IMPROVEMENTS IN PETROLEUM OR HYDROCARBON COOKING AND HEATING STOVES AND LANTERNS
Year: 1877

page_text: LETTERS PATENT to David Pitcairn Wright and William Randle, both of
Birmingham, in the County of Warwick, for the Invention of "IMPROVEMENTS
IN PETROLEUM OR HYDROCARBON COOKING AND HEATING STOVES AND
LANTERNS,"
Sealed the 1st February 1878, and dated the 1st November 1877.
PROVISIONAL SPECIFICATION left by the said David Pitcairn Wright and
William Randle at the Office of the Commissioners of Patents on the 1st
November 1877.
DAVID PITCAIRN WRIGHT and WILLIAM RANDLE, both of Birmingham, in the
County of Warwick. "IMPROVEMENTS IN PETROLEUM OR HYDROCARBON COOKING
AND HEATING STOVES AND LANTERNS."
This Invention relates to improvements in petroleum stoves for heating and
cooking purposes, and is also applicable for lanterns. It consists mainly in the
method by which the oil vessel and burner is brought into easy and yet sufficiently
close connection with the cylinder or upper part, so as to produce proper com-
bustion.
We prefer to construct the body of stove or lantern square, and surmount it with
a round cylinder; but it may be entirely square, round, octagon, or any desired form.
About five or six inches from the bottom we fix a metal plate, dividing the stove
into two compartments, and in which plate is a suitable aperture for the flame or
flames from the burners; this plate has in some cases an inner frame of iron or
chimney surrounding the aperture for the flame or flames, and standing up from
three to five inches above it. The oil vessel has the burner and the cone attached
to the oil vessel with a hinge, so that it can readily be thrown back for trimming,
&c.

page_text: We attach to the cone, and surrounding it on all sides, a short chimney of any
suitable material standing up just above the cone to such a height as will when
slid into its place just touch or very nearly so the under side of the plate which
divides the cylinder, as before described, and thus almost entirely excludes all
draught into the cylinder, except that which passes through the openings in the
cone or cones. In order more effectually to do this we sometimes put also a frame
on the under side of the plate, so that when the oil container with burner and cone
is slid into its place this frame closely surrounds the short chimney attached to the
cone on every side, except that on which it enters. We obtain the same result by
attaching to the under side of the division plate a frame of the exact depth to bear
upon the top of the cone plate, or of the exact width to closely encase the sides of
the cone plate on its three sides when it is slidden into its place, and having the
side or end at which the cone enters, this frame being on a hinge with, if desired, a
counterweight, so that it is self-closing directly the oil vessel is in its proper place,
and thus causing all or nearly all the air which enters the cylinder to pass through
the opening in the cone or cones.
Or I adopt another method as follows:-The chimney in the division plate I
make not only to project above it, as described, but also below it, and so suspended
eccentrically on pivots or hinges as that free admission is given to the oil vessel
with burner and cone, and the pushing in of which causes the chimney to adjust
itself sufficiently air-tight upon the cone plate....
Or by another method I make the whole of the division plate to lift up at one end
for the admission of the oil vessel and cone, and when the oil vessel is in its place
to fall with its own weight upon the cone plate, and thus sufficiently close the
ingress of air to. the cylinder otherwise than through the apertures in the cone.
Or by another method we make a rim on the under side of the division plate,
which hangs down a sufficient depth to enclose the cone and the cone plate on three
sides, and on the other side or end we hang a door or flap with a counterbalance
weight and projecting arm so arranged and adjusted so that when the oil vessel
with cone is pushed in it strikes the projecting arm, and closes the door or flap, and
the counterbalance weight keeps it closed.
When the oil vessel with burner and cone is drawn out the door or flap is opened,
and the counterbalance weight is thrown over, and keeps it open. By this arrange-
ment the oil vessel with burner and cone is readily drawn out and pushed in, and
when pushed in the self-acting door or flap sufficiently encloses it as to produce
perfect combustion.
"