IMPROVEMENTS IN COOKING RANGES
Year: 1885

page_text: I, JOHN BAKER COLBRAN, of 247 High Holborn, in the County of Middlesex,
Salesman, do hereby declare the nature of my invention for IMPROVEMENTS IN
COOKING RANGES" to be as follows:-
My invention relates to cooking ranges and comprises the improvements herein-
after described.
One object of my said invention is to provide for controlling the passage of the
hot gases or products of combustion in such a manner that they can be caused to
pass around the oven in either direction.
For this purpose I employ two vertically sliding plates arranged to be operated
by a lever in such a manner that when one of the said plates is raised the other
plate is depressed. The said lever is pivotted upon a pin or stud at one side of the
fire-place. It has two long arms each of which engages with one of the said
plates; it also has a short arm to which is coupled a rod. This rod extends
through the front plate of the range into any convenient position and is preferably
provided with a knob or handle. The flues and the said sliding plates are so
arranged that, by moving the said lever in one direction, the said plates will be so
adjusted as to cause the products of combustion to pass over the top of the oven
then downward and under the oven and then escape through the main flue; and,
by turning the lever in the reverse direction, the said plates will be so adjusted as
to cause the products of combustion to pass under the oven, then upward and over
the oven and then escape through the main flue.
The said plates are preferably provided with projections which rest upon the
extremities of the long arms of the said lever.
Another object of my said invention is to provide for consuming the smoke more
effectually than heretofore. For this purpose I employ a drawer under the fire-
space and close to the under side of the bottom grate. This drawer is of the same
width as the fire-space or nearly so, and about from one to one-and-a-half inches
in depth. It is closed on the top with a thin metal plate, but the slides are left
open; in the front there is a grating arranged to be opened and closed. The said
drawer is so arranged that it can be removed to permit the cleaning of the fire-
place and to allow the ashes to fall through into an ash-tray.

page_text: By these means I provide for the supply of a current of hot air to the flue to
combine with the unconsumed smoke and gases and cause the combustion thereof.
The air enters the said drawer through the front grating, when opened, and passes
out at the sides into spaces between the fire-cheeks and side gratings and through
suitable apertures into the oven flues.
Another object of my said invention is to improve the construction of the
devices described in the specification of former Letters Patent dated 5th September,
A.D, 1884, N° 12063 for moving the cover of the fire-chamber backwards and
forwards. For this purpose, instead of providing the side levers or cheeks with
anti-friction rollers running upon curved projections, ribs, or cam-surfaces on the
side-plates of the boiler chamber, I provide anti-friction rollers which are fitted to
rotate upon pins or studs fixed in the said side plates, and I make the said levers
or cheeks with curved extensions which, when the said cover is moved in either
direction, ride upon the said rollers.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I, JOHN BAKER Colbran, of 247 High Holborn, in the County of Middlesex,
Salesman, 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:-
My invention relates to cooking-ranges and comprises various improvements
hereinafter set forth.
One object of my said invention is to provide improved means for controlling
the passage around the oven or ovens, of the hot gases or products of combustion.
Another object of my said invention is to provide more effectually than
heretofore for the consumption of the smoke And a further object of my said
invention is to improve the construction of the devices described in the speci-
fication of former Letters Patent, dated 5th September, A.D. 1884, No 12,063 for
converting the apparatus from an open range into a closed range and vice versa.
In the accompanying drawings:
Figure 1 is a plan of a range constructed according to my present improvements.
Figure 2 is a transverse section partly on the line x, x, and partly on the
line, Figure 1, showing the fire-cover in its closed position.
Figure 3 is a transverse section on the line x, x, Figure 1, showing the said cover
in the position which it occupies when the fire-chamber is open.
Figure 4 is a transverse section on the line x³, x³ Figure 1.
Figure 5 is a side elevation, drawn to an enlarged scale showing a part of my,
improved apparatus detached.
Figure 6 is a horizontal section on the line ³, x³, Figure 5 also drawn to an
enlarged scale.
Figure 7 is a front elevation of the range, partly in vertical section.
Figure 8 is a plan showing a modification of my invention.
Figure 9 is a transverse section partly on the line x, x, and partly on the
line,, Figure 8, showing the fire-cover in its closed position.
Figure 10 is a similar view showing the said cover in the position which it.
occupies when the fire-chamber is open.
Figure 11 is a plan showing a further modification of my invention.
Figure 12 is a transverse section on the line 2º, 2º, Figure 11, showing the fire.
cover in its closed position.
Figure 13 is a similar view showing the said cover in the position which it,
occupies when the fire-chamber is open.
Like letters indicate corresponding parts throughout the drawings.
a is the fire-chamber; b, c are the ovens; d is the boiler chamber or space.
e, e¹, are two vertically sliding plates provided with studs or projections e³. f is
a lever which is pivotted upon a pin or stud f¹. This lever has two long,
arms f, fs, each of which engages with one of the studs or projections 6. It also
has a short arm f' to which is coupled a rod g. This rod extends through the
front plate a¹ of the range, into a convenient position to be operated by hand, and

