Improvements in Combining Steam Engines with Dynamo Electric and other Machines Driven Directly by them.
Year: 1886

page_text: Date of Application, 15th Oct., 1886
Complete Left, 15th July, 1887
Complete Accepted, 6th Sept., 1887.
Improvements in Combining Steam Engines with Dynamo Electric
and other Machines Driven Directly by them.
1, PETER WILLIAM WILLANS, of the Ferry Works, Thames Ditton in the County
of Surrey, Engineer do hereby declare the nature of this invention to be as follows :-
-
This invention has for its object a method of mounting engines with enclosed crank
chambers, in combination with dynamo electric or other rotative machines, such as
fans, or centrifugal pumps, the rotating portion of which can conveniently be mounted
upon or directly coupled to a prolongation of the engine crank shaft.
The crank chamber of the engine is divided horizontally in the plane of the axis of
the crank shaft, the two parts of the crank chamber being joined by flanges with studs
and nuts or other suitable fastenings. The lower portion of the crank chamber which
contains the lower portions of the bearings of the crank shaft has an extension at one
or both ends for supporting the attached dynamo electric machine, fan or other
rotative machine or machines driven by the engine.
The bearings carried by such extension are also divided in the plane of the centre
of the crank shaft, or are otherwise arranged so that they can be removed when the
crank shaft is lifted, and can be bored with the engine bearings. The attached machine
is also so arranged (as by a horizontal division in the casing of a pump or fan, or by
a corresponding means of detaching the magnets of a dynamo) that the upper part
can be unfastened and lifted off. When the upper part of the crank chamber, and the
upper part of the driven machine, are both removed, the crank shaft, and the attached
rotative portion of the machine (such as the armature of a dynamo, or the fan of a
pump or blower) are easily accessible and can be lifted out together without requiring
space at the end of the machine for drawing out the shaft lengthwise.
DL: 111 1
1000
CARPMAEL & Co.,
Agents for the Applicant.

page_text: Improvements in Combining Steam Engines with Dynamo Electric
and other Machines Driven Directly by them.
I, PETER WILLIAM WILLANS of the Ferry Works, Thames Ditton in the County
of Surrey, 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 for its object a method of mounting engines with enclosed crank 5
chambers, in combination with dynamo electric or other rotative machines, such as
fans, or centrifugal pumps, the rotating portion of which can conveniently be mounted
upon or directly coupled to a prolongation of the engine crank shaft.
The crank chamber of the engine is divided horizontally in the plane of the axis of
the crank shaft, the two parts of the crank-chamber being joined by flanges with studs
and nuts or other suitable fastenings. The lower portion of the crank chamber which
contains the lower portions of the bearings of the crank shaft has an extension at one
or both ends for supporting the attached dynamo electric machine, fan or other rotative
machine or machines driven by the engine. The bearings carried by such extension
are also divided in the plane of the centre of the crank shaft, or are otherwise arranged
so that they can be removed when the crank shaft is lifted and can be bored with the
engine bearings. The attached machine is also so arranged (as by a horizontal
division in the casing of a pump or fan, or by a corresponding means of detaching the
magnets of a dynamo) that the upper part can be unfastened and lifted off. When
the upper part of the crank chamber, and the upper part of the driven machine, are
both removed, the crank shaft, and the attached rotative portion of the machine (such
as the armature of a dynamo, or the fan of a pump or blower) are easily accessible and
can be lifted out together without requiring space at the end of the machine for
drawing out the shaft lengthwise.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
Figure 1 is a side elevation of a combined steam engine and dynamo electric
machine constructed in accordance with my invention.
Figure 2 is a plan of the same.
Figure 3 is a transverse section through extensions of the crank chamber and the
lower part of the field magnet.
Figure 4 is a longitudinal and vertical section to a larger scale of the parts of the
crank chamber and extensions together with the crank shaft, armature and fly wheel.
Figure 5 is a transverse vertical section through parts of the crank chamber.

page_text: A is the upper and B the lower part of the crank chamber; it is divided horizontally
in the plane of the axis of the crank shaft. The part B is cast with extensions C Č
which carry the magnets D D and also the dynamo bearing E. F is the crank shaft
with its crank at FT and it has bearings at B¹ B' in the part B. A thrust on the
crank shaft is always exerted in a downward direction whilst the engine is at work
so that it is only necessary to provide brasses on the under part of each bearing.
G is the armature, and H is the fly wheel.
After removing the nuts the upper part of the crank chamber can be lifted off.
The magnets can also be lifted off separately by withdrawing the studs or bolts f, f,
(figure 3) the yoke-piece m being first removed. The crank-shaft and armature are
now completely exposed for inspection, and on removing the studs or bolts e, e, they can
be lifted out together, with the bearing E still in place on the shaft. Or the bearing E
can be made in two halves, and the upper part or cap only removed. The fly-wheel
can be lifted out with the armature spindle, or it can be removed previously. It is
not necessary that the fly-wheel should be in the position shown-it may be at the
other end of the engine, or between the engine and dynamo, the frame being suitably
shaped to receive it. The crank-shaft and armature spindle are shown in one piece
(or with the connection between them inside the crank-chamber)-they may however
be separated by a rigid coupling between the engine and dynamo. The brackets 1, 1,
supporting the magnets D are of gun metal or other non-magnetic metal.
It is obvious that if the armature is sufficiently short and light, the end bearing E
may be dispensed with, and the side extensions of the crank-chamber CC need only
be carried far enough to support the magnets. The brush-holder may in that case
be attached to and carried by the magnets.
It is obvious that instead of the magnets of a dynamo electric machine the framing
of a centrifugal pump, or of a fan may be carried by an extension of the sides of the
crank chamber, in the manner described, the disc of the pump or fan taking the
place of the armature of the dynamo machine.
In the case of a pump for liquids the spindle, on the side nearest to the engine,
would require to enter the pump casing through a stuffing box, and the bearing E
must either he enclosed within the casing, or it must be divided horizontally and its
upper portion attached to or in close contact with the upper portion of the casing.
The pump or fan casing must be divided horizontally in such manner that the upper
part can be lifted off to allow of the removal of the crank-shaft and disc either
together or separately. If the weight of the disc allows, the end bearing E may be
dispensed with, and the side extensions CC limited accordingly.
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 :-
1. A steam engine with its crank chamber divided horizontally in the plane of the
axis of the crank shaft into two parts of which the lower contains the lower portions
of the bearings of the crank shaft and has an extension or extensions supporting the
stationary parts of a dynamo electric or other machine whilst the crank shaft carries
or is directly coupled with the armature or rotating part all substantially as described
and so that when the upper part of the crank chamber and the upper part of the
driven machine are both removed the crank shaft and the attached rotative portion
of the machine are accessible and can be lifted out together.
2. My improvements substantially as described in combining steam engines with
dynamo-electric and other machines driven directly by them.
Dated this 15th day of Tule 1907
CARPMAEL & Co.,
Agents for the Applicant.