Improvements in Electrical Vibrators for Telegraphic and other Purposes.
Year: 1898

page_text: Date of Application, 18th Apr., 1898
Complete Specification Left, 13th Jan., 1899-Accepted, 4th Mar., 1899.
Improvements in Electrical Vibrators for Telegraphic
and other Purposes.
THOMAS HARVEY, Waterville, County Kerry, Ireland, Mechanician to Com-
mercial Cable Company, do hereby declare the nature of this invention to be as
follows:-
-
The object of my invention is to obtain by means of an electro-magnet and
armature, with the usual make and break contact, a period of vibration for the
armature corresponding to that of any other vibrating body with which the electro-
magnet is in electrical circuit; as, for example, the glass siphon used in the record-
ing instruments on submarine cables.
In my invention,, this object is accomplished in a simple and rapid manner,
and the required adjustments can be made without arresting the vibrating
armature.
One form in which I have constructed an instrument for vibrating a siphon for
submarine cable working is shown in the drawing-Figure 1, is the front elevation ;
Fig. 2, the end elevation, looking at Fig. 1 from the right, Fig. 3, is the back
elevation, the reverse of Fig. 1, Fig. 4 is the end elevation, looking at Fig. 3,
from the right.
The base A is a metal block with a slot running through so that it can be
placed where desired and clamped by the binding screw and jamb nut B.
The pillar C is attached to the base A, and on the circumference an anti-spark
coil is wound. On the top of pillar C is placed the electro-magnet D, which is
made with two coils with iron cores fixed on to a piece of iron bent to a right
angle, and holds them in position on top of pillar C, by means of a screw, as shown.
The part E is a sliding base, and the milled head G which has a screw con-
tinuing from it passing through the end of said sliding base E, and screws into
the base block A, a small collar is fixed on screw by a pin, as shown in elevation
Fig. 3, at H, so that when the milled head G is turned to right or left, the sliding
base E moves backwards or forwards.
On the side of sliding base E an oblong slot is cut to allow the screw from jamb
nut F to pass through and screw into base block A. Five views of sliding base E
is given below, the front elevation Fig. 1, E1 is a front view, E2 and E3 are the
end views; E4 is the plan, E5 is under view.
Two
On the top of sliding base E stands the armature K which is held in position by
a screw passing through the small right angle piece at end of. armature.
small collars are fixed on armature, the lower one carrying the make and break
contact. A thin rod, with a small ball at top end, is free to pass through the
collars on armature, and continue through the sliding base E.
Two views of armature are shown under end elevation Fig. 2; one is a section
view; under them is shown the thin rod with ball; the lower half of this rod is
screwed with a fine thread, or cut as a rack.

page_text: .
Passing through the side of sliding base E is a milled head pin, with either a
pinion or an india rubber tube slipped over acting as a pinion. This is held in
position against the screw on rod by the bearing block L; this bearing being
inoveable backwards or forwards on the sliding base E. By moving it back the
pinion can be taken out. The bearing is clamped by a screw passing through the
top of sliding base E.
Four views of bearing block are shown under the back elevation Fig. 3, and
section view of india rubber pinion is indicated.
At the right hand end of sliding base E is fixed an upright piece M insulated
by a thin piece of vulcanite or other suitable insulator N, and where the screws
pass through there are two vulcanite collars.
At the top end of upright piece is fixed a right angle piece which holds the make
and break contact screw P; one half of this screw is squared, and slides in a square
hole made in angle piece to suit. The hole in upright piece is made to clear the
screw, so that it can move backwards or forwards without turning. The manner
in which this is done is by a worm adjustment. R is a small disc, with a screw cut
on its circumference; this is held in position between the angle piece and the up-
right, with the contact screw passing through its centre, so that when the disc R
is turned the screw is moved forward or backward. Under disc R, a screw with
a milled head is held in position by the bearing block S. The thread on this
milled head screw is of the same pitch as that cut on the edge of the disc R. When
this milled head screw is turned, it turns the disc R which moves the contact screw
backward on forward, as desired, and forms a very useful and necessary adjust-
ment.
The electrical connections are as follows: The electro-magnet coils are wound
in the usual manner. One end is joined to the metal of the instrument, the other
is fixed to terminal T. The anti-spark coil, which is wound on the pillar C, may
be joined either as a shunt across the electro magnet, or across the make and break
contact, as preferred. Connected to terminals T, and T1 on the upright M, are
joined the battery wires. When the electrical circuit is made the armature K
vibrates by the attraction of magnet, and by turning the milled head G, the
armature is moved nearer or further away from the magnet; then by turning the
milled head to which the india rubber pinion is fixed, the rod and ball are raised
or lowered so as to quicken or slow the period of vibration.
By joining wires to terminals T and T2 while the vibrator is in motion, it will
convey a vibration to other electrical devices.
Dated this Fifteenth day of April 1898.
Improvements in Electrical Vibrators for Telegraphie
and other Purposes.
THOMAS HARVEY, Waterville, Co. Kerry, Ireland, Mechanician to the Commercial
Cable Company, 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:-
-
•
The object of my invention is to obtain by means of an electromagnet and
armature, with the usual make and break contact, a period of vibration for the
armature, corresponding to that of any other vibrating body with which the electro-
magnet is in electrical circuit; as for example, the glass siphon used in the record-
ing instruments on submarine cables.

