Improvements in Winding Armatures for Dynamos and Electro Motors, specially applicable to Alternators and Alternate Current Motors.
Year: 1895

page_text: Date of Application, 23rd July, 1895
Complete Specification Left, 18th May, 1896-Accepted 20th June, 1896
PROVISIONAL SPECIFICATION.
Improvements in Winding Armatures for Dynamos and Electro
Motors, specially applicable to Alternators and Alternate
Current Motors.
1, The Honourable CHARLES ALGERNON PARSONS, of Heaton Works,
Newcastle-on-Tyne, in the County of Northumberland, Engineer, do hereby
declare the nature of this invention to be as follows:-
My invention relates to the winding of armatures for dynamos and electro
motors, and its object is to simplify the winding, and improve the insulation.
My invention consists in winding the armature with a multiple wire cable,
instead of a single wire cable, as heretofore.
The cable may be constructed of two or more strands insulated from each
other and the strands may be arranged both as to relative position and insulation
in any convenient and suitable manner. I prefer however, to arrange the strands
on a concentric system, so as to facilitate the insulation of one strand from
another, especially between those strands where there is the greatest difference of
potential.
In one cable constructed for the purposes of my invention I arrange twenty
four wires in two concentric circles, the inner circle consisting of eight wires, and
the outer circle of sixteen.
I do not distribute the wires uniformly around the concentric circles but put
them closer together round part of the circle and so leave a considerable space
between two of the wires at that part where the difference of potential is greatest.
This space I fill with insulating material.
By my system I am enabled to vary the insulation in a simple and convenient
manner. I carefully insulate the two concentric circles of wire, and surround the
exterior circle with a suitable thickness of insulating material.
When such a cable is used for the winding of the armature of an alternate
current dynamo, I wind it through suitable passages in the armature core, or
otherwise I restrain it in any suitable way near the outer circumference of the
armature.
I may wind the cable either in one or in several continuous lengths through one
or more passages in the armature and I joint the ends of the separately insulated
wires or strands in series or in compound series, so that the said wires or strands
form separate convolutions of the armature winding. The winding of the armature
is thus greatly facilitated. Such a cable may also be used for continuous current
armatures. In this case the strands of the cable are suitably arranged for coupling
up to the sections of the commutator.
My method of winding armatures with stranded cables is applicable to electro
motors as well as to dynamos.
It will be readily understood that my invention may be applied with many
modifications, so long as the feature of the stranded cable is maintained.
Dated this 22nd day of July 1895.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Winding Armatures for Dynamos and Electro
Motors, specially applicable to Alternators and Alternate
Current Motors.
1, The Honourable CHARLES ALGERNON PARSONS, of Heaton Works,
Newcastle-on-Tyne, in the County of Northumberland, 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 winding of armatures for dynamos and electro-
motors, and its object is to simplify the winding, and improve the insulation.
My invention consists in winding the armatures with a multiple wire cable,
instead of a single wire cable as heretofore.
The cable may be constructed of two or more strands insulated from each other
and the strands may be arranged both as to relative position and insulation in any
convenient and suitable manner, I prefer, however, to arrange the strands on a
concentric system, so as to facilitate the insulation of one strand from another
especially between these strands where there is the greatest difference of potential.
In one cable constructed for the purposes of my invention I arrange twenty four
wires in two concentric circles, the inner circle consisting of eight wires, and the
outer circle of sixteen.
I do not distribute the wires uniformly around the concentric circles but put
them closer together round part of the circle, and so leave a considerable space
between two of the wires at that part where the difference of potential is greatest.
This space I fill with insulating material.
By my system I am enabled to vary the insulation in a simple and convenient
manner. I carefully insulate the two concentric circles of wire, and surround the
exterior circle with a suitable thickness of insulating material.
When such a cable is used for the winding of the armature of an alternate
current dynamo, I wind it through suitable passages in the armature core, or
otherwise I restrain it in any suitable way near the outer circumference of the
armature.
I may wind the cable either in one or in several continuous lengths through one
or more passages in the armature, and I joint the ends of the separately insulated
wires or strands in series or in compound series, so that the said wires or strands
form separate convolutions or groups of convolutions of the armature winding.
The winding of the armature is thus greatly facilitated. Such a cable may
'also be used for continuous current armatures. In this case the strands of
the cable are suitably arranged for coupling up to the sections of the commutator.
My method of winding armatures with stranded cables is applicable to electro-
motors as well as to dynamos. It will be readily understood that my invention
may be applied with many modifications, so long as the feature of the stranded
cable is maintained.
Referring to the accompanying sheet of drawings-
Figure 1 is a section through an armature constructed with my multiple cable
wire.
Figure 2 is a diagrammatic section showing my cable wound through passages
in a continuous length, and
Figure 3 is an end section showing my multiple wire cables according to one
form.
It is to bé distinctly understood that I do not confine my invention to any
particular type of dynamo or motor but that I may apply it to any dynamo or
motor.

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-
Winding the armature of a dynamo or motor with a multiple wire cable,
substantially as hereinbefore described.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.