US320498A

US320498A - Drier

Info

Publication number: US320498A
Authority: US
Publication date: 1885-06-23
Anticipated expiration: 1902-06-23

Description

(No Model.)

W. J. POSSONS.

DRIER.

No. 320,498. PatentedJune 23, 1885.

WITNESSES A INVENTOR ORNEYS N. Parana mwuxhom w. Washingtqm b. a

UNITED STATES PATENT OFFICE-3.

NVILLIAM J. PQSSONS, OF CLEVELAND, OHIO.

DRIER.

SPEGIFICATION forming part of Letters Patent No. 320,498, dated June 23, 1885.

(No model.)

To (LU whom, it may concern..-

Be it known that I, WILLIAM J. POSSONS, of Cleveland, in the county of Ouyahoga and State of Ohio. have invented certain new and useful Improvements in Drying-Ftwnaces; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to furnaces for drying carbons, the object being to provide a furnace and attachments that operate automatically in receiving the carbons, passing them through the furnace, and discharging them, and that will do better work and with less labor than the devices heretofore used for this purpose.

Vith these objects in view my invention consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the manufacture of carbons for electric lights, in the latter part of the process, the carbons become saturated with water, and it is necessary to thoroughly dry" them before they are packed for the market.

I-Ieretofore rude devices for this purpose have been in use, the operations of which were slow and the results unsatisfactory, requiring a large amount of labor 011 the part of the operator in proportion to the number of carbons that were dried.

My improved furnace consists of a fire-box provided with grates, ash-pits, doors, &c., arranged crosswise of the structure, so that the firing is done on one side of the structure. A long horizontal fine, at right angles to the fireboX, conducts the products of combustion to the chimney via a side flue at the rear end. Through this flue and over the furnace pass endless chains, moving from the rear forward,

and returning through a recess underneath the furnace. At the rear end is an inclined hopper, in which the carbon may be placed in bulk, and from which the carbons are fed onto the endless chains by their own gravity. In front is a hopper or trough inclining from the chains downward, and into which the carbons are discharged by gravity, and from which the carbons may be removed in a large quantity. The chains are driven by suitable mechanism,

hereinafter described. The carbons entering the said flue at the rear end, where the heat is least, become gradually heated, and encounter a constantly-increasing, heat as they move forward until they reach the front, where the heat is such that all moisture is expelled, and the carbons issue from the furnace thoroughly dried. The actuating mechanism is so arranged that the speed of the chains may be increased or diminished at pleasure.

In the accompanying drawings, Figure l is a longitudinal vertical section of the furnace and flue and a portion of the chimney in elevation. Fig. 2 is a plan view, with the walls of the furnace, fine, and chimneys in section.

A represents the body of the structure, made preferably of brick.

B represents the furnace, provided with the grates b, and in the usual manner with furnace and ash-pit doors at b.

O is the flue with the brick casing arched above, as shown.

D is a side flue leading to the chimney E.

G are endless chains moving in the direction of the arrow, and passing over sprocketwheels H and H, and around the guidingwheel I and 1, and back through the reces J in the lower part of the structure.

The driving sprocket'wheel H is secured to the shaft h, the rear end of which is provided with the worm-gear h, engaging the wormK on the shaft 70, that is provided with thecone L for regulating the speed of the chains.

M is an inclined trough or hopper, arranged so as to discharge the carbons upon the chains.

N is a similar inclined trough, arranged to remove the carbons as they are discharged from the chains.

1? are tightening-pulleys for taking up the slack in the chains.

In operating the device the carbons are placed in the trough M, and roll onto the chains and are passed through a small opening in the rear wall, and in the position shown at S, and are carried along through the said flue and over the furnace, and pass through a suitable opening in the front wall and are dis charged into the trough N, having been thoroughly dried in the passage through the fine and over the furnace.

WVhat I claim is- 1. The combination, with a furnace having an elongated hot-air flue and an endless carrier moving in said flue, of a feeding-hopper located at or near one end of the horizontal flue, and a receiving-hopper located at or near the'opposite end of said flue, substantially as set forth. I

2. A drying furnace having a horizontal flue, the opposite ends of which are provided with openings, in combination with an endless carrier passing through said flue and open ings and returning under the furnace, pulleys located outside of the furnace and supporting the carrier, a feeding-hopper located outside of and at one end of the furnace and adapted to feed the articles to the carrier, and a receiving-hopper located outside of and at the opposite end of the furnace for receiving the tion, in the presence of two witnesses, this 16th day of February, 1884.

WILLIAM J. POSSONS.

Witnesses:

ALBERT E. LYNCH, CHAS. H. Donnn.