Improvements in and relating to Apparatus for Soldering..
Year: 1894

page_text: Date of Application, 23rd Apr., 1894
Complete Specification Left, 23rd Jan., 1895-Accepted, 6th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Apparatus for Soldering..
1, VEUVE LEON LONGUEMARE (née Amélie Adèle Lechesne) of 12, Rue du
Buisson, Saint Louis, Paris, in the Republic of France, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in apparatus for autogenous soldering,
especially applicable for soldering by means of a blow-pipe and carburetted air or
gas but which may also be employed for all soldering operations of a similar
character which necessitate the employment of a blow-pipe.
According to this invention the blow-pipe properly so called is constructed of an
outer casing provided with a screw-threaded tubular projection by which it is
fixed to the screw-threaded end of a tube which passes through a handle of wood
or other non-conducting material. The casing is adapted to receive an inner
chamber the upper part and sides of which are provided with a suitable number of
openings.
Sheet metal washers are interposed between the bottom of the outer chamber
and the lower part of the inner chamber on which latter screws a cap between
which and the inner chamber is a space, the inner part of the cap being
provided with annular or helicoidal grooves; or it may be enlarged to form an
annular chamber. In some cases the top of the inner chamber is provided with a
central hole only.
The carburetter is constructed of a chamber through which passes a central
tube, the said chamber being provided at the lower part and also at the upper part
with a suitable number of perforated sheet metal plates; the central tube com-
municates at the upper part with a cock into which opens at one part an inlet tube
for the air or gas to be carburetted and at another part a pipe which connects
the first named cock with a second cock and a pipe which is in communication with
a diffuser enclosed within a cylindrical chamber provided with perforated sheet
metal plates and connected to a vertical tube communicating with the blow-pipe
proper. The chamber containing the central tube communicates with the chamber
containing the diffuser by means of a pipe.
In order to prevent the complete extinction of the blow-pipe at the end of each
operation I advantageously place, at a suitable part of the pipe connecting the
carburetter with the blow-pipe, a cock closed by a spring which allows a small
quantity of gas to pass so that a small jet is always burning at the outlet of the
blow-pipe.
Dis 22nd dar of duil 1804

page_text: improvements in and relating to Apparatus for somering.
I, VEUVE LÉON LONGUEMARE (née Amélie Adèle Lechesne) of 12, Rue du
Buisson, Saint Louis, 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 :-
This invention relates to improvements in apparatus especially adapted for
autogenous soldering by means of a blow pipe and carburetted air, but which may
also be employed for other operations which necessitate the employment of a
blow-pipe.
In order to enable the invention to be fully understood I will describe the same
by reference to the accompanying drawings, in which the blow-pipe and the
carburetter are shewn comprising my improved soldering apparatus.
Figure 1 is an elevation of the nozzle or tuyère and tube and handle constituting
the blow-pipe:
Figure 2 is a section; and,
Figure 3 is a plan of the nozzle or tuyère :
Figure 4 is a section of a detail of the nozzle or tuyère:
Figures 5 and 6 are sections illustrating modifications of the nozzle or tuyère;
and,
Figure 7 is a vertical section of the air or carburetted gas generator.
The blow-pipe properly so called comprises a chamber a (Figures 1, 2 and 3)
provided with a screw-threaded neck al by which it is connected to the screw-
threaded end of a tube t which passes through a handle of wood or other
insulating material. The chamber a is screw-threaded to receive a cylindrical
chamber c or kind of inverted capsule the top end of which is formed with a
central hole c¹ and with a suitable number of other holes; the side of the
chamber c is also perforated above the screw-threads as shewn clearly at c³,
Figure 2.
с
Wire-gauze discs d are interposed between the bottom of the chamber a and the
lower edge of the chamber c which is provided with a flange e on which bears the
lower edge of a screw-threaded thimble e, a narrow annular space being left
between the thimble and the chamber c, as shewn in Figure 2, and in this case the
thimble e is provided internally with annular or helicoidal grooves; or it may be
enlarged as shewn in Figure 5 so as to form an annular chamber e of sufficient size
between itself and the chamber c.
The blow-pipe nozzle shewn in Figure 6 is similar to that hereinbefore
described with reference to Figures 1, 2, 3, 4 and 5, in which the same letters
indicate similar parts. This blow-pipe only differs from that above described in
that it is narrower and that the top of the chamber c is provided with a central
opening only.
For economically and regularly feeding my blow-pipe I employ the novel air or
gas carburetter shewn at Figure 7.
This carburetter comprises a casing f (preferably cylindrical) provided at a
short distance from its bottom with a wire-gauze or perforated metal plate 1,
which plate supports spongy bodies such as sponge, wool, or cotton, above which
are arranged other wire-gauze or perforated metal plates, through which, as
well as through the plate 1, passes a central tube g which opens into the chamber
between the bottom of the latter and the plate . This tube y communicates at
its upper part with a cock the vertical passage in which can be closed by a
conical plug and the horizontal passage of which is always open by reason of the
reduced diameter of the plug and corresponds with two tubes i, ¹, one of which i¹

