Method and Devices for Heating by Means of Electric Currents.
Year: 1890

page_text: Date of Application, 27th Sept., 1890
Complete Specification Left, 29th June, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Method and Devices for Heating by Means of Electric Currents.
I, CHARLES ZIPERNOWSKI of Budapest in the Kingdom of Hungary, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to a method and apparatus of applying electric currents
to produce heat for various technical and industrial purposes, such as heating,
boiling, drying, melting and soldering. The apparatus may be constructed in the
form of soldering irons or appliances for ironing, roasting, boiling or baking,
portable or stationary heating arrangements in apartments or vehicles, or stoves for
heating rooms, or other purposes. This invention may also be applied to the
warming or heating of instruments for medical purposes, or hair curling or the
like, to maintain very constant temperature of metals liquids or gases, for melting,
hardening or tempering and other industrial purposes.
For producing such currents as are required, alternating current transformers are
especially adapted, their secondary coils consisting of a few turns of great sectional
area.
Such transformers can readily be connected to existing alternate current plant.
Primary or secondary batteries, continuous or alternate current dynamos or other
suitable sources of electricity may however be employed. When the current is
continuous the part of a soldering iron which touches the solder should be con-
nected to the positive pole.
A convenient form of soldering tool, operating in this way, consists of a con-
ducting core terminating in a point or edge in contact with the end of a conducting
casing within which the core is enclosed, being insulated from the casing, except at
its end. The core being connected to the one electrode, and the casing, which is
held by a non conducting handle, being connected to the other electrode, heat is
developed at the end of the casing, which may be pointed or chisel shaped to suit
different soldering purposes. There may be several conducting cores within one
casing, or, instead of having the core inside, the point of the one conductor can
be directed obliquely against the other with a delicate adjustment of distance so as
to produce the heat required.
Dated this 27th day of September 1890.
ADUL Q. IMDAV
ADEL & IMDAY
Agents for the Applicant.
COMPLETE SPECIFICATION.
Method and Devices for Heating by Means of Electric Currents.
I, CHARLES ZIPERNOWSKI, of Budapest, in the Kingdom of Hungary, 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 a method and apparatus of applying electric currents
to produce heat for various technical and industrial purposes, such as heating,
boiling, drying, melting and soldering. The apparatus may be constructed in the
form of soldering irons or appliances for ironing, roasting, boiling or baking,
portable or stationary heating arrangements in apartments or vehicles or stoves for
heating rooms or other purposes. This invention may also be applied to the
warming or heating of instruments for medical purposes or hair curling or the like,

page_text: to maintain very constant temperature of metals liquids or gases, for melting,
hardening or tempering and other industrial purposes.
For producing such currents as are required, alternating current transformers are
especially adapted, their secondary coils consisting of a few turns of great sectional
area.
Such transformers can readily be connected to existing alternate current plant.
Primary or secondary batteries, continuous or alternate current dynamos or other
suitable sources of electricity may however be employed. When the current, is
continuous the part of a soldering iron which touches the solder should be con-
nected to the positive pole.
A convenient form of soldering tool, operating in this way consists of a con-
ducting core terminating in a point or edge in contact with the end of a conducting
casing within which the core is enclosed, being insulated from the casing except at
its end. The core being connected to the one electrode, and the casing which is
held by a non conducting handle being connected to the other electrode, heat is
developed at the end of the casing, which may be pointed or chisel shaped to suit
different soldering purposes. There may be several conducting cores within one
casing, or, instead of having the core inside, the point of the one conductor can be
directed oliquely against the other with a delicate adjustment of distance so as to
produce the heat required.
The accompanying drawings represent several forms of soldering irons operating
according to my invention. As shewn in the longitudinal section, Fig. 1, the one
conductor L', makes small or imperfect contact at C with the other concentric con-
ductor L² which is separated from L', by insulating material J and is connected to
a conductor passing through the handle H.
Owing to the imperfect contact at C the point S becomes heated for soldering.
The inner conductor L¹ may be of carbon and the outer L² of copper. The point,
instead of being conical as at S may be chisel shaped as shewn by Fig. 1ª or hollow
as in Fig. 1B, or of other shape. Also as shewn in Figs. 2 and 24 the outer and
inner points may be made removeable. As shewn by the plan Fig. 3 and side
view Fig. 4 the inner conductor L' lies between two side parts L2 forming the
other conductor; this form is especially suitable for a broad edged soldering
iron K.
Fig. 5 shews a form of soldering iron in which the contact at C is adjustable by
means of a screw T acting on a toothed segment attached to the holder of L.
Subdivided contacts such as C C2 C3 shewn in Fig. 6 may be employed instead
of a single contact.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that I make no
general claim for producing heat by transmitting electrical currents through
imperfect contacts of conductors but what I claim is:-
A soldering iron consisting of two conductors making small or imperfect contact
near the point of the iron that has to be heated substantially as described.
Dated this 29th day of June 1891
ABEL & IMRAY,
Agents for the Applicant.