Improvements in Cooking Ranges.
Year: 1891

page_text: Jate of Application, 21st Apr., 1891
Complete Specification Left. 16th Jan., 1892-Accepted. 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Cooking Ranges.
I, JOHN MCINTYRE SHAW, of 14, Union Street, Glasgow, in the County of
Lanark, North Britain, Ironmonger, do hereby declare the nature of this invention
to be as follows, that is to say :-
My said invention has for its object to apply to cooking ranges of various classes
improved constructive details by means of which the heating of an oven can be
conveniently controlled and economically effected.
In carrying out my invention I employ a vertically adjustable grate, and in one
nodification I arrange so that when it is in its lowest position the fire gases or a
sufficient portion of them may pass from the side immediately under the oven in a
flue provided for the purpose and which is continued up at the outer side or back
of the oven.
The flue may extend from the outer side more or less over the top
of the oven but I prefer it to communicate with an uptake flue at the back lateral
corner; whilst a flue space with a regulating damper may be provided for the
passage of a portion of the fire gases from the upper part of the fire over the oven
to the same uptake flue.
According to another modification with an oven of sufficient depth, I arrange a
flue from the side of the fire across the interior of the oven and communicating with
an upward flue at the outer side. With this arrangement the oven will comprise
upper and lower spaces, and the crossing flue will supply heat both upwards and
downwards.
Dated this Twentieth day of April 1891.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Cooking Ranges.
I, JOHN MINTYRE SHAW, of 14 Union Street, Glasgow, in the County of
Lanark, North Britain, Ironmonger, 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, that is to say :-
oven can be
My said invention has for its object to apply to cooking ranges of various classes,
improved constructive details by means of which the heating of an
conveniently controlled and economically effected.
I employ a vertically adjustable grate, and in one modification I arrange so that
when it is in its lowest position the fire gases or a sufficient portion of them may
pass from the side immediately under the oven or in a flue provided for the purpose
across the bottom of the oven and which is continued up at the outer side of the
oven. The flue may extend from the outer side more or less over the top of the
oven, but I prefer it to communicate with an uptake flue near the back lateral
corner; whilst a flue space with a regulating damper may be provided for the
passage of a portion of the fire gases from the upper part of the fire over the oven
to the same uptake flue.
According to another modification with an oven of sufficient depth I arrange a
flue from the side of the fire across the interior of the oven and communicating with
an upward flue at the outer side.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings

page_text: to be hereinafter referred to and showing two examples of my improved cooking
ranges.
Figures, 1, and 2, on the drawings are, respectively, a sectional front elevation
and a transverse vertical section of a cooking range as made with one modification
of my improvements; and
Figure, 3, is a sectional front elevation of a second modification.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In carrying out my invention I may employ any suitable known form of vertical
adjustable grate but that shown in the drawings is one of the modifications described
in my Patent Specification No. 7827 of 1886 and in the modification shown in
Figures 1, and 2. I arrange so that when the adjustable grate, G, is in its lowest
position the fire gases or a sufficient portion of them pass from the side of the fire
immediately across the bottom of the oven in a flue, F, provided for the purpose
and which communicates with an upward flue, B, at the outer side of the oven, A.
This flue, B, leads to an uptake flue, (, on the top of the range shown as near the
back lateral corner, but which may be placed further from the corner if wished;
whilst a flue space, D, with a regulating damper, E, is provided for the passage of
a portion of the fire gases from the upper part of the fire over the oven, A, to
the same uptake flue, C. When the adjustable grate, G, is at its highest
position as shown by dotted lines in Figures 1, and 2, the flue, F, is closed to
the passage of the fire gases but the oven, A, can even in this case be kept
moderately hot by allowing the fire gases to pass through the flue space, D.
In the modification shown in Figure, 3, I arrange a flue, H, across the interior
of the oven, A, and communicating with the upward flue, B, at the outer side of
the oven.
With this arrangement the oven, A, will comprise upper and lower
spaces, and the crossing fluc, H, will supply heat both upwards and downwards.
The fire gases are, in this modification, able to pass through the flue, H, even
when the grate, G, is not in its lowest position.
Instead of the fire gases passing upwards from the outer end of the crossing
flue, H, the parts may be constructed or arranged so that the fire gases may pass
downwards and under the oven; and the passage of the fire gases through the
crossing flue, H, may be controlled by means of a damper.
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 :-
1. In cooking ranges the construction of a flue immediately under or across the
bottom of the oven and continued up at the outer side of the oven together with or
without a flue space leading from the upper part of the fire space over the oven
substantially as and for the purposes hereinbefore described.
2. In cooking ranges the construction of a flue from the side of the fire across
the interior of the oven substantially in the manner and for the purposes hercin-
before described.
Dated this Fifteenth day of January 1892.
EDMUND HUNT,
Applicant's Agent.