Improvements in Cooking Ranges.
Year: 1889

page_text: Date of Application, 30th Sept., 1889
Complete Specification Left, 7th June, 1890-Accepted, 12th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Cooking Ranges.
We GEORGE GORDON BRODIE of Catherine Street Aston near Birmingham in the
County of Warwick Ironfounder and JAMES DAMREL PRIOR of No. 143 Isledon Road
Finsbury Park London in the County of Middlesex Manager do hereby declare the
nature of this Invention to be as follows:-
Our invention consists of the improvements in or additions to cooking ranges herein-
after described whereby a more efficient control over the heating of the range is
effected and an approximate indication of the position of the dampers recorded and
the range otherwise improved.
One part of our invention consists of the construction and combinations of parts
herein after described for indicating the position of the sliding dampers of cooking
ranges.
"
To each of the parts of the covering in or top plate of the range where the handle
end of the rod of the sliding damper is situated to work the damper we fix a bracket
on which a circular dial is formed or cast the said dial having upon it the words
"
Shut "Slow "" Medium "Fast" (or .other equivalent words) in a circle or
part of a circle. Supported in front of and capable of traversing the said bracket dial
is a rotating pointer. This pointer carries a tube at its back which passes through
and rotates in the bracket and the rotating pointer is secured in its place by a collar
at the back of the bracket being pinned to the tube of the pointer. The rod of the
damper passes through holes in the rotating pointer and fixing collar. The outer or
handle end of the damper rod is twisted into a quick threaded screw the twists or
threads of which work closely in the angles of a square hole in the rotating pointer.
The result of this arrangement is that when the rod of the damper is drawn out or
pushed in the said pointer is rotated in one or other direction and made to traverse
the dial and indicate thereon the position of the damper. When the damper is pushed
fully in the pointer is situated opposite the word "Shut" on the dial. By drawing
out the damper rod more or less the pointer can be brought in succession opposite the
words "Slow""Medium" and "Fast"" thereby indicating the several portions of
the damper.
For the purpose of regulating the distance to which the damper can be drawn out
we fix upon its rod a regulating collar or stop which can be adjusted and fixed by a
set screw nearer to or further from the fixed bracket according to the range of motion
of the damper required.
When the damper is drawn out to its full extent the regulating collar or stop
bears against the back collar of the rotating pointer and the further outward motion
of the damper is prevented.
Or the following modified arrangement may be used for indicating the position of
the damper. We fix to the covering-in plate of the range a series of vertical brackets
arranged at a determined distance apart. On the bracket nearest the range is the
word "Shut" and on the other brackets are the words "Slow""Medium"
Fast." The rod of the damper slides in a hole in the first, bracket and by bringing
its head or knob opposite one or other of the brackets the position of the damper is
indicated.
86
-
In cooking ranges where it is desirable to control and shut off the passage of air to
the underside of the fire grate we use an ash pan with which a cinder sifter is com-
bined of the following construction. To the upper part of the front of the box of the
ash pan a flap having sides is hinged in such a manner that the said flap can be
turned down into an inclined position and pressed upwards into a vertical position.
In the former or open position of the flap air is permitted to pass to the underside

page_text: of the fire grate and in the latter or closed position of the flap access of air to the
underside of the fire grate is cut off. A little above the box of the ash pan an
oscillating frame of bars or cinder sifter is placed. This cinder sifter is so supported
at its inner end that its outer end can be raised and lowered so as to give a vibratory
or oscillating motion to the said cinder sifter and thereby cause the sifting of the
ashes which may fall on the said sifter. The lifting of the cinder sifter so as to give
a vibratory motion to it is automatically effected by the opening and closing of the
hinged flap of the ash pan by means of short arms or teeth on the knuckles of the
said hinged flap bearing against the underside of the cinder sifter near its front end.
Dated this 30th day of September 1889.
.
W. T. WHITEMAN,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Cooking Ranges.
We GEORGE GORDON BRODIE of Catherine Street Aston near Birmingham in the
County of Warwick Ironfounder and JAMES DAMREL PRIOR of No. 143 Isledon Road,
Finsbury Park London in the County of Middlesex Manager do hereby declare the
nature of our invention and the manner in which the same is to be performed
to be particularly described and ascertained in and by the following statement :-
Our invention consists of the improvements in or additions to cooking ranges herein-
after described whereby a more efficient control over the heating of the range is
effected and an approximate indication of the position of the dampers recorded and
the range otherwise improved.
