USRE12474E - Drier - Google Patents

Description

No.' 12,474. BMSSUBD. APR. 24;l 1906. c. A. MATGHAM.

DRIBR.

APPLIGATION FILED MARlZG. 1906.

2 SHEETS-SHEET l,

. REISSUED APR. 24, 1906. c. A. MAIGHAM. A

DRIER.

APPLICATION FILED 13.26.1906,

2 SHEETS-SHEET 2.

@www WMS To all whom 2o.Fig. l; and Fig. 3 is a UNITED sTATEs PATENT OFF-f1CE.v 4

DRIER.

Specification of Reissued Letters Patent.

neissuednprn e4, rece. i

Original No. 783,970, dated February 2B, 1905. Application for reissue filed March 26, 1906. Serial No. 308,190.

13b .nutjl/ concern.-

Be it known that l, CHARLEs ARTHUR MATCHAM, a citizen of thel United States, residing in Allentown, county of Lehigh, kState of Pennsylvania, have invented certain linrovements in Driers, of which the following 1s a specification.

The object of my invention is to so construct an apparatus for drying raw materialsuch as lime, clay, cement, coal, or other material-that the products of combustion will first lpass around the shellof the cylindrical drying-drum and then pass through the cylindrical drum to the stack, as fully described hereinafter.

In the accompanying drawings, Figure 1 is a plan view of my im roved drier, showing the furnace and stack 1n section. Fig. 2 is a longitudinal sectionalA view on the line 2 2, transverse section on the line 3 3, Fig. 2.

A is the cylindrical drying-drum, preferably inclined, as shown in Fig. 2, and mounted on any suitable supports and rotated in any suitable manner. The central portion of the drier is surrounded by a furnace B, having in the resent instance two lire-chambers B B he inlet end of the drum A eX- tends into the base D', which su )ports the stack D, while the opposite end of the drum extends into a vchamber' E, through which the material is discharged. This chamber `E is connected to the upper portion of the furnace B by a flue F, which is preferably inclined, shown in Fig. 2, and of suilicient d alneter to carry the productsof combustion from the furnace into the chamber E, the products of combustion )assing through the drum A into theI base portion of the stack and through the stack, smthat the furnace B 'has la natural draft, drawing the products of combustion from the upper por tion of the furnace through the drum. The coupling with the 'furnace may be at any point desired; but .l prefer to couple the ilue to the furnace, as shown in the drawings.

The material isfed into the drum A through an inclined chute c and is discharged at the ropposite end throughthe chamber E into any suitable hopper or bin.

from this chamber E- l It will be seen by my invention drum A, which is, in fact, a kiln, middle portion 1s oughly dry the that as the rotates the heated to a degree to thormaterial traveling through the drum, while the products of combustion from the furnace are collected and pass through the fine F, into the chambcl1 E and i through the drum A, causing the material in l the drum to be heated directly bythe products of combustion, which finally pass out the inlet end of the drum to the stack, the l stack making the necessary induced draft.

l claiin 1. The combination in a drier, of 'an inclined drum, bearings at each end su porting l said drum, an annular rack on the drum by which it is rotated, a furnace inclosin T a ortion only of said'drum, a chamber wit w 'ch the outlet end of the drum communicates, an

outside flue extending from the furnace to the chamber, and a stack with which the .inlet end of the drum communicates, so that the products will pass around a portion of the drum, then through the ilue to the interior of the drum to the stack, substantially as described.

2. The combination in a drier, of an inclined drum, bearings at each end supporting said drum, an annular rack on the drum by which it is rotated, a furnace inclosing a or -Sov tion only of said drum, a chamber with w rich l the outlet end of the drum commun1cates,a

flue extending from thi` upper portion of the furnace to the chamber, and a stack with which the inlet end of the drum communicates so that the products of colnbustion will pass around the drum to the upper portion of the furnace, then through the ilue to the interior of the druln to the stack, substantially as described.

-In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

`monats ARTHUR MATCRAM.

Witnesses:

WILL. A. BARR, J os. H. KLEIN.

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