page_text: is preferably provided with a knob or handle g'. The flues h and the said sliding
plates e, e¹, are so arranged that, by moving the said lever into the position shown
in the drawings, the said plates will be so adjusted as to cause the products of
combustion to pass from the fire-chamber first over the plate e and over the top of
the oven, then downward and beneath the oven and under the plate e¹ as indicated
by the arrows in Figure 7. The said products of combustion then pass through
the aperture * and escape through the main flue h¹.. By pulling the rod g
outward, the said plates will be so adjusted as to cause the products of combustion
to pass under the plate e and beneath the oven, then upward and over the oven,
and over the top of the plate e¹, and then through the aperture h* into the main
flue h¹. I thus provide for enabling the oven to be heated to a higher temperature
at the top than at the bottom thereof, or vice versa.
i is a chamber or casing which is constructed like a drawer so that it can be
inserted between guides beneath the fire space a close to the underside of the
bottom as of the grate, and can be readily withdrawn therefrom. This device,
which I will hereinafter term the drawer, is of the same width as the fire-space, or
nearly so, and about from one to one-and-a-half inches in depth. It is closed at
the top and bottom by thin metal plates j, j and at the sides by plates ³ formed
with apertures 21; in the front of the drawer there are perforations k which may
be opened and closed at will by means of a sliding grating k¹, arranged in any
well-known or suitable manner. is a horizontal plate or partition which divides
the said drawer into two compartments leaving a passage is between the said
compartments. The said drawer can be readily removed to permit the cleaning of
the fire-place and to allow the ashes to fall through into an ash-tray.
When the perforations k are open, the heat of the fire causes a current of air to
pass through the same into the lower compartment then through the passage i³
into the upper compartment whence it passes through the apertures i¹ and the
apertures m in the sides of the fire-chamber into the flues h. During its passage
or circulation through the said drawer, the air becomes heated.
By these means I provide for the supply of a current of hot air to the flues to
combine with the smoke and heated gases and promote the combustion thereof.
o, o are the side levers or cheeks which, instead of being provided with anti-
friction rollers running upon curved projections, ribs or cam-surfaces on the side-
plates of the boiler-chamber, as described in the said former specification, are
provided with curved extensions p which, when the said cover is moved in either 3
direction, ride upon rollers q fitted to rotate upon pins or studs q¹ fixed in the said
side plates r. The said levers or cheeks are pivotted at o' to a hood 8 which
extends horizontally over the boiler-space d and vertically downward outside each
of the side plates r.
The hood 8, instead of being provided with guides at the back of the range, like
the sliding plates described in the said former specification, is guided by means of
studs or projections on the side plates r, which studs or projections fit into
slots 8 in the sides of the hood 8, and also by means of projections 8³ on the hood s
which fit into grooves or recesses in the side plates r.
In the modification of my invention shown in Figures 8 to 10, the levers or 4
cheeks o are coupled to links or bars & pivotted at t to the side plates r, so that,
when the cover u is pushed back, the levers or cheeks o are turned upon their
pivots and are raised together with the hoods by the links t until the parts occupy
the positions shown in Figure 10. Other suitable means may, if desired, be
provided for connecting the links or barst with the fire-cover u in such a manner 5
that the said cover will be raised in its backward movement and lowered in its
forward movement, for the purposes explained in the said former specification.
According to another modification of my invention, I substitute, for the levers
or cheeks pivotted to the hood 8, a single lever which is coupled to the fire-cover
and is pivotted to the hot-plate a³ or to the side plates r. In Figures 11 to 13, o¹ 5
is the said lever which is pivotted at o³ to the side plates r and is hinged or coupled
at o' to the cover u. This lever has two arms of whereby the hood 8 will be raised

page_text: in the backward movement of the said cover. The ends of the pivots o³ enter the
grooves or recesses &³ in the hoods and assist in guiding the said hood when moved
up or down.
The fire-cover u, when moved backward and forward to open and close the fire-
chamber, will be raised and lowered by means of the lever o*.
This arrangement can be adapted for ranges wherein two plates are connected
by hinged joints with the hot-plate or with the side plates r to serve in place of
the hood 8, the lever o' and the said hinged plates being so constructed and
combined that these plates will be raised by the act of pushing back the fire-cover,
and will be lowered by the pulling forward of the said cover.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
First The combination of the vertically sliding plates and the operating lever,
substantially as above described, whereby I provide for controlling the passage of
the products of combustion around the oven, for the purpose specified.
Second-The employment, beneath the fire-space, of a drawer or removable
chamber or casing so constructed that air will circulate through the same and will
pass therefrom in a heated state into the flue or flues, as, and for the purpose,
above specified.
Third-The combination of the levers or cheeks provided with the curved
extensions, and the rollers fitted to rotate upon pins or studs fixed in the side
plates r, substantially as, and for the purpose, set forth.
Fourth-The links or bars pivotted to the side plates r, and connected with the
fire-cover, substantially as described with reference to Figures 8 to 10 of the
drawings, whereby I provide for the raising of the said cover in its backward
movement and the lowering thereof in its forward movement, as above specified.
Fifth-The combination, with the fire-cover, of a lever coupled to the said cover
and pivotted to the hot-plate or to the side-plates r, so that the said cover will be
raised in its backward movement and lowered in its forward movement, as above
specified.
Sixth The improved cooking-range consisting of the parts constructed and
combined substantially as described with reference to either of the forms or
modifications shown in the accompanying drawings.