IMPROVEMENTS IN THE CONSTRUCTION AND ARRANGEMENT OF DYNAMO' OR ELECTRIC CURRENT PRODUCING MACHINES
Year: 1882

page_text: LETTERS PATENT to John Banting Rogers of 47 Holborn Viaduct in the
City of London Engineer for an invention of IMPROVEMENTS IN THE
CONSTRUCTION AND ARRANGEMENT OF DYNAMO' OR ELECTRIC CURRENT
PRODUCING MACHINES
'
PROVISIONAL SPECIFICATION left by the said John Banting Rogers at
the Office of the Commissioners of Patents on the 13th April 1882.
JOHN BANTING ROGERS of 47 Holborn Viaduct in the city of London
Engineer IMPROVEMENTS IN THE CONSTRUCTION AND ARRANGEMENT OF "DYNAMO "
OR ELECTRIC CURRENT PRODUCING MACHINES
The object of this invention is improvements in the construction and arrange-
ment of "Dynamo" or electric current producing machines.
For the purposes of my invention I mount upon a spindle or shaft one or more
series of helices or coils and revolve them as one body on one or on both sides of
fixed magnetic rings or their equivalent The rings may be full circles with
indentations for an insulating medium to be fitted in or they may be composed of
half rings or segments with an insulating body between the meeting ends or edges
for the necessary make and break action.
The helices or coils may be arranged in single or in double circles to in or
between supporting or connecting plates or otherwise arranged to rotate around
the face or faces of the fixed ring or rings.
By my invention I concentrate the current as generated into the centre of a
large magnetic field from which the fluid can be taken direct by conducting wires
to lamps for lighting purposes or otherwise.
I dispense with the usual "commutators" or "Brush" on Dynamo macliines by
my invention and obtain an increased quantity of electric fluid within a given
area and of a more highly concentrated nature with less tendency to escape than
by the present construction of dynamo machines in which the rings revolve and
the coils or helices are fixtures.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Banting Rogers in the Great Seal Patent Office on the
13th October 1882.
JOHN BANTING ROGERS of 47 Holborn Viaduct in the City of London
Engineer IMPROVEMENTS IN THE CONSTRUCTION AND ARRANGEMENT OF "DYNAMO "
OR ELECTRIC CURRENT PRODUCING MACHINES
The object of this Invention is improvements in the construction and arrange-
ment of "Dynamo" or electric current producing machines.
For the purposes of my Invention I mount upon a spindle or shaft one or more
series of helices or coils and revolve them as one body on one or on both sides of a
fixed electro ring or armature or its equivalent. The rings or armatures may be
full circles with indentations for an insulating medium to be fitted in or they may
be composed of half-rings-or_segments with an insulating body between the
meeting ends or edges for the necessary continuous or alternate-current_as_the
ring may be connected.
The helices or coils may be arranged in single or in double circles in or between
supporting or connecting plates or otherwise arranged to rotate around the face or
faces of the fixed ring or rings.
By my Invention I concentrate the current as generated into the centre of a
large magnetic field from which the fluid can be taken direct by conducting wires
to lamps for lighting purposes or otherwise. I obtain an increased quantity of
electric fluid-within-a-given.area_and_of a more highly concentrated nature, with
less tendency to escape than by the present construction of--dynamo_machines_in
which the rings revolve and the coils or helices are fixtures.
My Invention will be clearly understood by the annexed, drawings in which
Figure 1 is a partial elevation of a dynamo supported on a base plate A by
uprights B B. C is the spindle on which the two rings or circle of bobbins D D
are keyed so as to revolve therewith under the action of a belt on the pulley E
from any prime mover. The bobbins D D are fixed at equal distances from the
axis of the spindle and coupled by the wires F F, G G being the "leed wires
from the bobbins D D to the commutators H H which revolve with the spindle.
These leeds are connected to terminals I I to which conducting wires can be
attached as desired.
"
J is an armature fixed between the double circle of bobbins, or it may be with
a single circle of bobbins if desired, and retained rigidly in position by the
uprights K K. This armature is composed of twelve, twenty four or other number
of segments as shown by the detached view Figure 2. This armaturo ring is
composed of divisional pieces L between which and the ring, wires are wound to
fill the spaces, as shown at Figure 3 and sectional view Figure 4. The armature
ring may be in two pieces as in Figure 5.
Figure 6 shows a view of coils or magnets having a hollowed face with a round
fixed armature within the hollows.
Figure 7 represents a double or two circles of coils or magnets on the same
plate M.
Figures 8 to 11 show diagrams of some of the ways in which the armature J
can be connected up. Figuro 8 is a view of twenty four sections in series. Figure 9
a view of twenty sections in multiple are and 4 in series. Figure 10 shows
24 in multiple arc and Figure 11 a diagram of an armature divided into halves,
twelve sectious in multiple arc in each half.
Having now described the nature of my said Invention and in what manner
the same is to be performed I declare that I claim :-
The construction of dynamo machines in the manner set forth and shown in

page_text: the drawings Figures 1 and 2, the main features in which are-the disc of helices
or coils revolving on the spindle and having a fixed or stationary armature on one
side or between a double set of helices or discs as described.
In witness whereof I the said John Banting Rogers have hereunto set my
hand and seal this Tenth day of October in the year of our Lord, One
thousand eight hundred and eighty two.
Witness
H. GARDNER
Patent Agent
160 Fleet St.
London
JOHN BANTING ROGERS. (L.S.)