Improvements relating to Acetylene Gas Generators.
Year: 1897

page_text: Date of Application (in United Kingdom), 11th Dec., 1897
Complete Specification Left, 11th Dec., 1897-Accepted, 27th Aug., 1898
COMPLETE SPECIFICATION.
Improvements relating to Acetylene Gas Generators.
We, VICTOR MARECHAL, ALBERT MOREAU and LUCIEN GARCIN, all of 61, Rue
des Archives, Paris, in the Republic of France, 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:—
Our invention relates to acetylene gas generators and has for its object to
effect the constant and regular feeding of the water employed for the production
of acetylene gas.
Our invention consists essentially in providing a feeding tube of small calibre
in which a thread or wire is provided by means of which the capilliarity of the
tube is increased, such tube having its lower extremity outwardly flaring, while
the lower extremity of the thread or wire exceeds the length of the containing
tube.
Our invention is designed to obviate the irregularity in working which is
usually attendant upon the use of capilliary feeding tubes of small diameter in
apparatus of this class, which is caused by the deposit of sediment or impurity
contained in the water as well as by the deposit of lime upon the tube by which
its lower orifice rapidly becomes stopped up. Several means have been proposed
more or less complicated but none have to the knowledge of the applicants met
with practical success.
Our invention is illustrated in the accompanying drawing which represents in
sectional elevation a generator upon which the invention is applied.
In carrying our invention into effect the generator is provided in the usual way
with two receivers, respectively for water and calcium carbide, each being of such
a size and shape as may be required for any particular service, while each may
be provided with screwed plug stoppers for the introduction respectively of the
water and calcium carbide and for the purpose of cleansing the carbide receiver,
while a delivery tube, such as I, is provided upon the carbide receiver from which
the gas may be conducted to the burner or to the holder if such is employed.
The water receiver A is provided with a junction-piece H₁ through which the
water is conducted on turning the cock C provided thereupon. The extremity of
this junction-piece H is provided with a screwed thread upon which a coupling
nut J is provided which embraces a flange or shoulder upon the extremity of a
continuation tube D which is fixed to the carbide receiver B, such continuation

page_text: tube 1 being provided at its upper extremity in conical form to correspond with
the conical seat provided in the lower extremity of the junction piece H. A
capilliary tube E is provided within the continuation tube 1) and is fixed at the
upper part thereof, while the capilliary tube E is continued into the interior of
the receiver and terminates in an outwardly flaring flange F. A metallic thread
or wire G is provided within the capilliary tube E and is held therein by being
formed at its upper part as a ring or hook H resting upon the extremity of the
tube E, the opposite extremity of the thread or wire passing out from the tube F
and terminating some little distance below. It will be seen that on the introduction
of the metallic thread or wire G into the tube E the upper extremity of the con-
tinuation tube 1) may be introduced into the lower conical extremity of the
junction-piece H, so that upon the application of the nut J upon the threaded
extremity thereof the tube D is secured to the junction-piece H.
The operation is as follows:-The receivers are charged respectively with water
and carbide, and the cock C is turned to admit water which immediately issues
into the small tube E and forms into drops as indicated in the figure and descends
upon the carbide in the receiver, whereupon gas is immediately generated and the
pressure attained effects the regulation of the admission of water which thereby
is automatically regulated upon the consumption in the burner.
The vapor
carrying lime is condensed upon the interior of the receiver and upon the tube,
but the water passing out along the thread carries the deposited particles of lime
away and so the lime falls with the water upon the carbide instead of accumulating
to obstruct the passage of the water. The projection of the thread or wire from
the mouth of the tube E facilitates the draining of the water, while the thread
or wire may be readily withdrawn from the tube for periodically cleaning the
tube.
The invention may be applicable to all apparatus for generating acetylene gas
whether fixed or portable, such as bicycle lamps, household portable lamps, carriage
lamps, hand lanips, fixed and portable lamps for railways, public thoroughfares
and for other purposes, and any modification in design may be employed without
departing from the essential features of the invention as hereinbefore described.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. Means for feeding water in acetylene gas generators consisting of a tube E
in which a metallic thread or wire G is longitudinally provided for augmenting
the capilliarity of the tube substantially as described.
2. Means for feeding water in acetylene gas generators consisting of a tube E
provided with an outwardly flaring extremity in which tube a metallic thread
or wire G is longitudinally provided for augmenting the capilliarity of the tube,
such thread or wire projecting beyond the extremity of the tube substantially
as described.
3. Means for feeding water in acetylene gas generators substantially as and for
the purposes hereinbefore described and illustrated in the accompanying drawing.
Dated this 11th day of December 1897.
MARKS & CLERK,
18, Southampton Buildings, Chancery Lane, London, W.C., and,
13, Temple Street, Birmingham, Agents.