Improvements in Soldering-lamps and Soldering-irons.
Year: 1896

page_text: Date of Application, 12th May, 1896
Complete Specification Left, 11th Feb., 1897-Accepted, 12th May. 1897
PROVISIONAL SPECIFICATION.
Improvements in Soldering-lamps and Soldering-irons.
I, JOSEPH FOUILLOUD of 21 Boulevard Poissonnière, Paris, in the Republic of
France, do hereby declare the nature of this invention to be as follows:-
The improvements forming the subject of this invention apply more especially
to soldering-lamps burning mineral oil, but are also partly applicable to soldering-
irons, operating with the aid of a blow-pipe and likewise using mineral oil.
The said improvements ensure a reliable and regular action of these apparatuses,
they moreover facilitate their construction and afford great safety. My improve-
ments relate to the following points :
1. To the method of introducing the wick from the top, in order that no
carbonized parts of the wick or other residues detrimental to the efficient action of
the valve may ever be left at or near the said valve.
2. To the particular arrangement of the valve which acts in the direction of
travel of the mineral oil vapours so that when once the valve is closed, the entry
of vapours into the gasifying chamber is prevented and consequently the ultimate
condensation of the vapour and the soiling which would result therefrom are
avoided.
3. To the particular construction of the safety valve and to its arrangement at
the place, where the pressure is highest.
4. To the omission of the regulator which controls the air feed and to the
general form especially of the soldering-lamp.
The wick conduit or tube is hard-soldered to the oil receptacle and encloses a
wick of appropriate material, serving to raise the oil by capillary action; the
distributing valve is actuated by a suitable operating handle. The cap or burner
is provided with a small perforation, through which the vapour of the volatile oil
or mineral oil escapes. Fixed upon the burner is a sheath which serves to impart
direction to the flame and at the same time admits atmospheric air to the flame:
the extremity of the sheath is suitably protected by a ring. The lamp is provided
with a handle for holding it; also with a stopper for closing the feed-opening of
the oil receptacle; and with a safety-valve.
The wick conduit has, at its upper part, a screw threaded hole closed by a screw-
threaded stopper which can be removed, to allow of the introduction of the wick
through the said hole from the top. By the aid of this hole moreover the
carbonized part of the wick can be cleaned, the residues or sediments that may
bave formed at this place can be removed, and the condition of the valve which is
put in place by introducing it through the said hole, can be ascertained.
The valve is of conical shape and forms part of a screw threaded rod or spindle
provided with a square portion, upon which the operating knob or handle is
fastened. The valve bears upon a seat, rearwardly of which a small conduit is
provided, terminating in a chainber upon which the stopper is fastened by screw
threads. The said stopper is provided with a small perforation forming the
burner proper.
The said chamber is formed in a part integral with the wick tube and lies
directly above the hole which is closed by the screw threaded stopper. A stuffing-
box is provided to prevent the escape of gas around the valve spindle.

page_text: Upon the walls of the aforesaid chamber is screwed the sheath before mentioned
which sheath is provided with slots so constructed that no recourse need he had to
a regulator. The lower slots have the shape of a button hole the rounded part of
which lies toward the burner. The upper slots are of nearly the same shape as,
but they are narrower and longer than, the lower slots. The outer extremity of
the sheath is as before stated surrounded by a protecting ring appertaining to a
support, fixed by means of a screw upon an appendix or connection of the wick
tube. This appendix or connection, the hole of the screw bolt, and the chamber
lie in one and the same inclined plane relatively to the axis of the lamp.
The stopper which closes the feed-opening of the oil receptacle is screwed upon
a tubular piece, hard-soldered upon the top of the receptacle, and is provided with
a mounting formed by a tin disc or washer, which ensures a tight and hermetic
joint.
The safety valve is formed by a dise of tin or other soft metal located in a tubular
piece, which is hard-soldered upon the top of the oil receptacle. The disc is
tightened by a screw stopper, in the centre of which a pointed rod is screwed. The
point of the rod bears lightly on the disc. Above the conical point, the rod is.
weakened by being reduced in diameter. When the internal pressure rises beyond.
the allowed limits, the disc is pressed against the point and is pierced by it and
owing to the reduced part or neck of the rod an annular opening is provided between
the rod and the disc through which opening the vapours escape, and find an outlet
through a small orifice provided in the stopper. After each operation of the valve
it is sufficient to replace the pierced disc by an unpierced disc, which manipulation
is very readily performed. The operation of the safety valve does not involve any
disturbance of the action of the lamp, the pressure in which can be immediately
and very rapidly restored. The above described safety-valve device is applicable
to soldering-irons, in which volatile oil is used.
