Improved Commutator for Magneto or Dynamo Electric Generators.
Year: 1888

page_text: Date of Application, 19th May, 1888
Specification Accepted, 5th Oct., 1888
Improved Commutator for Magneto or Dynamo Electric Generators.
I, MAXYMILIAN KOTYRA, of Castle Street, Cardiff, in the County of Glamorgan,
Electrical 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 :-
My invention relates to the production of an improved alternating commutator for
rendering an alternate current from a magneto or a dynamo-electro machine or
generator; and is peculiarly adapted to produce an alternating current to be used for
the purpose of an invention for the prevention of corrosion and formation of scale in
steam boilers patented to me by Letters Patent, No. 3749, 11th March, 1887.
In order that my invention, and the means by which the same is to be carried into
practical effect, may be thoroughly understood; I will proceed to describe it in detail,
referring in so doing to the accompanying drawings which are to be taken as part of
this specification, and read therewith.
Fig. 1 is an end elevation of a dynamo to which my invention is applied, and
Fig. 2 is a side elevation corresponding therewith.
Referring to my above mentioned invention, I describe in the specification thereof a
system of applying electrical currents to a boiler shell, according to which the
currents, instead of being regular in either direction, are alternating.
In the said specification and in the drawing forming part thereof are specified and
illustrated an alternating apparatus separate and distinct from the dynamo-electric
machine.
But according to my present invention I construct the commutator in such a way
that it will render an alternating current, thereby dispensing with, a separate
alternating apparatus or commutator.
Referring to the accompanying figures, F is a commutator ring. It is split at f. f';
but these splits instead of being at the ends of a diameter of the commutator, as they
have hitherto been, are at the ends of radii meeting at an angle in the axis of the
commutator, making the periphery of one part of the ring longer than the other.
The size of the said angle decides the relative terms of the respective currents.

page_text: That is to say, I do not, according to my present invention, confine myself to any
particular angle, but I have found by practical experience of the use of the said
invention, that the angle illustrated in Fig. 1 is one that has given satisfactory results
for the purpose of my said previous invention No. 3749 of 1887.
Having now particularly described and ascertained the nature of my said present
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The construction of commutator substantially as and for the purpose hereinbefore
described and illustrated.
2. The combination with a magneto or a dynamo-electric machine or generator of
a commutator adapted in substantially the manner hereinbefore described to render an
alternating current.
Dated this 19th day of May 1800.
PHILLIPS & LEIGH,
Patent Agents,
22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicant.