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Патент USA US3099266

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July 30, 1963
H. D. DU FAULT
3,099,257
STEEL SPACE HEATER CONSTRUCTION
Filed July 15, 1960
5 Sheets-Sheet 1
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July 30, 1963
H. D. Du FAULT
3,099,257
sTEEL SPACE HEATER CONSTRUCTION
Filed July 15, 1960
5 Sheets-Sheet 2
INVEN TOR. I I
Home/“Ü £70750#
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July 30, 1963
H. D. DU FAULT
3,099,257
sTEEL SPACE HEATER CONSTRUCTION
Filed July 15. 1960
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United States Patent O ice
3 ,099,251
Patented July 30, 1963
2
1
the bottom plate 44 and back plate 46 adjacent the op
posite ends thereof. An intermediate vertical divider
plate 52 is welded to the back plate 46 and a tie plate 54
3,699,257
STEEL SPACE HEATER CONSTRUCTIÜN
Horner D. Du Fault, Easthampton, Mass., assigner to
Heatlbatll Manufacturing Company, Inc., indian
Orchard, Mass., a corporation of Massachusetts
Filed July 15, 1960, Ser. No. 43,212
2 Claims. (Cl. 126-90)
extends between and is welded to inturned flanges of the
side plate 50 and divider plate 52. The divider plate 52
separates the frame member into a heater area which
receives the firebox 12 and burner 36 and a controls area
in which a control unit is mounted, as will later appear.
lChannel members S6 run parallel to and adjacent the
front and rear edges of the bottom plate 44. A pair of
legs 58 underlie the channels 56 and are secured thereto
to support the frame 14 is well as the firebox 12 and
The present invention relates to improvements in space
heaters of the type which are installed in a semi
permanent fashion to heat a single room or a relatively
localized area.
The object of the invention is to reduce the cost and
simplify the maintenance of such space heaters and at
the same time increase the efficiency with which the fuel
is used in heating the area in which the space heater is
installed.
The above and other related objects, as well as the
constructional features of the invention, will be apparent
from a reading of the following description of the dis 20
closure found in the accompanying drawings and the
novelty thereof pointed out in the appended claims.
ln the drawings:
FIG. 1 is a front elevation, with portions broken away
and in section, of a space heater embodying the present 25
cabinet 16 when the latter two units are mounted in
place. An angle member 60 is secured to the front face of
the front channel 56. The angle 60 is spaced above the
base plate 44 a distance somewhat greater than the thick
ness of an inturned lip 62 (FIG. 3) running along the bot
tom edge of the cabinet 10 for purposes which later ap
pear. An opening 64 is formed in the back plate 46 to
more or less snugly receive the outlet pipe 42 on the
firebox 12. On the rear of the back plate 46 is secured a
ñue box 66 into which the hole 64 opens. The flue box
66 is open at its lower end and is provided with a circular
rim 63 defining an opening in its upper wall for attach
ment to a flue pipe (not shown).
ln assembling the above-described units, the firebox
invention;
FIG. 2 is an end elevation of the space heater;
FIG. 3 is an exploded end elevation with portions cut
away and in section; and
FIG. 4 is a plan view of the space heater with its 30
cabinet removed and portions thereof broken away and
in section.
With reference to the drawings, and particularly FIG.
3 thereof, the present space heater comprises three basic
12 is mounted on a pair of posts 70 which project up
wardly from and are secured to the front channel 56 (see
also FIG. 2). The front wall of the firebox 12 is out
wardly iianged and apertured to receive the reduced upper
ends of the post 70. Nuts 72 rigidly secure the front
portion of the firebox 12 relative to the frame 14. The
outlet pipe 42 of the firebox is projected through the hole
64 and rests on the lower edge thereof. It will be seen
sheet metal members which are pre-assembled as units 35 that the firebox is supported in part by the base plate 44
capable of easy assembly and disassembly.
