IMPROVEMENTS IN ELECTRO-MOTORS AND DYNAMO-MACHINES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the Office
of the Commissioners of Patents on the 25th October 1883. Communicated
to him from abroad by Hugo Walter, of Cincinnati, Ohio, United States of
America.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
Southampton Buildings, London, "IMPROVEMENTS IN ELECTRO-MOTORS AND
DYNAMO-MACHINES [a communication to him from abroad by Hugo Walter, of
Cincinnati, Ohio, United States of America.]
"
This invention relates to Improvements in electro-motors and dynamo-machines.
In carrying the said invention into practico I provide two rotatory whools
mounted upon an axis, in combination with two series of fixed electro-magnets
arranged in circles upon stationary discs or plates placed near the said wheels and
parallel thereto.
Each of the said rotatory wheels consists of a hub or nave of wood or other
suitable material in which are embedded and fixed radially, blocks of cast iron,
each of which blocks carries two cores or arms of electro-magnets projecting
radially from the centre of the nave, the said cores or arms at their outer end are
screwed into a washer or plate of soft iron. The said cores, of which there may be
any suitable number, form a series of spokes or arms projecting radially from the
hub and connected together at their outor ends by metal bands or other suitable
mechanical means; each of the said cores is surrounded by a coil of insulated wire.
The two rotatory wheels are fixed side by side upon the central axis in such a
manner that the alternate magnets of one wheel correspond with the spaces left
vacant in the other wheel so that the two wheels form together an uninterrupted
circle or series of coils.
Parallel to the outer face of each of the said rotatory wheels is a vertical disc or
plate of circular or other suitable shape carried by a frame, or otherwise fixed in
position, and upon each of the said stationary plates or discs are mounted perpen-
dicularly to the poles of the magnets of the rotatory wheels, as many coils of
insulated wire as there are coils on the rotatory wheel next it, the said coils being
carried by cores affixed to the disc or plate, and on the outer end of each of the
said cores is a prolongation or neck made of soft iron formed so that its outer end
comes just over the washer or plate on the outer end of one of the arms or spokes
of the rotatory wheel next it

page_text: The wires of the coils of the rotatory wheels collect on a commutator revolving on
the axis. The coils of the outer plates or discs receive the current directly from
an outside source of electricity without any reversing of currents. It follows that
the middle or rotatory wheels with the aid of the commutator find a continuous
opposite polarity in the poles of the outside plates or discs and thereby are
continually propelled forwards.
According to a modification of the said invention, instead of tho cores of the
coils on the stationary discs or plates being provided with projecting necks
extending to near proximity of the washers or plates on the outer ends of the cores
of the rotatory wheels-the cores of the coils on the stationary discs or plates may
be prolonged horizontally, the radial cores of the rotatory wheels being then
lengthened so as nearly to come in contact with them.
According to another modification of the said invention, the coils of the rotatory
. whicels, instead of projecting radially from a central hub or nave, are made cylin-
drical and parallel to the coils of the outer stationary plates or discs, the cores of
the coils in the rotatory wheel being fixed in circles upon each side of a plato
mounted upon the driving shaft and so disposed that the coils on one side of the
said plate are placed between two of the cores upon the other side of the said
plate.
->
Or the coils upon the rotatory plate, instead of being cylindrical in shape may
be conical, the basis of the cone being opposite to one of the coils upon the
stationary outer plate next it.
Or the stationary coils, instead of being, as in the arrangement first described,
mounted on plates or discs parallel to the rotatory wheels and at right angles to
the coils of the said wheels, may be mounted on the inner surface of an outer
annular frame and set radially to the axes of the said rotatory wheels and on a line
with the coils thereof.
If preferred, the machines may be sc constructed that the inner wheels are
stationary, the outer coils being mounted upon rotatory' discs or wheels, and in
that case the commutator would be connected to the outer wheels.
The machines herein before described may be used for the generation of electricity
as dynamo machines by causing the rotatory wheels to revolve by means of power
applied exteriorly.