Improved Devices for Stoves and Cooking Ranges.
Year: 1892

page_text: Date of Application, 12th Apr., 1892
Complete Specification Left, 12th Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improved Devices for Stoves and Cooking Ranges.
I, DERMONT CAMPBELL of Torwood Foundry, Larbert, County of Stirling,
North Britain, Ironfounder, do hereby declare the nature of this invention to be as
follows:-
This invention relates to stoves and cooking ranges, whichever term may
hereafter be applied to them in the following description, and has for its objects-
first, to furnish ranges with an improved flue device whereby the apparatus may be
used alternately with an open top to the fire or a closed one-second, to improve
and simplify the construction of various parts of such structures, namely the
ventilating, cleaning, draught excluding and other doors connected therewith;
third, to combine such doors with their outside bracket shelves, and fourth, to
increase the heating capabilities of stoves.
One purpose to be effected by the improved construction of the parts referred to
is that they may be fitted into their several places without the necessity for drilling
holes or employing screws, rivets or skilled labour for the work and may be easily
removed from their receptacles and bearings whenever it is necessary; also that
there may be fewer projecting hinges on the outer face of the apparatus.
In carrying out my invention, I construct an improved flue device in connection
with a stove or range for combined open and close fire purposes consisting of a roof
plate and two side plates-right and left-with a concave channel part attached to,
and slightly below, the hinder edge of the said roof plate. This flue piece is
inserted within a port hole contained in the back frame of the range adjacent to
the chimney and in line with the fire box. The said port hole is suitably shaped,
and furnished, right and left, with bearers for combination with the concave channel
part of the flue piece, so that the latter may repose thereon, and be partially
revolved after the manner of a hinge. By partially inverting the said flue piece
the channel part can be inserted within the port hole, which is widest at its upper
part, and then, being lowered upon the hob, it rests thereon and forms, with the
hob, an open ended rectangular flue leading from the fire box into the lower part
of the chimney, and in this form is adapted for being used with an open top to
the fire.
If pressure is applied to the said flue piece in the position above described it is
partially revolved and its side plates retire within the port hole, the roof plate
assumes a vertical position in front of and closing up the port hole and the device
is then adapted for "close fire" purposes.
The slow combustion or draught excluding door which is (frequently) fitted
beneath the fire bars and closes the front aperture of the ash pit space is formed
and fitted into its place similarly to the aforesaid flue device, so that it may serve
a three-fold purpose-first, for draught exclusion-second for air admission, and→
third, for a bracket shelf.
The ventilating door, flue cleaning (or "soot") doors and all other vertically
placed doors of my range (except that of the oven) are formed, fitted and operated
similarly to the one above described in connection with my improved open and
close fire flue device.
I also form and fit into its place the oven bracket shelf of my range similarly to
the doors above named except that it is not designed to be revolved in the same
manner as the said doors and remain stationary in more than one position, as I
combine with it the flue cleaning door for the aperture leading to the space beneath
the oven, so that when this combined bracket shelf and door is removed, access can
be obtained to the smoke flue underneath the oven.

page_text: called 66
"
Behind, and in conjunction with the canopy of a stove, whether the latter is
a register stove, parlour grate" or by any other synonymous title, I
combine a box receptacle and suspend it in the position usually occupied by the
canopy, the front part of the said box being perforated at the lower and upper
extremities for admission of air into and emission of warm air from within, the box.
The front cover of the box answers the ordinary purposes of the stove canopy.
This said box is constructed and inserted in the open space above the fire grate
similarly to the flue piece first described herein.
I also make this box canopy capable of adjustment at a higher or lower elevation
and, variously, in a forward or backward direction. When the said box is fitted in
the upper part of the stove and a fire is made in the grate beneath it the box
becomes heated, the air contained therein expands and finds exit therefrom, into
the apartment, through the uppermost perforations before named, a constant current
of air passing into and out of this air heating receptacle as long as the fire remains
in the grate. By lowering this box canopy or pushing it inwards its action upon
the lighted fire is that of a draught (or "draw") plate, quickening the process of
combustion.
Dated this Eleventh day of April 1892.
JOSEPH
LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Inventor.
COMPLETE SPECIFICATION.
Improved Devices for Stoves and Cooking Ranges.
I, DERMONT CAMPBELL of Torwood Foundry, Larbert, County of Stirling,
North Britain, Ironfounder do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
This invention relates to stoves and cooking ranges, whichever term may here-
after be applied to them in the following description, and has for its objects; first,
to furnish ranges with an improved flue device whereby the apparatus may be used
alternately with an open top to the fire or a closed one: second, to improve and
simplify the construction of various parts of such structures, namely the ventilating,
cleaning, draught excluding and other doors connected therewith; third, to
combine such doors with their outside bracket shelves; and, fourth, to increase
the heating capabilities of stoves.
