IMPROVEMENTS IN STOVES AND RANGES
Year: 1877

page_text: LETTERS PATENT to Robert Crosthwaite, of Upper Thames Street, London, in
the County of Middlesex, and John Robinson Crosthwaite, of Union Foundry,
Falkirk, in the County of Stirling, N. B., for the Invention of " IMPROVEMENTS
IN STOVES AND RANGES."
Sealed the 16th November 1877, and dated the 6th June 1877.
PROVISIONAL SPECIFICATION left by the said Robert Crosthwaite and John
Robinson Crosthwaite at the Office of the Commissioners of Patents on the 6th
June 1877.
ROBERT CROSTHWAITE, of Upper Thames Street, London, in the County of
Middlesex, and JOHN ROBINSON CROSTHWAITE, of Union Foundry, Falkirk, in
the County of Falkirk, N. B. "IMPROVEMENTS IN STOVES AND RANGES.'
Our improvements in stoves and ranges have reference more particularly to the
construction of a fire-place with oven, boiler, and flues in connection therewith,
so as to obtain a large heating surface and cooking capacity in a small compass,
and also to the arrangement of the various parts in such a manner as to
expose a large area of surface to the room while requiring only a small opening
in the wall.
In the ordinary construction of range the front only is exposed, while the
back and two sides are built into the brickwork, necessitating costly setting, and
if a kitchener be used, requiring in addition a delicate arrangement of flues;
but with our improved range, which partakes partly of the character of a closed
stove, we surmount these objections by setting it cornerwise or diagonally into the
opening, thus exposing two sides or fronts to the room and construct it with all the
parts self-contained.
The construction of our range is as follows:-When complete and ready for fixing
it presents a cubical shape or nearly so, having at the top and to the front
corner of one of the fronts a fire-place with a front surface, equal to about two-
thirds of the length of the front, with a depth backward of about one-quarter of
the length of the other front which would form one end of it, the other end being.
formed by part of the boiler side; the back of the grate would be formed by the
.

page_text: whole or part of one side of the oven, the opposite side of the oven being within
about three inches of the back, the front of the oven with the closed end of
the fire-grate forming the other exposed front of the stove; the back of the oven is
in a line with end of fire-place and against one side of the boiler, the opposite side
of the boiler being the outside of the stove.
Between the tops of the oven and boiler and the top of the stove is a flue which
passes from thence down behind the oven, and then under the oven and boiler,
and up behind the boiler into the chimney; underneath the grate and in front of
the oven is an ashpit; in connection with the flues are dampers, so arranged that
the flame may be turned in either direction as required, whether for heating the
under side or the top of the oven first.
For feeding the fire we arrange a movable top to allow of the fuel being put
immediately on to the fire. The whole of the top of the stove, and also the front
of grate, when let down, form hot plates, the top having circular openings fitted with
covers into which saucepans may be put for cooking.
Our stove requires no particular arrangement of setting, requiring merely to
be placed in a diagonal opening in the wall to the extent of one-half its deptlı, or
less, as may be desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Crosthwaite and John Robinson Crosthwaite in the Great Seal
Patent Office on the 1st December 1877.
::
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ROBERT CROSTHWAITE, of Upper Thames Street, in the County of Middlesex,
and JOHN ROBINSON CROSTHWAITE, of Union Foundry, Falkirk, in the County of
Stirling, N. B.
IMPROVEMENTS IN STOVES AND RANGES."
Our improvements in stoves and ranges have reference more particularly to
the construction of a fire-place with oven, boiler, and flues in connection therewith,
so as to obtain a large heating surface and cooking capacity in a small compass,
and also to the arrangement of the various parts in such a manner as to
expose, a large area of surface to the room while requiring only a small opening
in the wall.
+
Ranges! are usually, constructed to leave the front only exposed; the back and
sides being built into the brickwork, and when kitcheners are used, requiring in
addition a peculiar and complicated. arrangement of flues; but our improved range is
entirely, self-contained, and may be used without any setting whatever, or merely
set diagonally into an opening connected with a flue or chimney.
The construction and arrangement of our improved stoves and ranges and the
flues in connection therewith, will be clearly understood on reference to the two
Sheets of Drawings annexed hereto, Sheet 1 illustrating various views of our
cubical range and self-contained flues as constructed for setting diagonally in an
opening. Sheet 2 represents a. similar arrangement of flues applicable to close fire-
ranges, American stoves, or other fire-places.
Commencing our description with Sheet 1, it will be seen that Figure 1 gives
an, isometrical view or elevation of our improved cubical stove when completely
fitted and ready for use, shewing clearly its general appearance. The two front

