IMPROVEMENTS IN COOKING RANGES
Year: 1887

page_text: Date of Application, 30th Nov., 1887
Complete Left, 19th Mar., 1888
Complete Accepted, 4th May, 1888
We, GEORGE KINNAIRD, of the Queen's Park Foundry Cavendish Street, Glasgow,
trading under the style of Kinnaird and Ferguson and ROBERT MCADAM of 159
Cathcart Road Govanhill, Glasgow, foreman do hereby declare the nature of our
invention for IMPROVEMENTS IN COOKING RANGES to be as follows:-
It relates to Cooking Ranges and has for its objects 1st. to adapt them for use with
a closed top to the fire or an open one alternately as required; 2nd. to render a part
of the convertible flue apparatus, by which such object is effected, available as a hob
for cooking purposes, 3rd. to make any necessary removal and replacement of
component parts of the said mechanism.easy, and 4th. so to combine the parts of the
convertible flue appliance that its various transitions may be easily effected with one
hand only, in contradistinction to those convertible flue appliances which require the
use of two hands for their manipulation.
We attain these objects by the mechanism which is illustrated in the following
diagrams, in which;
Fig. 1. is a perspective view of our convertible flue appliance open.
Fig. 2. is a perspective view of our convertible flue appliance closed.
Fig. 3. is a sectional view of our convertible flue appliance open.
Fig. 4. is a sectional view of our convertible flue appliance closed.
Fig. 5. is a perspective view of a fixed rectangular frame.
Fig. 6. is a perspective view of a loose rectangular frame.
Fig. 7. is a perspective view of a door or flap.
Fig. 8. is a sectional view of our convertible flue appliance closed and somewhat
different to the foregoing in the method and means for operating the door or flap.
Fig. 9. is a sectional view of the last named combination in the open form.
The rectangular hood A (Fig. 1.) and the rectangular frame B which is behind it,
the flap or door C and the fire cover D constitute the chief means for effecting the
transitions before named and in this illustration represent the open fire arrangement
-the reclining door C and the open end E of the hood A affording a convenient
escapement for the smoke and flame into the flue behind the range.

page_text: The rectangular frame B (figs. 1. and, 5.) is immoveably fixed to the range and
serves the double purpose of elongationg the temporary flue, formed by the hood A
and an agent for elongating and lowering the flap or door C.
The travelling hood A is made a little larger than the fixed frame B in order that
the former may slide back and forward over the latter as the hood is drawn forward
towards the fire or pushed back from it. In order that the hood may not be drawn
too far forward a stop arrangement is employed consisting of such means as the
following, viz. one or more slots F in the frame B and one or more associate pins or
studs G on the under side of the hood A which studs travel in the slots until restrained
by the closed ends of the slots as shown in Fig. 3. The stop arrangement might consist
of other simple mechanism operating similarly to those just described.
The stop
arrangement allows the hood A when drawn forward to be lifted
up
the frame D and as readily replaced; the door C being placed loosely between the
hood A and the frame B may be easily removed and replaced by first removing the
hood in the manner just indicated.
and renioved from
In Fig. 6. which is a back view of the hood, A, the pins G are shewn and a
flange H; the latter supplying a ledge upon which a flap or door C is placed and by
means of which ledge the flap is carried back and forward with the hood.
A back view of the flap or door C is shown in Fig. 7 with a flange J across the
back of it and a recessed part K at the top. The flange J is for the purpose of
reclining the door, C, figure 4 where the said flange reposes in a groove, or stop, I, in
the base plate M and the recess K receives the pendant tongue or stop N, figs. 2. 4
and 5 which tongue prevents the door from falling forward when the hood is drawn
outward. The narrow apertures or slots P, figure, 5, afford a suitable recess for the
reception of the flanges H when the hood A is pushed back.
In fig. 3 the hood is shewn extended to the back of the fire and the fire cover Q
pushed back underneath the hinderpart of the hob-the door C resting on the ledge H
and held by the flange J resting in the stop or groove L.
In fig. 4 the hood is pushed back and the flue closed by the door C which being
jammed between the front edges, R, of the frame B, and the back part of the
moulding S, is compelled to rise into a vertical position as the hood, A, is pressed
backward and thus automatically closes the convertible, or alternative, flue.
In figs. 8. and 9. the door e² is shewn resting upon a sloping flange T within the
frame 132 and the hood A² may be drawn forward without influencing the door at all-
the latter being pressed back upon the sloping flanges T-or raised into an erect
position by means of a "cup lifter" or hook and not automatically as previously
described.
1. Dated this 29th day of November 1887.