One purpose to be affected by the improved construction of the parts referred to
herein is that they may be fitted into their several places without the necessity for
drilling holes or employing screws, rivets or skilled labour for the work and may be
easily removed from their receptacles and bearings whenever it is necessary: also
that there may be fewer projecting hinges on the outer face of the apparatus.
In carrying out my invention I construct an improved flue device in connection
with a stove or range for combined open and close fire purposes consisting of a roof
plate and two side plates-right and left-with a concave channel part attached to,
and slightly below, the hinder edge of the said roof plate. This flue piece is
inserted within a port hole contained in the back frame of the range adjacent to the
chimney and in line with the fire box. The said port hole is suitably shaped,. and
'furnished, right and left, with bearers for combination with the concave channel
part of the flue piece, so that the latter may repose thereon, and be partially
revolved after the manner of a hinge. By partially inverting the said flue piece
the channel part can be inserted within the port hole, which is widest at its upper
part, and then, being lowered upon the hob, it rests thereon and forms, with the
hob, an open ended rectangular flue leading from the fire box into the lower part
of the chimney, and in this form is adapted for being used with: an open top to
the fire.
i

page_text: If pressure is applied to the said flue piece in the position above described it is
partially revolved and its side plates retire within the port hole, the roof plate
assumes a vertical position in front of, and closing up the port hole and the device
is then adapted for "close fire purposes.
"
The slow combustion or draught excluding door which is (frequently fitted
beneath the fire bars and closes the front aperture of the ash pit space is formed
and fitted into its place similarly to the aforesaid flue device so that it may serve a
threefold purpose-first, for draught exclusion, second, for air admission, and, third,
for a bracket shelf.
The ventilating door, flue cleaning (or "soot") doors, and all other vertically
placed doors of my range (except that of the oven) are formed, fitted and
operated similarly to the one above described in connection with my improved open
and close fire flue device.
I also form and fit into its place the oven bracket shelf of my range similarly to
the doors above named except that it is not designed to be revolved in the same
manner as the said doors and remain stationary in more than one position as I
combine with it the flue cleaning door for the aperture leading to the space beneath
the oven, so that when this combined bracket shelf and door is removed, access
can be obtained to the smoke flue underneath the oven.
Behind, and in conjunction with the canopy of a stove, whether the latter is
called a 66
register" stove, "parlour grate" or by any other synonymous title, 1
combine a box receptacle and suspend it in the position usually occupied by the
canopy, the front part of the said box being perforated at the lower and upper
extremities for admission of air into and emission of warm air from within, the box.
The front cover of the box answers the ordinary purposes of the stove canopy.
This said box is constructed and inserted in the open space above the fire grate
similarly to the flue piece first described herein.
I also make this box canopy capable of adjustment at a higher or lower elevation
and, variously, in a forward or backward direction. When the said box is fitted in
the upper part of the stove and a fire is made in the grate beneath it the box
becomes heated, the air contained therein expands and finds exit therefrom into the
apartment, through the uppermost perforations before named, a constant current of
air passing into and out of this air heating receptacle as long as the fire remains in
the grate. By lowering this box canopy or pushing it inwards its action upon the
lighted fire is that of a draught (or "draw") plate, quickening the process of
combustion.
In order that my invention may be fully understood and easily carried into effect
I have prepared the accompanying drawings in which ;
Fig. 1, is a view in perspective shewing the lower part of a metal chimney
containing a port hole formed in accordance with my invention;
Fig. 2, is a view in perspective shewing my improved flue piece for combination
with the special shaped port hole shewn in Fig. 1;
"
Fig. 3, is a view in perspective shewing the combination of the flue piece
and chimney port hole delineated in Figs. 1 and 2 suitably for " open-fire
purposes;
Fig. 4, is a side view in elevation and section of the parts as shewn in Fig. 3;
Fig. 5, is a side view in elevation and section shewing the relative positions
occupied by the improved flue devices illustrated in Figs. 1, 2 and 3, in their
"close-fire" combination;
Fig. 6, is a back view in perspective of my improved combined bracket shelf
and slow combustion damper, detached from the range;
Fig. 7 is a side view in elevation and section of the last named device shewn in
its position relative to the range;
Fig. 8, is a fragmentary view of bearers for Figs. 6 and 7 ;
Fig. 9 is a back view in perspective shewing my improved devices combined
with the oven bracket shelf of a range;

page_text: Fig. 1 is a side view in elevation and section shewing my improved oven bracket
shelf in its position relatively to the oven;
Fig. 11, is a view in perspective shewing my improved box receptacle for heating
purposes combined with parts of a cooking range;
Fig. 12, is a view in perspective shewing my improved box receptacle for heating
purposes, detached from a stove or range;
Fig. 13, is a side view in elevation and section shewing my box receptacle for
heating purposes in its position relatively to a parlour, or register stove;
Similar letters of reference and numerals are employed throughout the said
drawings to indicate corresponding parts.
