Improved Fiue Devices for Stoves and Cooking Ranges.
Year: 1892

page_text: Date of Application, 14th Apr., 1892
Complete Specification Left, 14th Jan., 1893-Accepted, 18th Mar.. 1893
PROVISIONAL SPECIFICATION.
Improved Fiue Devices for Stoves and Cooking Ranges.
We ALEXANDER BROWN, Ironfounder, and ROBERT BURNS BARR, Foreman
Pattern Maker, both of the Forth and Clyde Iron Works, Falkirk, County of
Stirling, North Britain, do hereby declare the nature of this invention to be as
follows:-
This invention relates to stove and cooking ranges, whichever name is variously
used herein to describe them, and has for its object to adapt them for being used
alternately with a closed or an open top to the fire.
We effect this object, chiefly, by means of our improved flue devices which
operate conjointly with a removeable plate for covering over the fire (the "fire
cover"): the devices consist of several parts.
In the lower part of the chimney connected with a stove or cooking range, we
insert a moveable flue which is so constructed and so combined therewith, that it
may be partially drawn out at an opening in the chimney front and rest upon the
hob of the range in line with the fire back. The "fire cover "is then removed from
over the fire box. The apparatus, when thus drawn out, lies horizontally upon the
bob and presents an open tunnel flue, leading from the back of the fire into the
chinney. The stove is then adapted for open fire purposes.
When the cover is again placed over the fire this tunnel flue is partially pushed
back into the chimney and then turned into a vertical position, so that its roof plate
may act as a damper to close the before named opening in the chimney front.
This operation converts the structure into a "close fire one.
"
In carrying out our invention, we construct a moveable flue piece, resembling a
stool in form, consisting of a top plate and two side plates depending therefrom,
and furnished with pivots, grooves, slots or flanges for engaging with immoveable
sockets or stop pieces fixed to the range.
The purposes for which these pivots, grooves or stops, working conjointly, are
designed, are, first, to prevent the flue piece from being drawn too far out from, or
pushed too far into the chimney, and, second, to serve the purposes of a fulcrum in
tilting the flue piece into a vertical or into a horizontal position, alternately as
required.
When this apparatus is closed the operation for opening it is as follows: the
moveable flue piece which is then in a vertical position is drawn outwards at its
lower end from the chimney and as it is pulled forward bears upon side pivots until
it assumes a horizontal position level with the hob, half of the flue piece
protruding forward from the chimney and resting upon the hob, the other half of
it remaining within the chimney. The flue piece can then be drawn forward the
remaining half of its length towards the back margin of the fire, one or more stop
pieces preventing its complete withdrawal, (unless required) and it is then suitable
for use with an open fire.
To close up the apparatus again the flue piece requires pushing back half its
length into the chimney when the pivots are brought into operation and serve to
tilt it into a vertical position; the lower end of the flue piece closing the aperture
leading into the chimney.
Although the complete removal of the flue piece is partially prevented by the
stop or stops before named, its entire withdrawal can be effected by tilting it up
suitably at the foremost end when it has been extended to its full length upon the hob.
Dated this Twelfth day of April 1892.

page_text: COMPLETE SPECIFICATION.
Improved Flue Devices for Stoves and Cooking Ranges.
We, ALEXANDER BROWN, Ironfounder, and ROBERT BURNS BARR, Foreman
Pattern Maker, both of the Forth and Clyde Iron Works, Falkirk, County of
Stirling North Britain, 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 name is variously
used herein to describe them, and has for its object to adapt them for being used
alternately with a closed or an open top to the fire.
We effect this object, chiefly, by means of our improved flue devices which
operate conjointly with a removeable plate for covering over the fire (the "fire
cover") the devices consist of several parts.
In the lower part of the chimney connected with a stove or cooking range, we
insert a moveable flue, which is so constructed, and so combined with the chimney
that it may be partially drawn out at an opening in the chimney front and rest
upon the hob of the range in line with the fire back.
The apparatus, when thus drawn out lies horizontally upon the hob and presents
to view the open end of a tunnel flue, leading from the back of the fire into the
chimney. The "fire-cover" being removed from over the fire box, the stove is
then adapted for open fire purposes.
In order to reverse this arrangement the cover is again placed over the fire, the
tunnel flue is partially pushed back into the chimney and turned into a vertical
position, so that its roof plate may act as a damper to close the before named
opening in the chimney front. This operation converts the structure into a close
fire one.
In carrying out our invention, we construct a moveable flue piece, resembling a
stool in form, consisting of a top plate and two side plates depending therefrom,
and furnished with pivots, grooves, slots or flanges for engaging with immoveable
sockets or stop pieces fixed to the range.
The purposes for which these pivots, grooves or stops, working conjointly, are
designed, are, first to prevent the flue piece from being drawn too far out from, or
pushed too far into the chimney, and, second to serve the purposes of a fulcrum in
tilting the flue piece into a vertical or into a horizontal position, alternately as
required.
When this apparatus is closed the operation for opening it is as follows;
The moveable flue piece which is then in a vertical position is drawn outwards at
its lower end from the chimney and as it is pulled forward bears upon side pivots
until it assumes a horizontal position level with the hob, half of the flue piece
protruding forward from the chimney and resting upon the hob, the other half of it
remaining within the chimney. The flue piece can then be drawn forward from
within the chimney the remaining half of its length towards the back margin of
the fire, one or more stop pieces preventing its complete withdrawal, (unless so
required) and it is then suitable for use with an open fire.
To close up the apparatus again the flue piece requires pushing back half its
length into the chimney when the pivots, are brought into operation and serve when
operated as herein described to tilt it into a vertical position: the lower end of the
flue piece closing the aperture leading into the chimney.
Although the complete removal of the flue piece is partially prevented by the
stop or stops before named, its entire withdrawal can be effected by tilting it up
suitably at the foremost end when it has been extended to its full length upon
the hob