The oil receptacle has a small cup or reservoir arranged around the wick tube,
for starting the apparatus. Into this cup or reservoir a few drops of volatile oil or
alcohol are placed for rapidly heating the head of the apparatus and for thus
starting the vaporization of the oil which is completely gasified in the chamber above
referred to. When the apparatus has been started, the vaporization and the
gasification are effected by the heat, which the apparatus derives from conduction.
Finally the handle is fixed by means of screws screwed into appropriate
appendices or connections, appertaining respectively to the receptacle and to an
elongation of the wick tube.
A soldering iron according to this invention is constructed substantially as
follows:
The receptacle containing the volatile oil; is surmounted by the blow pipe and
by a top frame in which latter the soldering iron proper is fixed. The volatile oil
is introduced into the receptacle through a screw stopper provided with a lead
washer. The gas produced passes through conduits to the valve and thence to a
chamber where its gasification is completed; this chamber is surmounted by a
stopper provided with a small perforation forming the burner proper. The blow
pipe is provided with openings for the admission of air.
The distribution of the gas is regulated by a conical valve upon a rod passing
through a stuffing box the said rod being provided with an operating knob.
A safety valve, constructed in the manner described above in connection with the
lamp, is provided upon a suitable part of the apparatus, preferably adjacent to the
feed stopper.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Improvements in Soldering-lamps and Soldering-irons.
I, JOSEPH FOUILLOUD, of 21 Boulevard Poissonnière, 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 aud
by the following statement:-
The improvements forming the subject of this invention apply more especially to
soldering lamps burning mineral oil, but are also partly applicable to soldering
irons, operating with the aid of a blow-pipe and likewise using mineral oil.
The said improvements ensure a reliable and regular action of these apparatuses,
they moreover facilitate their construction and afford great safety. My improve-
ments relate to the following points :
(1.) To the method of introducing the wick from the top, in order that no
carbonized parts of the wick or other residues detrimental to the efficient action of
the valve may ever be left at or near the said valve.
(2.) To the particular arrangement of the valve, which acts in the direction of
travel of the mineral oil vapours so that when once the valve is closed, the entry
of vapours into the gasifying chamber is prevented and consequently the ultimate
condensation of the vapour and the soiling which would result therefrom are
avoided.
(3.) To the particular construction of the safety valve and to its arrangement at
the place, where the pressure is highest.
(4.) To the omission of the regulator which controls the air feed and to the
general form, especially of the soldering lamp.
In order to enable the invention to be clearly understood I have represented the
same in the accompanying drawing in which
Figure 1 represents in vertical section on the line 1-1 of Figure 2, a soldering-
lamp constructed according to my invention.
Figure 2 is a plan of the same.
Figure 3 is a vertical section on the line 3-3 of Figure 2, and
Figure 4 is a longitudinal section of my improved soldering iron.
In these figures; A is the receptacle for mineral oil; B is the wick conduit or
tube which enters the receptacle A, to which it is hard-soldered the said conduit
enclosing a wick of appropriate material, serving to raise the oil by capillary
action; the distributing valve C is actuated by a suitable operating handle c
The cap or burner is provided with a small perforation, through which the
vapour of the volatile oil or mineral oil escapes. D is a sheath fixed upon the
burner which serves to impart direction to the flame and at the same time admits
atmospheric air to the flame; the extremity of the sheath is suitably protected by
a ring s. The lamp is provided with a handle P for holding it, also with
a stopper a for closing the feed-opening of the oil receptacle and with a
safety-valve N.
The wick conduit B has, at its upper part, a screw threaded hole closed by a
screw threaded stopper b, which can be removed to allow of the introduction of the
wick through the said hole from the top. By the aid of this hole moreover the
carbonized part of the wick can be cleaned, the residues or sediments that may
have formed at this place can be removed, and the condition of the valve C, which
is put in place by introducing it through the said hole, can be ascertained.
The valve is of conical shape and forms part of a screw-threaded rod or spindle
provided with a square portion, upon which the operating knob or handle C¹ is
fastened. The valve bears upon a seat c¹ rearwardly of which a small conduit e is
provided, terminating in a chamber e', upon which the cap or burner is fastened

page_text: by screw threads. The said cap is provided with a small perforation of forming the
burner proper.
The said chamber e is formed in a part integral with the wick tube and lies
directly above the hole which is closed by the screw threaded stopper b. A
stuffing-box is provided to prevent the escape of gas around the valve spindle.
