Year: 1898

page_text: Date of Application (in United Kingdom), 11th July, 1898
Complete Specification Left, 15th Mar., 1899-Accepted, 22nd Apr., 1899
I, ELOI DELMOULY, of 256, Boulevard Voltaire, Paris, Republic of France,
Engineer, do hereby declare the nature of this invention to be as follows:
This invention relates to acetylene gas generators in which the water is fed
to the carbide by a self regulating device. The generator may be made in
various forms without departing from the principle of my invention.
In one form the generator is constructed as follows:-
-
A water reservoir of cylindrical or other preferred shape is disposed above a
carbide chamber. The water reservoir is provided centrally with a water supply
tube, the lower end of which is closed and fitted with a conical end to engage the
upper end of an inner wick tube attached to and depending from the bottom of
the water reservoir. The water supply tube is pierced with a
number
of holes near its lower end to allow the water to enter the receiver.
The upper end of the water supply tube which is stopped by a cork or other device
is screwed in the top of the reservoir so that its position is adjustable to regulate
the passage of water to the carbide: by raising or lowering the conical point.
The water reservoir is attached to the upper end of a carbide receiver by a screw
joint or other device.
The lower end of the carbide receiver is fitted with a centrally located socket
which receives the lower end of an outer tube which extends upwards nearly to
the top of the receiver and is left with an open end. This tube is pierced with
a number of orifices, and surrounded by some capillary substance.
Inside this outer wick tube is arranged the inner wick tnbe which depends
from the water reservoir and is small enough to leave an annular space between
the two tubes; and inside the inner tube is placed a capillary wick or it may be small
enough to be in itself a capillary tube, its lower end being open and not quite
so long as the outer tube. The carbide receiver is filled with crushed carbide
mixed with any suitable capillary substance and the water supply tube being
raised sufficiently for the passage of the water down the wick tube, the water
rises in the annular space between the outer and inner wick tubes, until it reaches
the orifices in the outer, saturates the outer capillary covering and thus reaches
the carbide, thereby generating the gas. The generated gas escapes through an

page_text: outlet formed in the side of the carbide receiver. To prevent moisture or lime
choking the outlet, same is provided with and protected by a shield.
A burner
and fight reflector may be fitted to the outlet and the gas consumed at once.
Should the gas be generated faster than it is consumed, the gas pressure will
prevent the water rising in the annular space between the inner and outer wick
tubes.
In a modified form of this invention the carbide receiver is arranged in the
water reservoir, so that the water surrounds it.
The bottom of the water reservoir is furnished with a conical point which
engages the open lower end of a wick tube pierced with holes towards its upper
end and surrounded by some suitable capillary substance. The wick tube is
closed at its upper end and an outlet tube in the top of the carbide receiver
leads off the gas to be consumed where required. The carbide receiver is sus-
pended in the water reservoir by means of a screwed joint, and by turning same,
the admission of water may be regulated since it will either raise or lower
the mouth of the wick tube in the carbide receiver, off, or on to, the conical point
in the bottom of the water reservoir. When the gas pressure becomes too high,
the flow of water up the wick tube will be stopped until the pressure is sufficiently
lowered.
In a further modification the carbide holder is supported in a bell or inverted
cup which is placed in the water reservoir. The water enters the bell and rises
to a certain height, the water saturating the carbide by a central tube in the
receiver pierced with holes and surrounded by some capillary substance.
The top of the receiver is open to the upper part of the bell and the gas
generated passes into a central tube provided with holes which form outlets for
the gas. This tube extends down through the tube of the carbide receiver and
upholds same by a cross pin.
When the pressure of gas becomes too high, the water is prevented from rising
in the tube of the carbide receiver.
Dated this Eleventh day of July 1898.
S. S. BROMHEAD,
Agent for the Applicant,
171, Queen Victoria Street, London, E.C.
renerating Acetylene Gas.
I, ELOI DELMOULY, of 256, Boulevard Voltaire, Paris, Republic of 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:.
-
This invention relates to acetylene gas generators in which the water is fed
to the carbide by a self regulating device. The generator may be made in
various forms without departing from the principle of my invention.
I will now describe my improved generator with reference to the accompanying
drawings in which :-
Fig. 1 shows a sectional elevation of one form of a lamp constructed on my
principle with burner at side,
Fig. 2 shows a section of a modified form of lamp with burner on top.
Fig. 3 shows a generator in which the carbide holder is immersed in or sur-
rounded by water."
In all these cases the water is supplied automatically to the carbide through

