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Publication numberUS2296545 A
Publication typeGrant
Publication dateSep 22, 1942
Filing dateOct 21, 1939
Priority dateOct 21, 1939
Publication numberUS 2296545 A, US 2296545A, US-A-2296545, US2296545 A, US2296545A
InventorsTichbourne George A
Original AssigneeTichbourne George A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2296545 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Sept. 22, 1942. s. A. 'ncHBouNE FURNACE mled'oct'. 21," 1959 s sheets-sheet 1 /NVE/v TOR .Sept 22, 1942- G. A. TlcHBoURNE 2,296,545

FURNACE Filed Oct. 21. 1959 3 Sheets-Sheet 2 Je .f2 J2 /5' T-- I v J2 1? /z o f l /J l (O) /f le y F F F l o 3J g o J6 I ZZ 2l Jj' o "/t r .4..

di l ///9 v A '9 'i ik :v L', cf? J5 .ff 4 .3@ FEF- j 4J -v /6' y 39 .9 4J y if /NVE/V'TOR GAT/CHBOURNE.

Sept 22, 1942 G. A. Tlci-lBouRNE' -2,296,545

FURNACE Filed Oct. 2l, 1959 5 Sheets-Sheet 5 /N VEN TOR GAT/CHBOURNE.

Patented Sept. 22, V1942 FURNACE George A. Ticlibourne, Port Arthur, Ontario, Canada Application October 21, 1939, Serial N0. 300,625

4 Claims.

One of the objects of my invention is to provide, in a hot air furnace, efficient means for imparting to a body of heated air the requisite degree of humidity for comfort.

A further object of my invention is to provide a combination hot air and hot water furnace in which a domestic establishment for instance, may be kept warm by hot air in those parts where this can be most efficiently done but at the same time may be kept warm by hot water radiation in those parts which for instance are far removed horizontally from the furnace or in those parts which have a northerly exposure or are in any other Way, difficult to heat by hot air.

A further object of my invention is to provide a furnace which is outstandingly economical in fuel consumption and in which a far higher thermal efciency is possible than with the conventional type of furnace.

A further object of my invention is to provide a furnace which is in all respects practical to manufacture and low in price and which is easy to install.

With the above more important objects in view and such other minor objects as may appear as the specification proceeds, my invention consists essentially in the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawings, in which:

Figure 1 is a section on the line I--I of Figure 3.

Figure 2 is a frontal elevation of my furnace.

Figure 3 is a section on the line 3-3 of Figure 1.

Figure 4 is a section on the line 4-4 of Figure 1.

Figure 5 is a section on the line 5 5 of Figure 1.

Figure 6 is a section on the line 6 6 of Figure 1.

Figure '7 is a sectional elevation illustrating my combination hot air and hot water furnace.

In the drawings like characters of reference indicate corresponding parts in the different iigures.

In its essentials my invention comprises a rectangular rebox A surrounded by a rectangular wall of sheet metal B, which is spaced therefrom to provide a hot air jacket, the sheet C, however, being spaced from the opposing sheet D of the rebox by a considerably greater distance than the remaining three sheets to provide what I will refer to herein as an adjacent hot air chamber E through which the hot products of combustion from the rebox travel through the W- shaped fire path F formed by the three vertical hollow walls and the downturned U-shaped y scribed in further detail later.

transverse walled passage G. I also provide a draft passage I-I and after passing through the W-shaped re path, the hot products of combustion are turned back into the horizontal and proceed over the crown sheet J through the hori- Zontal reverse angulated fire passage K (Figure 5) which surrounds a vertical open ended hot air duct L (Figures 1 and 5), extending around which is also a rectangular humidifying pan M, this pan being superimposed above the fire passage.

Proceeding now to describe my construction in Adetail and considering rst the hot air embodiment of Figure 1, it will be seen that the frontal surface of my furnace I is provided with the usual rebox door 2, ash clean-out 3 and also -withthree soot clean-outs 4, 5 and 6, to be de- Within the firebox are the usual grates l and projecting from one side of my rebox and through the wall 8 is a suitable damper 9, for which I claim no novelty.

My firebox A is divided into two compartments by means of the hollow flrebox partition II), which extends at right angles to the plane of the iirebox gate 2 or the firebox opening therebehind, this partition being vertical and communicating with the posterior side I I of the surrounding hot air space l2 (Figure 3) enclosed by the Wall or jacket B, a plurality of parallel and vertical open ended tubes I3 extending through this partition, such tubes being provided to take in air from the ash pit I4 through the lower end thereof and discharge it into the rebox above the normal level of the fire bed to increase combustion by this means. It will also be understood that if desired, only one side or the other of the partition may be fired as in mild weather for instance, while if necessary to distribute the fire bed from one side to both sides of the partition, such may easily be accomplished by operation of the grates 'I as described in connection with my United States Patent No. 2,089,450 above referred to.

