Applicable also for other urposes WHOLE Induction of Static Electricity is desired.
Year: 1884

page_text: Applicable also for other urposes WHOLE
Induction of Static Electricity is desired.
We CHARLES LEIGH CLARKE Engineer and HERBERT JOHN COATES Electrician
both of Cleggs Court Chapel Street Salford in the County of Lancaster do hereby
declaro the nature of our invention for "IMPROVEMENTS IN APPARATUS FOR
LIGHTING GAS BY ELECTRICITY APPLICABLE ALSO FOR OTHER PURPOSES WHERE
IGNITION BY THE INDUCTION OF STATIC ELECTRICITY IS DESIRED to be as
follows:-
"
»>
The invention consists principally of an improved construction or form of the
type of "static" inductive generator known as the "Wimshurst" in order to make
it applicable for a portable gas-lighter.
We make the di-electrics in a cylindrical form and cause them to rotate in
opposite directions one inside the other. These cylinders support the metallic
strips which act in turn as carriers and inductors.
These cylinders are enclosed in an outer case (of ebonite or other suitable
material) At the upper end of this case at a short distance from the end a disc of
insulating material is fixed which supports the collecting and distributing springs;
this case serving also to support the driving arrangement and the sparking tube.
The moving cylinders are caused to revolve in the following way. To the
innermost cylinder a cylinder of pinion wire is fastened which gears with the
driving arrangement. To the other cylinder is fixed a short tubular spindle which
slips over the spindle of the first cylinder and is free to revolve on it; to each
spindle is fitted a bevil wheel, there being placed in gear with these wheels and at
right angles to them another bevil wheel, so that when the one cylinder is caused
to revolve in one direction or the other one receives a motion in the opposite
direction. To prevent wear of the carriers and inductors if made of foil, contact
studs are arranged of brass or other metal let into ebonite and turned off flush for
the springs to rub upon; those contact pieces being placed inside of the inner cell
and on the outside of the outer one and in electrical connection with the carriers.
Or instead of cylinders, plates or discs may be arranged to revolve in the bottom of
the apparatus the bottom for this purpose being made of larger diameter than the

page_text: rest, and it then also serves as a convenient base for the whole instrument; the
upper part of smaller diameter serving as a handle also to contain the drying
material and to support the driving mechanism, sparking tube and necessary.
connections.
If foil is used for the carriers we prefer to arrange suitable contact pieces of
metal for the contact springs to rub upon. The driving gear is like the arrange-
ment described in the Specification of Letters Patent N° 5992, dated December 31st
1883, or simply a wheel large enough to gear with the centre pinion and to project
somewhat out of the apparatus so that a side pressure, from the thumb applied at
the periphery suffices to give the required motion. The sides of the teeth may be
rounded to prevent injury to the thumb; or instead of toothed wheel' and pinion
a plain wheel covered on the circumference with rubber, or it may be made of hard
rubber or vulcanized fibre or other suitable substance, and rotate the spindle by
friction. It will be evident that with very slight modifications the above arrango-
ment of apparatus may also be used for other electrical purposes where ignition by
the induction of static electricity is desired.

page_text: Applicable also for other Purposes where Ignition by the
Induction of Static Electricity is desired.
We CHARLES LEIGH CLARKE Engineer, and HERBERT JOHN COATES, Electrician
both of Cleggs Court, Chapel Street Salford in the County of Lancaster do hereby
declare the nature of our invention for IMPROVEMENTS IN APPARATUS FOR
LIGHTING GAS BY ELECTRICITY, APPLICABLE ALSO FOR OTHER PURPOSES WHERE
IGNITION BY THE INDUCTION OF STATIC ELECTRICITY IS DESIRED and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The invention consists principally of an improved construction or form of the
typo of "static" inductive generator known as the " Wimshurst," and the
particular construction of our improved apparatus will be readily understood on
reference to the annexed sheet of drawings and the following explanation thereof.
Fig. 1. in the annexed drawing is a vertical section of one arrangement of our
improved apparatus and Fig. 2. is a horizontal section of the same.
We prefer to make the dielectrics a, a and b, b in a cylindrical form and cause
them to rotate in opposite directions one inside of the other.
These cylinders support the metallic strips c, c which act in turn as carriors and
inductors.
These cylinders a, a and b, bare enclosed in an outer case d, d (of ebonite or
other suitable material).
In the upper end d, d of this case at a short distance from the end a disc of
insulating material e, e is fixed which supports the collecting neutralizing and
distributing springs f. f, this part d', d' serving also to support the driving
arrangement and the sparking tubo ".
The springs ffff are arranged in pairs being connected or coupled together
on the insulating disc e, e as indicated by the dotted lines in Fig. 2. The wires f, f
are connected through the wires x and y to the point . f, f¹ are connected
through the metallic cases d³ and tube d" to the point 2¹; f' and ', are neutralizing
springs.
The moving cylinders are caused to revolve in the following way. To the
outermost cylinder a, a a spindle g g of pinion wire is fastened which gears with
the driving arrangement.
To the other cylinder b, b is fixed a tubular spindle h, h which slips over the
spindle g g of the first cylinder a, a and is free to revolve on it. To each spindle is
fitted a bevil wheel i, i there being placed in gear with these wheels and at right
angles to them another bevil wheel k, k so that when the one cylinder is 'caused to
revolve in one direction the other one receives a motion in the opposite direction.
To prevent wear of the carriers and inductors if made of foil, contact studs or strips
similar to those described in the Specification of Letters Patent N° 5992 A.D. 1883,
are arranged of brass or other metal let into ebonite and turned off flush for the
springs to rub upon; these contact pieces being placed inside of the inner cell and

page_text: .
on the outside of the outer one and in electrical connection with the 'carriers.
Or instead of cylinders, plates or discs may be arranged to revolve in the bottom
of the apparatus, the bottom for this purpose being made of a larger diameter than
the rest, and it then also serves as a convenient base for the whole instrument as
shown in vertical section at Fig. 3. and horizontal section Fig. 4. the upper part of
smaller diameter serving as a handle, and to support the driving mechanism,
sparking tube, and necessary connections.
If foil is used for the carriers we prefer to arrange suitable contact pieces of
metal for the contact springs ƒƒ³, ƒ ƒ³, to rub upon. These springs f. ƒ³, ƒ³, ƒ³, are
connected in pairs as in the former case.
The driving gear is like the arrangement described in the Specification of
Letters Patent N° 5992 dated December 31st 1883, or simply a wheel large enough
to gear with the centre pinion and to project somewhat out of the apparatus so
that a side pressure from the thumb applied at the periphery suffices to give the
required motion.
The sides of the teeth may be rounded to prevent injury to the thumb; or
instead of toothed wheels and pinion we may employ a plain wheel covered on the
circumference with rubber (or it may be made of hard rubber or vulcanized fibro
or other suitable substance to rotate the spindles by friction.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
The special portable forms and construction of static inductive generator of the
"Wimshurst" type as illustrated by the annexed drawings and above particularly
described, whether applied for the purposes of igniting gas by electricity or for
other purposes where ignition by the induction of static electricity is desired.
Dated this 2nd dex of Tule 100%