Improvements in Ships' and Analogous Telegraphic Apparatus.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Ships' and Analogous Telegraphic Apparatus.
I, WILLIAM CHADBURN, of 11, Waterloo Road, Liverpool, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:
This invention has reference to telegraphic apparatus for use on board ship, or
for analogous purposes, of the kind wherein the transmission of orders, notifica-
tions, and the like, is effected through or by rotary transmission mechanism, i.e. a
mechanism in which the transmission of each order, notification, or the like, is
effected through a revolution, or the greater part of a revolution, of a wheel or
crank, the transmission from the transmitting instrument to the receiving instru-
ment, being effected through bevel wheels and shafting, revolved by this wheel or
crank, or through sprocket wheels and chain, or equivalent transmission mechanism.
And it has special reference to the transmitting instruments of such telegraphic
apparatus, which for each transmission of an order, or the like, the wheel is
revolved one revolution, and the pointer or indicator on the receiver (and also on
the transmitter) is moved only a portion of a circle, which will depend upon the
number of order spaces into which the dials are divided; so that, practically, the
movement of the pointer is only a fraction of that of the transmitting wheel. And
the objects according to this invention are, mainly, to provide improvements by
which the transmitting instrument (and also the receiving instrument, when reply
telegraphs are used) will be of a simpler construction than those hitherto employed,
and may be adapted or applied with more or less special utility under certain
conditions, or for certain special purposes.
My invention will be described, mainly, as applied to a telegraphic apparatus for
communicating between the engine room and the stoke hold of a ship, such for
instance as those employed at present on Her Majesty's war ships, it being,
however, understood, that it may be also used with advantage for various other
analogous purposes and applications.
According to this invention, the operating means of a transmitting instrument
is a wheel and this wheel is mounted upon the same axis as the pointer or
indicator of the instrument; and while the wheel makes one revolution and drives
the transmission shafting, or primary transmitting toothed wheel, one revolution,
the pointer (which is preferably behind the wheel) is moved only a distance of one
order to another, which is a fraction of the whole circle; and it is driven from this
wheel, through toothed gearing, and reducing gearing, which gives the fractional
movement and which is of suitable intermittent type, so arranged that the whole
movement of the pointer is sharply done during, and by a part of the revolution of
the wheel, say about the middle of it. The gearing and shafting for this purpose
will be in concentric arrangement, to enable the two independent movements to
be effected, of the wheel, and the pointer.
The actuating wheel, under this invention, is a dial in itself, containing upon it
the orders, etcetera, say round the face of the rim, and division marks; and the

page_text: normal position of the wheel handle will be the point (which say is at the bottom)
to which the handle is always brought round, after every order is transmitted; and
according to which of the parts or orders of the wheel edge, the pointer points to,
or is opposite, that will be the order in question, and the one transmitted and
indicated by the receiving instrument.
The wheel rim is connected with the boss by spokes, thereby forming spaces
between them; and these spokes, or points, or marks at the ends of same, are the
limits of the respective orders. Thus, according to this part of the invention, the
actuating wheel also serves as the dial of the instrument.
In a modification, the transmitting instruments are also provided with a
stationary dial, as well as that on the wheel, having the required orders and
notifications upon it, over which the pointer, operated by the actuating wheel,
works and the spokes of the wheel may be coincident with the dial limits.
According to this construction, there will be a stationary dial containing
orders etcetera and orders upon the actuating wheel; whilst in another modification,
the fixed dial is the only one provided with orders or the like.
:
In the case of engine room and stoke hold, or like instruments, the axis of the
whole instrument and wheel is in horizontal plane, the instrument itself being
bolted to a bulkhead or other vertical surface; in which case, of course, the plane of
the actuating wheel is also vertical.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.
I, WILLIAM CHADBURN, of 11, Waterloo Road, Liverpool, in the County of
Lancaster, 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 reference to telegraphic apparatus for use on board ship, or
for analogous purposes, of the kind wherein the transmission of orders, notifications,
and the like, is effected through or by rotary transmission mechanism, i.e. a
mechanism in which the transmission of each order, notification, or the like,
is effected through a revolution, or the greater part of a revolution, of a wheel or
crank the transmission from the transmitting instrument to the receiving instru-
ment, being effected through bevel wheels and shafting, revolved by this wheel or
crank, or through sprocket wheels and chain, or equivalent transmission mechanism.
