US690796A - Drier. - Google Patents

Description

Patented 1an. 7, |902. s. w. TBAMMELL s. w. Manu-PHE.

D R l E R.

(Appumion med Apr. 27, 1901.)

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(llo I Indel.)

. V uuvzntcws f GW 711195110709@ UNTTED STATES PATENT OFFICE.

GEORGE WASHINGTON TRAMMELL AND WILLIAM MCDUFFIE, OF ROME,

v GEORGIA. l

D'RIER.

SPECIFICATION forming part of Letters Patent No. 690,796, dated January 7, 1902.

Application tiled April 27, 1901.

- To all whom. it may concern:

Be it known that we, GEORGE WASHINGTON TRAMMELL and WILLIAM MoDUFFIn,citzens' of the United States, residing at Rome, in the county of Floyd and State of Georgia, have' invented new and useful Improvements in Driers, of which the following is a specification.

This invention relates to improvements in` driers used for 'drying brick,flumber, or the like`1naterial.

The object of the invention is to 'provide means for equally distributing heat in the drying-chamber to the material placed therein.

A further object of the vinvention is-to provide in a drying-kiln a seriesof i'lues which 'are connected to a single furnace, whereby the heat is materially assisted in being equally distributed. A further object of theinvention is to pro- -vide a drying-kiln wherein the products of combustion from the furnaces do not come into contact with the material being dried.V

Many other objects and advantages will be hereinafter referred to and be particularly pointed out in the claims.

In the drawings, Figure 1 is a side view of the improved drying-kiln. Fig. 2 isasection on an enlarged scale, showing more clearly the details of construction of the iiues. Fig. 3 is a top plan View with parts broken away to disclose the construction of the iues. Figs. 4, 5, and 6 are transverse sections on the lines 4 4, 5 5, and 6 6 of Fig. 3. Fig. 7 is a detail view of a portion of the roof, showing the details of construction. thereof.

The same characters refer to like parts in all the figures.

. l represents the outer casing of the dryingchamber, 2 the furnaces, and 3 sheds or coverings at each end of the kiln.

The drying-chamber consists of the side walls or casing 1, floor a, and roof b. The roof is made up of the usual rafters c, and on the under side thereof is a covering of corrugated sheet metal d, provided with a layer of sand d, and on the tops of the rafters are secured tight-fitting boards e, and over this is placed some fireproof material.

The furnaces 2 are each composed of side 4 Serial No. 57.729. (No model.)

flues 9 are preferably made below the surface, are lined withbrick, and run entirely throughthe kiln, and all enter a chimney 10, which is common to the whole set. y

In each of the flues 9 adjacentthe furnace is a central partition 13, extending a suitable distance into the kiln, said partitions supporting a layer of brick 14, theremainder of the ue beyond the brick 14 being covered with sheet metal, as at 15. The purpose of covering the flues with brick at a point adjacent the furnace is to prevent the action of the heat destroying a lighter material, it being remembered that at this point theheat is th'e lmost intense. Onfthe other hand, after the covering of brick is passed the intensity of the heat has somewhat diminished and the :influences will not be such as to destroy the metal covering; rather will a radiating-surface be formed. It will therefore be seen that while the heat is greatest atthe furnaces it does not escape as rapidly as it will when the sheet-metal covering is reached. -Hence an even and uniform temperature can at all times be maintained in the drying-chamber.

Asecond arch 5a is built over the arch forming thetop of the furnace,and'fbetween the two an air-space 16 is formed, communicating withthe atmosphere through an opening 17, which is controlled by a damper 19. This air-space at the rear communicates with a flue 19a, located over the combustion-fines, and opens into the kiln.

At the opposite end of` the kiln and in the roof thereof is the chimney 18 forcarrying 0E the water-smoke and causing a complete circulation of air to the material being'dried. The chimney is built of such heightas to create a suicient draft, at the same time not to circulating the heated air through the kiln, a series of ventilators 19 are arranged ata point behind the chimney 18, said ventilators being of such height as to not materially affect or draw from the chimney.

Extending lengthwise of the kiln are a suitable number of tracks 20, and cars 21 are designed to run thereon, and at each end of the kiln are doors 22, which work up between the walls of the casing.

The operation of the improved drying-kiln is substantially as follows: The cars are brought up to the receiving end 23 of the drying-chamber, the door 22 being opened, and the car is pushed in on the tracks 20, and by reason of said tracks inclining a little the car will roll down toward the delivery end 24. After a suihcicnt number of cars carrying the material to be dried have been placed in the drying-chamber the door 22 is closed and the lires kept going. The heat from the furnaces passes through the lower flues to the chimney 10, and in so doing it is equally disseminated. At the same time the damper 19 is opened, and air from the atmosphere is admitted to the air-space 16, and by the time the air reaches the drying-chamber it becomes thoroughly heated, and this heated air passes through and around the material being dried and absorbs the moisture,which is carried off through the chimney 18 and the ventilators 19X.

Dampers 25 are provided in each fiue to regulate the exit of the products of combustion and at the same time assist in maintaining a predetermined degree of temperature in the drying-chamber.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. An apparatus of the class described, comprising a drying-chamber, furnaces, combustion-filles leading from said furnaces and extending under the drying-chamber, airl1eatingchambers,flues arrangedimmediately above and in proximity to the combustionflues and running parallel therewith, said flues communicating with air-heating chambers and the drying-chamber, tracks situated above ihe flues, and means to support and carry the material being dried.

2. An apparatus of the class described,

comprising a drying-chamber, a plurality of furnaces outside of and below said chamber, combustion-dues branching from said furnaces and running entirely under said dryin g-chamber, a chimney common to all of said fiues, an air-heating chamber in each furnace, fiues located aboveand in alinement with the combustion-fines, said ues commup nicating at one end with the air-heating chambers, and their opposite ends extending Within and communicating With the drying-chamber, a chimney communicating with the drying-chamber, tracks located above both sets of iiues, and means for supporting and carrying the material to be dried.

3. An apparatus of the class described, comprising a drying-chamber, a furnace having an air-passage in its Walls, combustionflues communicating with said furnace and extending throughout the length of the drying-chamber, a partition in said combustionflues extending from the furnace to a point Within the drying-chamber, a layer of brick forming the top of the fiues and supported by said partition, a layer of sheet metal covering the top of the remainder of the fiues, and a fiue opening at its inner end into the drying-chamber and communicating at its opposite end with the air-space formed in the furnace, substantially as described.

4. An apparatus of the class described comprising a drying-chamber, a roof covering said chamber, said roof consisting of a covering, a corrugated metallic ceiling, means forsu pporting said ceiling and a layer of sand covering the top of said corrugated ceiling, a furnace, a series of iiues under the-drying chamber which communicate With the furnace and the atmosphere, and means for circulating heated air through the drying-chamber, substantially as described.

In testimony whereof We have hereunto set our hands in the presence of two subscribing witnesses.

GEORGE WASHINGTON TRAMMELL. WILLIAM MGDUFFIE. Witnesses:

G. E. MADDOX, O. E. CARPENTER.

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