Year: 1886

page_text: We, ROBERT HUNTER of Port Downie Iron Works, Falkirk, Stirlingshire, Iron
Founder, and WILLIAM MOFFATT of Bridge Street Gateshead in the County of
Durham, Ironmonger, do hereby declare the nature of this invention to be as
follows:
=
Our invention relates to the class of cooking ranges in which the oven of the
range instead of being exposed to the direct action of the fire is fitted at a higher
level or out of contact with the fire and is heated by the gaseous products of com-
bustion of the fuel which are directed along the bottom of the oven after they have
been partially cooled in traversing a long flue. In such ranges the flue used for
conveying the fire gases to the underside of the oven is usually built up in brick-
work extending from the back of the fire grate round the back of the range to the
lower side of the oven, and the skilled labour of a bricklayer acquainted with the
work of building the flue is required in fitting up the range.
The main object of our invention is to obviate this inconvenience while improving
the construction of the range and providing better access to the flue for cleaning
purposes by forming the flue as part of the range or fitting it in conjunction
therewith.
In one modification we form the flue within the portion of the range under
the oven at one side of the fire grate the flue opening being in the plate at the
side of the fire and being covered or fitted with an open grating so as to admit
heated air but not cinders, and the flue itself being carried along the front of the
range behind the front plate, thence along the end of the range close to the
"jamb" of the fire place, round the back and then forward to a point under
the central part of the oven where it opens into a horizontal flue space extending
across the whole bottom of the oven from which the hot gases ascend on both sides
of the oven meet on the top and escape into the chimney through a hole in the
centre of an arched top plate which is fixed at a suitable height above the oven.
The flue in its circuitous course is formed by walls of cast iron, sheet iron, brick,
fire-clay or other material of which the bottom and cover may also be formed, and
the enclosing walls may in part consist of the front, end and back plates of the
range and a continuous vertical division plate at a distance from these plates equal
to the breadth of the flue. The cover of the flue is by preference formed by a
separate movable plate formed with a vertical tubular outlet reaching up to and in
TD 071

page_text: part supporting a horizontal plate having an orifice in it over the outlet tube of the
flue. Over this outlet a sliding damper may be placed having a rod passing out
to the front for opening and closing the flue more or less and thus regulating the
heat of the oven. Between the horizontal plate and the bottom of the oven is formed
the before-mentioned horizontal flue space wherein the hot gases which pass from
the fire through the circuitous flue thereto, circulate and heat the bottom, both sides
and top of oven before passing off to the chimney. Each part of the flue and of the
range is adapted to fit the adjoining parts, the whole of the oven side being "self-
setting." Two cleaning doors are fitted in the front plate of the range to give
access for cleaning the flue.
Instead of carrying the flue first along the front of the range and then along the
end and back part it may first be carried along the back then along the end and
front and inwards to the vertical outlet which discharges the hot gases to the
horizontal flue space under the oven, but in either case it is preferred to have
the opening to the flue from the fire in the side of the fire-grate rather than in
the back.
For cheapness of construction we may form the flue of a pipe of metal, fire-clay
or other material extending from an orifice in the side of the fire grate in a straight
or more or less circuitous path to a point near the centre of the horizontal plate
forming the bottom of the horizontal flue space under the oven, through an orifice
in which plate the pipe discharges the hot gases from the fire; or in some cases we
may carry such tubular flue from the back of the fire along the back of the range
and thence to the flue space at the under side of the oven.
CRUIKSHANK & FAIRWEATHER,
135, Buchanan Street, Glasgow,
Agents.

page_text: LOCATED.
We, ROBERT HUNTER of Port Downie, Iron Works, Falkirk, Stirlingshire, Iron
Founder, and WILLIAM MOFFATT of Bridge Street, Gateshead, in the County of
Durban 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:-
Our invention relates to the class of cooking ranges in which the oven of the
range instead of being exposed to the direct action of the fire is fitted at a higher
level or out of contact with the fire, and is heated by the gaseous products of com-
bustion of the fuel which are directed along the bottom of the oven after they have
been partially cooled in traversing a long flue. In such ranges which are known
as "Glendinning" or hot air ranges the flue used for conveying the fire gases to
the under side of the oven is usually built up in brick work extending from the
back of the fire grate round the back of the range to the lower side of the oven,
and the skilled labour of a bricklayer acquainted with the work of building the
flue is required in fitting up the range.
The main object of our invention is to obviate this inconvenience while improving
the construction of the range and providing better access to the flue for cleaning
purposes by forming the flue as part of the range or fitting it in conjunction
therewith.
As represented in horizontal section at figure 1, in sectional elevation at figure 2,
and in transverse vertical section at figure 3, and as slightly modified in horizontal
and vertical sections at figures 4 and 5, in sheet 1 of the annexed drawings, we
form the flue A, within the portion of the range under the oven B, at one side of
the fire grate C, the flue opening A¹, being in the plate at the side of the fire, and
the flue itself being carried along the front of the range behind the front plate D,
thence along the end of the range at E, close to the "jamb" of the fire place, round
the back at F, and thence to a point under the central part of the oven G, where
it opens into a horizontal flue space H, extending across the whole bottom of the
oven from which the hot gases ascend through the spaces H', on both sides of the
oven, meet on the top and escape into the chimney through a hole in or near
the centre of an arched top plate I, which is fixed at a suitable height above
the oven.
The flue A, in its circuitous course is formed by walls a of cast iron, sheet iron,
brick, fire-clay or other material of which the bottom and cover may also be
formed, and the enclosing walls may, as shown, in part consist of the front end and
back plates of the range and a continuous vertical division plate a¹ at a distance
from these plates equal to the breadth of the flue. The cover of the flue is by
preference formed by a separate movable plate a' formed with a vertical tubular
outlet a reaching up to and in part supporting a horizontal plate at having an
orifice in it over the outlet tube of the flue. Over this outlet a sliding damper may
be placed having a rod passing out to the front for opening and closing the flue
more or less and thus regulating the heat of the oven or the damper may be fitted

page_text: in the outlet in the arched top plate I. Between the horizontal plate a' and the
bottom of the oven G, is formed the before mentioned flue space H, H', wherein the
hot gases which pass from the fire through the circuitous flue thereto, circulate and
heat the bottom, both sides and top of the oven before passing off to the chimney.
Each part of the flue and of the range is adapted to fit the adjoining parts, the
whole of the oven side of the range being "self-setting." Two cleaning doors
which are not shown in the drawings are fitted in the front plate of the range to
give access for cleaning the flue.
-
Instead of carrying the flue first along the front of the range and then along the
end and back part, it may be carried as in the modification represented by
figures 6, 7 and 8, first along the back, then along the end and front and inwards
to the vertical outlet which discharges the hot gases to the horizontal flue space H,
under the oven G. In either case it is preferred to have the opening to the flue
from the fire in the side of the fire grate rather than in the back, but as indicated
by the diagram figure 9 in sheet 2, the opening A¹, to the flue A, may be formed
at the back of the fire grate.
For cheapness of construction we may form the flue A, as indicated by the
diagram figure 10, of a pipe of metal, fire clay, or other material extending from
an orifice in the side of the fire grate in a straight or more or less circuitous path
to a point near the centre of the horizontal plate forming the bottom of the hori-
zontal flue space under the oven through an orifice in which plate the pipe
discharges the hot gases from the fire; or in some cases we may carry such tubular
flue from the back of the fire along the back of the range and thence to the flue
space at the under side of the oven. Figures 11 and 12, are perspective views and
figures 13 and 14, vertical sections representing several of the many forms in which
the self-setting flue may be made.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is. to be performed, we declare that what
we claim is :-
In a cooking range of the class described, a self-setting flue under the several
modifications of construction hereinbefore described with reference to the annexed
drawings.