page_text: Improvements in Cooking Ranges.
We, GEORGE KINNAIRD of the Queen's Park Foundry Cavendish Street, Glasgow
trading under the style of Kinnaird and Ferguson Ironfounder, and ROBERT MCADAM
of 159 Cathcart Road Govanhill, Glasgow, foreman, do hereby declare the nature
of this invention and in what manner the same is to be performed, to he
particularly described and ascertained in and by the following statement :-
It relates to cooking ranges and has for its objects; 1st, to adapt them for use with
a closed top to the fire or an open one alternately as required: 2d. to render part of
the convertible flue apparatus by which such object is effected available as a hob for
cooking purposes; 3d. to make any necessary removal and replacement of component
parts of the said mechanism easy, and 4th. so to combine the parts of the convertible
Hue appliance that its various transitions may be easily effected with one hand only, in
contradistinction to those convertible flue appliances which require the use of two
hands for their manipulation.
We attain these objects by the mechanism which is illustrated in the following
diagrams which accompany the provisional specification in which
Fig. 1. is a perspective view of our convertible flue appliance, open.
Fig. 2. is a perspective view of our convertible flue appliance, closed.
Fig. 3. is a sectional view of our convertible flue appliance, open.
Fig. 4. is a sectional view of our convertible flue appliance, closed.
Fig. . is a perspective view of a fixed rectangular frame.
Fig. 6. is a perspective view of a loose rectangular hood.
Fig. 7. is a perspective view of a door or flap.
Fig. 8. is a sectional view of our convertible flue appliance closed, and somewhat
different to the foregoing in the method and means of operating the door or flap.
Fig. 9. is a sectional view of the last named combination in the open form.
The attainment of the before named objects is further effected by the mechanism
which is illustrated in the diagrams contained in Figs. 10 to 20 herewith and which
are modifications and variations of the hood A and the frame B which are shown in
Figs. 1 to 9, and which variations (or similar ones) are all within the compass of our
invention. The fixed frame B may be considerably varied from the specific forms
here shewn without departing from our invention and similar variations inay be made
in the details of the hood A.
Figs. 10, 13 and 14 are back views, in perspective of the moveable hood with its
sliding roof plate provisions.
Figs. 11 and 16 are back and front views, in perspective, of the fixed frame over
which the moveable hood slides.
Fig. 12 is a back view, in perspective, of the hood placed in its (close fire) position
over the fixed frame.
Fig. 15, 17 and 19 are front views in perspective of the moveable hood adapted for
use with the sliding roof plates shewn in Figs. 18, 20 and 15.

page_text: The rectangular hood A. (Figure, 1.) and the rectangular frame B which is behind
it, the flap or door C and the fire cover Q, constitute the chief means for effecting
the transitions before named and in this illustration represent the open fire
arrangement the reclining door C. and the open end E, of the hood A, affording a
convenient escapement for the smoke and flame into the flue behind the range.
The rectangular frame B. (figs. 1. and 5) is immoveably fixed to the range and
serves the double purpose of elongating the temporary flue, formed by the lood A
and an agent for elevating or lowering the flap or door C.
The travelling hood A is made a little larger than the fixed frame B in order that
the former may slide back and forward over the latter as the hood is drawn forward
towards the fire or pushed back from it. In order that the hood may not be drawn
too far forward a stop arrangement is employed consisting of such means as the
following, viz.: one or more slots F. in the frame B. and one or more associate pins
or studs G on the under side of the hood A which studs travel in the slots until
restrained by the closed ends of the slots as shewn in Fig. 3. The stop arrangement
might consist of other simple mechanism operating similarly to those just described.
The stop.arrangement allows of the hood A when drawn forward to be lifted up and
removed from the frame B and as readily replaced; the door being placed loosely
between the hood A and the frame B may be easily removed and replaced by first
removing the hood in the manner just indicated.
In fig. 6 which is a front view of the hood A. the pins G are shewn and a flange H
the latter supplying a ledge upon which the flap or door C (Fig. 1) is placed and by
means of which ledge the Hap is carried back and forward with the hood.
A back view of the flap or door C. is shown in Fig. 7. with a flange J, across the
back of it and a recessed part K, at the top. The flange J is for inclining the door C
as shewn in Fig. 3. where the said flange reposes in a groove or stop L, (see Figure 5)
in the base plate M, and the recess K, receives the pendant tongue or stop N, figs. 2. 4
and 5, which tongue prevents the door falling forward when the hood is drawn
outward. The narrow apertures or slots P. fig. 5 and steps 12 figs. 11, 12 and 16
afford suitable recesses for the reception of the flanges H when the hood A is
pushed back.
In Fig. 3. the hood is shewn extended to the back of the fire and the fire cover Q,
pushed back underneath the hinder part of the hob, the door C, resting on tlie ledge H,
and held back by the flange J which flange rests in the stop, or groove, L. The
flange may be greatly varied in its form and position on the door C. In fig. 4. the
hood is pushed back and the flue closed by the door C which being jammed between,
the front edges (R) of tlie fixed frame B (see figs. 5, 11 and 16) and the back part
of the moulding S. is compelled to rise into a vertical position as the hood ▲ is
pressed backward and thus automatically closes the convertible, or alternate, flue.
In figs 8 & 9. the door C is shewn resting upon a sloping flange T within the
frane B and the hood A² may be drawn forward without influencing the door at all
-the latter being pressed back upon the sloping flanges T or raised into an erect
position by means of a cup lifter" or hook and not automatically as previously
described.
"
We find that the hood A as shewn in Fig. 6. is somewhat objectionable when the
range is used with a closed fire as it affords no aperture for the heat which passes
beneath and (upwards) behind the back boiler of the range to escape into the upper
flue. We have therefore constructed the hood as shown in Figs. 17 and 19 where it
will be seen that the sides of the hood A³ are much longer than its roof plate, the
aperture thus formed at the back part of the hood affording a free passage for the
smoke and flame proceding from beneath the boiler to the upper flue. A loose.
sliding cover plate (Figs. 15, 18, or 20) is fitted upon the hood and is automatically
projected backward over the aperture (before named) when the hood is drawn forward
for open fire purposes and is automatically prevented (by stops) from closing the
boiler flue aperture when the hood is pushed back for close fire purposes. The stops
or flanges P³ upon the fixed frame B³ (figs. 11... 12 and 16) prevent the said loose,
plate being pushed too far back and the Hanges S², upon the sliding roof plate R2

