Improvements in Apparatus for Distributing Electric Currents for Heating Purposes.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Distributing Electric Currents
for Heating Purposes.
I, GEORGE DEXTER BURTON, a Citizen of the United States of America,
residing at 194, Washington Street, Boston, in the County of Suffolk and State
of Massachusetts, United States of America, Electrician, do hereby declare the
nature of my invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
The object of this invention is to distribute heating currents of electricity of
different volumes for heating metals for forging or other purposes.
The drawing represents a plan of an apparatus embodying this improved system
of electrical distribution.
This apparatus embraces a primary current converter and a secondary current
converter.
Each of these converters as shown in this apparatus consists of an annular core
composed of different lengths of uninsulated or partially insulated wire, said
lengths being arranged side by side and breaking joints at various intervals in the
core, primary circuit coils composed of comparatively fine wire and surrounding
the said core at intervals, secondary coils composed of sheets or plates of copper
surrounding said core between the primary coils and insulated therefrom two
exterior copper rings disposed around the structure, the positive terminals of all
the secondary coils being connected to one of said rings, and the negative terminals
of said secondary coils being all connected to the other of said rings, said rings thus
constituting the positive and negative terminals of the converter as hereinafter
described. The primary coils are arranged in pairs, the coils of each pair being
in series with each other and in parallel with every pair. The secondary coils are
connected to the rings in parallel or multiple arc.
The positive ring 10 and negative ring 11 of the primary converter are disposed
in different planes, one above the other. This converter is connected in any
suitable manner, with a suitable source of electricity, such as an alternating current
dynamo, from which it receives the current to be converted. These rings are
composed of copper, or other suitable conductive material, and provided with
bosses 12 and 13 to which screw-threaded sockets 14 and 15, also composed of
conductive material, are attached by bolts 16, or other means.
Conductors, preferably in the form of rods 20 and 21, composed of copper or
other suitable conductive material, are connected at their inner ends with these
sockets, and at their outer ends with the terminals of a secondary converter 30.
The primary converter reduces the intensity and increases the volume of the
current, and the secondary converter still further reduces its intensity and increases
its volume.
The secondary converter is connected, by means of flexible cables 40 and 41, or
other suitable conductors with an electric heater 50.
The rods 20 and 21 are provided with sliding clamps 22 and 23, and conductors
24 and 25 are connected at their inner ends to said clamps, and at their outer ends
to any suitable electric metal working apparatus.
In the use of this apparatus, currents may be taken off at different points
and supplied at the same time to the different machines in the volumes required
by each.
If desired rheostats 60 and 61 may be interposed in the branch circuits.

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 an apparatus for distributing electric currents for heating purposes, the
combination of a current converter, provided with exterior rings constituting
the positive and negative poles, a secondary current converter provided with
exterior rings constituting the positive and negative poles, conductors connecting
the primary with the secondary converter, an electric heater; and conductors
connecting the rings of the secondary converter with said heater.
2. In an apparatus for distributing electric currents for heating purposes, the
combination of a current converter provided with exterior rings constituting the
positive and negative poles, a secondary current converter provided with exterior
rings constituting the positive and negative poles, conductors connecting the
primary with the secondary converter, an electric heater, and flexible conductors
connecting the rings of the secondary converter with said heater.
3. In an apparatus for distributing electric currents for heating purposes, the
combination of a current converter, provided with exterior rings constituting
the positive and negative poles, a secondary current converter, provided with
exterior rings constituting the positive and negative poles, conductors connecting
the primary and secondary converters, clamps adjustable on said conductors, an
electric heater, and conductors connecting said heater with said clamps.
4. In an apparatus for distributing electric currents for heating purposes, the
combination of a current converter provided with exterior rings constituting the
positive and negative poles, a secondary current converter, provided with exterior
rings constituting the positive and negative poles, conductors connecting the
primary with the secondary converter, an electric heater, clamps adjustable on
said conductors, a second electric heater, and conductors connecting said heaters
with said clamps.
C •
1 1000
GEORGE DEXTER BURTON.
Witnesses:
ETTIE F. PHILIPSON,
Stenographer, Boston, Mass., U.S.A.
CHESTER MARR,
Bookkeeper, Gloucester, Mass., U.S.A.