Improvements in Combined Steam Engines and Dynamo Electric Machines.
Year: 1888

page_text: Date of Application, 19th Oct., 1888
Complete Specification Left, 17th July, 1889-Accepted, 28th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Combined Steam Engines and Dynamo Electric
Machines.
We, JOHN GWYNNE, of 89 Cannon Street, in the City of London, Engineer, and
CHARLES FRIEND COOPER, of European Works, Pownall Road, Dalston, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
;-
This invention has reference to improvements in the combination of steam engines
with dynamo electric machines. In applying it to a vertical engine the bed plate of
the engine is made to form one pole of the dynamo and an extension from the frame
or cylinder the other pole.
This extension is wound with wire and the armature which is keyed on the crank-
shaft is arranged to work in close proximity to the bedplate on one side and to the
extension on the other, the magnetic circuit being completed from pole to pole through
the armature. The invention is applicable also in connection with horizontal engines;
in which one or more extensions from the bedplate are made to form the poles one or
both being wound with wire as the case may be.
Dated this 18th day of Ontabon 1000
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Combined Steam Engines and Dynamo Electric
Machines.
We, JOHN GWYNNE, of 89 Cannon Street, in the City of London, Engineer, and
CHARLES FRIEND COOPER, of European Works, Pownall Road, Dalston, in the County
of Middlesex, Engineer, 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 invention has reference to improvements in the combination of steam engines
with dynamo-electric machines. In applying it to a vertical engine the bed-plate of
the engine is made to form one pole of the dynamo and an extension from the frame
or cylinder another pole. This extension is wound with wire and the armature which
is keyed on the crankshaft is arranged to work in close proximity to the bed-plate on
one side and to the extension on the other, the magnetic circuit being completed
from pole to pole through the armature. The invention is applicable also in con-
nection with horizontal engines in which one or more extensions from the bed plate
are made to form the poles one or both being wound with wire as the case may be.
Referring to the accompanying three sheets of drawings
Fig. 1 is a sectional elevation on line C D Fig. 2 and Fig. 2 a sectional plan on the
line A B Fig. 1 illustrating a vertical steam engine combined with a dynamo electric
machine in accordance with this invention. Figs. 3, 4, 5 & 6 illustrate modified
arrangements hereinafter referred to.
Referring to Figs. 1 and 2, 1 is the bed-plate of the engine the right hand end
portion 2 of which serves as one pole of a field magnet, 3 is a downward extension
secured to a lateral extension of the engine cylinder 4; it serves as a core for the field
magnet coil and constitutes the other field magnet pole or winding 5. This coil or
winding may be wound on a loose bobbin that can be slipped over and secured upon
the extension 3 before this extension is secured in place. 6 is an armature fixed upon
ΓΣ

page_text: a crank shaft 7 that is mounted to revolve in bearings carried by the engine framing 8.
The armature is arranged to revolve between, the part 2 of the bed-plate and the
extension 3 which together with the cylinder, and engine framing constitute a field
magnet that becomes excited. upon the passage, of an electric current through the coil
or winding 5, the magnetic, circuit being, completed through the armature:
' is a
commutator secured to the outer side of the armature and provided with a brush
holder 10that is adjustably connected to a bracket 11 secured to the bedplate of the
engine. This brush holder is not shewn in Fig. 2. The crank shaft may be provided
with a fly wheel as shown and, is driven in the ordinary manner by. a piston within the
cylinder 4. 12 is one of two guards or shields of non-magnetic material secured to
the bed plate and arranged one at each side of the armature.
"
In Figs. 3 & 4 which are respectively a sectional elevation on the line A B Fig. 4,
and a sectional plan on the line CD Fig. 3, the commutator 9 is arranged at the inner
side of the armature, and the brush holder is adjustably connected to the bedplate
whilst the right hand end of the crank shaft is supported by a bearing carried by a
bracket 12*. In other respects the arrangement of combined engine and dynamo is
similar to that shown in Figs. 1 & 2 and is correspondingly figured.
Fig. 5 is a sectional elevation on the line CD Fig. 6 and Fig. 6 a sectional plan
on the line A B Fig. 5 illustrating a combined engine and dynamo similar to that
shown in Figs. 3 & 4 except that the engine is arranged to work as a horizontal
engine, the other parts being correspondingly arranged as shown.
It will be obvious that when the dynamo is to have more than two poles the
additional poles may consist of extensions formed in one with or secured to the frame
of the engine and each carrying an exciting coil or bobbin.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. The combination and arrangement of a steam engine and dynamo electric
machine in which the frame of the engine is made to form part of the electro
magnet of the dynamo, the bed plate forming one pole and an extension from the
frame or cylinder of the engine another pole.
2. The several arrangements respectively shewn in and described with reference
to sheet 1, to sheet 2 and to sheet 3 of the drawings annexed, of a steam engine
and dynamo electric machine combined in such a manner that the frame of the
engine is made to form part of the electro magnet of the dynamo the bed plate
forming one pole and an extension from the frame or cylinder of the engine the
other pole.
Dotad this 17th day of July 1980
JOHN GWYNNE.
CHARLES FRIEND COOPER.
W. Lloyd. Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.