page_text: opens into a second cock k on which is mounted a tube . This tube ¹ passes into
a larger tube mounted on the casing fand opens into a kind of rose or diffuser m
within a cylindrical chamber n which is screwed upon the tube and provided
internally with wire-gauze discs n', n¹ and closed at its upper part by a cap n² on
which is soldered or otherwise fixed the end of the pipe t which opens at the other
end into the blow-pipe nozzle or tuyère herein before described.
The casing is provided with an overflow cock in order to facilitate the
regulation of the level of the carburetting liquid and also with an opening closed
by a stopper to admit of the introduction of this liquid.
In order to make use of my improved soldering apparatus the carburetter is first
filled with carburetting liquid, which is generally a hydrocarbon, such as gasoline,
until it will flow through the cock p which is then closed. The cock h is then
opened and the air or gas to be carburetted is forced in by a blower or other
suitable means through the tube i, enters the chamber through the central tubeg,
and passes through the metal plate which causes it to be distributed uniformly
over the spongy bodies saturated with the carburetting liquid. Upon coming in
contact with these bodies the air or gas becomes charged with hydrocarbon vapours,
1 asses through the metal plates f, which ensure an intimate mixture of the
gases, and enters the chamber n through the tube 7, whence it is conducted to the
nozzle of the blow-pipe through the tube t. It afterwards passes through the metal
plates of this blow-pipe nozzle which uniformly divide the gas and insure its
perfect mixture with the hydrocarbons with which it is charged before it escapes
through the openings in the chamber e and is burned. The issue of the gas which
escapes between the chamber and the thimble e is rendered constant by the
annular grooves or chambers in the thimble in which the gases expand and become
heated. These grooves or chambers also facilitate the ignition and tend to prevent
accidental or sudden extinctions.
At the commencement of the operation the gas which escapes from the blow-pipe
is generally too highly carburetted because the carburetting liquid is naturally
richer than at the end of the operation. The opening of the cock is therefore at
such times usually partially closed and the cock k is opened to a certain extent;
in this manner less air or gas passes through the tube
a certain quantity
9 but
passes through the tube k which conducts it into the chamber where it mixes ou
issuing from the diffuser m with the carburetted air or gas entering through the
tube . The discs n' insure an intimate mixing of the gas which passes through
them and it will be easily understood that the degree of carburation of the gas can
be regulated according to the work to be executed.
In order to prevent the coniplete extinction of the blow-pipe at the end of each
operation I place at any suitable part of the pipet a cock closed by a spring which
allows a small quantity of gas to pass which is constantly burning at the outlet of
the blow-pipe.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. An apparatus for the autogenous soldering of metals or for effecting other
blow-pipe operations by means of carburetted air or gas and comprising:
:-
(a) A blow-pipe composed of a casing fixed to a tube and on which is screwed,
with perforated metal discs interposed, a central capsule the end of which as
well as its side is provided with one or more holes, onto which capsule is
screwed a thimble, a space being left between the thimble and the central
capsule which is grooved or not substantially as herein before described by
reference to Figures 1 to 6 of the accompanying drawings.
(b) A carburetter comprising a chamber traversed by a central tube and
provided at the lower part and also at the upper part with a suitable number
of perforated metal plates; the central tube communicating at the upper

page_text: .
part with a cock into which opens an inlet pipe for the air or gas to be
carburetted and a pipe which connects this first cock with a second cock
communicating with a diffuser enclosed in a cylindrical chamber provided
with perforated metal plates and secured to the blow-pipe and screwed upon
a vertical tube in communication with the carburetting chamber, substan-
tially as herein before described by reference to Figure 7 of the accompanying
drawings.
2. The improved apparatus hereinbefore described and illustrated in the
ccompanying drawings.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.