Year: 1886

page_text: Date of Application, 1st Feb., 1886.
Complete Left, 1st Dec., 1886.
Complete Accepted, 5th Jan., 1887. -
JOHN JULIUS EBEL Julia Cottage Charlton Lane New Charlton in the County
of Kent Electrician, do hereby declare the nature of my said invention to be as
follows:
This Invention has for its object to increase the speed of signalling through
submarine telegraph cables or other telegraphic circuits.
I obtain this object by applying a method of connecting a condenser in a telegraphic
circuit between the coils of the receiving instrument instead of before or after it as
has hitherto been the practice. By this means it is purposed to take advantage of the
induction between the coils to assist the discharge and neutralise the extra current
developed in the said coils.
The coils are wound in a manner best adapted to the object in view which is effected
by dividing the coil of the receiving instrument into two or more parts and inserting
the condenser or condensers between the said parts so that one plate is discharged
through one part of the coil to earth and the other through the other part to cable.
The second part of my Invention refers to a similar method of connecting up a
condenser having three plates (or its equivalent to condenser with one plate of each
joined) for duplex working (i.e. in opposite directions simultaneously). In this case
the middle plate is charged by the sending current and the opposed plates discharge
themselves each through half of the coils of the receiving instrument which are so
wound that when no current is being received from the distant end of the line their
effects neutralise each other. I propose to compensate for any inequality in the rate
of absorption of the condenser plates by providing means of inserting resistance in
one or other half of the instrument coils or by making the influence of the coils on
the needle or magnet adjustable by moving them to or from the said needle.

page_text: COMPLETE SPECIFICATION.
Improvement in Electro Telegraphic Apparatus.
I JOHN JULIUS EBEL of Julia Cottage Charlton Lane New Charlton S.E. do
hereby declare the nature of my said 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 to increase the speed of signalling through
submarine telegraph cables or other telegraphic circuits.
I obtain this object by applying a method of connecting Condensers in a Telegraphic
circuit between the coils of the receiving instrument instead of before or after it as
has hitherto been the practice. By this means it is proposed to take advantage of the
induction between the coils to assist the discharge and neutralise the extra current
developed in the said Coils.
The coils are wound in a manner best adapted to the object in view which is effected
by dividing the coil of the receiving instrument into two or more parts and inserting the
Condenser or Condensers between the said parts so that one plate is discharged through
one part of the Coil to earth and the other through the other part to cable.
The Second part of the Patent refers to a similar method of connecting up a
Condenser having three plates (or its equivalent two condensers work one plate of
each joined) for duplex working (i.c. in opposite directions simultaneously). In this
case the middle plate is charged by the sending current and the opposed plates
discharge themselves each through half of the coils of the receiving instrument which
are so wound that when no current is being received from the distant end of the line
their effects neutralise each other. I propose to compensate for any inequality in the
rate of absorbtion of the condensing plates by providing means of inserting resistance
in one or other half of the instrument coils or by making the influence of the coils on
the needle or maguet adjustable by moving them to or from the said needle.
DESCRIPTION OF DRAWINGS.
Fig. I and II illustrates the arrangement of apparatus in accordance with the first
part of my invention.
In Fig. I R is a Receiving Instrument such as a Mirror or Recorder or such other
Instrument working in Submarine telegraph circuits.
The Instrument is supplied with a Bobbin wound in two parts a and b.
C is the Receiving Condenser its upper plate is discharged through coil a towards
cable and the lower one through coil to earth.
In Fig. II I obtain the same result by employing two Condensers c² and c².
between coil b and earth.
C is placed between coil a and the cable and
Fig. III and Fig. IIII illustrates the continuation of the divided Bobbin with
Condenser arranged for working the duplex system the coils are wound either in equal
parts or in unequal parts in such capacity or in such a manner as may be found best
to obtain the desired result.

page_text: In Fig. III the Signalling Key is connected to coils a and b dividing the current in
the two equally balanced circuits X and Y.
Branch Y consists of coil a condenser c¹ and cable the other branch X coil b
condenser e* and the artificial cable.
Accurate adjustment of the balance is effected by adjustable resistances placed
between artificial cable and condenser c².
I sometimes place such adjustable resistances between Condenser c¹ or c² and its
corresponding coils u or b.
Fig. IIII shows another arrangement for working duplex and reference to my
invention described in the second part of my Specification.
In carrying this part of my invention into practice I employ a sending condenser
having three plates the middle plate c is charged by the sending key and its opposite
plates 1 and 2 which are adjusted to equal absorbtion discharge themselves each
through its corresponding coil a and b.
Cis the Receiving Condenser sometimes arranged adjustable variable resistances
are also employed in the Circuit for adjusting the balance of the two branches X and Y.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
Firstly I claim the combination of the differentialy divided Bobbin or a Coil
divided in parts acting in the Receiving Instrument in Combination with Condensers
arranged so that one Condenser or one plate of a Condenser is discharged through
one part of the coil to the earth and the other through one part of the coil to the cable
acting in such a manner that the induction between the two coils assist the discharged
and neutralises the extra current developed in the aforesaid Coils.
Substantially in the manner and for the purposes hereinbefore described and
illustrated in the accompanying drawings.
Secondly I claim the combination of the divided Bobbin aforesaid with a Condenser
having three plates or its equivalent or two Condensers with a plate at each joint for
duplex working.
Substantially in the manner and for the purposes hereinbefore described and
illustrated in the accompanying Drawings.
Lastly I claim the general arrangement and combination of the electrical apparatus.
Substantially in the manner and for the purpose described and illustrated in the
accompanying Drawings.