IMPROVEMENTS IN APPA- RATUS FOR LIGHTING AND HEATING
Year: 1866

page_text: PROVISIONAL SPECIFICATION left by Clinton Edgcumbe Brooman at
the Office of the Commissioners of Patents, with his Petition, on the
25th October 1866.-A communication from abroad by Jean Baptiste
Marie Amédée Bourrieff, of Paris, France.
I, CLINTON EDGCUMBE BROOMAN, of the Firm of Robertson, Brooman, and
Company, of 166, Fleet Street, in the City of London, Patent Agents, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN APPA-
RATUS FOR LIGHTING AND HEATING," to be as follows:-
The object of this Invention is to construct smoke-preventing apparatus for
lighting and. heating by gas or oils, and the Invention mainly consists in the
arrangement, as hereafter described, of the following parts, viz., the feed tube
for the gas or oil to be burnt, the draught or exit tube for the products of
combustion and heated air, which are utilized for heating, and special,
appliances either for the purpose of reflecting the light or for transmitting
it and directing its effects as required.
I proceed to describe an arrangement of apparatus suitable for theatres, to
be placed, say, before a box. It has externally the form of a lantern with
six faces terminated at the top by a hexagonal pyramid, and at the bottom by
a similar pyramid but inverted; these parts form a lamp. On the upper
pyramid a draught pipe is connected for carrying off the hot air and products
of combustion, and leading them to places required to be heated; the products.
of combustion are thus drawn of from the lamp before they can issue into the
room or building where they would injure the decorations, paintings, and other

page_text: a horizontal reflector
contents. The middle portion or lantern is covered by
and contains the flame; its sides are composed of prisms of crystal or other
suitable material, which increase the brilliancy of the light and direct it
round in perfectly clear and equal rays. When the apparatus is in the form
of a globe the prisms will be replaced by parts of a globe. In the lower
pyramid is the gas holder or box, which may be supported by a knob or button
at the bottom of the apparatus; when oil is used instead of gas the lower
pyramid contains the oil reservoir; the burner rises vertically from the lower
pyramid to the lantern or central portion. The gas is conducted to the lamp
by a tube running along the draught pipe, and lodged in a groove therein; it
enters the lamp, and after following the contour of the lamp terminates in the
gas box. There is a curved reflector at one side of the burner extending
about half round it for reflecting all the light into the body of the theatre.
One face of each part of the lamp forms a door, and when open allows of
lighting or of cleaning the lamp, and admits air to facilitate the combustion and
increase the draught and consequently the heat, especially in winter. In
theatres and similar buildings the draught tube which carries off the heated
air and products of combustion is bent into a horizontal position, and may be
concealed or disguised by ornamenting or otherwise; it terminates in a pipe
which is lead round the "circle" or galleries of the theatre for warming the
feet of the spectators; this pipe is enclosed in a box, through which fresh
air may be made to circulate by fans or otherwise in summer for the purpose of
neutralizing the heat.
In another arrangement of apparatus the gas tube is led down inside the draught
pipe, and there are two or more burners separated by reflectors which reflect the
vary in
light before and behind. The reflectors employed in these apparatus will
form according to the direction to be given to the light, they may be of glass
or metal, and when of metal I leave suitable spaces for the circulation of air.
The prisms are cut with flat sides, and are placed vertically or horizontally,
and fitted according to the quantity of warm air required. The arrangements
before described will be varied according to the situations or places in which
the apparatus are to be employed.