Improvements relating to Stoves and Cooking Ranges.
Year: 1889

page_text: Date of Application, 20th Feb., 1889
Complete Specification Left, 20th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements relating to Stoves and Cooking Ranges.
We JOHN MATHIESON, WILLIAM MATHIESON, ROBERT MATHIESON, and ANDREW
TURNBULL, trading under the style of firm of Turnbull, Mathieson and Co., at the.
Colonial Iron Works, Larbert, County of Stirling, North Britain Ironfounders do
hereby declare the nature of this invention to be as follows:-
This invention relates to stoves and Cooking Ranges and has for its objects 1st to
enable such apparatuses to be used alternately with a closed top to the fire or an open
one as required, 2nd to. effect such transitions without lifting away the heavy metal
cover which closes over the top of the fire and 3rd to effect each of such transitions
with one simple movement.
In carrying out our invention we construct a metal hood or porch upon the Hob
or Hot plate of the Range behind the fire space the front opening of which porch is
opened or closed according as the metal fire cover is pushed. backward from off the
fire or pulled forward over it.
In order to effect these two movements simultaneously we hinge together the
moveable plate which covers over the top of the fire and that one which closes the
front opening of the porch. As a result of thus hinging the two said plates together
when the fire cover is pushed backward the flue plate recedes with it and as it recedes
it also descends until it lies flat upon the face of the fire cover leaving the entrance
to the porch open through which space the smoke obtains direct access from the open
top of the fire into the chimney which is immediately behind the metal porch.
When the fire cover is drawn forward the flue plate commences to rise gradually
into an erect position within the porch by means of one or more pins which project
suitably from the inside walls of the porch for causing the said elevation.
The flue plate is larger than the front opening of the porch which is furnished with
suitable flanges, pins or ledgers for retaining the said flue plates in an erect position.
The fire cover & its associate hinged flue plate can be removed from the stove or range
& re-placed at will.
"
From the foregoing description it will be understood that by simply pushing back
the plate which covers over the fire the stove or cooking range becomes an open
fire one without any further operation whatever and that when the said fire cover is
drawn back again the apparatus is a "close fire" one.
.
Suitable means are afforded for damping the various flues and for affording quick
vent for the smoke into the chimney whenever the fire is kindled.
Dated this 15th day of February 1889
JOSEPH
LOCKWOOD,
Argyle Street, Glasgow, Agent for the Inventors.
COMPLETE SPECIFICATION.
Improvements relating to Stoves and Cooking Ranges.
We JOHN MATHIESON, WILLIAM MATHIESON, ROBERT MATHIESON and ANDREW
TURNBULL, trading under the style or firm of Turnbull, Mathieson & Co. at the
Colonial Iron Works, Larbert, County of Stirling, North Britain Ironfounders, 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 and has for its objects 1st to
enable such apparatuses to be used alternately with a closed top to the fire or an open
one as required, 2nd to effect such transitions without lifting away the heavy metal-

page_text: cover which closes over the top of the hire and ord to erect each of such transitions
with one simple movement.
In carrying out our invention we construct a metal hood or porch upon the Hob or
Hot plate of the range behind the fire space the front opening of which porch is
opened or closed according as the metal fire cover is pushed backward from off the
fire or pulled forward over it.
In order to effect these two movements simultaneously we hinge together the
moveable plate which covers over the top of the fire and that one which closes the
front opening of the porch. As a result of thus hinging the two said plates together
when the fire cover is pushed backward the flue plate recedes with it and as it recedes
it also descends until it lies flat upon the face of the fire cover leaving the entrance
to the porch open through which space the smoke obtains direct access from the open
top of the fire into the chimney which is immediately behind the metal porch.
When the fire cover is drawn forward the flue plate commences to rise gradually
into an erect position within the porch by means of one or more pins which project
suitably from the inside of the porch for causing the said elevation.
The flue plate is larger than the front opening of the porch which is furnished
with. suitable flanges, pins or ledgers for retaining the said flue plate in an erect
position.
The fire cover and its associate binged flue plate can be removed from the stove or
range and replaced at will.
From the foregoing description it will be understood that by simply pushing back
the plate which covers over the fire the stove or cooking range becomes an open fire
one without any further operation whatever and that when the said fire cover is
drawn back again the apparatus is a "close fire" one.
Suitable means are afforded for damping the various flues and for affording quick
vent for the smoke into the chimney whenever the fire is kindled.
Our invention will be better understood by a reference to the accompanying
illustrations in which-
Figs. 1 and 2 are views in perspective of those parts of a stove which contain our
improvements.
Fig. 3. is a perspective view of a loose metal hood or porch for use in combination
with an open and close fire arrangement;
Fig. 4. is a view in perspective of a fire cover and upright flue plate hinged thereto
for the purposes of our invention ;
Fig. 5. is a perspective view of a fire space and adjacent hobs for use in connection
with our invention;
Figs. 6 and 7. are perspective views shewing the metal hood or porch in its relative
position to the fire space and other parts of the
range;
Fig. 8 is an elevation and section of the flue plate and fire cover hinged together
(see fig. 4) and resting upon the hobs―.
Figs. 9. 10. 11. 12. 13 and 14 are sectional views illustrative of our invention:
In carrying out our invention we hinge together by any simple and convenient
means the horizontal plate A fig. 1. which covers over the fire and the upright flue
plate B which closes the front entrance of the metal hood or porch C. This metal
hood or porch (C) is sometimes made in the fast but protruding form shewn in fig. 1 ;
sometimes as an entrance to the lower part of the chimney D as shewn at B³ fig. 2
and at other times as a loose and removeable hood as shewn in fig. 3 (C²).
Upon or within the inside of the said metal hood or porch we provide projections E
and E2 figs. 3 to 14 for guiding the plate B figs. 1 to 14 in its motions and retaining
it in its upright position. The pins or projections E are for the purpose of raising
up the said hinged flue plate B when the fire cover A is drawn forward over the fire
as shewn in figures 7 and 10 these parts E bear against the sides of the plate B until
the said plate is raised to a suitable angle (refer to 3 fig. 7) for being further guided
into its vertical position by means of the metal hood C, which, as before stated, is
suitably formed with a front opening smaller than its interior (or hinder part). The
portions marked E2 prevent the fluo plate B from falling backwards after reaching