Upon the walls of the aforesaid chamber e¹ is screwed the sheath D which sheath
is provided with slots d and d so constructed that no recourse need be had to a
regulator. The lower slots d have the shape of a button hole, the rounded part of
which lies toward the burner f. The upper slots d' are of nearly the same shape
as, but they are narrower and longer than, the lower slots d. The outer extremity
of the sheath is as before stated surrounded by a protecting ring & appertaining
to a support S, fixed by means of a screw upon an appendix or connection of
the wick tube B. This appendix or connection 1, the hole of the screw bolt b
and the chamber el lie in one and the same inclined plane relatively to the axis of
the lamp.
8
The stopper a which closes the feed-opening of the oil receptacle is screwed
upon a tubular piece, hard-soldered upon the top of the receptacle A and is
provided with a mounting a formed by a tin-disc or washer, which ensures a tight
and hermetic joint.
The safety valve N is formed by a disc of tin or other soft metal n, located in
a tubular piece, which is hard-soldered upon the top of the oil receptacle A, the
disc tightened by a screw stopper, in the centre of which a pointed rod is
screwed. The point of the rod n' bears lightly on the disc n. Above the conical
point, the rod is weakened by being reduced in diameter. When the internal
pressure rises beyond the allowed limits the disc n is pressed against the point n¹
and is pierced by it and owing to the reduced part or neck of the rod an annular
opening is provided between the rod and the disc through which opening the
vapours escape, and find an outlet through a small orifice o provided in the stopper.
After each operation of the valve it is sufficient to replace the pierced disc, by an
unpierced disc, which manipulation is very readily performed. The operation of
the safety valve does not involve any disturbance of the action of the lamp the
pressure in which can be immediately and very rapidly restored. The above
described safety valve device is applicable to soldering-irons, in which volatile oil
is used.
The oil receptacle A has a small cup or reservoir a² arranged around the wick
tube, for starting the apparatus. Into this cup or reservoir a few drops of volatile
oil or alcohol are placed for rapidly heating the head of the apparatus and for
thus starting the vaporization of the oil which is completely gasified in the
chamber e. When the apparatus has been started, the vaporization and the
gasification are effected by the heat, which the apparatus derives from conduction.
Finally the handle P is fixed by means of screws v' and screwed into appro-
priate appendices or connections n² and n³, appertaining respectively to the
receptacle A and to an elongation of the wick tube B.
A soldering iron according to this invention is constructed substantially as
represented in Fig. 4.
The receptacle A containing the volatile oil is surmounted by the blow pipe D
and by a top frame or mounting G in which latter the soldering iron proper F is
fixed. The volatile oil is introduced into the receptacle through a screw stopper a
provided with a lead washer a'. The gas produced passes through conduits p
and p to the valve and thence to a chamber e where its gasification is completed;
this chamber is surmounted by a stopper f provided with a small perforation
forming the burner proper. The blow pipe is provided with openings d and di for
the admission of air and for mixing the same with the vapour of the volatile oil.
The distribution of the gas is regulated by a conical valve upon a rod c³ passing
through a stuffing box c³ the said rod being provided with an operating knob C³.
In communication with the feed stopper is the safety valve N, constructed in
the manner described above in connection with the lamp.

page_text: 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. In soldering lamps, in which mineral oil is used, the arrangement of the wick-
holding tube B with an opening at the top, closed by a screw threaded stopper,.
for introducing and withdrawing the wick, for cleaning, inspecting and mounting
the valve; the said wick holding tube further serving to receive the distributing
valve, the burner or butterfly, the burner-sheath, the protector and one extremity
of the handle; substantially as described.
2. In soldering lamps, in which mineral oil is used, the arrangement of the.
valve C acting in the direction in which the vapours pass, so that the latter, when
the valve is closed, are prevented from entering the conduit (e) and from soiling
or obstructing the latter by condensation; the said valve acting in conjunction
with a screw-threaded rod or spindle which is connected to an operating knob and
is put in place by insertion into a hole provided at the upper part of the wick
holding tube; substantially as described.
3. In soldering lamps and soldering-irons, in which mineral oil is used, the
arrangement of a safety valve comprising a plate or disc of tin or other soft
metal (n) which becomes bent by the internal pressure, when this latter exceeds
a given height, and is then pierced by a fixed point (¹) so as to establish a passage
through which the vapours escape; substantially as described.
4. The soldering lamp operated by mineral oil, substantially as described as a.
whole and in detail, with reference to the accompanying drawings.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant...