US482147A - Boiler and furnace setting - Google Patents

Description

(N-o Model.)

0. 0. AREY. BOILER AND FURNACE SETTING.

No. 482,147. Pat-ented se t'. 6, 1892.

INVENTOR :E M I M Fly 2 m a M; s K W W 7.0 V

UNrTED STATES PATENT QFFICEO CLARENCE O. AREY, OF CLEVELAND, OHIO.

BOILER AND FURNACE SETTING.

SPECIFICATION formng part of Letters Patent No. 482,14=7, dated September 6, 1892. Application filed December 10, 1891. Renewed August 12, 1892. Serial No. 442.855. (No model.)

To all whom it may concern:

Be it known that I, CLARENCE O. AREY, of the eity of Cleveland, in the county of Guyaloga and State of Ohio, have invented certain new and useful Improvements in Boiler and Furnace Settings; and I do hereby declare the following to be a clear and exact description of the invention, such as will enable others skilled in the art to which it pertains to thoroughly understand the same.

My invention relates to improvements in boiler and furnace settings, designed to prevent and consume smoke, and also, on account of making bettercombustion,to make a saving in the amount of fuel used. It consists of certain features of Construction, and in connbination of parts hereinafter set forth.

Heretofore it has been considered impossible to dispense With the black smoke where soft or bituminous coal is used for fuel, and in View of these facts I have devised the boiler and furnace settings illustrated in the accompanying drawings, in WhlCl1- Figure 1 is a transverse section through the fire-boX, and Fi'g. 2 is a lougitudinal section through the same.

A A A' is the grate, A' being dotted to in.- dicate the position of grate, the grate being removed at this end to show the pockets K k.

B i's a solid metal dumping-plate to drop the ashes into the pocket b.

b b is a sloping pocket to allow ashes to drop into the ash-pit.

C C O is the bridge-walL D D D is a fiat arch above the bridgewall.

E is a duet back of the bridge-wall D for the escape of smoke.

F is a duct for the introduction of heated air.

G is a duet for the gases from the ducts E, F, and O to pass into the miXing-chamber H.

H is the miXing-ehamber.

J is a boiler or root of furnace.

K K K are narrow pockets of about the Width between grate-bars opening into the large pocket 70.

k 70 is a large pocket in the side walls, whose bottom surface is somewhat below the bottom of the grate-bars and whose top surfaceis the widthof the ordinary space between grate-bars above the top of the grate-bars.

L is a clean-out hole connecting with the bottom of the duet F.

ZZ are doors to the clean-out holes.

M M is a chamber for the heating of the air supplied to the duet F. v

m is a door to regulate the quantity ot' air passing into the chamber M.

N is the ordinary combustion and soot-collecting chamber at the back of boilers and furnaces.

O is a duet for the escape of fiamefrom the fire ff;

ffis the fire lying on the grate.

P is an arch over the duct G, which is built up tight to the boiler or roof of furnaee, so that all smoke will necessarily pass into the duet G.

' R is composed of walls and filling to make a floor at the proper level for the chamber H.

S is a wall at the back of the chamber H to cause an eddy and consequently a more thorough mixing of the gases.

T T T are the iuclosing walls of the boiler or other furnace.

V is the front of the boiler or other furnace.

The fire having been started and a bed of incandescent fuel having accumulated on the grate A, reaching above the bottom of the arch D, fresh fuel is thrown into the furnace, when combustion takes place, in the follow ing manner: Air enters the large pockets 70 and passing up through the branch pockets K of the pockets 75 is heated to a very high temperature by passing against the sides of the fire, and then it enters the firebox over the surface of the fire and mingling with the gases improves combustion. From the body of the incandescent fuel ffa sheet of pure fiame passes out through the duct O and into the duet G. The smoke from the fresh fuel on the surface of the fire rises and passes over the top of the arch D, then down the duet E to where it iningles With the jet of flame from O and the jet of heated air from the duet F. The door m being open allows air to pass into the chaniber or duct M, where it receives heat through the ro'of n f rom the heated gases in the chamber N. This heated air passes onward and up through the duct F till it reaches the intersection of the ducts O, E, F, and G. Here the jet of flame from O,the smoke from E, and the heated air from F meet and pass into the duet G, and

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then into the mixing-chamber H, where they strike the wall S, thus being completely mixed, and the carbon of the smoke that comes down the duet E being thoroughly mixed with the heated air from F at a very high temperature caused by the flame from O unites with the oxygen of the air and forms carbonic dioxide, only a small part of the carbon escaping in a free state. The doors ll are always kept shut, except when cleaning, as they would allow cold air to enter the duet F. The dumpingp'ate Bis madepreferably solid, as too much unheated air reduces the temperature of the flame that passes through O.

I have reduced my invention to practice in all its more essential parts, and find that it burns soft coal with greater economy and less smoke than any apparatus which I have seen.

The essential features of my inventio are the pockets in the side walls and the ducts, walls, and chanbers arranged as heretofore described. The cleaning-doors l l and the dumping-plate B add to the convenience of handling, but are not essential.

What I claim is- 1. The combination, in the fire-box of a boiler or other furnace, of narrow ascending side pockets with a large lower connectingpocket whose axis is nearly parallel with the surface of the grate, with a du'ct at the back edge of the grate and near its level, with an arch or lintel directly over this duet that does not extend up to the boiler or roof of furnace, with a descending duct immediately behind this arch or lintel, with an ascending duet immediately below the descending duet, which is connected into a chamber at the rear underneath the rear combnstion-chamber, this under chamber connecting with the air out-` side by means of a regulating-door, with a nearly horizontal duet just in the rear of the duet from the back edge of the grate, with a chamber at the back of this duct which opens only into this duct and at its upper back surface, with a wall between the descending duct and the last-named chamber, resting upon an arch or lintel over the rear horizontal duet and extending up tight to the boiler or root' of furnace.

2. The combination, in the fire-box of a boiler or other furnace, of a duet from the back edge of the grate, with another duet intersecting the first duct and connecting at its top with the fire-chanber and at its bottom with a chamber connected with the outer air, with a wall over the first duet and in the rear of the second duct, which extends up tight to the boiler or roof of the furnace.

3. The combination, in the fire-box of a boiler or other furnace, of a bridge-wall runnin g above the grate-level,with a duet at about the grate-1eve1,with a dumping-plate formin g the floor of said duet, with a. wall slightly in the rear of the bridge-wall, rcsting on an arch or lintel and continuing up-tight to the boiler or roof of furnace.

4. The'combination, in the Construction of the combustion-chanbers ot' a' boiler or other -furnace, of two ducts` from the fire-chamber,

one above the other, with a duct passing from outside under the rear combustion-chamber, with a duct passing into the rear combustionchamber, all four ducts meeting at a common point.

CLARENCE O. AREY. VVitnesses:

OTIS C. BENTON, W. .T. WHITE.

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