Extending right around my rebox and spaced therefrom is a rectangular wall of sheet metal, one surface of which I have already designated with the numeral 8, the posterior sheet being enumerated I5, the remaining sheet I6 and the front sheet Il, and it will be noted that the sheet I5 is spaced considerably further from the central Wall I1 of my reboX A than is the sheet 8 from the opposing side wall I8 of my flrebox ing from the frontal surface of my furnace and it is to be understood that when the draft is in the open position illustrated in chain lines in the accompanying Figure 4, the products of combustion travel through the draft passage while when closed, they travel through the serpentine frontal portion 23 of my surrounding Water,

space I2.

Spaced from the interior wall I9 and con# nected thereto by the horizontal .transverse plate 2| is an intermediate wall 22, which it will bei'V noted does not extend to the height of. the wall I9, This wall also communicates with'the portions II and of the air space.

The anterior wall 23, also constitutes one of thel vfour sidesy of' my surrounding hot'air space i I2,^the sheets It and 24 forming one side of this' I Wall'extending vertically to a height in excess of that of the walls I9 and 22.'-

The panels 25 and26 of which' the wall 22 is formed, are'united at the apex thereof by theV panel ,21,'while the Apanel 26 is united at the base thereof to the sheet 24 by means of the' portion 28and by reference to the accompanying Figure 1 it will 'be seen that the foregoing walls are .Supported by means of the pedestals 29.

Extending across the adjacent hot' air chamber and communicating at each end with the Vpo'rtionsr I I and 20 of my surrounding hot air space, is the transverse inverted U-shaped hot air passage which I have already' designated G, theY same having sheet metal walls whichV comprise the vertical legs 30' and 3|"and the horizontal communicating passage 32 so that the passage may be described as perimetrically [closed yet open sided since it communicates with thel surrounding air space I2.' The passage Gis'spaced from the three hollow walls- I have referred to,-

thereby providing what I describe as a serpentine lire path F which actually4 is W'shaped`as may clearly be seen.

by the panels 32.'f

It will be understood of course, that the prod,

ucts of combustion emerge from my firebox in It will be understood of course,rthat.theends of the fire'path'F are closedV the direction of the arrow in the accompanying Figure 1 and by reference to this gure and toy A the accompanying Figure 4, it will be seen thatI provide a bailie plate 33 at the apex of the ywall II extending up to the' crown plate 34, so that the products of combustion travel not only in the direction of the' arrow to be seen in the accom.

panying Figure 1 but are also guided inthe direction of the arrow to be seen in the accompanying Figure 4.

Above the serpentine fire path'referred to, is

my ldraft passage H, the far end of which spanned by the baffle plate 34 and vwhen neces-f sary by the damper 35 and from the foregoing it will be seen that I have provided a pair] of staggered baffle plates, by means of which the products of combustion in emerging from my rebox are compelledV to distribute themselves all over the under surface of the crown sheet immediately above the draft passage and thereby assist in heating thesuperimposed hot air compartment presently to be yreferred to. My damper 35 is actuated by the push-pull rod 36,' which is connected tothe link 31 (Figure 4), the rod 36 terminating in a convenient knobV 38 projectnre path but also enter the draft passage before being backed-up by the closed damper and baille 34".

As the hot gases of combustion reach a height in the leg 39 of my re path, corresponding ap,- proximately to the position of the arrow 40 in the accompanying Figure 1, they are turned back into" the horizontal as illustrated in the accom- Ypanying Figure 5 by the arrow 4I and into my horizontally reverse angulated fire passage K also clearly illustrated in the accompanying FigureV 5. This passageY is positioned within what I Vhave termed my superimposed air heating compartment 42 and surrounds a vertical open-ended hot air* duct 43, which as Vclearly illustrated in the accompanying yFigure '1, is in communication with my `hot airy space YI2 land of course, the

several hollow wallsin 'theadjacent' hot air' chamber E. y l.

The fire passage K is supported' above ,the crown sheet by suitable supports 'such as 44and it willl be seen that I provide a suitable'cleanout passage 45 terminating uponthe'side 8 of my furnace in the clean-out gate 46.

The horizontal fire passage is enclosed' at the' top by a rectangular Vhumidifying pan 4-'I as most clearly illustrated in the accompanying'Figure 1, which surrounds the hot air vduct 43, this humidi- 'fying pan being provided with a plurality 'of' upstanding angle brackets 48 over which the usual absorbent' cloth may be hung and'into'which water is drawn from the pan' by capillary attrac` tion.

I do not* of Course Claim" amvy'novelty 'forthe use of absorbent cloth or the meansfor hanging the same in my humidifying pan nor do I claim'v any novelty for the float-valve assembly 49,'by'" means of which. 'water is maintained' inV my humidifying pan at a constant level from the conduit '59. I do claim'as novel, however, the "f construction and location of my humidifying pan and 'the remaining structure" which I have described as being positioned withn'the vsu'perin'fi`V posed hot air compartment 42.'