One part of our invention consists of the construction and combinations of parts
hereinafter described for indicating the position of the sliding dampers of cooking
ranges.
دو
To each of the parts of the covering-in or top plate of the range where the handle
end of the rod of the sliding damper is situated to work the damper, we fix a bracket
on which a circular dial is formed or cast the said dial having upon it the words
"Shut" "Slow". "Medium "Fast" (or other equivalent words) in a circle or
part of a circle. Supported in front of and capable of traversing the said bracket dial
is a rotating pointer. This pointer carries a tube at its back which passes through
and rotates in the bracket and the rotating pointer is secured in its place by a collar
at the back of the bracket being pinned to the tube of the pointer. The rod of the
damper passes through holes in the rotating pointer and fixing collar. The outer or
handle end of the damper rod is twisted into a quick threaded screw the twists or
threads of which work closely in the angles of a square hole in the rotating pointer.
The result of this arrangement is that when the rod of the damper is drawn out or
pushed in the said pointer rotated in one or other direction and made to traverse
the dial and indicate thereon the position of the damper. When the damper is pushed
fully in, the pointer is situated opposite the word "Shut" on the dial. By drawing
out the damper rod more or less the pointer can be brought in succession opposite the
"
Medium and "Fast" thereby indicating the several positions of
the damper. For the purpose of regulating the distance to which the damper can be
drawn out we fix upon its rod a regulating collar or stop which can be adjusted and
fixed by a set screw nearer to or further from the fixed bracket according to the
range of motion of the damper required.
words "Slow".
_ "
When the damper is drawn out to its full extent the regulating collar or stop bears
against the back collar of the rotating pointer and the further outward motion of the
damper is prevented.
Or the following modified arrangement may be used for indicating the position of
the damper. We fix to the covering-in plate of the range a series of vertical brackets
arranged at a determined distance apart. On the bracket nearest the range is the
word "Shut" and on the other brackets are the words "Slow "" Medium "-
"Fast." The rod of the damper slides in a hole in the first bracket and by bringing

page_text: its head or knob opposite one or other of the brackets, the position of the damper is
indicated.
In cooking ranges where it is desirable to control and shut off the passage of air to
the underside of the fire grate we use an ash pan with which a cinder silter is com-
bined of the following construction. To the upper part of the front of the box of
the ash pan a flap having sides is hinged in such a manner that the said flap can be
turned down into an inclined position and pressed upwards into a vertical position.
In the former or open position of the flap air is permitted to pass to the under
side of the fire grate and in the latter or closed position of the flap access of air
to the underside of the fire grate is cut off. A little above the box of the ash pan
an oscillating frame of bars or cinder sifter is placed. This cinder sifter is so
supported at its inner end that its outer end can be raised and lowered so as to
give a vibratory or oscillating motion to the said cinder sifter and thereby cause
the sifting of the ashes which may fall on the said sifter.
The lifting of the cinder sifter so as to give a vibratory motion to it is automatically
effected by the opening and closing of the hinged flap of the ash pan by means of
short arms or teeth on the knuckles of the said hinged flap bearing against the
underside of the cinder sifter near its front end.
.
Figure 1 of the accompanying Drawings represents in front elevation and Figure 2
in side elevation a portion of a cooking range to which one of the arrangements of
our invention for indicating the position of the sliding dampers is applied. Figure 3
represents in front elevation and section the rotating pointer detached. The same
letters of reference indicate the same parts in Figures 1, 2 and 3.
a is the covering-in or top horizontal plate of the range and b is one of the side or
vertical plates of the same c is the sliding damper working in the flue d' as usual.
To the damper c the rod c² for working it is connected.
On the underside of the covering-in plate is a fixed vertical bracket & on which a
circular dial e is made or cast, the said dial having upon it the words "Shut"-"Slow"
"Medium". Fast" in a circle. In front of the said dial bracket d, e and capable
of traversing it is a rotating pointer the back tube f of which works in and is
supported by the said dial bracket d. The rotating pointer is secured in its place
by the collar g at the back of the dial bracket, the said collar being pinned to the
tube of the pointer is the handle end of the rod c² of the sliding damper the
said handle end e passing through a square hole f³ in the rotating pointer. The said
outer or handle end c³ of the damper rod is twisted into a quick threaded screw the
twists or threads of which work closely in the angles of the square hole³ in the
rotating pointer so that the pushing in or drawing out of the damper gives rotation
in one or other direction to the pointer. The sliding of the damper is effected by
pulling outwards or pushing inwards the damper rod by the external handle : is a
regulating collar or stop on the square part of the damper rod ². By means of a set
screw pin the said collar or stop can be adjusted and fixed on the damper rod at
the required distance from the fixed bracket d for regulating the outward range of
motion of the damper.