page_text: its vertical position also as shewn in figs. 3 and 6 where the part E is shewn as a
flange or tongue depending from the underside of the roof plate of hood (it is
designed to close any such opening or gap in the flue plate B as that behind the
staple F fig. 4.
When we construct the smoke porch of our range as shewn in figs. 1 and 2. we
find it best to place the pin E in or about the position shewn in figs. 9 & 10 and cut
away a small check e² from each side of the plate B (as shewn in fig. 8) to enable tho
said plate to pass over the stud or pin E whenever the plate reaches the angled
position shewn at fig. 7; but when we furnish our range with a loose metal hood
or porch as it is a common practice amongst range makers to do we place the pin
(or pins) E upon the hob plate of the range as shewn in figs. 5 to 14.
In operating our improved open and close fire devices as above described & as
shewn in figs. 1 & 2 the fire cover A requires to be pushed backward (by any suitable
tool or instrument) into the position shewn in figure 10 when the open front of the
porch Caffords an escapement for the smoke and flame to enter the chimney G as
shewn by the arrows: the flap, door or plato B having by means of its being hinged
to the fire cover A descended into the recumbent position shewn in this figure (10).
This movement, effects and developes the open fire arrangement. To restore the
parts to the close fire arrangement shewn in figs. 1 & 2 the fire cover A needs only
to be drawn forward from its retired position within the back flue and as it is drawn
forward the parts E cause the plato B to rise into its erect position again as a door
covering and closing the entrance to the hood C.
When we furnish our range with a loose metal hood or porch in lieu of the fast
one above described we find it advantageous to construct the door or plate B with a
staple F fig. 4 (or its equivalent) and operate the open & close fire mechanism with a
rod, poker or other suitable tool as shewn in figs. 13 and 14; the process being as
follows, assuming that the arrangement is closed.
Wo insert the aforesaid rod (or tool) within the staplo F as shown in fig. 13 and
draw forward the plate B until it lies down upon the fire cover A as it is drawn
forward it forces out the loose metal hood C as far as required when, without
removing the tool from the said staple the fire cover & plate B are pushed into the
back flue as shewn in fig. 14-owing to the plate B bearing against the pins in this
process the forward movement of the hood C and plate B and the backward sliding
of the plate A are all effected simultaneously with one movement and without
removing the aforesaid tool: sce fig. 14. To restore the devices shewn in fig. 14 to
their former positions as shewn in fig. 13 the tool before named requires inserting in
a holo or cavity H formed within the fire cover A see figs. 1 to 7, and using it as a
fulcrum, press back the loose metal hood (into the chimney) and pull forward the
fire cover A the pins E and projections E coming into operation upon the plate B
as before described-We find it advantageous sometimes to make a sloped or curved
path on the sides of the plate B as shewn at J figs. 4 & 7. The projecting parts K of
the hood figs. 1 to 12 are merely covers or shields for the pins E (or their
equivalents) certain parts which are well known, to stove and range makers and
shewn herein are not particularised by reference letters or unnecessary description.
Similar letters of reference are employed throughout these illustrations to indicate
corresponding parts.
We are aware that numerous devices exist in open & close fire arrangements
connected with stoves and ranges whereby cover plates are hinged together and loose
or fast metal hoods and porches are automatically propelled forward and backward also
opened & closed. We do not therefore claim such devices broadly as our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,
First. In a stove or cooking range the combination therewith of mechanism for
open & close fire purpose all substantially as herein described and shown.

page_text: Second. In a stove or cooking range open & close fire mechanism the combination
therewith of pins E or their equivalents all substantially as herein described and
shewn & for the purposes specified.
Third. In a stove or cooking range open & close fire mechanism the hinging
together of the plates A and B all substantially as herein described and shewn & for
the purposes specified.
Dated this 19th day of November 1889
JOSEPH
LOCKWOOD,
Argyle Street, Glasgow, Agent for the Inventors.