page_text: in order that our invention may be perfectly understood and easily carried into
effect we have prepared the accompanying set of drawings in which ;-
Fig. 1 is a perspective view of our improved flue devices in combination, adapted
for open fire purposes;
Fig. 2 is a perspective view shewing our improved moveable flue piece removed
from the chimney;
Fig. 3 is a perspective view of the metal chimney only, shewn in Fig. 1 without
the moveable flue piece;
Fig. 4 is a view in perspective shewing the external appearance of our improved
devices in their "close fire" combination;
Fig. 5 is a sectional elevation of the parts as they are shewn in Fig. 1, with the
moveable flue piece drawn out from the chimney to its full extent;
Fig. 6 is a sectional eleration of the same parts as we have shewn in Figs. 1
and 5 but with the moveable flue piece only partially drawn out from the
chimney;
Fig. 7 is a sectional elevation similar to Figs. 5 and 6 but with the moveable flue
piece tilted into a vertical position within the chimney;
Fig. 8 is a view in elevation and section shewing the relative positions of certain
parts.
In these drawings A represents a cast metal chimney and B a moveable flue piece
for combination therewith each made according to our invention.
The immoveable sockets or stop pieces a¹ a¹ Fig. 3, forming part of the chimney
front plate, marked a³, and the associated pins marked 6' and flanges 6' forming
parts of the moveable flue piece B in Figs. 1 to 7 comprise the chief elements of
novelty in connection with our combined flue appliances and are all-important, as
accessories necessary for effecting the twofold object herein before described.
Apart from these, or equivalent, accessory devices our cast metal chimney A. and
rectangular flue piece B are devoid of novelty.
Into the opening marked as which is formed within the chimney plate a³ Fig. 3,
we insert the flue piece B, Fig. 2, by slightly tilting it up in front as shewn in
Fig. 8. This tilting is necessary in order to allow the flanges marked b³ to get past
the stop piece a Figs. 1 to 7. The same tilting operation is required, also when
completely withdrawing the flue piece B from the chimney.
The flue piece B, being thus introduced into the chimney is lowered upon the
hob D, as shown in Figs. 1 and 5 in close proximity to the fire back C. In this
position the full length of the moveable tunnel flue piece B is available for open
fire purposes.
The combination of the aforesaid accessories a¹ a³ 6¹ and 6' with A and B adapt
the said flue piece B for being pushed backwards various distances for about half
its length into the chimney A after its insertion therein as just described until the
pivots marked b' enter into the sockets a', which also operate as stops to prevent its
further progress; this position is illustrated in Figure 6.
After the flue piece B has been thus introduced into the chimney, as shewn in
Fig. 6, then by applying a downward pressure at the socket marked b³, the pins b¹,
confined in and operating conjointly with the sockets a' act as a fulcrum and enable
the flue piece B to be tilted into a vertical position completely within the chimney A,
and behind the plate marked a² as shewn in Figs. 4 and 7. In this position part
only of the top plate of the moveable flue piece B acts as a door or damper to close
the opening as the remainder of the top plate being within the chimney.
The flue parts A and B combined, as shewn in Fig. 7 upon the hob D of a stove
or range and adjacent to a fire space, indicated at C in these drawings, represent
our improved devices in their close fire arrangement: thereafter
By inserting a suitable tool in the socket 6 and pulling slightly forward that part
of the flue piece B, it is easily revolved upon the pins into the position shewn in
Fig. 6 and in either that arrangement or in that delineated in Fig. 5 we have
shewn the combination of the parts A, B, C and D as adapted for open fire
purposes.

page_text: As the "fire cover" in a combined open and close fire stove or range is well
known and forms no essential part of, but is simply operated in conjunction with, our
invention, in any ordinary manner, we have refrained from shewing it in the
drawings.
As illustrated in the drawings our improved portable flue piece B operated in:
conjunction with the chimney plate a' is adapted for forward and backward horizontal
movements (in order that it may form a long or short flue) as well as tilting and
revolving ones, according as required.
As modifications of our devices we sometimes transpose the pins b¹ and stops a¹
putting the stops upon the flue piece B and the pivots 6¹ or their equivalents, upon
the right and left sides of the opening a the construction and operation of the
several parts being in all other respects, the same as herein before described and
drawn.
We are aware that previous to our invention numerous combined open and close
fire flue devices, both patented and otherwise, have been made and combined with
stoves and cooking ranges in which was included a rectangular flue piece composed
principally of a top and two side plates variously united with, and operated in con-
junction with, the chimney or back flue of the apparatus for generally effecting the
object herein before described. It will therefor be understood that we do not claim,
broadly, the construction of such a rectangular moveable flue piece or cast metal
chimney as our invention, unless they be furnished with accessories of the kind and
adapted for operation, in the manner, herein shewn, and described to be essential to
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 the open and
close fire flue devices A, a¹ a³ a and B, ¹ and 6 constructed and adapted for
operation as herein described and drawn or any mere modification thereof, for the
purposes specified.
Second. In a stove or range the combination therewith of devices whereby the
single flue piece B is adapted for being operated horizontally and vertically within
the upright flue A substantially as herein described and drawn or any mere
modification thereof for the purposes specified.
Third. In a stove or range a single moveable flue piece having a combined
telescopic and tilting movement, said flue piece, when closed, standing vertically
behind the frontal plate of the chimney, all substantially as herein described and
drawn, or any mere modification thereof, for the purposes specified.
Dated this Floventh day of January 1893.
JOSEPH
LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Applicants.