Improvements in and relating to Soldering Irons.
Year: 1895

page_text: Date of Application, 20th May, 1895-Accepted, 10th Aug.. 1395
COMPLETE SPECIFICATION.
Improvements in and relating to Soldering Irons.
We, FRIEDRICH WILHELM SCHINDLER-JENNY of Kennelbach near Bregenz,
Austria, Manufacturer, and PAUL STOTZ, of 142, Neckarstrasse, Stuttgart,
Germany, Manufacturer, 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 heating bodies for electric soldering irons, in which the
heating body contains an electric conductor and is placed in the interior of a
metallic soldering body, the heat developed by the electric current being transferred
from the interior to the said soldering body.
The object of our invention is, first, to arrange the electric conductor in the
heating body in a most convenient manner so as to transfer as much as possible the
developed heat to the working edge or point of the soldering iron; second, to
allow of momentaneously heating the soldering iron, so that when opening the
electric current it will immediately be ready for using; and third, to retain for a
long time the heat developed in the heating body, so that after having been heated
the soldering iron proper may be disconnected from the main wires and used freely
like a common soldering iron.
We attain these objects by the means hereinafter described and illustrated in
the accompanying drawings, in which :-
Fig. 1 is a front view of our invention;
Fig. 2 a side elevation thereof; and
Fig. 3 a vertical section of Fig. 1.
The heating body a consists of a refractory insulating material or a refractory
material insulated by a convenient coating. In its lower tapering part the body a
The
is provided with channels d, k, g, and with grooves h on its surface.
channels d, k, run through the body from the front to the rear end and the
channels g from one side to the other, whilst the grooves h passing round the edge
from one side to the other communicate with the open ends of two adjacent
channels g.
Channels in the upper part of the body a serve for introducing the heating
conductor into the body and leading it out of the same. Channels e crossing the
channels c are provided for conveying the conductor into grooves communicating
with the outmost of channels g, and channels lead from channels c to the
channels d.
The ends of channels d, k, are placed in recesses 6 on the front and rear side of
the body a.
The grooves f, h, l, and the depressions b bring about the passage of the
conductor from one system of channels to the other and are moreover intended to
allow of sinking the free parts of the conductor in order to prevent them from
coming into leading or short circuiting contact with the walls of the hollow
soldering body, when the heating body a is brought to its place. By these means
the insulating of the electric conductor is not needed, and the body a can be
brought into close contact with the inner sides of the soldering body so as to allow
of quickly and perfectly transferring the developed heat to the latter.
The electric conductor may be run through the several channels and grooves in
any order, the heating effect being the same, provided that the conductor passes
through all the channels and all the grooves, but preferably, it is entered through

page_text: the uppermost left hand channel c (Fig. 1) then passed outside and through the
uppermost channel e which crosses said channel c then through groove f shewn in
dotted lines in Fig. 2 into the outermost channel at the right hand of Fig. 2 and
alternately through grooves and the other channels g towards the left hand of
Fig. 2 thus surrounding the tapering part of the refractory body, then from the
outermost channel 9 at the left hand of Fig. 2 passed through groove shewn in
full lines, through lowermost channel e which crosses the middle or lowermost of
the channels (Fig. 1), then led through this channel from which it is passed
through left hand groove 7 (Fig. 1), left hand channels d one after another,
channels k-in the same way, right band channels d, right hand groove 7 and
through the uppermost right hand channel c where it leaves the refractory body.
The conductor passing freely through the said channels may be easily removed
in order to be repaired or substituted by another, when damaged, without it being
necessary to throw away the heating body a.
C
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
A heating body for electric soldering irons consisting of a block a of refractory
and insulating material or of refractory material insulated by a coating, the lower
tapering part of the said block being provided with channels d, k, extending from
the front to the rear, with channels g extending from one side to the other, and
with grooves h passing round the edge of the tapering part and communicating
with the channels g, substantially as described and shewn.
Dated this 20th day of May 1895
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicants.