kiln to evenly distribute through the charge the flame and heat from petroleum, when it can be obtained at a sufficiently low price to justify its use.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, ism

l. A kiln comprising a number or series of detachable movable and independent sections or parts, Within which the material to be burned is placed, the ends ofeach section being left open, whereby when united a single continuous` chamber is made, substantially as herein described.

2. A kiln comprising a number or series of movable and independent sections or parts, the ends of each being open,and a temporary joint or connection between the adjacent ends of the sections,whereby they may be united in a single continuous chamber,or disconnected, substantially as herein described. 3. A kiln comprising a number or series of detachable movable and independent sections or parts, the ends of each being open, said sections being united to form a continuous chamber, and each provided Withopenings or apertures for ring, substantially as herein described.

,4. A kiln comprising the independent secn tions or partsA, having open ends and apertures for firing, said sections being united in a continuous chamber, the wheeled trucks B, on which the sections are mounted, and the bands D, covering the joints of the sections,

substantially as herein described.

5. A kiln consisting of the independent movable sections or parts A, having open ends, and adapted to be united to form acontinuous chamber,and to be detached, as described, and the movable chimney section E at the end of the series, substantially as herein described.

6. A kiln consisting of the series of independent movable sections or parts A, ljoining one another, as described, and adapted to be detached, the movable chimney-section E at the end of the series, and the iixed casing or shell M, substantially as herein described.

7. A kiln consisting of the series of detachable movable sections or parts A, having open ends and adapted to be joined together to form a continuous chamber inclosing the material to be burned, in combination with an encircling tunnel around the kiln, and ringapertures eorrespondingin tunnel and kiln,substantially as herein described.

In witness whereof l have hereunto set my hand. I

- XVILLIAM JONES. Yilitnesses:

S. H. N onnsn,

H. C. LEE.

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