Improvements in the Method of and Apparatus for Distributing Electricity.
Year: 1891

page_text: Date of Application, 17th Sept., 1891
Complete Specification Left, 17th June, 1892-Accepted, 23rd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for Distributing
Electricity.
I, CHARLES JAMES HALL, of the firm of John Fowler and Company, Limited,
Leeds, in the County of York, Electrician, do hereby declare the nature of this
invention to be as follows :-
:-
This invention has for its object, the effecting of more economy in labour, and
cost of production, at the same time a longer life is given to the plant used in the
generation of the electrical energy on existing alternating current supply stations
than hitherto; and consists in an arrangement of apparatus which will permit of.
the engine being worked at its full load, whatever the outside demand may be, say
for twelve hours, after which the engine may be at rest, provision being made for
the outside demand during the twelve hours the engine is at rest.
I accomplish my object by arranging the engine to drive two dynamos of
approximately equal capacity, say A. and C. A. is an alternating current dynamo
and C. is a continuous current dynamo. A. say is equal to 100 units in capacity,
and absorbs the whole power of the engine when at full load; as the outside demand
falls off, the balance of the power of the engine is take up by the dynamo C. and
its energy is stored in a battery of accumulators. C also acts as exciter to A.
After, say twelve hours run, the engine may be stopped, the accumulators are
then switched on to a continuous current motor which drives an alternating current
dynamo to supply the outside demand during the lighter load hours.
Dated this 16th day of September 1891.
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Distributing
Electricity.
1, CHARLES JAMES HALL, of the firm of John Fowler and Company Limited,
Leeds, in the County of York, Electrician, 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:—
This invention has for its object, the effecting of more economy in labour and
cost of production, at the same time giving a longer life to the plant used in the
generation of electrical energy on existing alternating current supply stations than
hitherto; and consists in an arrangement of apparatus which will permit of the
engine being worked at its full load whatever the outside demand may be, say for
twelve hours, after which the engine may be at rest, provision being made for the
outside demand during the twelve hours the engine is at rest.
In describing my invention in detail reference is made to the accompanying
sheet of drawings which represents a diagramatical plan of an electrical plant
suitable for carrying out my object.
In the accompanying diagram the fly wheel of an engine for driving the
dynamos A and C. is indicated by the letter D. the said fly wheel or pulley
transmitting rotary motion by means of a belt to the pulley P. mounted on the
dynamo armature shaft B. The dynamo A. is of the alternating current type
provided with collectors E and E¹ on the armature shaft B. the other dynamo C.
is of the continuous type and is provided with a commutator F. secured on the
armature shaft.

page_text: The alternating dynamo A. may, for example, be equal to a capacity of 100 units
the other dynamo being practically of the same capacity, the former dynamo A.
absorbing all the power exerted by the engine when the alternating demand is at a
maximum, but as the outside demand for the current falls off, the balance of the
power of the engine is absorbed by the continuous current dynamo C. that is, as
the load varies on the alternating dynamo, so in proportion is the load of the
continuous dynamo altered, so that, whatever demand the alternating current may
have, the continuous dynamo U. takes up the balance of the full power of the
engine and stores the electric energy by aid of connecting wires W. in the battery
of accumulator cells S.
On stopping the engine say after 12 hours run, the electric energy stored in the
accumulator cells S. can then in turn carry on the work by passing the current
through a regulating switch R. and connecting wires Y. to a continuous current
motor C¹ of less capacity than the continuous dynamo C. before mentioned.
The continuous motor is provided with a commutator G. secured on the
armature shaft B₁ and drives the alternating current dynamo A' of about equal
capacity fitted with collectors H and H' thereby enabling the last mentioned
dynamo to supply the outside demand during the time the engine is at rest, and by
these means a large plant can be kept economically running for say 12 hours a day
during the hours of maximum demand the remaining 12 hours of minimum demand
being carried on with the electric energy stored in the cells S. thus effecting a
saving of labour and depreciation over the existing methods of alternating current
supply.
°
Having now particularly described and
tion and in what manner the same is to
claim is :-
:-
ascertained the nature of this inven-
be performed, I declare that what I
1. The method of utilizing the maximum power of a steam engine generating
electricity by means of an alternating dynamo and the storing and distribution of
the surplus electric energy in the manner substantially as hereinbefore set forth.
2. The combination of the alternating and continuous dynamos A. and C. with
the accumulator cells S. for the purpose as hereinbefore described.
3. The combination of the accumulator cells S. with a continuous motor C¹ and
alternating current dynamo A' for the distribution of the stored electric energy
arranged substantially in the manner as hereinbefore described and shown.
Dated this 16th day of June 1892.
JOHN WAUGH,
Agent.