IMPROVEMENTS IN DYNAMO-ELECTRIC AND MAGNETO-ELECTRIC MACHINES
Year: 1884

page_text: I ARON NICOLAUS THORIN, of Appelbergsgatan, N° 58 B, Stockholm, Sweden,
Mechanic do hereby declare the nature of said Invention for "IMPROVEMENTS
IN DYNAMO-ELECTRIC AND MAGNETO-ELECTRIC MACHINES" and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
This Invention relates to dynamo and magneto electric machines and consists
essentially in the novel construction and arrangement of the armature as hereinafter
described.
In the accompanying Drawing
Figure 1 is a side elevation of the improved machine and
Figure 2 is an end view of the same.
Figure 3 is a sectional elevation of the armature detached.
Figure 4 illustrates the method of winding the armature.
A indicates the bed plate of the machine and B the frame which supports the
electro-magnets C and carries one bearing of the armature shaft D. The other
bearing of the shaft is carried by the bracket E, on which also the brush-holders F
are secured. G indicates the driving pulley of the machine.
On the shaft D are two metal flanges or collars H I and the collars K L, M
and N of ebony or other suitable material. The collars K and L support the
commutator strips O and insulate the same, from one another. The said strips are
secured in place partly by a flange k on the ring K. and partly by the metallic
rings P insulated from the strips O by the rings p.
The said shaft D also carries a metallic ring Q, which, together with the rings H
N and M, serve to hold between them the wire of the armature. The said rings
are held together by screws R and S.
Where the armature wire is clamped by the plates M and Q it is surrounded by
a piece of insulating material X.
Figure 4 shows a method of winding the armature, which, as here shown,
consists of several rings or coils T of insulated wire. Each coil T consists of two
layers of wire placed one upon the other the said layers being fastened together
by bands or the like at suitable distances apart.
These coils or rings are arranged as shown in Figure 4 so as to lie partially one
upon the other. The coils are held together partly by a band u or the like
D

page_text: twisted upon the same and partly by a ring v.
The several coils are connected
as shown in Figure 4 or in any other suitable manner.
The armature ring is secured on the shaft as shown in Figure 3 and connected
with the pieces () of the commutator.
When an armature constructed in this manner is placed and made to turn,
between stationary magnets, as shown in Figure 1, the current is generated in
the usual manner.
The method of winding the armature ring can be varied without departing
from the nature of this Invention thus, for instance, the rings or coils may be
made oval, polygonal or of other suitable shape. It is also evident that the coils
of the armature ring may be caused to lie more or less one upon another and that
each coil may be composed of several layers of wire placed one upon another as
described, or be wound in more or less turns one outside the other. The armature
ring can also be made by first winding the wire into the form of a spiral or helix
which is afterwards flattened and then bent, to a circular form, whereby an
armature is obtained similar to that shown in Figure 4, with the difference that
each coil contains but one turn of wire. The said coils may be divided into any
desired number of sections each of which is connected to the commutator. The
armature ring may be provided on the exterior edge with a covering of wood,
metal, or other suitable material.
It is evident that the arrangement of the machine itself might, independently
of the armature, vary; thus, for instance, more or less stationary magnets may
be employed, in which case the number of commutator brushes is made to
correspond.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
First. The armature of a dynamo or magneto electric machine constructed
substantially as hereinbefore described with reference to Figure 4 of the Drawing,
and comprising a number of coils of insulated wire, wound in the form of a ring,
oval, polygon or in other suitable shape, which coils are placed more or less one
upon another.
Second. The armature ring secured to the shaft by the rings M N HQ of metal
or other suitable material, substantially as described with reference to Figure 3
of the Drawing.
ML 1004.