Improvements in Electro-locomotives.
Year: 1890

page_text: Date of Application, 8th Mar., 1890
Complete Specification Left, 1st Dec., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Electro-locomotives.
I JOHN HOPKINSON F.R.S. of Westminster Chambers 5 Victoria Street in the
City of Westminster do hereby declare the nature of this invention to be as
follows :-
In electro locomotives it is desirable when the dynamo armature or armatures is or
are on the running axles that the armature or arinatures be as large in diameter as
possible. This I accomplish by using a four pole dynamo machine with the magnets
arranged horizontally. When there are armatures on two adjacent axles I prefer to
extend the magnets across from one armature to the other and in front of and
behind the armatures. A similar arrangement may be used when there are three or
more adjacent axles. In this way power may be conveniently applied to the axles of
a bogey electro locomotive. The inagnets may be suspended from the frame by
springs to relieve the weight from the journals by which the axles are connected to
the magnets.
COMPLETE SPECIFICATION.
Improvements in Electro-locomotives.
I JOHN HOPKINSON F.RS. of Westminster Chambers 5 Victoria Street in the
City of Westminster do hereby declare the nature of my said invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
A
In electro-locomotives when the dynamo armature or armatures is, or are, on the
running axle or running axles it is desirable that the armature, or armatures be as
large as possible. This I accomplish according to my invention by using a four pole
dynamo inachine with the magnets arranged horizontally. When there are armatures
on two adjacent axles I prefer to extend the magnets across from one armature to the
other as well as in front of, and behind, or at the outer sides of, the armatures.
similar arrangement may be used when there are three, or more, adjacent axles and
armatures; that is, the magnets, between each two adjacent armatures, are extended
from one, to the other, of such arinatures, and in front of, and behind, or at the
outer sides of, the end armatures. In this way power may be conveniently applied
to the axles of a bogey electro-locomotive. The ragnets may be suspended, or
supported, from the frame by a spring, or by springs, to relieve the axle, or axles, of
tho weight, or part of the weight, of the magnets and their adjuncts.
Figure 1 is a side elevation of a notor arranged according to this invention for a
single axle and Figure 3 is a side elevation of two motors arranged according to this
invention for a pair of axles. Figure 2 is an end elevation answering for either of
these arrangements. In all the figures a, represents the foot-plate of the locomotive
and b the axles. In the drawings the bearings for the axles are not shown; the
axles being shewn broken away at the parts which run in the said bearings. The
armatures B, with their commutators are keyed onto the running axlos b. The
magnets C, C, are arranged with four poles c, c, and are placed horizontally, so as to
adinit armatures of inaximum diameter.
A set of magnets constitutes a rigid system, being connected by brackets D, of
brass, or other non-magnetic material carrying bearings d through which the axle
passes. The weight, or part of the weight, of the magnets and their adjuncts, may

page_text: be carried from the foot plate by springs, or a spring, such as is shown at d', and a
link e to which the magnets are hinged in the arrangement for a single axle, Figure 1;
or by a spring, or springs, as at d¹, d, at either end in the arrangiment for a pair of
nxles, Figure 3.
The springs are shewn as being carried on centered carrying rods d², and as being
under compression but if desired the said springs may be used as suspen-ling sp ings
in tension.
Having now particularly described and ascertained the nature of my said in von-
tion and in what manner the same is to be performed I declare that what, I
claim is :-
1. In an electro-locomotive the combination of an armature, or arinatures, on the
running axle, or runnning axles, and four-pole magnets arranged horizontally;
substantially as, and for the--purpose, hereinbefore described with reference to the
accompanying drawings.,
'
2. In an electro-locomotive the combination of an armature, or armatures, on the
running axle, or running axles, and four-pole magnets, arranged horizontally, and
connected together, and supported; or suspended, by springs; as hereinbefore.
described.
3. In an electro-locomotive the arrangement as hereinbefore described, and shewn
in Figures 1 and 2 of the accompanying drawings.
+
4. In an electro-locomotive the arrangement as herein before.described, and shown
in Figures 3 and 2 of the accoinpanying drawings.
14
Dated 1 of day 1800.
141
JH. JOHNSON & Co.,
--Agents.