The three
and in part by the back plate 46. An angle strap 74 is
sheet metal units comprise a cabinet 16, a firebox 12
welded to the back panel 46 above the hole 64 and aper
and a frame 14.
tured to receive a sheet metal screw 75 which will pass
therethrough and thread into the outlet pipe 42 thereby
metal frame having inturned fianges 16 (FIGS. 1 and 3) 40 positively locating the firebox 12 in a fore and aft sense
relative to the frame 14.
defining an opening in the front panel thereof. Sides 1S
The cabinet 19 comprises a rectangular welded sheet
of the cabinet are illustrated as solid sheet metal walls or
panels, while an opening 2t) in the top panel of the cab
inet is closed off by a sheet 22 (FIG. 4) of perforated
metal. lnturned flanges 24 define the rear edges of the
side panels 1S, while inturned flanges 26 define the lower
edges of the said side panels 18. A U-shaped sheet metal
channel 23 (FIG. l) extends between the upper and
lower flanges 16. A cross channel member 3i) extends
between the left hand flange 16 and the vertical channel
28. A sheet of perforated metal 32 fills the opening be
tween left hand flange 16 and the channel 2S. The
sheet metal 32 is secured to the front portion of the top
fiange 16, trained behind the channel 3@ and then secured
to the front portion of the lower flange 16 for decorative
purposes. It will also be noted that a louvered door 34
fills the opening between the channel 28 and the right
hand flange 16 being pivoted at 35 relative to the upper
and lower flanges 16.
The firebox 12 (FIG. 3) is a welded sheet metal as
sembly open at its lower front end to receive the com
bustion products of an open flame burner 36. lInternal
baffles 38 and 40 create a reverse path of ñow of the
There are few repairs which will require removal of
the fire-box 12 from the lframe 14. However, if the need
should ever occur, it is a simple and easy matter. Of
45 greater importance is the ease of mounting the ñrebox in its
original assembly. This >facility a-dds to the savings that
are possible in the cost of manufacturing the present space
heater.
The burner 36 is preferably, but not necessarily, of the
50 open flame type being `disposed in the bottom opening
(seen in FIG. 3) running along the lower front portion of
the ñrebox 12. The burner 36 is held in place by brackets
79 secured to the end walls of the lirebox 12. Secured
to the ldivider plate 52 is a sheet metal bracket 86 (FIG.
55 4) on which is mounted «a thermostatic control unit 82.
A pipe S4 (FIG. 2) connects the control unit «82 with
a supply line lfor natural or artificial gas. A tube 86 leads
from the -control unit S2 to the burner 36 and a tube 88
also leads therefrom to a pilot light in the lburner 36. It
60 will be noted that the control knobs for the control unit 82
lie behind the `door 34 and are readily accessible for ad
justment simply by opening the door 34.
heated gases and a maximum transfer of heat to the outer
The cabinet 1t) is readily mounted on the frame 14 by
sliding the flan-ges '26 (see FIG. 4) thereof over and along
walls of the firebox.
a flanged discharge opening in the form of an outlet
pipe 42 to a flue box, later described.
The frame 14 comprises a base plate 44 which is folded
upwardly at its rear edge to form a back plate 46. An
this is done, just slightly «before the flanges 24 engage the
back plate 46, the lip 62 (at the lower front edge of the
cabinet) will be caught beneath the angle member 60
thereby anchoring the front portion of the cabinet rela
The heated gases will pass through 65 the marginal side edge portions of the base plate 44. As
angle plate or gusset 48 (see also FIG. 4) is welded along 70 tive to the frame. Four sheet rnetal screws 76 pass
through openings provided in the back plate 46 and are
the right hand marginal edge portions of the base plate
threaded into the flanges 24 thereby effectively anchoring
44 and back plate 46. A side plate Sil is also welded to
3,099,257
4
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the fact that the cabinet can be mounted or disassembled
plate communicating with said opening, a sheet metal
vertical «divider plate portion secured to said back ulate
and extending forwardly therefrom to separate the frame
simply by inserting _or removing the four screws '76. This,
member into a heater area and a controls area, the latter
of course, reduces the costs of original manufacture and
can lbe readily made by opening the door 34 to gain access
being of lesser Widthwise extent, an internally bañied
sheet metal lire box `disposed in said heater area and
having a front Wall deñning in part a bottom opening
to the controls area of the space heater.
therefor and an outlet pipe at the upper rear portion there
the rear portion of the cabinet 10 relative to the frame 14.
