IMPROVEMENTS IN DYNAMO ELECTRIC MACHINES
Year: 1884

page_text: I, SAMUEL WILLIAMS, of 185 Commercial Road, Nowport in the County of
Monmouth, Inventor & Patentee, do hereby declare the nature of my invention
for IMPROVEMENTS IN DYNAMO ELECTRIC MACHINES to be as follows:-
I prepare a rectangular flat hollow frame of steel rods or other strong material
bolted at the corners The ends of the rods at one side are arranged for unhinging
and the frame is mounted for rotation. On this frame I wind insulated copper
wire, as flat as possible, turn after turn, side by side, till a series is formed sufficient
for one coil say, a right handed one The ends of the rods at the side above
referred to are then unhinged & the wire led inside the frame so as to enable it to
be rotated in the opposite direction thus forming a left handed coil This process
of alternate winding is followed without any break or junction in the wire till
coils of sufficient number are formed. The frame is then unbolted at the corners
& the rods which compose it are drawn out leaving a continuously alternating
number of straight flat coils which are erected into an armature by being formed
round and secured to a central boss by spokes or side cheeks bolted thereon and
terminating in an enveloping rim said armature is mounted for rotation between
electro magnets with alternating poles in the usual way A further improvement
of mine consists in constructing the armature as follows, I produce by stamping or
cutting out or casting in copper or other conductor flat strips of like length and
similar width and divide each strip down the centre through its thickness till near
the bottom so as to form two limbs with a space between them springing from a
common base Round the periphery of a boss of vulcanised fibre or other suitable
material as thick as the copper strips are wide, I cut out interstices very near each
other giving the appearance of a wheel with long fine teeth and into these
interstices the bases of the copper strips are fitted and at suitable intervals
otherwise secured against centrifugal strain. Two side cheeks of vulcanised fibre
or like material whose peripheries overlap the ends or edges of the strips in the
boss are then bolted thereto thus providing a firm solid and simple foundation for
the conductor. The strips at their outer ends are suitably joined by diagonal
connections the right-hand limb of one strip going to the left hand limb of the
next strip and so on till a necessary series constituting say a right hand winding
or description of coil equal thereto is completed, the order of joining the connections
being then reversed to form a left hand winding. The Armature consists of the
requisite number of such approximately rectangular or sector shaped coils alternating
right & left hand, & is mounted for rotation between electro magnets whose pole
pieces (alternating in sign), are approximately sector shaped like the coils.
Dant J. Jansen 1001

page_text: I, SAMUEL WILLIAMS, of 185 Commercial Road, Newport, in the county of
Monmouth Inventor & Patentee do hereby declare the nature of my invention for
IMPROVEMENTS IN DYNAMO-ELECTRIC MACHINES and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:―
On
I prepare a rectangular hollow frame of steel rods or other strong material
bolted at the corners
The ends of these rods at the corners of one side or end of
the frame are arranged for unbolting and the frame is mounted for rotation.
this frame I wind insulated copper wire or other suitable conductor as flat in the
turns as possible, each turn side by side till a series is formed sufficient for one coil
say, a right handed one The ends of the rods at the side or end of the frame
above referred to are then unbolted, and the wire or other conductor led inside the
frame so as to enable it rotated in the opposite direction thus forming a left handed
coil. This process of alternate winding is followed without any break or junction
in the wire or other conductor till coils of sufficient number are formed.
frame is then unbolted at the corners & the rods which compose it are drawn out
leaving a continuously alternating number of straight flat coils which are erected
into an armature by being formed round upon and secured to a central boss by
spokes, radial bars and or side cheeks bolted thereon & terminating in an
enveloping rim. Said armature is mounted for rotation between electro magnets
with alternating and opposing poles, the connection between the armature and a
corresponding commutator being made in a suitable manner.
The
A further improvement of mine consists in constructing the armature as follows-
I produce by stamping out or cutting out of sheet copper or other suitable conductor,
but preferably by casting in copper or other suitable conductor flat strips or bars
or shapes all of the same length width & thickness, each strip or shape being
divided down the centre through its thickness till near the bottoin Two limbs are
thus formed, with a space between them, both limbs springing from a common
base. Round the periphery of a boss of vulcanised fibre or other suitable material
as thick as the copper strips are wide at their bases, I cut out interstices very near
each other giving the appearance of a wheel with long fine teeth and into these
interstices the copper strips are fitted and, at suitable intervals, otherwise secured
against centrifugal strain; i.e. some of the strips are formed with an elongation of
their bases which run into the boss till near the centre thereof & are fastened
therein by cross brackets & bolts or in other suitable way. Two side cheeks of
vulcanised fibre or like material whose peripheries overlap the ends or edges of the
bases of the strips in the boss are then bolted thereto thus providing an efficient
foundation for the conductor The strips at their outer ends are joined by the
right hand limb of one strip being suitably connected to the left hand limb of the
next strip and so on until a necessary series constituting say a right hand winding,
or description of coil equal thereto is formed the order of connecting the limbs
being then reversed to form a left hand winding The armature consists of any
requisite number of such approximately rectangular or sector shape coils alternating
right & left hand & is mounted for rotation between Electro-magnets whose pole
pieces alternating in sign & opposed in polarity are sector shape like the coils &
the current is led off in the usual way.

page_text: 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. In constructing a Dynamo-Electric machine according to my present
Invention, the method & means of forming the armature by winding the conductor
on a frame without break in its continuity substantially as set forth.
2-In constructing a Dynamo-Electric machine according to my present
Invention the method of producing the conductor portion of the armature by
casting, stamping out or cutting out of strips or bars connected to form flat coils as
substantially set forth.