IMPROVEMENTS IN THE TRANSMISSION OF ELECTRIC CURRENTS BY SUBMARINE CABLES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I FERDINAND BOSSHARDT of the firm of Bosshardt & Grant, Mechanical &
Consulting Engineers and Patent Solicitors of 24 & 32 Bulls Head Exchango
Chambers, Market Place Manchester in the County of Lancaster, do hereby declare
the nature of my Invention for IMPROVEMENTS IN THE TRANSMISSION OF ELECTRIC
CURRENTS BY SUBMARINE CABLES, communicated to me from abroad by Messieurs
Hermitte & Payroulou of Alger in the Republic of France, to be as follows:-
My invention relates to improved means for automatically transmitting electric
currents by sub marin cables, applicable to the recording apparatus, system
Thompson" and has for its object to bring the electric currents alternately into
contact with the cable, by means of the Application and Combination with the
Signal System "Morse."
To this end a band suitably perforated, representing the signals of the system
"Morse" is engaged between and drawn by two rollers, accuated by a clock work,
at a uniform speed.
A play of two needles being employed and caused to move up and down and
engage with perforations on the right and left side of the band, by means of a
spiral spring, which needles when engaged with the perforations, will produce an
audible, mechanical, repeating of the same."
.
If the shocks thus produced, are employed at a certain fixed point and in con-
nection with prolonged needles, the same will repeat exactly, the same motion as
before, only in a reversed way.
A local battery used in connection, has one pole attached to a solid bar, provided
with two screws, which are in direct communication with the top of a lever above
and the top pole with each of such levers.
When the band.is in motion and the needles meet, the perforations, the needles
will spring from one edge of the band to the other and cause thereby a raising of
the lever, until the latter come's into contact with the top part of the same, which
closes the current of the local battery.

page_text: If it is desirous of employing a double apparatus, the same would be composed
of two electro magnets and two top and two bottom rests, connected together.
The electro magnet is on one side brought in connection with the cable and on
the other side, with the earth.
.
The top rest leads the positive or negative current to the battery and the bottom
rest, the opposite current to the cable.
When any of the electro magnets are brought into independent operation, an
electric current is produced, which is closed again, at the moment, when one of the
needles meet's a holes, on account of the lever coming into contact with the top
rest.
A positive current of any electro magnet and double transmitter, is leading to
the cable during the other electro magnet is at rest, and will cause the negative
current, to enter the earth and vis versa.

page_text: COMPLETE SPECIFICATION.
I, FERDINAND BOSSHARDT of the firm of Bosshardt and Grant, Mechanical &
Consulting Engineers and Patent Solicitors of 24 & 32 Bulls Head Exchange
Chambers Market Place Manchester in the County of Lancaster do hereby declare
the nature of my invention for "IMPROVEMENTS IN THE TRANSMISSION OF ELECTRIC
CURRENTS BY SUBMARINE CABLES which has been communicated to me from
abroad by Messrs Hermitte & Payroulou of Alger in the Republic of France and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:—
"
My invention relates to improved means for automatically transinitting electric
currents by submarine cables applicable for recording apparatus, system Thompson,
and has for its objects to bring the electric currents alternately into contact with
the cable by means of the application and combination with the signal code Morse.
And in order that my invention may be better understood I have caused to
be appended hereunto one sheet of drawings marked with letters of reference'
corresponding letters indicating like parts in various figures.
Figs 1, 2 and 3 are detached views in perspective. Fig -4. is a side elevation of
a double relay apparatus and Fig 5 shows the combination of the latter with
signal code Morse.
To this end (see Fig 1) a band c suitably perforated, representing the signal code
morse is engaged between and drawn by two rollers d'actuated by any suitable
clock work at a uniform speed.
A set of two needles e (see Figs 2 & 3) are employed, rocking on a bar o and
caused to move up and down and engage with the perforations p on the right and
left side of the band c by means of a spiral spring which needles when engaged
with the perforations will produce an audible mechanical repeating of the same.
If the shocks thus produced are transmitted at the fixed point or bar o and
communicated to the prolongations a and b of the needles e, the prolongations
and 6 will exactly repeat the motion of the needles e in a reversed way. A local
battery PL see Fig 3, of a few elements employed, has one pole attached to a solid
bar m provided with two screws B and B' which are in direct communication
with the levers or prolongations a and b. the other poles are connected with each of
such levers or prolongations.
When the band is in motion the needles meeting such perforations will spring
from one edge of the band to the other and cause thereby a raising of the levers or
prolongations until the latter come into contact with the longer screw which closes
the current of the local battery.
If a double relay apparatus, see Fig 4. is to be constructed and employed, such
will consist of two electro-magnets f. two armature levers i, two top rests g which
latter are attached to the top of a small pillar, and two bottom rests h fixed to the
base of the relay between the electro-magnets f.
The top and bottom rests g and h are compounded by metallic means.

page_text: One of the armature levers i is brought into connection with the cable and the
other into connection with the earth.
The top rests g lead the positive or negative current and the bottom rests the
opposite current to the same battery for transmission to the cable.
When any of the electro magnets are inserted independently into the cycle of
current, consisting of the local battery, needles levers or prolongations (see Fig 3),
an electric attraction is produced of that armature which corresponds with one of
the two electro magnets, which current is broken again at the moment when one
of the needles meets a hole, on account of the lever coming into contact with the
top rest.
If any of the armatures of the double relay, are led onto the cable by the
reduction of such armature, a positive current, while the other armature is at rest,
leads the negative current into the earth and vicê versâ, for transmission of the
negative current onto the cable.
It will therefore be understood that by the combination represented in Fig 5,
consisting of the arrangement of needles, prolongations etc, as illustrated in Fig 3
with the double relay as shown in Fig 4. it is rendered possible to perform auto-
matically, the transmitting with the fingers the currents onto the cables, alternately,
by means of the signals, code Morse.
Having now particularly described and illustrated the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim, is
.
CLAIM.
Transmitting electric currents automatically by sub-marine cables by means of
the combination, represented by Fig 5, consisting of the arrangement of the
needles e, prolongations a and b, bars o and m battery Pl and screws B and B¹,
with the double relay as shown by Fig 4 and the signals of code Morse, for