Year: 1887

page_text: Date of Application, 10th Jan., 1887
Complete Left, 6th Oct., 1887
Complete Accepted, 8th Nov., 1887
We, CARL ZIPERNOWSKI, MAX DERI and OTTO TITUS BLATHY, all of Budapest in
the Empire of Austria, Engineers, do hereby declare the nature of this invention to
be as follows:-
This Specification relates to improvements in the construction of induction coils or
transformers designed on the principles laid down in our Specification 1885, No. 5201.
We have found that to attain the best possible efficiency with transformers with an
iron core of ring or oval or polygonal shape closed upon itself, this core instead of
being made of iron wire should preferably be made out of narrow and very thin iron
ribbon. The iron ribbon is coiled on a suitable form or dise, and subjected during
coiling to a considerable pull for insuring complete filling out of the volume at
disposal. Preferably a ribbon of insulating material (paper, tape or the like) of about
equal breadth with the iron, is coiled up together with it, thus insulating the con-
secutive layers of iron from one another. The ends of the iron ribbon are secured
by soldering or riveting to the adjacent layers. In this manner an elementary ring
or disc of iron ribbon is produced. A suitable number of such discs are superposed
to constitute the core of the induction coil, preferably with an insulating sheet (paper
or other suitable tissue) interposed between each two adjacent elements. A core built
up in this manner is shown in figures 1 and 2 of the accompanying drawings. The
coiling of a sheet of iron of suitable breadth to form in one piece the whole of the
core, will not answer the same purpose, as such a wide strip of iron cannot be manu-
factured of the same degree of thinness as a narrow ribbon, and the Foucault current
in a broad strip will consume much more energy than in a number of small ones.
The iron ribbon should be about 0.02 inches thick and from to of an inch in
breadth, but the dimensions vary according to circumstances.
The second part of this invention relates to different modes for facilitating the
coiling of the copper conductors in transformers described in the above mentioned
Specification and referred to in Claims 2 and 3 thereof, that is to say, consisting of a
circular, oval or polygonal coil composed of the primary and secondary conductors,
these being to the greater part enclosed by iron sheets of a suitable form. To facilitaté
the winding of the coil and avoiding the necessity of passing the copper wires through

page_text: the openings formed in the iron sheets, we provide in the sheet a, Figure 3 of the
drawings, narrow slits such as c, through which the copper wires can be introduced
sideways into the opening 6 intended to hold them. Or, there may be iron sheets of
the form indicated in figure 4, the wide openings, after winding on the coils, being
filled up with suitable pieces of sheet iron. In figure 5 there is shown yet another
arrangement for accomplishing the same object. There is a core composed of double
Tshaped sheet iron pieces a, upon the middle part of which the coils are wound into
the space b, whereupon the whole is put into a closely fitting outer shell which is
also made up out of superposed sheet iron rings. The external form as well as the
meeting surfaces of the inner core and of the shell may be of cylindrical, conical,
prismatical, or pyramidal shape. Figure 6 is a plan showing the exterior appearance
of a transformer made according to figure 3, 4 or 5 a denoting sheet iron and the
copper coil. The last described arrangement may also be executed in multipolar form,
the innner core having a star shaped form, each spoke being wound with a coil of
copper wire, the external shell being made to fit closely upon the several arms.
C
In all these forms of transformers the sheets of iron may or may not be insulated
from one another by a suitable insulating material.
D: 10th J
Ր I 1907

page_text: We, CARL ZIPERNOWSKI, MAX DERI, and OTTO TITUS BLATHY, all of Budapest
in the Empire of Austria, Engineers 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 specification relates to improvements in the construction of induction coils or
transformers designed on the principles laid down in our specification No. 5201,
of 1885.
We have found that to attain the best possible efficiency with transformers with an
iron core of ring or oval or polygonal shape closed upon itself, this core instead of
being made of iron wire should preferably be made out of narrow and very thin iron
ribbon. The iron ribbon is coiled on a suitable form or disc and subjected, during
coiling to a considerable pull for insuring complete filling out of the volume at
disposal. Preferably a ribbon of insulating material (paper tape or the like) of
about equal breadth with the iron, is coiled up together with it, thus insulating
the consecutive layers of iron from one another. The ends of the iron ribbon are
secured by soldering or riveting to the adjacent layers. In this manner an elementary
ring or disc of iron ribbon is produced. A suitable number of such discs are super-
posed to constitute the core of the induction coil, preferably with an insulating sheet
(paper or other suitable tissue) interposed between each two adjacent elements.
core built up in this manner is shown in Fig. 1 and 2, of the drawings accompanying
our Provisional Specification filed 10th Jany. 1887. The coiling of a sheet of iron of
suitable breadth to form in one piece the whole of the core, will not answer the same
purpose, as such a wide strip of iron cannot be manufactured of the same degree of
thinness as a narrow ribbon, and the Foucault current in a broad strip will consume
much more energy than in a number of small ones. The iron ribbon should be about
0.02 inches thick and from to of an inch in breadth, but the dimensions vary
according to circumstances.
A
The second part of this invention relates to different modes for facilitating the
coiling of the copper conductors in transformers described in the above mentioned
Specification and referred to in claims 2 and 3 thereof, that is to say, consisting of a
circular, oval or polygonal coil composed of the primary and secondary conductors,
these being to the greater part enclosed by iron sheets of a suitable form. To facilitate
the winding of the coil and avoiding the necessity of passing the copper wires through
the openings formed in the iron sheets, we provide in the sheet a, Fig. 3 of the
drawings, narrow slits such as c through which the copper wires can be introduced
sideways into the opening b.intended to hold them. Or there may be iron sheets of
the form indicated in Fig. 4. the wide openings, after winding on the coils, being filled
up with suitable pieces e of sheet iron. In Fig. 5 there is shown yet another arrange-
ment for accomplishing the same object. There is a core composed of double T shaped
sheet iron pieces a upon the middle part of which the coils are wound into the space b

page_text: whereupon the whole is put into a closely fitting outer shell c which is also made up
of superposed sheet iron rings. The external form as well as the meeting surfaces of
the inner core and of the shell may be of cylindrical, conical, prismatical or pyramidal
shape. Fig. 6 is a plan showing the exterior appearance of a transformer made
according to Fig. 3, 4 or 5-a denoting sheet iron and the copper coil. The last
described arrangement may also be executed in multipolar form the inner core being
of a star shape and each spoke being wound with a coil of copper wires, while the
external shell is made to fit closely upon the several arms.
In all these forms of transformers the sheets of iron may or may not be insulated
from one another by a suitable insulating material.
Having now particularly described and ascertained the nature of our invention and
in what manner the same is to be performed we declare that what we claim is :-
:-
1. In induction coils or transformers having a circular or oval or polygonal iron
core closed upon itself, the construction of the iron core out of a suitable number of
rings or discs obtained by the spirally coiling upon itself of narrow and very thin
iron ribbon substantially as set forth and described with reference to Figs. 1 and 2 of
the drawings.
2. The construction of induction coils or transformers as herein described with
reference to Figs. 34, 5 and 6 of the drawings wherein a coil of the inducing and
induced wires is surrounded with iron sheet constructed and arranged in such a manner
as to facilitate the winding of the conductors substantially as set forth.
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ABEL & IMRAY,
Agents for the Applicants.
ABEL & IMRAY,
Agents for the Applicants.