The simplicity and ease of `assembly is apparent from
simplifies later repairs. Minor repairs and adjustments
of, said base plate having a reinforcing channel member
It will, of course, be appreciated that the thickness of the
various sheet metal parts has been exaggerated to some ex
10
tent in the drawings for the sake of clarity. it has been
found «that Ifor most items a >relatively light gauge metal can
be used so that the overall cost of the present space heater
rwith opstanding legs fastened thereto adjacent the front
thereof in said heater area, the said outlet pipe of the tire
box extending into said back plate opening and detachably
secured therein for supporting the rear of the ñre box, and
the said legs of the base detachably secured to the said
ers of conventional construction. In this regard particular 15 front Wall of the iire box for supporting the box at the
front thereof in an elevated position above the base, said
note is taken of the yiirebox 12. and the manner in which it
fire box having mounted therein a fuel burner unit in said
is mounted.
bottom opening, a controls unit mounted on sai-d divider
Having thus described the invention, what is claimed as
plate and ‘connected with and controlling ñow of fuel to
novel and desired to be secu-red by Letters Patent of the
United States is:
20 said burner unit, -means bracing said base, back and divider
plate portions including an end wall deñning with said
1. A space heater comprising a unitary frame member
divider plate the said heater area> of the frame, a cabinet
having rectangular :base and back plates, the back plate
having top, front and side panels with the side panels
having an opening adjacent the upper end thereof and
is considerably reduced when compared with space heat
a iiue box supported on the rear face of the back plate
thereof being slidalbly supported on said base plate,
communicating With said opening, an internally baffled 25 fastening means detachably securing the cabinet side pan
els to the said back plate, the front and top cabinet panel
sheet metal iire box having a front wall defining in part
portions ‘coextensive with said heater area of the lframe be
a bottom opening therefor and an outlet pipe at the upper
ing of open Work construction and said front panel having
rear portion thereof, said ybase plate having upstanding
access door mounted in front of said controls area.
legs adjacent the `front thereof, the said outlet pipe of the
fire box extending into said back plate opening and de 30
References Cited in the file of this patent
tachably secured therein for supporting the rear of the lire
lbox, and the said legs of the base detachably secured to
the said front wall of the lire box for supporting the box
at the front »thereof in an elevatedl position above the base,
and a cabinet having top, front, and side panels with the 35
side panels thereof being slidably supported on said base
plate, and fastening means detachably securing the cabinet
side panels to the said back plate.
2. A space heater comprising a unitary 1frame member
having sheet metal rectangular base and back plate por 40
tions bent at right angles to each other, the `back plate
portion having an opening adjacent the upper end thereof
and a iluebox' supported on the rear face of the back
UNITED STATES PATENTS
1,807,014
2,241,025
2,262,158
2,279,975
2,302,235
2,386,160
2,396,939
2,620,940
2,632,4352,716,405
2,960,085
Sanford _____________ __ May 26, 1931
Wedderspoon _________ __ May 6, 1941
Beam ________________ __ Nov. 11, y1941
Evans _______________ __ Apr. 14, 1942
Martin ______________ __ Nov. 17, 1942
Georg ______________ __ Oct. 2, 1945
Brown ______________ __ Mar. 19, 1946
Ginter ______________ __ Dec. 9, 1952
Lundstrum ___________ __ May 24, 1953
Nelson ______________ __ Aug. 30, 1955
Du Fault ____________ __ Nov. 15, 1960
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