Improvements in Switch-boards for Stations of Electrical Supply.
Year: 1890

page_text: Date of Application, 13th Mar., 1890
Complete Specification Left, 1st Dec., 1890-Accepted, 24th Jan.. 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by ALFRED MILLS TAYLOR, at present in Baroda, India
Electrical Engineer.]
Improvements in Switch-boards for Stations of Electrical Supply.
We, SIEMENS BROTHERS & CO. LIMITED, of 12 Queen Anne's Gate, Westminster, .
in the County of Middlesex, Electrical Engineers do hereby declare the nature of this
invention to be as follows:-
In many cases a number of dynamos at a station are employed to produce electricity
to be transmitted by a number of main conductors or leads to different places, to
supply lamps or other apparatus consuming electricity. This invention relates to a
construction and arrangement of switch board at such a station whereby any one or
more of a number of dynamos can be readily connected to or disconnected from any
one or more of a number of leads. For this purpose, on a board of wood or other
insulating material are placed a number of parallel bars each connected at one end
to one of the terminals, say the + terminal, of one of the dynamos. Across these
parallel bars but not in contact with them are placed a number of other parallel bars
each connected at one end to one of the leads, through a switch, and preferably also
through a safety fuse and a current indicator. By means of suitable plugs, inserted
where the bars cross each other, any one or more of the first mentioned parallel bars
can be connected to one or more of the cross bars, and thus any of the dynamos may
be connected to any of the leads switched in.
Dated this 13th day of March 1890
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Switch-boards for Stations of Electrical Supply.
We, SIEMENS BROTHERS & CO. LIMITED of 12 Queen Anne's Gate, Westminster,
in the County of Middlesex, Electrical Engineers, 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 :-
In many cases a number of dynamos at a station are employed to produce electricity
to be transmitted by a number of main conductors or leads to different places, to
supply lamps or other apparatus consuming electricity. This invention relates to a
construction and arrangement of switch board at such a station, whereby any one or
more of a number of dynamos can be readily connected to or disconnected from
any one or more of a number of leads. For this purpose, connections are made as
illustrated by the accompanying diagram. On a board B of wood or other insulating
material are placed a number of parallel bars A' A' &c. each connected at one end
to one of the terminals say the + terminal, of one of the dynamos. Across the
parallel bars, but not in contact with them are placed a number of other parallel
bara CC&c. each connected at one end to one of the leads L' L' &c. through a
switch, and preferably also through a safety fuse and a current indicator.
By means of suitable plugs Pinserted where the bars cross each other as for
instance at the crossings of A³ ³, or A* C* any one or more of the bars A can be
connected to one or more of the cross bars C, and thus any of the dynamos may be
connected to any of the leads that is switched in..

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A switch board for a station of electrical supply, consisting of a number of parallel
conducting bars, each connected to a dynamo or other source of electricity, crossed
by other parallel bars, each connected to a conducting lead but insulated from the
former bars except when connection is made by a plug, substantially as described.
Dated this 1st day of December 1890
ABEL & IMRAY,
Agents for the Applicants.