And it has special reference to the transmitting instruments of such telegraphic
apparatus, which for each transmission of an order, or the like, the wheel is
revolved one revolution, and the pointer or indicator on the receiver (and also on
the transmitter) is moved only a portion of a circle, the amount depending upon
the number of order spaces into which the dial is divided; so that, practically,
the movement of the pointer is only a fraction of that of the transmitting wheel.
And the objects according to this invention are, mainly, to provide improvements
by which the transmitting instrument (and also the receiving instrument, when
reply telegraphs are used) will be of a simpler construction than those hitherto
employed, and may be adapted or applied with more or less special utility under
certain conditions, or for certain special purposes.
My invention will be described, mainly, as applied to a telegraphic apparatus
for communicating between the engine room and the stoke-hold of a ship, such, for

page_text: instance, as those employed at present on Her Majesty's war ships; it being,
however, understood, that it may be also used with advantage for various other
analogous purposes and applications.
According to this invention, the operating means of a transmitting instrument is
a wheel; and this wheel is mounted upon the same axis as the pointer or indicator
of the instrument; and while the wheel makes one revolution and drives the trans-
mission shafting, or primary transmitting toothed wheel, one revolution, the
pointer (which is preferably behind the wheel) is moved only a distance of one order
to another, which is a fraction of the whole circle; and it is driven from this wheel,
through reducing gearing, which gives the fractional movement; and which is of
suitable intermittent type, so arranged that the whole movement of the pointer
is sharply done during, and by a part of the revolution of the wheel, say about the
middle of it. The gearing and shafting for this purpose will be in concentric.
arrangement, to enable the two independent movements, of the wheel, and the
pointer, to be effected.
The actuating wheel, under this invention, is a dial in itself, containing upon
it the orders, etcetera, say round the face of the rim, and division marks; and the
normal position of the wheel handle will be the point (which say is at the bottom)
to which the handle is always brought round, after every order is transmitted;
and according to which of the parts or orders of the wheel edge, the pointer points
to, or is opposite, that will be the order in question, and the one transmitted and
indicated by the receiving instrument.
The wheel rim is connected with the boss by spokes, thereby forming spaces
between them; and these spokes, or points, or marks at the end of same, are the
limits of the respective orders. Thus, according to this part of the invention,
the actuating wheel also serves as the dial of the instrument.
In a modification, the transmitting instruments are also provided with a
stationary dial, as well as that on the wheel, having the required orders and
notifications upon it, over which the pointer, operated by the actuating wheel,
works and the spokes of the wheel may be coincident with the dial order limits.
According to this construction, there will be a stationary dial containing
orders, etcetera and orders upon the actuating wheel; whilst in another modification,
the fixed dial is the only one provided with orders or the like.
In the case of engine room and stoke-hold, or like instruments, the axis of the
whole instrument and wheel is in the horizontal plane, the instrument itself being
bolted to a bulkhead or other vertical surface; in which case, of course, the plane
of the actuating wheel is vertical.
In the drawing hereto annexed, the invention is illustrated in connection
with a ships telegraph, such as are used for communicating between the engine
room and stoke-hold on Her Majesty's war ships, the drawing being a front
elevation, in Figure 1, and a cross section in Figure 2, of the transmitting instru-
ment. The receiving instrument will be of the usual or any suitable kind.
The instrument here shewn is of the construction herein referred to, in which,
in addition to the orders on the actuating wheel, which is a revolving order dial,
there is a stationary dial, with the required orders or notifications upon it, over
which the pointer works.
;
a is the general case or frame of the instrument, which is adapted to be secured
by the flange a¹ to a vertical surface-say a bulk head and b is the operating wheel,
mounted upon an axle c, supported in the frame. This wheel has at or near its
rim, an annular plate or part d, on which words, representing the various orders
or notifications to be transmitted by the instrument, are formed or attached. The
wheel and the set of orders, etcetera, on it, must have a normal position of rest,
and this may suitably be that when the handle b¹ is in a vertical line through the
wheel axis, as shewn in the drawings.
e is the pointer, which is mounted concentrically, and loosely, on the axis of the
instrument, and adapted to revolve past the orders of the instrument as it is
worked.

page_text: f is the stationary dial of the instrument, on the face of which a second set of
orders or notifications, identical with those on the wheel, are provided; and they
are so disposed that they are within the same radial lines, i.e. opposite, the same
orders or words in the annular dial d of the wheel b, when the actuating handle b¹
is at its place of rest, viz., in the lower position.
