US1114248A - Stove and furnace. - Google Patents

Description

G. G. GAREY.

STOVE AND FURNACE.

APPLICATION FILED FEE-24, 191s.

Patented Oct. 20, 1914.

2 SHEETS-SHEET 1.

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Inventor 7 Attorneys Witnesses THE NORRIS PETERS Co. PHOm-L|THo.. WASHINGTON. D. C.

t G. G. GARRY.

STOVE AND FURNACE.

APPLICATION mum man, 1913.

Patented Oct. 20, 1914.

2 SHEETS-SHEET 2.

Inventor Attorneys To all whom it may concern UNITED s ATEs PATENT o F-ron.

GEORGE G. GAaEY, or INDIANAPOLIS, INDIANA.

s rovn AND FURNACE.

y Specification of Letters Patent. Patented Oct. 20, 1914.

Application filed (February 24, 1913. Serial N 0. 750,378.

that complete combustion is thus obtained.

A further object is to provide means whereby the air may be thoroughly commingled with the fuel close to the wall of the fire potso that the fuel will burn as efliciently close to the wall of the firepot, as at the center.

Another object is to provide a magazine for feeding fuel to the fire pot, means being employed whereby fresh air is admltted to the magazine at desired points and gases accumulating in the magazine are conducted downwardly to the fire so that puffing or explosion within the stove or furnace is prevented.

With the foregoing'and other ob ects in view which will appear as the descriptionproceeds, the invention resides in'the combi nation and arrangement of'parts and in the details of construction hereinafter: described. and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, "can be made within the scope of what is claimed, without I departingfrom the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings: Figurel is a central 3 vertical section through a' stove having the present improvements combined therewith, the top and bottom portions of the stove being shown in elevation. Fig. 2 is a section on line AB Fig. 1.. Fig.8 is a section on line CD Fig. 1. Fig. 4 is an enlarged vertical section through a portion of the fire pot, said section being taken through one of the air ports. Fig. 5is an enlarged horizontal section through a portion of the fire pot; Fig. 6 is a section on line E-F Fig. 1.

Referring to the figures by characters of reference 1 designates the fire pot of the stove, thesame being ofthe usual frustoconical form, the upper ortion of the wall of the fire pot being preferably directed in-.

wardly to a slight extent so as to overhang the lower portion of the fire pot, as shown at-2. This upper portion 2 is surrounded .by'anfair flue 3 which is substantially V- shaped in cross section and formed irithe portion 2 ofthe fire pot at regular intervals are upwardly extending slots 4 constituting air inlet ports through which air is adapted to flow from the fine 3 into the upper portion of the fire pot. As shown particularly in Fig.4, the bottom of each slot 4 is inclined downwardly and inwardly, as illustrated at 5, this bottom registering with the bottom of the flue 3 so that any ashes 'or. the like which may be deposited in the flue 3 will be free to gravitate downwardly along i the outer wall of the flue and thence onto the inclined bottom 5 of the slot.4 and into the fire pot. The slots 4 are preferably tapered at their upper and lowerends, as shown at 6 in Fig. l. Formed upon'ithe inner face of the fire pot and'between the ports4 are ribs 7 7 which extend from points above the slots 4 downwardly to points below the slots,

these ribs gradually increasing in thickness toward their upperends and having their upper ends rounded or inclined downwardly and inwardly, as shown at 8. Tl'1llS 'lt will be seen that fuel willbe held by the ribs out of contactwith the portion 2 of the fire pot and air Wlll thus be free to enter the fire pot'through the slots or ports 4 and between the ribs 7 while ashes, instead of drifting through the slots4 and intothe flue .3 will be free to gravitate between the ribs and into the lower portion of the, fire pot.

The bottom of the fine 3 is formed of a 7 web 9 outstanding :f'romthe. portion 2,'said web beingof zigzag form so asto form ridges 10 located midway between the ports 4 and valleys or depressions 11 formed directly back of the ports. In other words, the

web 9fand the walls of the flue 3cooperate to form a number of small hoppers each of which is designed to direct its contents downwardly to the bottom of the slot 4 arranged infront of the hopper. Flue 3' is provided, at any suitable point, with, an air intake'12 and this intake'maybeprovided with a; damper 13 of any suitable form whereby readily controlled. i

