Improvements in Gas Heating and Cooking Apparatus.
Year: 1895

page_text: Date of Application, 21st June, 1895
Complete Specification Left, 25th Feb., 1896-Accepted, 4th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Gas Heating and Cooking Apparatus.
I, LOUIS DENAYROUZE of 70 Boulevard Victor-Hugo, Neuilly (Seine) France,
Engineer, do hereby declare the nature of this invention to be as follows:-
When a mixture of gas and air is burned, the heating effect is greater when
there is a thorough mixture of a large portion of the air with the gas.
My invention relates to the construction of gas heating and cooking apparatus
so arranged that thorough mixture of gas and air is effected before the mixed
gases reach the jets or flame orifices where they meet the additional air necessary
for combustion. For this purpose, I employ a fan or revolving agitator through
which the gas with an adjusted supply of air is made to pass, becoming thoroughly
mixed on their way to the burners. This fan or agitator may be driven in any
convenient way, as for instance by an electric motor or by clockwork which is from
time to time wound up by hand or by the action of an electro-magnet, or in cases
where there is a chimney or flue there may be arranged a jack which is caused to
revolve, by the ascending products of combustion and is connected to the revolving
mixer by bands or other gear.
Dated this 21st day of June 1895.
ABEL & IMRAY,
Agents for the Applicant.
I, LOUIS DENAYROUZE, of 70 Boulevard Victor-Hugo, Neuilly (Seine) France,
Engineer, 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 :-
When a mixture of gas and air is burned, the heating effect is greater when
there is a thorough mixture of a large portion of the air with the gas.
My invention relates to the construction of gas heating and cooking apparatus
so arranged that thorough mixture of gas and air is effected before the mixed
gases reach the jets or flame orifices where they meet the additional air necessary
for combustion.
For this purpose, 1 employ a fan or revolving agitator through which the gas
with an adjusted supply of air is made to pass, both becoming thoroughly mixed
on their way to the burners. This fan or agitator may be driven in any convenient
way, as for instance by an electric motor or by clockwork which is from time to
time wound up by hand or by the action of an electromagnet, or, in cases where
there is a chimney or flue, there may be arranged a jack which is caused to
revolve by the ascending products of combustion and is connected to the revolving
mixer by bands or other gear.
Apparatus operating as above set forth may be arranged in various ways; as an
example I shew on the accompanying drawings a gas cooking stove, Fig. 1 being
a side elevation partly in section, Fig. 2 a plan, Fig. 3 an elevation with the cover

page_text: of the mixer removed. To the union a of the stove F is attached the case V of
the mixing fan, to which gas is supplied by a pipe attached at b, in quantity
regulated by a stop cock. The mixing fan is driven by a spring wound up at
intervals by the movement of the armature of an electromagnet E as described in
my Specification No. 14053 of 1895.
P is a voltaic battery from which currents excite the electromagnet E at the
required intervals. The mixed air and gas pass into a pipe c and out at a slit
over which is fixed wire gauze d as shewn in section in Fig. 4.
Fig. 5 shews clockwork V for driving the mixing fan, this being from time to
time wound up by hand.
As shewn in Fig. 6, the draught of a chimney G through which the products of
combustion ascend, may be utilised to work the fan or to wind up the clockwork.
The chimney has deflectors at e and e' which direct the hot gases across a wheel h
baving inclined blades causing it to revolve, and a pulley on its axis k drives by
a band suitable gear for working the fan.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:―
In combination with gas heating or cooking apparatus a fan and means of driving
it so as to mix thoroughly the gas and a suitable proportion of air to supply the
burners, substantially as described.
Dated this 25th day of Fahruary 1906
ABEL & IMRAY,
Agents for the Applicant.