Improvements in PROVISIONAL SPECIFICATION. or connected with Telegraphic Apparatus, applicable for use in Navigable Vessels and analogous purposes.
Year: 1890

page_text: Date of Application, 22nd Jan., 1890
Complete Specification Left, 22nd Oct.. 1890-Accepted, 10th Jan., 1*91
Improvements in
PROVISIONAL SPECIFICATION.
or connected with Telegraphic Apparatus,
applicable for use in Navigable Vessels and analogous
purposes.
I, WILLIAM CHADBURN, of 11 Waterloo Road, Liverpool, in the County of
Lancaster, Telegraph Engineer, do hereby declare the nature of my said invention to
be as follows:
My present inventi relates more particularly to that type of telegraphic apparatus
which is used on board ship, and analogous places or circumstances, for transmitting
orders, notifications, or conditions, or positions of various moving parts of mechanisms
from one part of a ship or other structure to another or others. Some of this type of
telegraphic apparatus or instruments are termed or known as Engine room
Telegraphs," "Steering Telegraphs," Docking Telegraphs," "Look-out Telegraphs,"
"Turret Telegraphs,"
"Gun Telegraphs," Stoke hole Telegraphs" and so on.
99 65
"
In this type of telegraphic apparatus, by the operation of one instrument (the
transmitting instrument) by a suitable actuating handle, lever, wheel, or like device,
at one point or position of a ship or structure, a pointer, or an equivalent indicating
device, of another instrument (the receiving instrument) is moved or caused to move
over or in connection with a dial having upon it words, letters or figures representing
orders or other notifications, and denotes the order or other notification transmitted;
or conversely to the above, the dial may be moved and the pointer or indicating
device be stationary.
Now the chief object of my present invention is to work the pointer or indicating
device and the dial in relation to each other in such a manner that the orders or
notifications transmitted from one instrument to another shall be indicated in or by
the instrument receiving them in a correct, clear, and unmistakable manner.
According to this invention the above end is effected by causing the moving part,
whether it be the pointer or the dial, to move automatically, and to the full correct
and desired distance and point, by a partial movement of the means, device, or
medium on which it (the dial or pointer) is mounted or by which it is operated. That
is to say, if, by the means, device, or medium by which a notification is transmitted
from one instrument to another, the full effect of the operation of the transmitting
instrument is not imparted to the part of the receiving instrument by which the
pointer or dial is moved, the complete and desired movement of such pointer or dial
will be automatically effected by a device in connection with such pointer or dial;
and by this mode of working and by this means, small, or even very considerable,
defects or irregularities in the apparatus due to the defective adjustment of parts, or to
stretching, torsion, or other straining of rods, cords, conduits, and so on, are rendered
of no effect as regards the full and correct movement of the pointing or indicating
mechanism, or in other words, the indication in and by the receiving instrument is
rendered independent of the correct movement being given the pointing gear and
unmistakable.
"
As an example of an application of my invention, I will describe a mechanical
communicating apparatus operating according to, and provided with my improve-
ments, and suitable for use in navigable vessels, for, say, communicating between the
bridge" and the engine room, or similar use; and for the sake of simplicity and
clearness it will be assumed that the apparatus is of the ordinary kind or type having
transmitting and receiving instruments provided with actuating handles, fixed dials,
moving pointers, and gongs or sounding devices, and that the movement of the one
instrument is communicated to the other by means of chains, cords or rods.
In such an example, the pointing gear is provided with a device by which when
π

page_text: such gear has been moved only a portion of the full and required stroke for an order,
the pointer is caused to move up to the correct position, and thus, whether the pointer
gear worked by the chain rod or other means of transmitting is further positively
moved by such chains or rods, or not, the pointer will be automatically moved to the
correct extent and position, and will thus render the order unmistakable. Thus it will
be evident that deficiencies or irregularities of movement due to stretching, torsion,
bad fitting, or other analogous cause, which frequently occur, or exist in this kind of
telegraphic apparatus, are by this invention obviated.
In the ordinary form of receiving instrument this automatically operating device
may consist of a star wheel mounted on the shaft operated by the transmitting chain
or rods, and a spring retained roller or tooth adapted to work on or in connection
with said star wheel; the star wheel being so arranged that when it is rotated to an
extent equivalent to about half of the pitch of the teeth of the star wheel, the roller
acts on such wheel and completes the movement. To enable the star wheel or its
equivalent to be moved in this manner it is mounted loosely on the shaft operated by
the chains or rods, but provided with a stop or other device by which it will be moved
positively in either direction, but at the same time will be free to move automatically
thereon as described in case of deficient positive movement by the chains or rods.
