Year: 1887

page_text: Date of Application, 26th Mar 18 7
Complete Left, 24th Dec., 1887
Complete Accepted, 27th Jan.. 1888
do hereby declare the nature of this invention to be as follows :—
This invention has for its object improvements in electric telegraph apparatus and
the improvements relate to syphon recording instruments used with submarine telegraph
cables.
The magnetic field in which the small swinging coil of insulated wire of such
instruments is usually suspended 1 form with permanent horse shoe magnets laid
horizontally one over the other-1 make each magnet with a semi-circular curve in
the middle and the two arms extending from the ends of this curve Lincline one towards
the other and bring their ends or poles cach to a narrow surface one to come on one
side of the swinging coil and the other on the other and in close proximity to it.
Preferably I make the outer contour of each magnet mearly a complete circle of which
the outer circumference of the semi-circular bend forms part. The inner contour is
formed by the inner circumference of the semi-circular bend and straight surfaces
inclining towards one another from the semi-circular bend to the narrow extremity
of the pole piece.
The magnets may he piled one above the other to any desired height and may be
made to extend both above and below the swinging coil and those which are above
and below the coil I form with shorter arms or limbs so that their poles are not brought
so close together as in the other magnets.
A sufficiently powerful magnetic field is in this way very conveniently
obtained.
The coil is suspended in a vertical plane preferably by a single threat passing
from it at the top and by two threads passing downwards from it at the bottom-
the two threads being at a short distance apart. These latter threads are led under
a guide and then partly over the circumference of a screw and downwards to a weight
suspended on lower end.
The two threads can be set at any desired distance apart-that is with any desired
number of screw threads between them to adjust the freedom with which the coil is
allowed to oscillate and by turning the screw both can be moved together in one
direction or the other so as to adjust the position of the coil.

page_text: The syphon pen is as usual carried by a stretched thread which allows it to oscillate
freely one limb dips into an ink reservoir the other comes opposite the travelling
strip of paper. The ink is ejected from the end of the syphon pen by imparting a
vibrating motion to it as described in the Specification of a former Patent granted to
me No. 6229 in the year 1885.
The pen receives movement from the swinging coil by threads passing from the
coil and through levers to multiply the movement.
The iron core which occupies the centre of the coil is carried on a slide which can be
moved end wise to move the core inwardly into the coil or outwardly from it by a lever
acted on by a screw so as to be able to adjust the position of the core.
Dated this 26th day of March 1887.
CARPMAEL & Co.,
Agents for the Applicant.
Improvements in Electric Telegraph Apparatus.
I, WILLIAM DICKENSON, of Hearts Content, Newfoundland, Electrical Engineer,
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 improvements in electric telegraph apparatus and
the improvements relate to syphon recording instruments used with submarine telegraph
cables.
The magnetic field in which the small swinging coil of insulated wire of such
instruments is usually suspended I form with permanent horse shoe magnets laid
horizontally one over the other. I make each magnet with a semi-circular curve
in the middle and the two arms extending from the ends of this curve 1 incline one
towards the other and bring their ends or poles each to a narrow surface one to come
on one side of the swinging coil and the other on the other and in close proximity to
it. Preferably I make the outer contour of each magnet nearly a complete circle of
which the outer circumference of the semi-circular bend forms part. The inner contour
is formed by the inner circumference of the semi-circular bend and straight surfaces
inclining towards one another from the semi-circular bend to the narrow extremity of
the pole piece.
The magnets may be piled one above the other to any desired height and may be
made to extend both above and below the swinging coil-and those which are above

