US176999A - Improvement in coal-stoves - Google Patents

Description

PATENT DAVID C. PROCTOR, OF PEORIA, ILLINOIS.

IMPRCVEMENT IN COAL-STOVES.

Specification forming part of Letters Patent No. 176,999, dated May 2, 1876; application led March 4, 18776.

To all whom it may concern:

Be it known that I, DAVID C. Pnoorron, of Peoria, in the county of Peoria and State of Illinois, have invented new and useful Improvements in Coal-Stoves, of which the following is a specification:

My improvements relate particularly to that class of coal-stoves in which the fuel is stored in a magazine located above the lire-chamber, and fed therefrom to the fire by force of gravity as fast as consumed; and it consists in certain novel features of construction, combination, and arrangement, hereinafter more fully described and explained, whereby I am enabled to adapt the stove for burning hard as well as soft coal, in which, however, the advantages of burning soft coal are the greatest, for with this coal great difficulty has been experienced in preventing it from burning up in the magazine, as it becomes coked, and will not feed down. This is due to the construction of stoves in which the draftis generally upward and around the magazine, or in which the draft is taken out at so high a point that the coal in the magazine becomes heated, and expands to such a degreejas to prevent any feed, and, the coal becomingcoked, all the combustion possible is in the magazine, and the results are unsatisfactory. Y

Itis to avoid these difficulties that I have devised the broad flat-surface grate in connection with the down-draft dues, the effect of which is a comparatively cool magazine at all times, within a few inches of the re, the heat being taken directly away from the magazine, and at the same time carried around in such manner as will render it effective, as the draft is taken out on a line with the fire, and is not permitted to ascend, but is held down to near the door until most of the heat is exhausted, and making'abase-burner as well as a base-heater, reference vbeing had in the de# scription to the accompanying drawings, in whichl Figure lis a longitudinal sectional elevation taken through the middle of a stove embodying my improvements; Fig. ,2, ay partial transverse section, showing the arrangement ofthe base-lines and the grate; Fig. 3, a horirzontal section taken above the grate; Fig. 4, a vertical section, showing the manner of dumping the grate by partially withdrawing it; Fig. 5, a detail, showing the front opening, through which the oinders, Sto., are raked from the grate without withdrawing the latter; and Fig. 6,- a section of the same.

A A is the main body or stove proper B, the magazine, of cylindrical, oval, or other suitable form, superimposed thereon and conimunicating freely therewith. This magazine is of simple construction, consisting, essentially, of an upright hollow barrel of cast or heavy sheet metal, closed at the top, so as to completely cut off the air, and thus preclude combustion of the contained fuel. For this purpose the ordinary sliding valve and laterally-swinging top (surmounted with a vessel for water, or an appropriate ornament) may be used. The lower portion of cylinder B extends to within a proper distance of the surface, upon which is delivered the fuel fed to the lire. The .cylinder B is supported upon the top G of the stove by a ring or flange, D, cast in one piece with, or otherwise rigidly secured upon, the barrel B, and'projecting outwardly therefrom, and resting upon a base,

F, projecting upwardly'from and rigidly secured to the top C, and of greater diameter than the barrel, to which it corresponds in form, to make the space F2 between it and the cylinder. This base F has formed in it numerous openings, ff, for receiving panes of mica or isinglass, commonly so called. This series of openings extends completely around the base F, and the light of the fire within, coming up into the space'F2 between the lower portion of the barrel B and the base F, adds to the cheerful and attractive appearance of the stove, and serves to indicate the condition of the fire.

The base A I prefer to make of a square or oblong form, and it is of much greater area horizontally than the barrel or magazine B. With the view, however, of preventing the heat from coming in contact with the magazine, I make the portion -A' above the plane' of the grate of an upwardly receding or tapering form, and the'top C also to rise from the edges inwardly to the base F of the barrel or magazine, and may be formed with appropriate ornaments, to improve its appearance and extend the radiating-surface.

Gis the door of the ash-pit, f rmed in its base, at one end thereof, below he plane of Frron the grate H, while the upper draft Gr2 is above the door and the plane of the grate. rEhe lower draft may be made in any manner that will suit the purpose.

The grate is made in three sections, H I I,

the middle one being made removable, and

sliding longitudinally in guides or grooves, and capable of being shaken in that line, to separate ashes and clinkers, and provided for this purpose with a link, K, accessible through the door. or which may project through the door, and the grate be drawn out far enough to be dumped.