. i It :will be apparent, of course, that when fuel is deposited on the grate l4 and within thefire pot 1,,it will restagainstthe ribs '7 and thusbeheld practically out ofcontact the air. entering the flue can be with the upper portion 2 of the fire pot. Thus air admitted to the flue 3 through the intake 12 will be free to enter the fire pot through the various ports 4L and will com mingle with the fuel and flow thereover so a as to produce practically perfect combustion. pot slightly overhangs the fuel it will be seen that ashes will not gravitate through the ports f and into flue 3 but will, instead,

gravitate to the bottom of the fire pot. Thus the minimum amount of ashes will enter the ports l and the flue 3 and, as the bottom of the flue is made up of the zigzag web 9 ashes will not accumulate within the flue to a suflicient extent to interfere with the current of air. Instead, the ashes will gravitate along the inclined planes of the web and to the inclined lower ends 5 of the slots or ports 4 pansion of the fire pot along the line AB The structure hereinbefore described can be used either with or independently of feed mechanism likewise constituting a part of the present invention. This mechanism in eludes a magazine 15 supported, in any suitable manner, within the casing 16 of the stove or furnace at a point above the fire pot, this magazine being of any desired cross sectional contour and proportions and being preferably spaced equal distances from all portions of the casing 16. The magazine may be provided with a closure 17 of any preferred form at the top thereof, the closure in the present instance being slidable although it is to be understood that any other form of closure may be used. The lower end of the magazine is formed with a series of segmental recesses 18 forming outlets through which the fuel may be discharged radially within the fire pot, it being also possible to insert a poker or the like through any one of these recessesfor the purpose of spreading the fueL As shown in Fig. 1, the magazine is preferably gradually enlarged downwardly, this being efiected by providing a series of offsets 18 extending around the magazine. Thus it will be seen that as the fuel feeds downwardly toward the fire and gradually expands as heated, this expansion will be permitted without causing the fuel to bind upon the Wall of the magazine and thus.

As the slotted portion 2 of the fire choke the same and interfere with the automatic feeding or gravitation of the fuel to the fire. Extending entirely or partly around the upper end portion of the magazine is a flue 19, this flue communicating, at a point midway between its ends, with an air duct or flue 20 which extends radially from the magazine and downwardly along the outer side of the casing 16, said passage having an inlet 21 at its lower end and which may be partly or entirely closed by means of a damper 22 of any desired construction. Flues 24 are arranged along the outer side of the magazine 15 and extend downwardly to the bottom of the magazine, these flues communicating with the top flue 19. Thus it will be seen that air entering the flue 19 will flow downwardly through the fines 2a and will be directed against that portion of the fuel lying within the fire pot. Furthermore the air thus admitted to the stove or furnace will thoroughly mix with the gases produced by the combustion of fuel and result in the combustion thereof. One or more vents 25 may be provided inthe upper portion of the magazine 15, these vents discharging into one or more of the flues 24:. Thus should any gas accumulate within the magazine, it will be free to flow through the vent or vents 25 into one or more of the fines 2L and will thus be carried downwardly by the air circulating through the fines and will meet the gases arising from the burning fuel and be consumed.

Thus explosion or pufiing of gas within the magazine is prevented. Webs 26 in the form of imperforate partitions are provided in the wall of the magazine 15 near the lower end thereof and normally close communication between thelower portion of the magazine and the fines 24. This is true where hard coal such as anthracite is being used in the stove or. furnace. If, however, it is desired to use a softcoal, the webs 26 are broken out so as tothus form openings between the lower portion of the magazine and the fines 24L through which portions of the air circulating downwardly through the fines 24 will be free to pass downwardly into the fuel in the lower portion of the magazine. Thus combustion will be better supported and practically all combustible products will be consumed. The webs 26 are in the form of partitions cast integral with the magazine,

these partitions being imperforate. Unconsumed products of combustion will of course flow upwardly within casing 16 to the outlet 27 provided therefor.

It is preferredto form the magazine with 1 its lower end portion thicker than its upper "end portion. This has been shown in Figs.

1 and 6. This thicker lower portioncan be made separate, as shown in the drawings, or

can be formed integral with the remaining portion of the magazine.

What is claimed is 1. A magazine increasing in diameter toward its lower end, an annular flue atthe upper end of the magazine and having a fresh air inlet communicating therewith, a flue extending along the magazine from the annular-flue and down to the lower end of the magazine and having an outlet at its lower end, and a frangible web closing com-c munication between the flue and the interior of the magazine.

2. A magazine having annular offset portions forming interior annular steps for increasing the diameter of the'magazine toward its lower end, an annular flue at the upper end of the magazine, a fresh air inlet communicating therewith, a flue extending along the magazine from the annular flue downwardly to the lower end of the magazine and having an outlet at its lower end and a fresh air inlet at its upper end communicating with the annular flue, and a frangible web closing communication between the flue and the interior of the magazine.

3. In a device of the class described, a fire pot, a magazine supported thereabove, an annular flue surrounding the upper portion of the magazine andhaving a freshair inlet,

'flues extending downwardly along the outer side of the magazine from the annular flue and opening at their lower ends into the fire pot, whereby the burning of fuel Within the fire pot will set up a suction downwardly through the flues from the annular flue, there being a gas vent in the upper portion of the magazine and opening into one of the downwardly extending flues whereby gas generated within the magazine is sucked into said flue, and a frangible web closing communication between the interior of the magazine and one of the flues.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

GEORGE e. GAREY.

Witnesses:

R. E. HEMMETER, RAY APPLEGATE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. i

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