IMPROVEMENTS IN DYNAMO. OR MAGNETO-ELECTRIC. MACHINES WHICH WILL ALSO SERVE AS ELECTRO- MOTORS
Year: 1882

page_text: LETTERS PATENT to Richard Werdermann of Princes Street in the county
of Surrey, Civil Engineer, for an invention of "IMPROVEMENTS IN DYNAMO.
OR MAGNETO-ELECTRIC. MACHINES WHICH WILL ALSO SERVE AS ELECTRO-
MOTORS."
PROVISIONAL SPECIFICATION left by the said Richard Werdermann at
the Office of the Commissioners of Patents on the 4th July 1882.
RICHARD WERDERMANN, of Princes Street in the County of Surrey, Civil
Engineer, "IMPROVEMENTS IN DYNAMO OR MAGNETO-ELECTRIC MACHINES WHICH
WILL ALSO SERVE AS ELECTRO-MOTORS "
My invention relates to dynamo and magneto electric machines which will also
serve as electro-motors. Its object is to construct a single dynamo or magneto-
electric machine which will produce an effect equal to that of a number of the
ordinary machines combined, or to construct an electro-dynamic machine or.
electro-motor in which the motive power will be equal to that obtained by means
of a number of ordinary machines.
•
In carrying my said invention into practice I provide a suitable framework
within which I fix the magnets so constructed and arranged that there are a number
of pairs of poles or polar extensions between each pair of which.I place an armature
capable of rotation in suitable bearings in the said framework and fitted with
commutators or collectors in the ordinary manner, I prefer two employ two series
of magnets, each series composed of one or more plates or bars of circular form, and
having semi-circular or crescent-shaped parts forming the polar extensions within
which the armatures are arranged to be rotated; one of the said series of magnets
is placed within, and concentric with, the other, and the driving, or driven shaft, as
the case may be, is carried in bearings in the framework and has its axis coincident
with the axis of the two series of magnets. I connect the pulleys of the rotary
armatures, by means of belts or cords, with a pulley or pulleys upon the said driving
or driven shaft, so that each armature will be driven by the said shaft, or may be
utilized for transmitting motion to the same. The plates or bars forming the.
magnets are connected midway between one armature and the adjacent one, and
the wires are coiled around them on each side of such connections..
;

page_text: .
In place of the electro-magnets above described I sometimes use permanent
magnets.
By employing a machine constructed as above described, the currents collected
from the several armatures may be used either separately or combined. In
applying the said invention to electro-dynamic machines a single current may be
passed through all the coils or a separate current through each coil as may be
deemed expedient.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said 'Richard Werdermann in the Great Seal Patent Office on the
4th January 1883.
RICHARD WERDERMANN, of Princes Street, in the County of Surrey, Civil
Engineer, IMPROVEMENTS IN DYNAMO OR MAGNETO ELECTRIC MACHINES WHICH
WILL ALSO SERVE AS ELECTRO-MOTORS."
My invention relates to dynamo and magneto electric machines which will also
serve as electro-motors. Its object is to furnish machines which are so constructed
that each machine, in respect of the number and arrangement of its parts, may be
said to constitute a series of machines combined in a compact and convenient form
and capable of operating very efficiently for either of the above named purposes,
According to my said invention I construct each machine with a number of
magnets and armatures suitably arranged in combination with a main shaft the
shafts of the said armatures being connected to the said main shaft by belts and
pulleys, or by frictional or other gearing, in such. a manner that motion can be
transmitted from the said main shaft to all the armatures, or vice versa.
The said invention is illustrated in the accompanying drawing which I will now
proceed to describe, and in which—
Figure 1 is an end elevation, partly in section, and
Figure 2, a side elevation, partly in section
Like letters indicate the same parts in both figures.
A is the framework within which I fix magnets a with polar extensions a¹,
between each pair of which I place an armature b fixed on a shaft b¹ capable of
rotation in suitable bearings in the said framework. These armatures may be of
the "Gramme" or other suitable form or type and are fitted with commutators or
collectors in the ordinary manner. I prefer to employ an annular series of magnets,
as shewn, composed of one or more pairs of plates or bars a³ having semi-circular
or arched portions forming the polar extensions within which the said armatures
are arranged. These plates or bars are connected by transverse pieces c of cast
iron or other suitable material, so as to constitute, with the said pieces, a number of
horse-shoe magnets, the wires being coiled around them on each side of such
transverse pieces.
A central or main shaft d is carried in bearings in the framework and has its
axis parallel with, the axes of the armature shafts 6'. The shafts of the rotating

page_text: armatures are provided with pulleys b¹ which I connect, by belts or cords e, with a
pulley upon the said main shaft (or I provide frictional or other gearing in place
of these belts and pulleys) so that each armature will be driven by the said shaft
or will drive the same.
In place of the electro-magnets above described I sometimes use permanent
magnets.
It is obvious that, in a dynamo or magneto electric machine constructed as above
described, the currents collected from the several armatures may be used either
separately or combined, according to the purpose for which they are to be employed.
In an electro-dynamic machine or electro-motor so constructed, a single current
may be passed through all the coils in series, or a separate current may pass
through each coil, as may be deemed expedient.
Having thus fully described my said Invention and the manner of performing
the same I wish it understood that I Claim:-A machine in which a number of
magnets and rotative armatures, substantially as described, are arranged around,
and in combination with, a main shaft, for the purposes above specified.
In witness whereof I the said Richard Werdermann have hereunto set my
hand and seal this Fourth day of January in the year of Our Lord One
thousand eight hundred and eighty three,