The concave channel part A, united to the flue piece B, 61, 6¹ as shewn in Fig. 2
and the bearers C, C, formed upon the right and left sides of the port hole shewn
in the chimney plate D, Fig. 1, when in combination with a stove or range, con-
stitute my improved flue devices for conjunction with an open or closed top to the
adjacent fire box.
When the flue piece B is suitably inverted the channel part A can be inserted
within the clefts c', c', Fig. 1, as previously described and the flue piece is allowed
to rest upon the hob e as shewn in Fig. 4 the said channel part A engages with the
lower edge of the plate D which serves the purpose of a stop to prevent the with-
drawal of the flue piece, as shewn in the said Fig. 4, which represents, together
with Fig. 3 the combined open and "close-fire" flue devices made according to my
invention in their relative positions as adapted for "open-fire" purposes; the fire
cover F, Fig. 5, being removed from over the fire box.
The part marked E in Fig. 3 represents the uncovered fire box with a sloping
back as indicated also in Figs. 4 and 5.
In order to shut these flue devices a downward pressure must be applied to the
flue piece B at the cavity 62 when the curved edges of the parts 61 and the engage-
ment of the parts A, C and D enable the top plate B of the flue piece to be turned
into the vertical position shewn in Fig. 5 when it serves to close the port hole in
plate D.
Figs. 6, 7 and 8 represent the combined slow-combustion door and bracket shelf
devices made and fitted upon a stove according to my invention. As represented
in Figs. 6 and 7 this combined bracket shelf and door is constructed with a top
plate and quadrant shaped sides, with stops and the channel part A. The
plate is made to cover the port hole of the ash pit G, Fig. 7, beneath the fire
box g¹of a stove or range, which port hole is formed with bearers or bracket
pieces C, Fig. 1, forming the clefts c on the right and left sides for supporting the
channel part A, and with shoulder parts Fig. 8 for engaging with the sides b
and stops b. When this combined bracket shelf and door is fitted into its place
as shewn in Fig. 7 the stops & engage with the shoulder pieces and the channel
part A with the plate d¹ euables the door to be fixed in the horizontal bracket
shelf position as shewn. The depth of the channel A enables the plate to be
slightly raised so as to disengage the parts and when the plate ³ can be
turned down into a vertical position against the front of the ash pan H, in which
position it cuts off the air supply from the underside of the fire: thereafter, by
slighly drawing forward the lower, disengaged edge of the plate 63 the quadrant
shaped sides 6, resting upon the bearers c, enable the said plate to be fixed in any
position required between the horizontal one shewn in Fig. 7 and an absolute
vertical one.
Figures 9 and 10 represent a combined oven bracket shelf and flue cleaning door
made in accordance with my invention. Upon the hinder part of an (outside) oven
bracket shelf & Figs. 9 and 10, I construct a pendant door plate to cover the
aperture Fig. 10, which is usually provided beneath the oven door for affording
access to clean the flue there and furnish it with two or more channel parts A, A;
the said aperture itself is formed with clefts c', c' and bracket bearers C as shewn
in Fig. 1 for the purpose of enabling the parts A, A, of a bracket shelf con-

page_text: structed as shewn in Fig. 9 to be hooked into the said clefts and supported in a
horizontal position as shewn in Fig. 10 where the plate, resting upon the base J,
and the parts A, hooked into the beforenamed clefts retain the bracket shelf in its
horizontal position, as long as required and adapt it for being easily removed.
Figs. 11, 12 and 13 illustrate the box receptacle for heating purposes, made
according to my invention for application to a stove or cooking range; the box L,
being hooked into the cove plate e by means of a channel part A attached to its
upper part and inserted within the clefts e¹ and supported at the lower part by
means of the flue doors 1, ' which form, together with the under side of the
box L, a flue leading from the fire box E into the main flue behind the said box.
