Year: 1885

page_text: I PETER WILLIAM WILLANS of Thames Ditton in the County of Surrey Engineer
do hereby declare the nature of this invention to be as follows:-
I construct the crank chamber or base plate of the engine in such manner that
it forms also the base plate for the dynamo.
The portion of the frame of the machine which supports the magnets of the'
dynamo I make in an oval or oblong form with a flange at the bottom by which it
can be bolted down on any suitable bed. This flange does not extend under the
magnets so that there is no iron under them. At each of its ends I form a recess
to receive a bearing for the armature shaft. Extending out from one end of the
frame I also form the crank chamber of the steam engine, and this crank chamber
has at its outer end the usual recess to receive a bearing concentric with the other
two bearings above mentioned. In the three bearings I mount a shaft which serves'
both as the armature shaft of the dynamo and as the crank shaft of the engine-
or else if the shafts are separate I make them so that they can readily be coupled
one to the other in one straight line. Where the engine has two or more cranks.
there may also be intermediate bearings in the crank chamber. The three recesses
are all bored at one setting in a boring machine.
The field magnets of the dynamo which are assumed to be of a type in which
the magnets extend on each side of the armature are supported by preference by'
extensions of the yoke pieces being secured to lugs on the two sides of the frame.
These extensions of the yoke pieces are fitted with set screws or bolts in such way
that the height of the field magnets can be varied as the bearings of the engine or
armature spindle wear.

page_text: Improvements in Steam Engines and Dynamo Electrical
Machines.
I PETER WILLIAM WILLANS of 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:
-
I construct the crank chamber or base-plate of the, engine in such manner that
it forms also the base plate for the dynamo.
The portion of the frame of the machine which supports. the magnets of the
dynamo I make in an oval or oblong form with a flange at the bottom by which it
can be bolted down on any suitable bed. This flange does not extend under the
magnets so that there is no iron under them. At each of its ends I form a recess
to receive a bearing for the armature shaft. Extending out from one end of the
frame I also form the crank chamber of the steam engine, and this crank chamber
has at its outer end the usual recess to receive a bearing concentric with the
other two bearings above mentioned. In the three bearings I mount a shaft which
serves both as the armature shaft of the dynamo and as the crank shaft of the
engine or else if the shafts are separate I make them so that they can readily be
coupled one to the other in one straight line. Where the engine has two or more
cranks there may also be intermediate bearings in the crank chamber. The three
recesses may be bored at one setting in a boring machine:
The field magnets of the dynamo when of a type in which the magnets extend
on each side of the armature are supported by preference by extensions of the yoke
pieces resting upon and being secured to the top of the two sides of the frame, or
when vertical magnets are used they may be carried by projections from the pole
pieces resting upon these flanges.
The Drawings annexed show various views of combined steam engine and
dynamo electrical machines formed in the above manner.
Figures 1. 2 and 3 show various views of a machine the magnets of which are
horizontal.
Figure 4 shows a machine in which the magnets are vertical.
Figure 1 is a side elevation with the frame at the dynamo end of the machine in:
section. Figure 2 is a plan view with the magnet coils removed in order that the
method of attaching the magnets to the frame may be better seen. Figure 3 is a
vertical cross section through the dynamo end of the machine.
Figure 4 is a vertical cross section through the dynamo end of a similar machine
in which vertical magnets are used.
In Figures 1. 2 and 3 A is the base plate or frame one end of which is composed
of an oblong ring within which the dynamo portion of the machine is contained
whilst the other end forms the closed crank chamber of a steam engine for driving
the dynamo. The oblong ring is formed with an inner flange A₁ and the crank
chamber with outward projections at the bottom by which the frame is bolted down
on to a suitable bed by bolts passing through these flanges. The steam cylinders
which are bolted down on to the top of the crank chamber and the other parts of
:

page_text: the steam engine are not shown in the drawing-B. B. are manholes in the side of
the crank chamber-their covers can be removed to give access to the interior
of the chamber.
A hole is bored through each end of the crank chamber to receive the bearings
of the crank shaft C. A third hole is bored in the opposite end of the oblong ring
to carry a third bearing for the shaft. All the holes are in a line with one another
and as before stated can all be bored at one setting in a boring machine.
The bars D of which the magnet pole pieces are shown to be composed pass across
from one side of the oblong frame to the other-they are connected at their ends
to bars E which rest at their ends on the top of the two sides of the frame. The
side of the frame below the remainder of the bars E being depressed as shown in
Figure 1 to give room for the ends of the bars D and for the heads of the bolts by
which the bars D are retained. Then filling pieces may be inserted below the
bars E which can be subsequently removed as the bearings of the shafts C wear.
F. F. are the magnet coils. The revolving armature may be formed in any of the
usual ways such as the Siemens or Crompton armatures.
In the machine shown at Figure 4 the frame is as in the machine just described
formed with a crank chamber for the steam engine at one end and carries the
magnet pole pieces at the other end.
A is the frame. B. B are the magnet pole pieces, these have bolted to them
brackets C, which rest upon the top of the sides of the frame A and are bolted
down to it these brackets are of gun metal or other non-magnetic metal.
The top flange of the frame to which the brackets are bolted is turned outwards
as shown in order to bring the bolts into a favorable position for sustaining the
magnets when the yoke piece D is temporarily removed.
In machines of the above construction the ring end of the frame may be of smaller
dimensions than in the machine shown at Figures 1. 2 and 3 and its sides may be
closer together.
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. Making the bed or frame of a combined dynamo electrical machine and steam
engine in such a manner as to form at one end a chamber or tank to serve as the
closed crank chamber of a quick running steam engine and at the other end to
carry a dynamo electrical machine substantially as described.
2. The construction of combined steam engines and dynamo electrical machines
substantially in the manner herein before described with reference to Figures 1. 2
and 3 of the drawings annexed.
3. The construction of combined steam engines and dynamo electrical machines
substantially in the manner herein before described with reference to Figure 4 of
the drawings annexed.