As the section H, or grate proper, runs from end to end of the stove, its motion causes fresh coal to descend upon the fire, and spreads the lire over the whole surface of the grate; but it can be removed without difficulty, and cleaned of adhering products of combustion, by drawing it out wholly or dumping it forward.

llhe side sections I I need not be removable. They may, however, be so constructed,` it' preferred, but do not receive any shaking motion to clear them, as they are of small area, and the coal resting thereon will be suf'- ciently disturbed by the shaking of grate H. The ashes and other matters which fall through the bars of the sections I I fall upon the inclined sheds L L of the base-dues M, now to be described.

In order that as unich of the heat as possible may be conducted away from the smoke, gases, Src., arising from the burning fuel, and radiated through the outer walls of the stove, and thus utilized, I form upon the interior of the base, at each side thereof, and in the angle formed by the walls and bottom, a base-due, M, formed at the end next the forward end of the stove'with an upright section or divingilue, M2, reaching a suitable distance above the plane of the grate H I I, and re thereon, and communicating at the other with the chamber N, whence the currents ascend through the flue O. AThis chamber also com-` municates directly with the re chamber, through an opening, P, in the rear partitionwall, which is adjusted by means of a damper, Q, to be opened when direct draft is needed.

When the iire is burning well, the damp` er may be closed and the current directed through the diving-dues, the external walls receiving heat from it during its passage, and radiatingit to the air of the apartment in: which the stove is placed. This is of much importance.

In rooms heated by base-burning mstoves in general the lower stratum of air, for a foot or more above the floor, tends to remain cold.

The tendency of heated currents ot' air to rise prevents the displacement `of this 'cold stratum. The base o f the stove itself remains cold, except when the fire is atits height. An arrangement of devices for detlecting the currents to the base not only extends the radiatin g-surface thereof', and consequently its econom y in the consumption of fuel, but heats the lower portion of the room, preventing dampness, and permitting the occupants to conveniently warm their feet.

At the 'forward end of the` stove, within convenient reach of the hand, is an opening,

I2, formed in a fixed front portion of the grate, closed by Ya removable` lid, R, for permitting the convenient removal of coal, clinkers, stones, and other matters, and so arranged as not to interfere with the reci proeation or re moval ofthe grate H. A removable drawer ing out of the stove when necessary. The

use of a tire-pot is, moreover, dispensed with, as I design it more particularly for the consumption of soft coal.

In Fig. 4 is shown the method of dumping the grate, to effect which, it will be seen, the cover It is removed from its position in front of the grate, and the latter drawn forward through the lower doorway sufficient to clear the guide-plate a, when it is tilted down i'n the opening at the front, and brings the cinders in line with the openings I2, formed at the front, in line and on a level with the grate H, in which position the grate forms an upward incline from this opening, and the cinders and ashes Vare raked from the grate and fall through such opening. This clearing of the grate is effected through the upper door G2- by meansof a rod or scraper.` Generally, however, it is only necessary to clean the grate by shaking it, and then drawing the cinders and i ashes over the grate to the front opening, and in which case the grate is not drawn out beneath said opening; but the grate may be withdrawn from its guideways through the front door, if desired, and when so withdrawn the side grates can be readily cleaned into th ash-pan. 4

The lon g side grates I I incline to their junction with the long middle grate H.

Thespeeitic construction of the grate herein described forms the subject` ot' a separate patent to me, bearing even date herewith.

I claim- 1.. The combination of the oblong base A, provided with a grate of fixed and movable sections, of length and width equal to the base, with the top C, base F, and the magazine B, constructed and arranged substantially as herein set forth.

2. The base F, secured upon thetopO, and serving as a support for the barrel or 'magazine B, said base F being made of greater diameter than the magazine, and having between it and the magazine the space F2, and provided with the window-lights ff, and combined with the oblong broad grate H I I, substantially as and for the purpose setforth.

The combination, with the base A, pro vided with an elevated longitudinally-reciproeating grate, H, and fixed side grates I, of the side base-hues M, immediately beneath the side grates, and having their diving ends M2 above the plane of the grate, substantially as herein set forth.

4. The combination, with the front-side diving-flue M2 and the rear directdraft opening P, both arranged above the grate, with the magazine arranged between and above these direct and indirect draft openings, as herein set forth.

5. rIhe combination, with a longitudinally-V nature in the presence of two Witnesses.

DAVID C. PRGTOR.

Witnesses:

, JNO. E. HUNTER,

FRANK F.' PRoo'roR.

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