page_text: In my invention this object is accomplished in a simple and rapid manner, and
the required adjustments can be made without arresting the vibrating armature.
One form in which I have constructed an instrument for vibrating a siphon,
for submarine cable working, is shown in the drawing-Fig. 1, is the front
elevation; Fig. 2 the end elevation, looking at Fig. 1, from the right; Fig. 3 is
the back elevation, the reverse of Fig. 1. Fig. 4, is the end elevation, looking at
Fig. 3 from the right. The base A is a metal block with a slot running through,
so that it can be placed where desired, and clamped by the binding screw and
jamb nut B.
armature.
The pillar C is attached to the base A, and on the circumference an anti-spark
coil is wound. On the top of pillar C is placed the electromagnet D, which is made
with two coils with iron cores fixed on to a piece of iron bent to a right angle, and
holds them in position on top of pillar, by means of a screw, as shown. The
part E is a sliding base, and the milled head G, which has a screw continuing from
it, passing through the end of said sliding base E, and screws into the base block A,
a small collar is fixed on screw by a pin, as shown in elevation Fig. 3 at H, so
that when the milled head G is turned to right or left, the sliding base E moves
backwards or forwards. On the side of sliding base E an oblong slot is cut to
allow the screw from jamb nut, F to pass through and screw into base block A.
Five views of sliding base E are given below the front elevation Fig. 1, E1 is
the front view; E2 and E3 are the end views; E4 is the plan; E5 is under view.
On the top of sliding base E stands the armature K, which is held in position by
a screw passing through, the small right angle piece at end of
Two small collars are fixed on armature, the lower one
carrying the make and break contact. A thin rod with a small ball at top
end is free to pass through the collars on armature, and continue through the
sliding base E. Two views of armature are shown under end elevation Fig. 2;
one is a section view; under them is shown the thin rod with ball; the lower half
of this rod is screwed with a fine thread, or cut as a rack; passing through the
side of sliding base E is a milled head pin with either a pinion or an indiarubber
tube slipped over, acting as a pinion. This is held in position against the screw on
rod by the bearing block L; this bearing being moveable backwards or forwards
on the sliding base E. By moving it back the pinion can be taken out. The
bearing is clamped by a screw passing through the top of sliding base E. Four
views of bearing block are shown under the back elevation Fig. 3, and section
view of indiarubber pinion is indicated. At the right hand end of sliding base
is fixed an upright piece M, insulated by a thin piece of vulcanite, or other suit-
able insulator N, and where the screws pass through there are two vulcanite
collars.
At the top end of upright piece is fixed a right angle piece which holds the
make and break contact screw P; one half of this screw is squared and slides in
a square hole made in angle piece to suit. The hole in upright piece is made to
clear the screw, so that it can move backwards or forwards without turning. The
manner in which this is done is by a worm adjustment. R is a small disc with a
screw cut on its circumference; this is held in position between the angle piece and
the upright, with the contact screw passing through its centre, so that when the
disc R is turned the screw is moved backwards or forwards. Under disc R a screw
with a milled head is held-in position by the bearing block S. The thread on this
milled head screw is of the same pitch as that cut on, the edge of the disc R.
When this milled head screw is turned, it turns the dise R which moves the contact
screw backwards or forwards, as desired, and forms a very useful and necessary
adjustment.
The electrical connections are as follows:-The electromagnet coils are wound
in the usual manner. One end is joined to the metal of the instrument, the other
is fixed to terminal T. The anti-spark coil, which is wound on the pillar C, may
be joined either as a shunt across the electromagnet; or across the make and break
contact, as preferred. Connected to terminals T and T1, on the upright M are

page_text: joined the battery wires. When the electrical circuit is made, the armature K
vibrates by the attraction of magnet, and by turning the milled head G the armature
is moved nearer or further away from the magnet; then by turning the milled
head to which the indiarubber pinion is fixed, the rod and ball are raised, or
lowered, so as to quicken or slow the period of vibration.
By joining the wires to the terminals T and T2, while the vibrator is in motion,
it will convey a vibration to other electrical devices.
The drawing sent with Provisional.
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:
1. I claim the particular combination described in my specification, whereby I
am able to alter the rate of vibration of an armature actuated by an electromagnet,
by raising or lowering a projecting weight, without, arresting the vibrator.
Dated this Eleventh day of January 1899.
THOMAS HARVEY.