When the damper is drawn out to its full extent the regulating collar or stop h
bears against the back collar and the further outward motion of the damper is
prevented.
When the damper c is shut the parts of the indicating apparatus occupy the
positions represented in Figures 1 and 2 the rotating pointer f being situated
opposite the word "Shut" on the dial bracket d e.
"
"
By drawing out the damper by acting upon its rod the screw part 3 of the said rod
gives rotation to the pointer and the said pointer can be brought in succession
opposite the words "Slow".
Medium" and "Fast as may be required thereby
indicating the several positions of the damper. In this way a very efficient control
over the heating of the range is effected and an approximate indication of the position
of the dampers recorded.
Instead of using a circular dial on the bracket d a dial consisting of a portion of a
circle having upon it the words "Shut "-"Slow "-
or other
-
Medium
23
Fast
33

page_text: equivalent words may be employed. In this case the handle end of the damper rod
must be provided with a quicker threaded screw or twist than that represented.
Figure 4 represents in perspective a modified arrangement for indicating the
position of the dampers. is the handle end of the damper rod and a is the
covering-in plate of the range. On the said covering-in plate a series of vertical
brackets k, l, m, n is arranged at a determined distance apart. It will be seen
that the several brackets although in the same horizontal plane are not arranged
in the same line or opposite one another but the second bracket is arranged to
the left of the first bracket k, the third bracket in to the left of the second
bracket and so on through the series. On the first bracket & is the word "Shut,"
on the second bracket is the word "Slow”: on the third bracket m is the
word "Medium" and on the fourth bracket n is the word "Fast." The rod i
of the damper slides in the first bracket and by bringing its head opposite
one or other of the brackets k, l, m, n the position of the damper is indicated the
arrangement of the brackets represented enabling the position of the damper to be
readily seen from the front of the range.
Figure 5 represents in perspective and Figure 6 in side elevation partly in vertical
section the lower part of the fire grate of a cooking range to which a combined ash
.pan and cinler sifter constructed according to our invention is applied: p is the box
of the ash pan to the upper part of the front of which a flap q having sides is hinged
at q, so that the said Hap can be turned down into the position Figure 5 and dotted
line position Figure 6 or pressed upwards into the vertical position Figure 6. In the
open position of the flap Figure 5 air is permitted to pass to the underside of the fire
grate and in the closed position Figure 6 access of air to the underside of the grate
is cut off; s is the, cinder sifter consisting of a loose oscillating frame of bars. The
cinder sifter or frame of bars is supported on side ledges of the fire grate, one of
which ledges is marked in Figure 6, so that it can be raised and lowered the inner
end only of the cinder sifter when raised being supported on the ledges. The lifting
of the cinder sifters so as to give a vibratory motion to it is automatically effected by
the opening and closing of the hinged flap g of the ash pan p. This is effected
by means of short arms or teeth u on the knuckles 72, 72 of the hinged flap bearing
against the underside of the cinder sifter at its front end. In Figure 6 the cinder
sifters is represented in its lowered position resting on the ledges of the fire grate,
the arms or teeth u being taken out of action by the closing of the flap q. When the
flap q is turned down into the open position represented in Figure 5 and indicated in
dotted lines in Figure 6 the cinder sifter s is raised into the inclined position indicated
in dotted lines by the action of the arms u upon its front end as shown in the
Drawing.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we declare that we claim as our
invention of "Improvements in cooking ranges
""
First The arrangement or combination of parts substantially as hereinbefore
described and illustrated in Figures 12 and 3 of the accompanying Drawings for
approximately indicating the position of the sliding dampers of cooking ranges.
Secondly The arrangement or combination of parts substantially as herein before
described and illustrated in Figure 4 of the accompanying Drawings for approximately
indicating the position of the sliding dampers of cooking ranges..
:
Thirdly The combined ash pan and cinder sifter herein before described and
illustrated in the accompanying Drawings to be used in cooking ranges where it is
wished to control and shut off the passage of air to the underside of the fire grate of
the ranges.
Dated the Third day of June 1890
GEORGE GORDON BRODIE.
JAMES DAMREL PRIOR.