Improvements in Dynamo Electrical Machines in Combination with
Year: 1887

page_text: Date of Application, 26th Mar., 1887
Complete Left, 20th Dec., 1887
Complete Accepted, 27th Jan.,
1888
[Communicated from abroad by THE FIRM OF SIEMENS AND HALSKE, of 94, Markgrafen
Strasse, Berlin, in the Empire of Germany, Electrical Engineers.]
Improvements in Dynamo Electrical Machines in Combination with
I, CHARLES DENTON ABEL of 28 Southampton Buildings, Chancery Lane in the
County of Middlesex, Consulting Engineer and Patent Agent, do hereby declare the
nature of this invention to be as follows:-
In the arrangements heretofore employed for driving dynamo electrical inachines
directly from motor engines, such machines have always been constructed complete in
themselves, the axis of the revolving armature being placed in line with the engine
shaft and coupled thereto by a rigid or flexible coupling. This arrangement necessitates
the placing in line of the two shafts with numerous bearings, and any want of accuracy
in the adjustment of these parts may lead to detrimental action, in addition to which
the arrangement occupies a great deal of space, and increases the price of the
installation.
The present invention has for its object to obviate these defects and consists in con-
structing the dynamo machine in such a manner that instead of its being complete in
itself, some part or parts thereof also form part or parts of the motor engine that
drives the same.
For this purpose the framing carrying the field magnets instead of
being mounted on a base of its own is fixed to a convenient part of the framing of the
motor engine, and the revolving armature, of whatever kind it may be, instead of
being mounted on its own spindle, is mounted on an overhanging end of the engine
Price RdT

page_text: shaft, in the same way that fly wheels or driving pullies are mounted thercon so that
not only the separate armature spindle but also all special bearings for the same are
dispensed with.
The commutator brushes are carried by a bracket fixed either on the framing of the
field magnets or to the engine framing.
Thus the mechanical connection between the field magnets and the armature is
effected through the framing and bearings of the motor engine so that the two
practically constitute one machine.
The overhanging end of the engine shaft need not necessarily be formed in one
piece with the latter but may be connected rigidly thereto and the outer end may or
may not be supported by an additional bearing carried either by a bracket from the
engine frame or by the framing of the field magnets.

page_text: COMPLETE SPECIFICATION.
Improvements in Dynamo Electrical Machines in Combination with
Motor Engines.
I, CHARLES DENTON ABEL of No. 28 Southampton Buildings, Chancery Lane in the
County of Middlesex, Consulting Engineer and Patent Agent 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 :-
In the arrangements heretofore employed for driving dynamo electrical machines
directly from motor engines such machines have always been constructed complete in
themselves, the axis of the revolving armature being placed in line with the engine
shaft and coupled thereto by a rigid or flexible coupling.
necessitates the placing in line of the two shafts with numerous bearings, and any
This arrangement
want of accuracy in the adjustment of these parts may lead to detrimental action, in
addition to which the arrangement occupies a great deal of space and increases the
price of the installation.
The present invention has for its object to obviate these defects and consists in con-
structing the dynamo machine in such a manner that instead of its being complete in
itself some part or parts thereof also form part or parts of the motor engine that drives
the same. For this purpose the framing carrying the field magnets instead of being
mounted on a base of its own is fixed to a convenient part of the framing of the motor
engine, and the revolving armature, of whatever kind it may be, instead of being
mounted on its own spindle, is mounted on an overhanging end of the engine shaft, in
the same way that fly wheels or driving pullies are mounted thereon so that not
only the armature spindle but also all special bearings for the same are dispensed
with.
The commutator brushes are carried by a bracket fixed either on the framing of the
field magnets or to the engine framing.
Thus the mechanical connection between the field magnets and the armature is
effected through the framing and bearings of the motor engine, so that the two
practically constitute one machine.
The overhanging end of the engine shaft need not necessarily be formed in one
piece with the latter but may be connected rigidly thereto and the outer end may or
may not be supported by an additional bearing carried either by a bracket from the
engine frame or by the framing of the field magnets.
The above described invention can be carried out in combination with machines of
various types. Figs. 1, 2 and 3 shew by way of example diagramn sections of three
uch arrangements, Fig. 1 shews the arrangement in connection with a dynamo
machine with internal field magnets A such as have been described in the specification
o Patent No. 1738 of 1887 the field magnets being fixed to the framing B of the
notor engine while the armature C is carried by the shaft D of the engine, and the
ominutator brushes E by a bracket F on the engine frame.

page_text: Fig. 2 shews the arrangement with a flat ring armature C between two sets of field
magnets A the frame G of which is carried by the engine framing B in the manner
shewn and carries the commutator brushes.
Fig. 3 shews a dynamo with cylindrical armature C, the field magnets A being
again carried by a frame G fixed to the engine framing and carrying the bracket F of
the commutator brushes.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. The combination of a dynamo electric machine with a motor engine in such a
manner that the revolving arinature is carried by the engine shaft or by an
extension thereof while the field magnets are carried either directly or indirectly by
the framing of the engine substantially as herein described.
2. In combined motor engines and dynamo electric machines such as are referred to
in the preceding claim mounting the armature upon an overhanging end of the engine
shaft substantially as herein described.
ABEL & IMRAY,
Agents for the Applicant.