Year: 1887

page_text: Date of Application, 10th Aug., 1887
Complete Specification Left, 9th May, 1888
Complete Specification Accepted, 10th Aug., 1888
We, LUCIEN ANSPACH and LEON GERARD, Electrical Engineers, of Brussels,
Belgium, do hereby declare the nature of our invention to be as follows:-
Our invention relates to high-tension dynamo-machines, and, more particularly to
the method of winding and insulating the wire on the armature, collecting the currents
from the amature and controlling them from a distance.
The armature is wound and connected in such a manner, that the tension at which
the commutators work is only a fraction of the total tension, and that the drawbacks
resulting from great differences of tension between adjoining segments are thus avoided.
The armature carries on the same magnetic drum or cylinder two or more induced
currents entirely independent of each other and terminating in two or more commu-
tators mounted on the shaft of the dynamo-machine. The commutators are joined
together in series (the negative brushes of the first commutator being directly connected
with the positive brushes of the second, and so on, while the positive brushes of the
first, and the negative brushes of the last commutator are connected with the line or
external circuit). If more than two commutators are employed, there is more than
one situated on the same side of the armature. In this case the wire leading to the
commutators which are furthest from the armature, pass underneath the segments of
the commutators which are nearest to the armature, for instance in a canal or groove
formed in the interior of the axle, or in a space left between the axle and the commu-
tators. The segments of the different circuits overlap with each other.
If the machine has two commutators and two armature circuits, the armature is
divided into an even number of segments, of which the first, third, fifth etc. segments
are connected with corresponding segments of the first commutator, while the second,
fourth, sixth etc., segments are connected with corresponding segments of the second
commutator.

page_text: The circuits belonging to different induced circuits are separated from each other by
insulating material, for instance by sheets of vulcanized fibre and silk packing placed
between the same, or by sheets of mica. We also insulate from each other different
portions of the induced circuits and of the inducing wires of dynamo-machines, for
instance by placing between the superposed layers of wire of the same segment a sheet
of vulcanised fibre, and between adjoining wires of the same layer, a thin packing of
silk. This method of insulation has for its object to insulate from each other
electrically and thermally such portions of wire which are subjected to considerable
differences of tension.
The apparatus for measuring at a distance, which we employ, is, placed at the
beginning or high tension side of the line, near the dynamo-imachines, and serves to
ascertain exactly the tension developed at the end (low tension extremity) of the line.
For this purpose the electro-magnets of the voltmeter (whatever its design or the mode
of suspension and working of the indicating needle may be) are excited firstly by a
conductor placed as a shunt between the two extremities of the line, and secondly by
a wire wound in opposite direction to the first and placed in a shunt between two
points of one of the two conductors of the line.
בד
FAIRFAX & WETTER,
433, Strand, London,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in or Connected with Dynamo-electric Machines and
Electro-motors.
Wo, LUCIEN ANSPACH, and LEON GERARD, Electrical Engineers, of Brussels,
Belgium, do hereby declare the nature of our invention and in what manner the
same may be performed, to be particularly described and ascertained in and by
the following statement :-
Our invention relates to high-tension dynamo-machines, and more particularly to
the method of winding and insulating the wire on the armature and collecting the
currents from the same.
The armature (see Fig. 1 and 2 of the accompanying drawings) is wound and
connected in such a manner, that the tension at which the collectors work is only a
fraction of the total tension, and that the drawbacks resulting from excessive differences
of tension between adjoining collector segments are thus avoided. The armature
carries on the same magnetic drum or cylinder two or more induced circuits entirely
independent of each other and terminating in two or more collectors mounted on the
shaft of the dynamo-machine. The collectors are joined together in series (the negative
brushes of the first collectors being directly connected with the positive brushes of the
second, and so on, while the positive brushes of the first and the negative brushes of
the last collector are connected with the line or external circuit). If more than two
collectors are employed, there is more than one situated (on the shaft) on the same
side of the armature. In this case the wire leading to the collectors which are furthest
from the armature, pass underneath the segments of the collectors which are nearest
to the armature, for instance in a canal. or groove formed in the interior of the axle,
or in a space left between the axle and the collectors. The segments of the different
circuits overlap each other.
If the machine has two collectors and two armature circuits, as illustrated by Fig. 2,
the armature is divided into an even number of segments, of which the first, third,
fifth, etc. segments are connected with corresponding segments of the first collector,
while the second, fourth, sixth etc. segments are connected with corresponding
segments of the second collector.
In this figure the even segments are indicated by strong lines and connected with
the right hand collector, while the odd segments are indicated by dotted lines and
connected with the left hand collector. Our new. method of insulation consists in
separating from each other the different segments or the different portions of the
induced circuits or of the inducing circuit of a dynamo-machine by insulating material,
such as vulcanised fibre, or better, mica (in Fig. 2, two layers of wire are separated
from each other by a sheet of insulating material shown in full lines) and separating
from each other the wires of the same layer by means of a fine insulating substance,
such as silk packing (which is indicated in the drawing by dotted lines).

page_text: The whole arrangement has for its object to completely insulate from each other, both
from an electrical and from a thermal point of view, such portions of wire as are
subjected to considerable differences of tension, or differences that would be excessive
for the insulating media with which the wires are normally covered.
Having now particularly described the nature of our invention, and in what manner
the same may be performed, we declare, that we claim.
1. The described method of winding and insulating, for the purpose of facilitating
the use of high tension currents.
2. The method of collecting these currents by several collectors placed in series.
3. In a dynamo-machine, the combination of a drum-armature divided into an even
number of segments insulated from each other, with one or more pairs of collectors
situated on both sides of the armature, said collectors being connected with corre-
sponding segments of the armature and also in series with each other.
ديم
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