The actuating wheel has arms 62, and they are so arranged as to correspond with
the divisions between the fields of the several orders of the dial f, and to stand
over these divisions when the wheel is in the normal position of rest. So the
spaces through the wheel, between the arms and the annular dial d, constitute
so many windows, through which pointer e, and the orders on the dial f, can be
seen.
On the spindle c, actuated by the wheel b, the bevel wheel his fixed, and through
this wheel the transmission of orders or notifications is sent to the stoke-hold, or
other place; or, in lieu of this mode of transmission, the orders may be directly
transmitted to the receiving instrument by the shaft c, or by other suitable means.
In any case, the amount of movement of the transmission gear will be reduced in the
receiver to that required, in any known suitable way.
As each order to be transmitted, is effected by one complete revolution of the
wheel b, the shaft c will receive one complete revolution; but the pointer e must
receive for each revolution of the wheel b only the fraction of one revolution, viz.,
one sixth of a revolution in the case shewn, which is equivalent to the number of
spaces into which the order dials are divided, and to the degrees apart at which
the order divisions are pitched. This is effected by reducing gear in the instru-
ment; the gear shewn being of the intermittent type, whereby a movement of sixty
degrees of the pointer from order to order, would be effected suddenly, and during
a fraction of one revolution of the actuating wheel and shaft. And this movement
should be arranged to take place while the handle of the wheel b is traversing the
upper half of the revolution.
The mechanism used for this purpose is of a well known type, similar to the
"Geneva stop" mechanism, and consisting of a notched wheel outside the
shaft c, and a wheel j fixed on e, having a single tooth j; which tooth engages
with a notch of the wheel each revolution, and revolves the wheel i a distance equal
to the pitch of the notches in it, the degrees apart and number of which, correspond
with those of the orders of the instrument. This amount of movement which the
wheel receives each revolution of the wheel b, is transmitted to the pointer.e,
through the toothed pinions kk, which are of equal diameter. The toothed pinion k
is connected with, or in one with the wheel i, the axis of which wheels is parallel
with the axis of c, while the wheel --which meshes with k-is loosely mounted on
the shaft c. On the boss or hub 2, outside the dial f, the pointer e is fixed; and
this boss serves as the journal of the wheel ¹, being borne in the neck bearing 1,
which is supported from the frame a, by arms 1, attached to the frame inside.
These arms also support the axle o of the wheels ik, by a bracket 2 thereon, as
shewn in Figure 2.
It will be seen, that while this wheel is borne by, and revolves in the bearing 7,
the boss of this wheel, serves as 'the bearing for the outer end of the shaft c;
the other, end being borne by the neck bearing a² of the case.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A transmitter of a ships' or analogous telegraphic apparatus of the type in
which each order, notification, or the like, is transmitted by a revolution of its
actuating part or device, comprising an actuating wheel, having upon it, in due
arrangement, the orders, notifications, or the like; and a pointer or indicator having
circular movement about the axis of the wheel, and operated thereby through
reducing gear, and having a movement equal only to the pitch apart of the
orders, etcetera, on the wheel; substantially as set forth.

page_text: 2. A transmitter of a ships' or analogous telegraphic apparatus of the type in which
each order, notification, or the like, is transmitted by a revolution of its actuating
part or device, comprising an actuating wheel, having upon it, in due arrangement,
the orders, notifications, or the like; a pointer or indicator having circular move-
ment about the axis of the wheel, and operated thereby through reducing gear,
and having a movement equal only to the pitch apart of the orders, etcetera, on
the wheel and a stationary dial, also having upon it the orders, notifications, or
the like; the same orders, etcetera, on the wheel dial and the stationary dial being
arranged to be in line with each other, radially, when the actuating wheel is in
the normal position of rest; substantially as set forth.
3. A ships or analogous telegraphic transmitter of the kind herein referred to,
having in combination, the actuating dial wheel b on the shaft c, a stationary dial f,
a loose pointer e concentric with the shaft c, and reducing gearing introduced
between the shaft and the pointer; substantially as set forth.
4. The transmitting instrument of a ships' or analogous telegraphic apparatus,
particularly as shewn in, and set forth with reference to the drawings.
Dated this 30th day of December 1898.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.