Improvements relating to. Fire-grates and Stoves.
Year: 1889

page_text: Date of Application, 20th Apr., 1889
Complete Specification Left, 20th Jan., 1890-Accepted, 22nd Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements relating to. Fire-grates and Stoves.
I, JOHN WILLIAM SIZER of 16 Manor Street Chelsea S.W. Wood and Stove Carver,
do hereby declare the nature of this invention to be as follows:-
The object of my Invention is to so arrange the apparatus which I make use of in
such a manner that it shall not be possible for cold air to come down the chimney and
force the smoke, produced by the fire, out into the room, but that all smoke produced
shall be caused to pass directly up the chimney.
In fire grates to which my improved device is adapted, at the back of the grate, the
back wall of the chimney is built out to meet the back of the receptacle for fuel serving
also as a support for the metal box hereinafter referred to; and above this, out of
view, I place an oblong metal box having holes at each end and at the back, this
a door
box being provided at the top with a metal flue, and at the underside with
which opens inwards; in this door is arranged a sliding grating which can be
opened or closed at will.
When a fire is made in the grate below the aforesaid device the door above
referred to is opened allowing the smoke to pass through the box before
referred to.
Should the chimney be very faulty-through bad construction or from other
sources in the way of forcing the smoke out into the room-it is only necessary
to shut down the door of the oblong box and open the sliding grating to a sufficient
width to create draught enough to draw the smoke up the chimney.
In the case of very narrow chimneys I do not make use of the oblong box,
combined with metal flue at the top, and sliding grating in the door at the under-
side, but instead, I use a long oblong metal .flue only, the ends of which are so
arranged that, in order to introduce this flue up the chimneys to the required position―
they being in two pieces and hinged both at their middle part and also where they
are attached to the sides, the metal flue can fold together without increasing its
width; In this folded state the flue is passed up the chimney to the required
height, there made to resume its normal. shape, and then is affixed to the brickwork
as in the former case.
In both of these cases, to the back of the firegrate are attached two metal rods
standing out into the chimney at. right angles to the metal body of the grate, and
to these rods are adapted metal eyes, into which fit screwed studs depending from
the oblong box in the former, and from the oblong flue in the latter, case; when
these screwed studs are passed. through the eyes they are fixed in position by means
of nuts screwed on them under the eyes.
+
Dated this 10th day of Anril 1880
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Fire-grates and Stoves.
I, JOHN WILLIAM SIZER, of 16 Manor Street, Chelsea, S.W., Wood and Stone
Carver, 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:
The object of my Invention is to arrange the apparatus which I employ in such a

page_text: manner that it shall not be possible for cold air to come down the chimney and force
the smoke, produced by the fire, out into the room, but that all smoke produced shall
be caused to ascend directly up the chimney.
In the accompanying drawing Figure 1 is an end elevational view of the apparatus
constructed in accordance with my Invention and Figure 2 a detached view of the
oblong box hereinafter referred to. Figures 3 to 6 inclusive represent detail views of
the metal flue employed in connection with my said Invention and Figures 7 and 8
elevational and plan views respectively of an arrangement intended for use with
chimneys having narrow inlets.
a
In accordance with my Invention I employ an oblong box A having openings
at each end at front and at the back. This oblong box is supported out of sight
above the fire grate by projections built out of the chimney walls. The box,
which may have lugs cast thereon as at 6 Figure 2, is open at the underside
where it is provided with a door or flap B hinged to the ends of box at c. In
combination with this hinged door or flap I employ a sliding grating d which
travels longitudinally to and fro over the corresponding openings formed in the
door or flap and thus regulates the upward current which is induced through the box A.
The box A is provided at the top with a metal flue C. This metal flue preferably
consists of a series of copper pipes-either square, round or oval in cross section-
enlarged at their lower ends so as to rest one on the other, whilst the lowest pipe is
connected to the box A by studs e which are passed through holes e¹ and secured by
nuts or analogous fastenings. These pipes are connected together as shown more
particularly in Figures 4 and 5. Two brackets or carriers g are rivetted to the lower
end of each pipe, copper or other metal strips g—which are rivetted to the upper end
of each pipe being inserted through said brackets g and afterwards turned over.
When a fire is made in the grate below the aforesaid device the door B is opened
allowing the smoke to pass through the box A. Should the chimney be unusually
faulty it is only necessary to shut down the door B and open the sliding grating to a
sufficient width to create draught enough to draw the smoke up the chimney. A
suitable toothed rack is employed to retain the hinged door B at any required angle.
I prefer to form the box in two or more parts, these parts being bolted together when
placed in position.
Where circumstances would not permit of the employment of the oblong box above
described in combination with the metal flue C a ring & Figures 5 and 6 having holes
for the reception of the studs e and radial arms or lugs for supporting the metal
flue, above the fireplace on the projecting supports formed by the chimney walls might
with convenience be employed in lieu of said oblong box.
Figures 7 and 8 illustrate an oblong metal flue F which I use in cases where the
opening leading into the chimney is very narrow. The sides, f, and f" f" are
hinged together at their four meeting corners. In addition the sides f¹,, are also
hinged longitudinally in the centre and a rod i, bent to the form which the flue F
assumes when in use, is hinged at the lower end at i¹. By raising the rod i the sides
of the flue can be folded together in a very narrow compass and in this folded state
the flue is passed up the chimney to the required height whereupon it is caused to
assume its normal shape-by lowering the rod -and fastened in the requisite
position.
1 provide lugs or projections on the flue to prevent the latter from coming in
contact with the walls of the chimney and so causing soot to congregate, and I fit
small runners or wheels on the end of the topmost pipe of the flue so as to permit of
the flue passing any bend in the lower part of the chimney. Further, in both of the
arrangements hereinbefore described I may attach two metal rods at the back of the
firegrate which stand out into the chimney at right angles to the metal body of
the grate and to these are adapted metal eyes into which would fit screw studs
depending from the oblong box in the one case and the oblong collapsible flue in
the other.

page_text: 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 I
claim is :-
The improvements relating to fire grates and stoves consisting essentially in the
employment of an oblong box A with hinged door B and sliding grating d, metal
flue C-used in combination with, or separately from the oblong box A,-collap
sible or folding metal flue F and means, substantially as herein described and
shown, for connecting the various parts together.
Doted this 18th day of January 1890.
JAMES
STEVENSON,
20, High Holborn, London, W.C., Agent for Applicant.
JAMES STEVENSON,
20, High Holborn, London, W.C., Agent for Applicant.