Improvements in or relating to Electrically Soldering or Brazing Metal.
Year: 1891

page_text: Date of Application, 29th Sept., 1891-Accepted, 31st Oct., 1891
COMPLETE SPECIFICATION.
Improvements in or relating to Electrically Soldering or
Brazing Metal.
A communication from abroad by CHARLES LEWIS COFFIN, of Detroit, in the
County of Wayne, State of Michigan, United States of America, Chemist.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323 High Holborn in the
County of Middlesex, Civil 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 consists in an improved mode of soldering or brazing metal,
hereinafter fully described and claimed.
The drawings indicate apparatus which may be used to practise this invention,
Figures 1 and 2 being perspectives, and Figures 3 and 4 the solder or brazing tool,
partly in section.
Trepresents a table, the top of which may be made of a conductor insulated by
the insulating material I, and connected by a conductor Y with one pole of a
generator, or the table top may be made of wood or other non-conducting material,
and one or both of the articles to be brazed or soldered (represented by M) may
be connected by the conductor Y with one pole of a generator, as indicated in
Figure 2.
represents the head of a soldering iron, which may be solid as indicated
in Figure 1, or provided with a point F, of high resistance as indicated in
Figure 2, or may be made hollow to act as a reservoir E for metal or solder as
shown in Figure 3, in which case it would be provided with an opening at its
point, and a valve R actuated by a valve stem, and a pin P passing through a slot
in the handle H. Or, as shown in Figure 4, the head C of the soldering iron may
be made hollow, and may have within it a resistance coil D, to increase the heating
effect. Whichever of these forms be used, the tool is connected in any convenient
way by the conductor X to the other pole of said generator, and a circuit closer A,
normally held out of contact with the circuit by the spring S, as shown in Figure 1,
may be provided to enable the operator to turn the current on or off at will. The
current being completed through one or both of the articles M, and the soldering
tool, heat is developed at the point of contact between the tool and the seam to be
soldered or brazed, this being an imperfect contact, and the tool is used for either
brazing or soldering in the well known manner.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. The herein described process of soldering or brazing, consisting in connecting
one or both of the articles to be soldered or brazed with one pole of a generator,
connecting the tool to the other pole of the generator, bringing the tool in contact
with the solder and seam to be soldered or brazed, and passing an electric current
through the tool and material, while the tool is maintained in contact with the
solder and seam, substantially as set forth.
Dated thiol 1
1001