IM- PROVEMENTS IN COOKING RANGES AND OTHER FIRE-PLACES
Year: 1858

page_text: LICE 10
(This Invention received Provisional Protection, vu
application for Letters Patent was not given within the time prescribed
by the Act.)
PROVISIONAL SPECIFICATION left by John Charley Riddel, David
Ritchie, Andrew Watson, and John Fleming Allan at the Office of
the Commissioners of Patents, with their Petition, on the 26th May
1858.
We, JOHN CHARLEY RIDDEL, Ironmonger of Belfast, in the County of
Antrim, Ireland, and DAVID RITCHIE and ANDREW. WATSON, Ironfounders, and
JOHN FLEMING ALLAN, Pattern Maker, of Glasgow, in the County of Lanark,
North Britain, do hereby declare the nature of the said Invention of "IM-
PROVEMENTS IN COOKING RANGES AND OTHER FIRE-PLACES," to be as follows, that
is to say:
This Invention relates to improvements in cooking ranges and other fire-
places, and has for object increased efficiency, improved combustion or pre-
vention of smoke and other advantages. In a modification of cooking range
embodying certain of the improvements, the smoke or gases from the fire pass
into a flue space formed upon the top of the oven, which is at one side of the
grate, and thence to the chimney by a passage at the back of this flue space,
being prevented from taking a direct course to this passage by a diaphragm
extending partly in front of it. Provision is made for mixing with the smoke
or gases in the flue space over the oven a current of heated air; this air
current being conveyed through a tortuous passage behind the side and back

page_text: of the fire grate, thence below and up one side of the oven, and entering the
flue space in a direction more or less opposed to the motion of the smoke or
gases from the fire. In the passages through which the air passes deflectors
may be arranged to insure its being thoroughly heated by coming in contact
with the sides of the passages heated by the fire, and a damper or valve may
be fitted to the air passage at any convenient part to regulate or cut off the
air current. It is preferred to construct the cooking range to which the above
description refers, so as to be complete in itself, or so as to require no "setting"
or building up into its place. All kinds of domestic fire-places or grates
may be provided with air passages for heating air and introducing the air so
heated into the smoke flues in a manner similar to that herein-before described,
the passages being arranged as may be found most suitable in each case.
According to another portion of the Invention the oven of a cooking range
or beating apparatus is made of fire-clay with the view of obtaining a more
equable and uniform action of the heat within it. This oven may be mounted
upon or in the cast-iron casing of the range, or in the brickwork against or in
which the grate is placed.
According to another portion of the Invention the oven of a cooking range
with an open fire grate is heated by means of a flue communicating with the
fire grate at the lower part of one of its sides, and drawing off thence a portion
of the fire gases which are conducted round the oven, the remainder of the
fire gases passing up from the top of the grate, as is usual with open fires.
In adopting this construction, the horizontal or bottom piece of the fire grate is
by preference continued into the space forming the commencement of the flue
for heating the oven, with the view of improving the combustion of that part
by admitting air from below, as at other parts of the bottom of the grate.