IMPROVEMENTS IN KITCHENERS OR COOKING RANGES AND COOKING GRATES AND IN VENTILATING KITCHENS CONTAINING KITCHENERS OR COOKING RANGES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by James Watts Brown at the Office
of the Commissioners of Patents on the 28th January 1882..
JAMES WATTS BROWN of Leamington in the County of Warwick Gentleman.
"IMPROVEMENTS IN KITCHENERS OR COOKING RANGES AND COOKING GRATES AND
IN VENTILATING KITCHENS CONTAINING KITCHENERS OR COOKING RANGES."
My Invention consists, first, of the following improvements in ventilating the
ovens of kitcheners or cooking ranges and cooking grates; whereby a current of
fresh and warm air is made to circulate through the said ovens and is conducted
therefrom and discharged at a high level into the vertical smoke flue.
By the use of this part of my Invention, the oven is kept perfectly dry and the
condensation of vapours on the joints or food cooking is prevented.
In applying this part of my Invention to a kitchener or cooking range I attach
to the inside of the oven door and near the bottom edge thereof, an inlet ventilator
consisting of a metal box divided by longitudinal bars so as to form in the interior
of the said box a tortuous channel. By means of perforations, conical by preference,
in the oven door, cold air passes into the lower division of the divided box, and
the upper part of the divided box opens into the interior of the oven by perforations
in the back of the box. As the said box is heated by the oven, the air traversing
its channels becomes heated before it enters the oven. The heated air passes from
the oven through a small chamber or valve box at the crown of the oven, the said
valve box being in communication with a tube connected with the coving plate at
the back of the oven, the said tube opening by lateral passages into the vertical
smoke flue of the kitchener. By means of a valve in the valve box at the crown
of the oven, worked by a rod from the front of the oven, the amount of air
circulating through the oven may be regulated.
Instead of admitting the cold air to the inlet ventilator or air heating box of the
oven, by perforations in the oven door, the front of the air heating box may be
furnished with a sliding door, by opening which more or less the required quantity
of air may be admitted to the oven. In this case a series of cross bars is arranged
in the box for increasing its heating surface. This arrangement of my Invention
is especially applicable to the ovens of cooking grates.
In ventilating a kitchen according to my Invention containing a kitchener or
cooking range, I conduct the steam and vapours arising from cooking on the hot

page_text: plate of the kitchener direct into the chimney in the following way. The frame
of the register valve which I employ, is closed on three sides but in that side of the
said frame which is situated near the chimney breast, a longitudinal slot is mado
and between the slotted side of the frame and the inner side of the chimney breast
a space is left. The free end of the register valve is furnished with an inclined lip
which overhangs the longitudinal slot described in the frame. The steam and
vapours arising from the cooking on the hot plate, escape through the slot in the
frame of the register valve into the space between it and the chimney breast and
from thence pass into the chimney.
The register valve may have any desired shape.
In order to remove the heated vitiated air from the upper part of the kitchen,
I arrange a ventilator in the chimney breast, the said ventilator opening into the
main flue. At the mouth of the ventilator in the chimney breast, a valve is
placed, the said valve being so centred or hung that when at liberty to move, it
closes air tight the said ventilator. The valve has an arm at front to the eye part
of which a cord or chain is fixed and descends to the middle of the mantel piece.
By pulling down this cord or chain, the valve is raised and the vitiated air may
escape through the ventilator, the valve being maintained in its raised position by
engaging a ring, at the bottom of the cord or chain upon a pin or stud on the
mantel piece. Or where it is wished to operate the valve from the side of the
kitchener, the cord is conducted to the desired place by means of pulleys.