page_text: (figs. 10. 12. 13. 15. 18 and 20) serve as stops to prevent the hood being drawn too
far forward. In figs. 10 to 14 inclusive we have shewn the loose roof plate R²,
fitted within grooves on the upper surface of the hood and in figs. 15 to 20 we have
shewn two other forms of constructing and operating the loose roof plate R³ R³
and R, and such provisions may be still further varied.
The convertible flue appliances thus detailed are operated as follows: When the
arrangement is closed against the back of the range and the door C is in an upright
position covering the front flue aperture E in the hood A (or A³) the loose sliding
roof plate R (R or R) rests upon the fast roof plate of the hood and is prevented
from being pushed back over the boiler flue space (by the stops P³, which are upon
the fast frame B³) and as the hood is drawn forward upon the hob towards the back
part of the fire, the door is induced to fall down until the flange J (fig. 7) reposes
in the groove L: the loose roof plate R² (R³ or R') travels with the hood as it is
drawn forward until the upright part (or parts) S reach the framework of the range
and prevent its further progress; the hood being drawn still further forward until
the stops P engage with the loose roof plate and framework of the range and the
hood is then in position for use with an open fire; the fire cover Q is then pushed
backward beneath the "back strap" of the range and the transition is complete.
To re-close the apparatus, the fire cover Q must be drawn forward over the fire and
the hood pushed back; the latter, in its passage backward, jams the door C between
its framework and the front margin of the fixed frame B (or B³) and causes it to rise
erect whilst the loose roof plate R² (R³ or R) is stopped in its backward travel by
the fixed stops P³ (or any similar, equivalent means or mechanism.
We sometimes provide a circular aperture & cover plate in the fast roof of the
hood A. and employ them & the roof of the hood as a hob for cooking purposes.
We are aware that, previous to our invention, a rectangular moveable hood, which
had side plates projecting backward beyond the roof plate thereof has been employed
in a cooking range; also a door, or flap, similar to the one herein marked C, which
door was confined within a cooking range telescopic flue, composed of two (principal)
moveable portions and (which door) was made to fall down and backward when the
flue box (or hood) was drawn forward; these appliances being employed for purposes
similar to those herein described.
We are also aware that many and various methods exist for sliding back the fire
cover (Q) beneath the "back strap" of a cooking range similarly to that shewn
herein.
It will therefore be understood that we do not claim such devices and combinations
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
1st. In a cooking range the combination therewith of automatic (and other) opening
and closing mechanism in connection with a convertible flue appliance, all substantially
as herein described and shewn and for purposes specified.
2nd. In a cooking range the combination therewith of a fixed framework such
as B, B2 or B³ in connection with a moveable, convertible, flue hood such as A,
or A³ all substantially as herein described and shewn and for purposes specified.
11
$ 1000
JOSEPH LOCKWOOD,
Langside, Glasgow,
Agent for the Inventors.