The construction of the said box L adapts it for deflecting heat from the lower
inclined front plate ; for assisting the upeast currents from the fire by means of
sloping base plate as shewn at Fig. 13; and for an oven or air henting receptacle
by means of its internal chamber, which is furnished with apertures for the
admission of air and its emission after becoming heated by contact with the hot
body of the box.
a
In Fig. 11, the upper front plate of the said box is shewn to be hinged, at 1
as a door; in Fig. 12 this front plate is not hinged or moveable, and in Fig. 13 it
is furnished with a lift off panel or lid . The pendant shutter Fig. 13, directs
the incoming air current, downwards against the plate : 18 is a perforated shelf
adapted for nursery, sick room and other requirements; the arrows shewn in
Figs. 11, 12 and 13 indicate the directions taken by the various currents as well as
the various apertures for admission and emission of air currents.
In Fig. 11 the box L is supported by means of the channel part A contained
within the cleft and by the doors. When this box is furnished with side
flanges working in clefts c it does not require any other bottom support and
these last named devices enable the box to be pushed back various distances into
the back flue for the purpose of quickening the draught into the chimney or
closing the aperture M, Fig. 13, leading from the fire box N into the chimney P.
The flange marked 10 Fig. 13, working upon a bearer or bracket such as Fig. 8,
are alternative devices for supporting this box L in various positions. The part
marked N represents the fire basket of a parlour or register stove. The duplicate
or multiple clefts c', c', c, c, for engagement with the devices A and 1, adapt the
box for being placed at different heights and for being removed altogether from
the stove or range.
When the said box is removed from the upper clefts and fitted within the
lower ones c,, a shutter is placed over the aperture which is then made above
the box; and, when it is required, this box is fixed in one position only upon the
stove or range by means of screws, hooks or other simple devices.
As a result of looping the channel part A through the clefts and thus enclosing
the edge of the plate D within the said channel, the said parts can be operated
after the manner of a hinge, without involving the necessity of attaching to the
apparatus any outside sockets, crooks, or other projecting parts for effecting this
hingeing operation, either by casting screwing or otherwise uniting them to it.
I am
aware that, previous to my invention, rectangular flue pieces, both
patented and otherwise, consisting chiefly of a top or front plate and two side
plates, combined with chimney port holes of various kinds, said flue pieces being
operated in various ways, some of them similarly to that herein described for open
and close fire flue purposes, have been made and used; also
That a combined bracket shelf and fire damper attached to the fire breast of
a stove or range; also a hook-on oven bracket shelf with one or more pendant
supports have been made and used in connection with stoves and ranges; it
will therefore be understood that I do not claim such devices broadly as my
invention.
I am also aware that mantel register stoves, gas and hot air stoves and cooking
ranges have been made prior to my invention with an oven, hot closet or hot

page_text: air chamber fixed thereto in various positions above the fire box; it will therefore
be understood that I do not claim such a combination broadly as iny invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what
claim is
First. In a stove or cooking range a moveable rectangular flue piece having a
channel part A, and combined with a port hole having bearers C and clefts c',
whereby the said flue piece, when fitted to the apparatus and operated as described
adapts the said stove or range for being used alternately with an open top to the
fire or a closed one substantially as herein described and drawn.
Second. In a stove or cooking range a moveable bracket shelf and damper b
having sides 64, 65, and channel part A, whereby it is adapted, when fitted to the
apparatus and operated as described, for serving the two-fold purpose of a bracket
shelf and damper, substantially as herein described and drawn.
Third. In a stove or cooking range a combined bracket shelf 6 and damper b
having channel parts A, adapted for being fitted to a port hole with right and left
bearers C and clefts c¹ as shewn in Figs. 1, 8 and 10 all substantially as berein
described and drawn.
Fourth. In a stove or cooking range a hook on combined bracket shelf, 6ª, and
damper plate, 67, cast in one piece, substantially as herein described and drawn.
Fifth. In a stove or cooking range the combination therewith of an adjustable
and removeable box receptacle L, and operating devices A, c', i 110 and c³ or
their equivalents all substantially as herein described and drawn for the purposes
specified.
Sixth. In a stove or cooking range the combination therewith of a box
receptacle L, screwed, hooked or otherwise removeably attached to the apparatus,
all substantially as herein described and drawn or any mere modification thereof,
for the purposes specified.
Seventh. In an open fire register stove the combination therewith of a removeable
air heating box receptacle L, substantially as herein described and drawn, for the
purposes specified.
Dated this Eleventh day of January 1893.
JOSEPH
LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Applicant.