page_text: sidos project into the room, allowing easy access to the fire and boiler on one side
and the oven on the other side, while the remaining two sides are let into the wall
or recess made for the purpose, the smoke from the flue at the back corner passing
through a sheet-iron or other tube into the chimnoy.
Figure 2 is a vertical section through the fire-place, ash-pit, and oven, shewing their
relative positions with the surrounding flues.
Figure 3 is a horizontal section or plan just below the top, and Figure 4 is a
similar horizontal section, but taken underneath the oven and boiler, similar letters
having reference to similar parts on the various views.
A, B, and C are fire-bars, forming, with the fire-brick, back and sides; the fire-
place D is a shutter hung or hinged to the front of the grate, and fitted with venti-
lators; this shutter folds up over the front of the fire-bars, air for combustion being
admitted through the ventilators; or if desired the shutter my be let down to form
á shelf in front of the fire, as shewn in Figure 1; E is a similar shutter also fitted
with ventilators in front of the ash-pit which may be let down or removed when
necessary for cleaning; F is a feed: door formed of part of the front of the hob,
and hinged or hung at the bottom so that when open the part of the front
projects at right angles, while the part of the top rises perpendicularly and pre-
vents the fuel-from falling over the front edge; G, G, shew the position and shape
of the oven abutting against the fire-place, ash-pit, and boiler, and having flues, as
shewn; on the remaining sides and at the top and bottom, the door opening from one
of the projecting fronts.
The boiler takes up nearly the whole of the back or end of the range, being
enclosed between the end of the fire J, K, the back of the oven J, I, the end of the
flue I, H, and the end-plate M, L... The top of the boiler is at the same level as the
top of the oven, except at the front, where there is: a nozzle carried up to the hot
plate for the supply of water, and covered by a movable part of the hob N; the
bottom of the boiler, may be at the same level as the bottom of the oven, or
kept above that level if desired. The hot plate or hob has four circular openings
for pans to rest in, provided with covers Q, Q, also an opening with cover R
for cleaning out the back flue; at the back corner is a nozzle for conducting
smoke to the chimney.
When the stove is in action the heated gases may be made to pass in any required
direction by means of the dampers and flame plates; on opening damper L. by
handle S, damper 2 being closed, the gases would pass over the top of the oven
and up flue 3; by closing dainper I. by handle S, damper II. remaining shut, the
communication would be over the top of oven down flue II, through flue I., round
flame plate II., and up flue III. By opening damper II. and raising flame plate I.,
hinged at Z, by handle W, damper I. remaining shut, the communication would be
under the oven and boiler, and then up flue III.; flame plate II. is fixed and serves
to throw the flame over a larger surface.
Sheet 2 shews our improved arrangement of flues to ordinary heating stoves,
Figures 1 to 5 inclusive, and to American stoves or close fire ranges, Figures 6 to 8
inclusive.
Figure 1 is a front elevation of an ordinary heating stove adapted to our
improved arrangement of Blues; Figure 2 is a horizontal section through the fire;
Figure 3, a plan with the top removed; Figures 4 and 5, vertical sections. In this
arrangement of stove the draught passes through the front bars A, through the fire
and the bottom bars B into the side flues C, Figures 1, 2, and 3, or into the back
flue C, Figure 5, thence to the chimney by the back outlets D, D, Figures 1 and 3,
or D, Figure 5. Above the fire is hung a damper E to prevent the rise of smoke;
this damper falls to admit fuel which is put in through the feed door F. The feed
door F also acts as a ventilator by allowing air to pass direct to the chimney.
Figures 6 to 8 inclusive shew an adaptation of our improved arrangement of
flues to close fire ranges and American stoves, Figure 6 being a section through
the fire oven and boiler; Figure 7, a plan with the top removed; and Figure 8, a
horizontal section at bottom of oven. In this arrangement the draught may be

page_text: made to pass either upward or downward; if upward it will pass over the oven
through the damper I. to the chimney, or if damper I. be shut it goes down flue 2,
through flue I, round flame plate 2 to flue 3, thence to 'the chimney. If required
to use the oven for baking, the draught, after passing downwards through the fire,
goes (damper I. being shut) down through damper 2 into flue I, then into flue 3,
thence to the chimney.
Having now particularly described and ascertained the nature of our Invention,
and how the same may be carried into effect, we would have it understood that
what we consider to be novel, and therefore claim as our Invention, is,
First. The arrangement and construction of a stove or range, having two pro-
jecting fronts or sides, one for the fire and boiler, the other for the oven, and the
various details in connection therewith, as herein-before described and illustrated by
the accompanying Drawings, Sheet I.
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Second. The arrangement and construction of heating flues with dampers and
flame plates used in conjunction with our improved range, as herein-before described
and illustrated by the accompanying Drawings, Sheet I.
J.L
"
"Third. The arrangement and construction of heating flues applied to ordinary,
stoves with dampers in connection therewith, as herein-before described and illus
trated by, the accompanying Drawings, Sheet 2, Figures 1, 2, 3, 4, and 5.
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Fourth. The arrangement and construction of heating flues applied to American
stoves or close fire ranges, with dampers and flame plates for turning the heated
gases in any required direction as herein-before described "and illustrated by the
accompanying Drawing, Sheet 2, Figures 6, 7, and 8.
In witness whereof, we, the said Robert Crosthwaite and John Robinson'
Crosthwaite, have hereunto set our hands and seals, this Twenty-seventh ?
T
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