The converse arrangement of the above described star wheel and roller or tooth
mechanism may be employed.
Of course it will be evident the same mode of operation and devices may be used in
connection with reply and tell-tale gear in these telegraphs.
In telegraphic apparatus of the kind or type herein referred to, gongs or bells are
employed, and according to this invention the gong is sounded and the pointer moves
up to the central or proper position, as described, practically, simultaneously. By so
operating the apparatus the instant attention is called to the instrument by the
sounding of the gong the pointer will be in its central and proper position and there-
fore the notification transmitted cannot be mistaken on the ground of want of
correctness of the movement of the pointer.
In the ordinary form of telegraphic apparatus, such as the example above described
these combined operations may take place as the pointer commences to move into the
field of the adjacent order or notification on the dial.
It is to be understood that the nature or form of the device for automatically moving
the pointer or moving the indicating device or means, is not confined to the one more
particularly described, as any suitable mechanism by which the function specified can
be effected may be used; however the one specified is a simple and convenient one,
and in ordinary cases of the application may be used with advantage.
This invention is alike applicable to mechanical and electric telegraphic apparatus.
Dated this 21st day of January 1890.
n
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Agents.
Improvements in
COMPLETE SPECIFICATION.
or connected with Telegraphic Apparatus,
applicable for use in Navigable Vessels and analogous
purposes.
I, WILLIAM CHADBURN of 11, Waterloo Road, Liverpool in the County of
Lancaster, Telegraphic Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
My present invention relates more particularly to that type of telegraphic apparatus
which is used on board ship, and analogous places or circumstances, for transmitting
orders, notifications, or conditions, or positions of various moving parts of mechanisms
from one part of a ship or other structure to another or others. Some of this type
of telegraphic apparatus or instruments are termed or known as Engine-room
"

page_text: 3> <
Telegraphs," "Steering Telegraphs," Docking Telegraphs," "Lookout Telegraphs,”
Turret Telegraphs,"
"Gun Telegraphs,"
," "Stokehole Telegraphs," and so on.
In this type of telegraphic apparatus, by the operation of one instrument (the
ransmitting instrument) by a suitable actuating handle, lever, wheel, or like device
t one point or position of a ship or structure, a pointer, or an equivalent indicating
device, of another instrument (the receiving instrument) is moved or caused to move
over or in connection with a dial having upon it words, letters, or figures representing
orders or other notifications, and denotes the order or other notification transmitted ;
or conversely to the above, the dial may be moved and the pointer or indicating
device be stationary. Now the chief object of my present inventions is to work
the pointer or indicating device, in relation to the dial in such a manner that the
orders or notifications transmitted from one instrument to another shall be indicated
in or by the instrument receiving them in a correct, clear, and unmistakable
manner.
According to this invention the above end is effected by causing the moving part,
whether it be the pointer or the dial, to move automatically and to the full correct
and desired distance and point, by a partial movement of the means, device, or
medium on which it (the dial, or pointer) is mounted, or by which it is operated ;
that is to say, the full or complete operation of the pointer of the receiving instrument
is not imparted to it by the transmitting instrument, but is automatically effected
by a device in connection with such pointer or dial. By this means, small, or even
very considerable, defects or irregularities in the apparatus due to the defective
adjustment of parts, or to stretching, torsion, or other straining of rods, cords,
conduits, and so on, are rendered of no effect as regards the full and correct
movement of the pointing or indicating mechanism; or in other words, the indication
in and by the receiving instrument is rendered independent of the correct movement
being imparted to the pointing gear, and unmistakable.
"
As an example of an application of my invention, I will describe a mechanical
communicating apparatus according to and provided with my improvements and
suitable for use in navigable vessels, for say, communicating between the "bridge"
and the engine room, or similar use; and for the sake of simplicity and clearness it
will be assumed that the apparatus is of the ordinary kind or type having trans-
mitting and receiving instruments provided with actuating handles, fixed dials, moving
pointers, and gongs or sounding devices, and that the movement of the one instrument
is communicated to the other by means of chains, cords or rods.