page_text: concentric tubes fitted with felt or wick, and the supply is checked by the increased
pressure of the gas as formed.
The lamp shown in Fig. 1 is composed of a reservoir A of cylindrical or other
suitable shape and the bottom 13 of said reservoir is fitted with a long tube C,
open at both ends. This tube is stuffed with a wick made of felt or any other
capillary material. This wick can be dispensed with by making the tube
capillary.
On to the top part of said reservoir is screwed a vertical tube D the lower part
of which, is shut and fitted with a small cone E which is made to fit into and
form a stopper to the tube C.
Said tube D is furnished with holes d which allow the water poured into D
to enter the reservoir A. The tube D is then shut by means of stopper F or any
suitable cork.
A hole e is made at the upper part of the reservoir A to permit the air to
enter. The tube C is then placed inside another tube H the bottom of which is
shut and absolutely watertight, said tube being pierced with small holes a on
a portion of its middle part.
The tube H is then surrounded with capillary substances, or better still clothed
with a cotton or other capillary wick and to ensure the firmness of said tube, its
end engages with a cylindrical groove or recess I made on the bottom of the
carbide receiver J, on to which is fixed the water reservoir A. This reservoir
is fixed on to the carbide receiver by means of a screw or other joint.
I will now describe the working of my apparatus.
The reservoir A being unscrewed from the carbide receiver, the hollow rod is
screwed home in such a way that its point or conical end, entirely shuts the orifice
of the tube C.
The water reservoir A is then filled by pouring water into the hollow rod D.
The tube H is then fixed into the groove or recess I and the receiver J is filled
with crushed carbide, same being mixed with capillary matters, such as felt
silk or yarn, waste blotting paper or the like, in order to distribute the moisture
more evenly in the mass of carbide. The tube C is then pushed in to the tube H
and the reservoir A is screwed on to the carbide receiver J. The hollow rod D.
is then unscrewed to allow the water to penetrate to the carbide by the tube C.
The water descends through the wick in the tube C, said wick serving to
moderate the flow of water and reaches the bottom of the tube H. It then ascends
in the annular space between the two tubes C and H, passes out through the holes a
and soaks the wick L which surrounds the tube H, said wick then uniformly
distributes the moisture.
The gas generates in the upper part of the mass of carbide and goes out through
the orifice M in front of which is a shield N, placed to prevent water or lime
from being forced through by the gas. On to the orifice M is fitted a consumer
with reflector R.
If the gas happened to be generated too abundantly, the pressure would become
stronger in the lamp, and said pressure would prevent the water from coming
between the two tubes C, H, and up to the holes a. The wick L would thus
receive no more moisture until the pressure has again become normal in the lamp.
In this way the water flowing_regularly, it would be possible if desired to dispense
with the wick L. However I prefer to provide my apparatus with the wick in
order to equally distribute the moisture in the carbide and prevent the holes a
from being stopped by lime.
The chief characteristics of my lamp are (1,). The contact of the water with
the carbide by the intermediary of a capillary wick and (2,) the flow of water in
suitable quantity, according to the production of gas, through the annular space
comprised between the two tubes C and H.
principle of my
These two principal points which serve as the basis of the
lamp may be applied in various manners as for instance in Figs. 2 and 3:-
In Fig. 2, a carbide receiver B is introduced into a resevoir A.
Said receiver B

page_text: is furnished at its middle with a tube C in which is a capillary wick. Another
capillary wick L surrounds the tube C which is pierced at about its middle with
holes a.
The receiver B being screwed into A it may be placed higher or lower,
in such a way that the cone D which is fitted onto the bottom of the reservoir should
more or less close the tube C.
It is thus evident that if the pressure of gas becomes too strong, the level of
water in the tube C will be depressed and said water will return to the water tank
or reservoir.
Fig. 3 shows an automatic generator fitted with a water tank A inside which
is placed a cone B containing the water tight carbide holder D. A tube C fixed
to the upper part of the cone B passes through the tube H. This tube H being
fixed to the bottom of the carbide holder which is supported by means of a
pin f.
Said tube H also serves as exhauster for the gas, by its being pierced with
holes c.
The tube H is surrounded by a capillary wick. The water comes
between the two tubes C H, and soaks the wick surrounding the tube H through
the holes a.
If the gas pressure becomes too strong the water descends in the space between
the tubes C, H, and returns to the tanks whence it will only issue again to the
wick L when a normal pressure is again established.
Having now panticularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. An acetylene lamp in which the water reaches the carbide through two
concentric tubes C and H and the annular space between these tubes, said tubes
being provided with wicks or felt covers so as to cause the water to return to the
tank when pressure is too strong and only again to flow on to the carbide when
the pressure has become normal. This object can be attained by modifications.
of the arrangement indicated as shown in Figs. 2 and 3, as herein described, and
set forth.
2. In a lamp as specified in Claim 1 the combination of a tube pierced with
holes for conducting the water with a capillary wick or felt lining for the purpose
of equally distributing the water in the carbide, as herein described and set forth.
Dated this 15th day of March 1899
S. S. BROMHEAD,
Patent Agent,
171, Queen Victoria Street, London, E.C.,