page_text: and below the coil I form with shorter arms or limbs so that their poles are not brought
so close together as in the other magnets.
A sufficiently powerful magnetic field is in this way very conveniently
obtained.
The coil is suspended in a vertical plane preferably by a single thread passing from
it at the top and by two threads passing downwards from it at the bottom--the two
threads being at a short distance apart. These latter threads are led under a guide
and then partly over the circumference of a screw and downwards to a weight
suspended on lower end.
The two threads can be set at any desired distance apart-that is with any desired
number of screw threads between them to adjust the freedom with which the coil is
allowed to oscillate and by turning the screw both can be moved together in one
direction or the other so as to adjust the position of the coil.
The syphon pen is as usual carried by a stretched thread or wire which allows it to
oscillate freely- one limb dips into an ink reservoir the other comes opposite the
travelling strip of paper. The ink is ejected from the end of the syphon pen by
imparting a vibrating motion to it as described in the specification of a former patent
granted to me No. 6229 in the year 1885.
The pen receives movement from the swinging coil by threads passing from the coil
and through levers to multiply the movement. The paper is caused to be moved past
the pen by clockwork such as is used in an ordinary Morse instrument.
The iron core which occupies the centre of the coil is carried on a slide which can be
moved endwise to move the core inwardly into the coil or outwardly from it by a lever
acted on by a screw so as to be able to adjust the position of the core.
The drawings hereunto annexed show apparatus constructed as above described.
Figure 1 is a plan view. Figure 2 a side elevation partly in section and Figure 3
an end view of the apparatus. Figure 4 is a vertical transverse section. Figure 5 a
plan view of part of the apparatus showing the way in which the position of the roller
over which the paper passes can be adjusted.
A A are the permanent horse shoe magnets formed in the manner above described.
B is the coil which swings in the magnetic field. B' is a soft iron bar which can be
thrust forwards or backwards so that it may be made to extend more or less into the
coil. The mechanism for carrying the bar and shifting it endwise to or fro is shown
at Figures 6. B2 are light spiral conductors leading to the ends of the coil. C is a
thread by which the coil B is suspended--it passes up to a wheel D which can be
revolved and caused to wind on more or less of the thread and so adjust the height
at which the coil is suspended. E E are two threads passing downwards from the coil
to two weights E*E* they are also led under a guide roller F and partly over the
circumference of a screw thread G. As above stated the distance apart of the lower
ends of the two threads can be adjusted by shifting either thread from one screw
thread to another and the screw can be turned by a milled head upon it to simul-
taneously adjust the position of both threads. H is the syphon pen carried by a
twisted thread or wire I. One limb of the syphon dips into the ink reservoir J the
end of the other limb comes opposite to the travelling strip of paper on which the
message is to be recorded. The paper is drawn off from the reel K* and made to
travel continuously past the pen by the clockwork contained in the case K-this
clockwork is constructed in the same way as in any ordinary well known Morse
instrument.
The paper is made to pass over the roller S then over the bulging surface T and
under the roller U and the end is opposite to the paper where it is supported by the
bulge T.
The pen is connected to the swinging coil by a thread L passing from it to the
extremity of a lever M which lever at a point near to its axis is connected by a
thread N to one side of the coil. When the coil is turned in one direction it exerts
a pull on the thread and pulls the lever over towards itself-and when the coil turns
in the opposite direction the lever is drawn back by the action of the twist put upon
the thread I by which the pen is suspended.

page_text: motion to cause a flow of ink
It is connected by a thread O
A pull upon the thread bands
the material of which the stem
The way in which the pen receives a rapid vibrating
to be ejecied from it is seen in the end view Figure 3.
to the trembling armature P of an electro magnet R.
the stem of the pen in one direction and the spring
is formed tends to turn it in the opposit direction.
Various other details of the apparatus as I prefer to construct it are shown in the
drawing but as these form no part of my present improvements it is unnecessary to
give any description of them.
'
By constructing the apparatus in the manner herein before described and with the
paper moved by clockwork independently of the electrical mechanism used for giving
movement to the pen a very compact instrument is obtained occupying but little
space.
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
1 claim is
1. In syphon recording instruments the use of permanent horse shoe magnets
laid horizontally one over the other and formed substantially as herein before
described for forming the magnetic field in which the swinging coil oscillates
whereby a powerful magnetic field is obtained with the magnet occupying hut
little space.
2. The iron core capable of being moved into or from the interior of the swinging
coil.
3. The construction of recording electric telegraph apparatus substantially as herein
before described and illustrated in the drawings annexed.
Dated this 23rd day of December 1887.
CARPMAEL & Co.,
Agents for the Applicant.