Finally with reference to the hot vair embodil ment of my furnace, it will be understood that' heated air rises 'through the enlarged aperture 5I vvwhile a plurality of cold'air conduits 52 are positioned at any convenient point near the b'as of my furnace. It is perhaps also unnecessary to point out that the course of hot gases through my fire Vpassage'K will be in the direction ofthe arrow 53 so that they emerge through the passage' 54 (Figures 1 and 5) into the usual "chimney.'"It

should also be noted of course, thatthese hot gases are also free to back-up into'the clean-'out passage '45, fromwhichheat'may also be'radiated*"l into the surrounding' hot air compartment By' reference to the accompanying Figures- -1 2 and. .Y 3, it will also be seen that I am able to clean out.v

the surfacesZ IV and 23 of myW-shapedfrefpath by virtue of the short passages 55, which"termi-v nate in the gates 5`and`6, while by'reference'" to the accompanying Figures" 1', 2 and Y4v it will'be seen that I am also ableto cleanbut the surface 56 of the draft passage H by virtue of the short' transverse passage 5l which terminates in the V clean-out gate4. v

" The'combination'hot 'Water' and lfi'ota'ir embo'd'i ment illustrated sectionally in the accompanying Figure 7, is essentially similar to the embodiment which I have already described and accordingly I consider it only necessary to described the same briefly and in respect of the additional structure by means of which it is enabled to heat a quantity of water.

It will be seen that the side 58 of my rebox and that portion of the crown sheet 34 which covers the same, is water jacketed by means of the right angled hollow wall 59 consisting of a vertical portion 60 and a horizontal portion 6I.

In this embodiment the intermediate hollow wall 62 is filled with water and terminates at the corners where the back and front walls of the rebox join the wall 63 to allow for the surrounding hot air space I2.

The hollow walls 59 and 62 are connected by means of any desired number of horizontal water tubes B4 as clearly illustrated in the accompanying Figure '7, and also by the right angled water tubes 65 which it will be seen extend vertically down the leg 66 of my iire path and communicate with the wall 62 via a horizontally extending water jacketed foot 66.

Hot water rises through the conduits 61 which communicate with the horizontal portion of my wall 59 while cold water returns through the conduit 68 to enter the posterior vertical section 69 of my wall 59.

Since many modications can be made in the invention herein described and since the accompanying drawings have been prepared only to illustrate the relative arrangement and interaction of parts and not with regard to accuracy of dimensions for manufacturing purposes which in view of this disclosure I consider to entail merely mechanical skill coupled with the skill of the draftsman, and since many apparently widely different embodiments of this invention may be made within the scope of the accompanying claims without departing from the spirit and scope of the same it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.

What I claim as my invention is:

1. Improvements in furnaces comprising in combination, a rebox, a jacket surrounding said rebox, a fire-path at one side of said fire-box of serpentine vertical cross-sectional configuration and a transverse perimetrically enclosed passage of U-shaped cross-section in the plane of, and at one side of said rebox communicating at the sides thereof with air jacket, said passage bounding at least a portion of said nre-path.

2. Improvements in furnaces comprising in combination, a reboX, a jacket surrounding said rebox, a fire path at one side of said rebox of W-shaped Vertical cross-section and a transverse perimetrically enclosed hot air passage of U- shaped vertical cross-section extending between said jacket, the walls of said passage constituting one of the boundaries of said W-shaped fire path.

3. The furnace as defined in claim 1 which includes a horizontal draft passage above said W- shaped re path and staggered baille plates at the ends of said draft passage.

4. Improvements in furnaces comprising in combination a fire-box, a jacket surrounding said fire-box, a fire path at one side of said re box of W-shaped vertical cross-section, a transverse baille of inverted U-shaped vertical cross-section extending between said jacket a draft passage above the horizontal portion of said baffle constituting the lower wall of said passage, said bale constituting one of the boundaries of said W-shaped fire path.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2439972 *Oct 19, 1944Apr 20, 1948Gamblin Fay BHot-air heater with selective indirect draft
US2514011 *Sep 4, 1948Jul 4, 1950Harvey Whipple IncCombined combustion chamber and heat exchanger
US4180052 *Oct 19, 1978Dec 25, 1979Henderson Delbert HFurnace fireplace apparatus having separate combustion and heating air systems and settling chambers for particulate matter
US4275705 *Jan 28, 1980Jun 30, 1981Canadian Gas Research InstituteTwo-stage heat exchanger
US4409955 *Jun 4, 1981Oct 18, 1983Christian J VernonSolid fuel warm air furnace
U.S. Classification126/108, 126/101
International ClassificationF24H6/00
Cooperative ClassificationF24H2230/00, F24H6/00
European ClassificationF24H6/00