Improvements in or connected with Electric Switches.
Year: 1890

page_text: Date of Application, 18th Oct., 1890
Complete Specification Left 23rd Mar 1891-Accented 25th Apr. 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Electric Switches.
Communicated from WILHELM PAUL DANIELS, Elberfeld, Germany.
I, CHRISTEN REES BONNE, of 41, Eastcheap, in the County of London, Patent
Agent, do hereby declare the nature of this invention to be as follows:-
The object of my invention is an electric switch that switches suddenly off and
on, and the manner in which carry my invention into effect is shown in the
accompanying drawing, of which Figs. 1 and 2, are ground plans of the instrument
in two different positions while Fig. 3 is a cross section of Fig. 1 on the line A-B
and Fig. 4 a cross section of Fig. 2 on the line C D.
The instrument consists of bow a, which is attached to the support b, on which
the two contact plates c and e' are likewise affixed, such plates slanting somewhat
towards one end so that the contact bridge d, attached to the lower part a' of bow a
is raised when forced against them.
The plate spring e attached to the contact bridge d, tends to press the latter
against the said plates c and c'.
On the lower part a' of bow a there is furthermore attached two striking pins
and f, of which the one stops the movement of the bridge when switching on and
the other when switching off.
"
The bridge or lever d is actuated by means of a lever g, carried in the upper
part a² of bow a which is at rest in two position, corresponding to the "off" or on
of the switch, and held in these positions by means of a spring attached to
The lever g thus presses in both cases with its end gf against the contact
bridge d.
Lever g is connected with an axis g' which is carried in part a² of the bow, and
is provided at its upper end with a shoulder y³ and two pins g*.
bow a.
On the shoulder g³ sits the handle i, in which there is a pin which catches
between the two pins g. The handle i is attached to bow a by means of a screw,
which moves in a groove made in bow a, such screw also holding the mantle k, by
which the mechanisms are covered.
The action of the instrument will be understood from the following explanation.
In Fig. 1 the instrument is represented as switched "on," the lever g being
placed to the right of bow a, and such is also spring placed.
By now turning the handle i to the left (in direction of arrow 1) then pin lays
itself against pins ', thereby causing the shaft g2, and consequently lever 9, to be
turned in the same direction.
Spring his likewise caused to turn at the same time drawing lever g towards its
position of rest, in such a manner that as soon as lever g has made somewhat more
than a turn of 90 degrees and passed the dead point at m it is drawn with great
force to the left in the position shown in Fig. 2. Hereby the lower end g¹ takes
the left arm of lever d with it, turning it on pin d' in the direction of arrow n until
it pushes against the striking pin f', and the switching off is done.
It will be readily seen that lever y can make its movement quite independently
of handle i inasmuch as pins 9', which are firmly connected with a can turn freely
to the left as soon as pin has brought the whole over the dead point.
Spark formation can only take place at the slanting ends of the contact plates at
the moment when lever g leaves the same, which however takes place very quickly.
Dated this 18th day of October 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Electric Switches.
Communicated by WILHELM PAUL DANIELS, of 27, Hofkamp, Elberfeld, German
Empire, Electrician.
I, CHRISTEN REES BONNE, of 57 & 58, Chancery Lane (formerly of 41,
Eastcheap), in the City and County of London, Patent Agent, 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:-
The object of my invention is an electric switch that switches off and on, and the
manner in which I carry my invention into effect is shewn in the drawing filed with
the Provisional Specification of which Figs. 1 and 2 are ground plans of the
instrument in two different positions while Fig. 3 is a cross section of Fig. 1 on the
line A B and Fig. 4 a cross section of Fig. 2 on the line C--D.
The instrument consists of how a which is attached to the support b on which the
two contact plates c and c are likewise affixed such plates slanting somewhat
towards one end so that d, attached to the lower part of a¹ of bow a is raised when
forced against them.
The plate spring e attached to the contact bridge d, tends to press the latter
against the said plates c, and c¹.
On the lower part of a¹ of bow a there is furthermore attached two striking
pins and fof which the one f stops the movement of the bridge when switching
on " and the other f' when switching "off."
or
carried in the upper
The bridge or lever d is actuated by means of a lever
part a² of bow a which is at rest in two positions corresponding to the "off"
« on "of the switch and held in these positions by means of a spring attached to
The lever g thus presses in both cases with its end g₁ against the contact
Lever g, is connected with an axis g² which is carried in part a² of the bow and
is provided at its upper end with a shoulder g³ and two pins g*.
bow a.
bridge d.
On the shoulder 93 sits the handle i in which there is a pin which catches
between the two pins g*. The handle is attached to bow a by means of a screw,
which moves in a groove made in bow a such screw also holding the mantel k by
which the mechanisms are covered.
The action of the instrument will be understood from the following explanation.
In Fig. 1 the instrument is represented as switched "on," the lever f being
placed to the right of bow a and such is also spring placed. By now turning the
handle i to the left (in direction of arrow 1) pin i¹ lays itself against ping, thereby
causing the shaft g², and consequently lever g, to be turned in the same direction.
g
Spring is likewise caused to turn at the same time drawing lever towards its
position of rest in such a manner that as soon as lever g has made somewhat more
than a turn of 90 degrees and passed the dead point at m it is drawn with great
force to the left in the position shewn in Fig. 2. Hereby the lower end g¹ takes
the left arm of lever d with it, turning it on pin d' in the direction of arrow n until
it pushes against the striking pin f¹ and the switching "off" is done.
It will be readily seen that lever g can make its movement quite independently
of handle i inasmuch as pins g' which are firmly connected with a can turn freely to
the left as soon as pin has brought the whole over the dead point.
Spark formation can only take place at the slanting ends of the contact plates at
the moment when lever g leaves the same, which however takes place very quickly.
Having now particularly described, and ascertained the nature of my said inven
tion, and in what manner the same is to be performed, I declare that what I
claim is
An electric switch consisting essentially of a lever g turnably attached to bow

page_text: with pins g and handle i with pin i¹ which as soon as it in turning has passed the
dead point m can be suddenly drawn to the right or left by means of a spiral
spring h, the switching being effected through end g¹ of lever g causing either the
right or left arm of lever d which is pressed downwards by spring e, to make a
short movement whereby it either strikes on or moves away from contact plates c
or c¹; pins and acting as stoppers for the movements of the contact bridge or
lever d substantially in the manner as and for the purpose described and as shewn
in drawings.
Dated this 21st day of March 1891.
C. R. BONNE & Co.,
Authorized Patent and Trade Mark Agents, 57 & 58, Chancery Lane,
Agents for the Applicant.