A Lamp chiefly designed for Soldering.
Year: 1892

page_text: Date of Application (in United Kingdom), 12th Dec., 1892
Complete Specification Left, 12th Dec., 1892-Accepted, 14th Jan., 1893
COMPLETE SPECIFICATION
A Lamp chiefly designed for Soldering.
I, JACOB GEISER, of 40 Theodorsgraben, Bâle, in the Republic of Switzerland,
Tinman, 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 a lamp which is chiefly designed for soldering purposes
but which can also be used for boiling and in which the size of the heating flame.
and therefore the heating effect can be regulated by a special arrangement.
In carrying out my invention I apply in the metallic tube in which the flame
spreads a hinged tongue by means of which the aperture of the above mentioned
metallic tube through which the flame passes, can be made narrower or wider as
desired and consequently the size of the flame be varied. With the same object
the tube burner out of which issues the hydrocarbon (gasoline, benzine &c.) vapour
before its combustion, can be so arranged as to revolve, so that the aperture of
exit for the hydrocarbon vapour can be placed in a position more or less oblique
with reference to the long axis of the metallic tube in which the flame expands and
the flame be thus still further modified.
In Figures 1 and 2 of the accompanying drawing the soldering lamp is shewn in
vertical section and in lateral elevation whilst Figure 3 shews a horizontal section
along the line xx of Figure 1, and Figure 4 a vertical section along the line
the same figure.
yy of
Figure 5 shews how the apparatus is used for boiling, Figure 6 is a detail drawing,
Figures 7 and 8 shew two modifications of the burner of the soldering lamp.
The new soldering lamp Figures 1 to 5 consists of the metallic reservoir A the
upper portion of which is provided with an opening a intended for filling the
reservoir A with the liquid hydrocarbon and into which screws the copper tube B
carrying the burner and the arrangement for regulating the flame. The tube
cousists of two portions b, 6' forming an angle with each other, the part 6' being
provided with a slot above. In the part is placed a wick C which dips into the
hydrocarbon contained in the reservoir A, and in the upper end of the part 6 the
revolving burner-tube E, is screwed, it being also provided with a lateral opening c.
In the part 6' in which the flame is to expand, is arranged the tongue F hinged
at d upon the rear end of this tongue acts the spring G which forms the rod or
pin d upon which the tongue F is hinged, the spring being clamped at its other end
between the handle B' and the projection of b, the handle and projection being
connected together. The hinder forked end f of the tongue F engages with a screw
spindle H provided with a knob I, the screw spindle being screwed into a female
thread in the projection e. By turning the knob I the forepart g of the tongue F
can be raised or lowered as desired, the fork shaped end f of the tongue F being
constantly pressed against the knob I by the spring q.
Over the portion of the tube is applied the cap L which is hinged to b¹ by two

page_text: studs i and is intended to prevent the flame from spreading laterally or toward the
rear, so that the flame is compelled to advance through the fore end of the portion b¹
of the tube.
The new soldering lamp acts in the following manner:-In order to set the
soldering lamp in action, a quantity of benzine or other hydrocarbon is poured into
the upper part of the reservoir A and lighted. The flame thus originated warms
the portion of the tube in which is situated the wick C, saturated with the hydro-
carbon, so that this hydrocarbon is volatilized and issues from the opening c of the
burner in the form of a stream of combustible vapour. This hydrocarbon vapour
takes fire from the flame of the hydrocarbon burning at I and forms a flame which
expands in the part b¹ of the tube and issues from the fore end of the latter, the air
having at the same time free access to the flame through the opening D.
The heat communicated to the portion of the tube by the flame suffices to
generate in the wick C the amount of hydrocarbon vapour necessary for the main-
tenance of the lamp. If now it is desired to regulate the size of the flame issuing
from the fore end of 6' the burner tube E can be somewhat rotated in the portion b
of the tube B in order to give the opening of the burner a position more or less
oblique to the long axis of the portion of the tube, so that the flame formed by the
hydrocarbon vapour issuing from c can pass more or less directly through the
portion of the tube. If the greatest amount of heating effect is to be obtained
from the soldering lamp, the opening e is so placed that the stream of vapour which
issues from this opening is directed along the long axis of ', that is to say, is forced
directly through 6, in which position the flame is evidently at its largest. If
however a smaller heating effect is to be obtained, the burner tube is somewhat
rotated so that the stream of vapour issuing from c strikes upon the wall of b¹ at a
greater or less angle, in consequence of which the flame expands less.
C
A further regulation of the flame is obtained by means of the movable tongue F,
since by altering the position of the screw H the fore end y of the tongue F is
raised or lowered so that the passage of the flame through the part 61 of the tube is
more or less hindered and consequently the flame issuing from the fore end of b¹
becomes larger or smaller. If the lamp is to be used for the purpose of boiling the
cap L is turned on the studs i and brought into the position shewn in Figure 5, in
which it is supported by a stud m attached to the portion 6 of the tube, which
stud engages in a lateral slot n in the cap L, so that the flame issuing from the
part 6 of the tube strikes against the part u of the cap, and is consequently made to
curve outwards and come into contact with the vessel in which the boiling is to be
effected.
When the soldering lamp is not in use the burner tube is covered by a cap M
shewn separately in Figure 6.
In the form of construction shewn in Figure 7 the burner tube E is closed by a
pin M¹ which is screwed into its upper widened portion, so that when the apparatus
is not in use the hydrocarbon cannot escape from the reservoir A.
In the modification shewn in Figure 8 a similar closing pin M² is screwed into
the part 6 of the tube and the outlet c of the burner tube E¹ is placed below the
hinged tongue F. In the two latter forms of construction the tongue F is retained
in its various positions by a somewhat curved and spring like wire G' which is
fastened to it, and engages in a slot in the support G2 of the handle. The lamp for
soldering as above described may also be fed with spirit.
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 a soldering lamp in which combustible vapours are used as fuel, an arrange-
ment for regulating the force of the flame, essentially characterized by the
employment of a hinged tongue F which is inserted in the flame tube b', the fore
part of the tongue projecting into the tube b¹ whilst the hinder part can be so
regulated that the fore part of the tongue F can be raised or lowered and thereby

page_text: assage of the flame through the tube b¹ be more or less obstructed, substantially
reinbefore described.
In a soldering lamp such as is described in Claim 1
(a) For the further regulation of the size of the flame the arrangement for
revolving the burner tube E at the rear end of the metal tube b¹ in which
the flame expands so that by turning this tube the opening c assumes a posi-
tion more or less oblique to the long axis of the metal tube b', and the flame
is thereby caused to pass more or less directly through the tube 61.
(6) A hinged cap L fixed upon the tube b' which cap in its ordinary position
prevents the flame from issuing laterally and compels it to expand in the
tube b, whilst the same cap, being rotated through about 180 degrees
renders the lamp suitable for boiling purposes.
(c) The tube b, forming one piece in the tube b', having screwed into it the
burner tube E, and in which is arranged the wick dipping into the com-
bustible fluid to be made use of, the tube b thus serving to supply the warmth
necessary for the maintenance of the flame to the wick C and consequently
to the fluid to be volatilized.
Dated this 12th day of December 1892
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.