Improvements in Carburetting Air and Gases.
Year: 1895

page_text: his Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883), as required by
the decision of the Comptroller-General of the 2nd day of July 1896.
Improvements in Carburetting Air and Gases.
I, LOUIS MICHEL BULLIER, of 12, Avenue d'Orléans, Paris, France, Chemist,
do hereby declare the nature of this invention to be as follows:-
It is known that certain gases are incapable of being utilized in practice for
lighting purposes, owing to their lack of, or inferiority in, illuminating properties,
and my invention has for its object to impart this property to air and gases, by
mixing acetylene therewith. It has long been sought to utilize water-gas for
lighting purposes by saturating it in a heated state with schist oils, but this gas
not only possesses the disadvantage of being very rich in carbonic oxide, which is
inodorous and therefore difficult to detect in the event of an escape, but does not
travel well, since it loses its illuminating power when conveyed to a distance from
the source of supply, owing to the condensation of the carburets or hydro-carburets
in the pipes. 1 employ acetylene for imparting to gases the illuminating property
in which they are deficient, or for increasing that which they possess, and by this
means I am enabled to obviate the various objections before mentioned.
Acetylene gas possesses a disagreeable odour which can be easily detected, it is
inflammable and burns with an intensely luminous smoky flame, does not become
liquefied by cold, and can only be brought to the liquid state under a pressure of
nearly 76 atmospheres.
My invention is entirely independent of the mode of preparation of the
acetylene, but, in order to reduce the cost price, it is preferred to obtain it from
the carbides of alkali-earth metals. Thus, for example, acetylene may be obtained
by the simple action of water from calcium carbide as well as from carbides of
other alkali earths. The employment of gases with which acetylene has been
mixed, according to my invention are very numerous. Acetylene gas may,
concurrently with coal gas, serve for lighting streets and houses, but as it may be
compressed without losing its illuminating power it is more especially suited for the
portable lighting of railway carriages, road vehicles, marine buoys, and in other
cases in which ordinary lighting gas is inapplicable.
I would observe that, although I have mentioned the application of acetylene to
water-gas by way of example, it should be understood that the invention is
applicable to air and non-illuminating gases of every description, as well as for
increasing the illuminating power of ordinary lighting gases.
Dated this 28th day of January 1895.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.

page_text: COMPLETE SPECIFICATION (AMENDED).
Improvements in Carburetting Gases.
I, LOUIS MICHEL BULLIER, of 12, Avenue d'Orleans, Paris, France, Chemist,
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:-
--
It is known that certain gases are incapable of being utilized in practice for
lighting purposes, owing to absence or insufficiency of illuminating power, and
my invention has for its object to impart this property to gases by mixing acetylene
therewith. It has long been sought to utilize water-gas for lighting purposes by
saturating it in a heated state with schist oils, but this gas has the disadvantage of
being very rich in carbonic oxide, which being inodorous is difficult to detect in
the event of an escape, and does not travel well, since it loses its illuminating power
when conveyed to a distance from the source of supply, owing to the condensation
of the carburets or hydro-carburets in the pipes.
According to my invention, I employ acetylene for imparting to gases the
illuminating property in which they are deficient, or for increasing that which
they possess, and by this means I am enabled to obviate the various objections
before mentioned. Acetylene gas possesses a disagreeable odour which can be
easily detected, it is inflammable and burns with a very luminous smoky flame,
does not become liquefied by cold, and can only be brought to the liquid state
under a pressure of nearly 76 atmospheres.
My invention is entirely independent of the mode of preparation of the
acetylene, but, in order to reduce the cost price, it is preferred to obtain it from
the carbides of alkali-earth metals. Thus, for example, acetylene may be obtained
by the simple action of water, from calcium carbide as well as from carbides of
other alkali earths.
The employment of gases with which acetylene has been mixed, according to my
invention, are very numerous. Acetylene gas may, concurrently with coal gas,
serve for lighting streets and houses, but as it may be compressed without losing
its illuminating power it is more especially suited for the portable lighting of railway
carriages, road vehicles, marine buoys, and in other cases in which ordinary lighting
gas is inapplicable.
I would observe that, although I have mentioned the application of acetylene to
water-gas by way of example, it should be understood that the invention is applicable
for carburetting non-illuminating gases of every description, as well as for increasing
the illuminating power of ordinary lighting gases.
The proportion of acetylene gas to be mixed with the other gases would vary
according to their illuminating power and the luminous intensity it is desired to
obtain. Paris lighting gas, for example, possesses an illuminating power of
1 carcel (about 9 candles) per 145 litres burnt in a batswing burner and this
illuminating power is raised to 2 carcels by the addition of 7 litres of
acetylene gas.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I am aware that it has
been proposed to carburet air by mixing it with acetylene, I therefore make no
claim for mixing acetylene with air but I declare that what I claim is :-
The admixture of acetylene with gases generally, for imparting or increasing
illuminating power, substantially as specified.
DL: ach 1
1805
of October 1805.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.