In this example, the pointing gear is provided with a device by which when such
gear has been moved only a portion of the full and required stroke for an order, the
pointer is caused to move up to the correct position, and thus, whether the pointer
gear worked by the chain rod or other means of transmitting is further positively
moved by such chains or rods, or not, the pointer will be automatically moved to the
correct extent and position, and will thus render the order unmistakable. Thus it
will be evident that deficiencies or irregularities of movement due to stretching,
torsion, bad fitting, or other analogous cause, which frequently occur, or exist in
this kind of telegraphic apparatus, are by this invention obviated.
In the drawings which illustrate this example in end elevation in Figure 1, and in
side elevation in Figure 2, this automatically operating device consists of a star
wheel a mounted on the shaft e of the receiving instrument by a loose sleeve a', and
having on it the pointer x. The shaft e is operated by the transmitting chain or rods,
and this star wheel is moved partly by the shaft e when it moves, and partly by a
spring retained roller b working on said star wheel; the star wheel being so arranged.
that when it is rotated to an extent equivalent to about half of the pitch of the teeth c
of the star wheel, the roller acts on such wheel and completes the movement. To
enable the star wheel to be moved in this manner, its sleeve a' is mounted loosely on.
the shaft e as stated (which shaft represents the spindle of an ordinary receiving
instrument of that type known as "Chadburn's Telegraph "), but is provided with a
pin f fixed in the spindle e, which pin passes through a slot in the sleeve a', and by
which it will be moved positively in either direction, but at the same time will be

page_text: free to move automatically thereon as described in case of deficient positive movement
by the chains or rods. That is to say, provided the shafte receives from the full
stroke of the transmitter actuating device, only half the necessary movement to
bring the pointer to the required point on the dial of the receiving instrument,
the wheel will in this partial stroke be only raised just over the point of one of
the teeth c of the star wheel, but the spring d (which exerts a constant pressure
on the roller towards the shaft e) acting on the other side of the tooth presses the
roller thereon and forces it down, and the star wheel forward, thereby automatically
completing the stroke thereof, and so moving the pointer a up to the correct position
on the dial of the instrument. In the first part of the operation-i.e., the positive
movement of the wheel a due to the movement of the shaft e from the transmitter-
the pin bears against the metal of the sleeve a' forming one end of the slot therein,
and the latter portion of the operation-i.e., the automatic part-the sleeve a¹ moves
about the shaft, it being free to do so by the elongation of the slot.
The star wheel must of course be provided with the same number of serrations as
there are "orders" on the dial of the instruments.
The converse arrangement of the above described star wheel or roller or tooth
mechanism may be employed.
Of course it will be evident the same mode of operation and devices may be
used in connection with "reply" and "tell-tale" gear in these telegraphs.
In telegraphic apparatus of the kind or type herein referred to, gongs or bells are
employed, and according to this invention the actuation of such sounding operation
takes place as the pointer commences to move towards the field of the adjacent order
or notification on the dial, and the gong is further sounded as the pointer moves up
to the central or proper position, as described, practically, simultaneously. By so
operating the apparatus, instant attention is called to the instrument at the commence-
ment and end of the operation, and therefore the notification transmitted cannot be
read without sounding the gong or gongs, or mistaken on the ground of want of
correctness of the movement of the pointer and moreover if the second sounding
did not take place attention would be called by the first.
:
In Figures 3 and 4 one arrangement of apparatus by which this method of
telegraphing may be carried out is illustrated, Figure 3 being a front sectional
elevation and Figure 4 a side elevation in section of a receiving instrument, such
instrument being of the ordinary form. Figure 4 also shews the star wheel and
pointer applied. Referring now to these Figures; his the case of the instrument ;
2 is the dial; k is the gong, and 2 are two sets of two hammers each; m² and m²;
two double bell crank levers for working said two sets of hammers; and n¹ n² are two
toothed wheels by which said levers m¹ and m² are worked, said wheels being fixed on
the shaft e of the instrument.
are
The respective sets of wheels, levers, and hammers-namely, n² m² l' and n² m² 12,
constitute an ordinary ship's telegraphic gong sounding mechanism, the action of
which is well understood; in the double sounding arrangement however, the teeth of
the wheel n' are so disposed in relation to the wheel n², that the teeth of one stand in
line with the spaces between the teeth of the other, whereby the gong is sounded in
succession as above stated. The hammer rods are provided with springs and adapted
to act in the ordinary way.
The shaft e is rotated by the wheel o, which is fixed thereon, and is moved from the
transmitting instrument by chain or cord in the usual manner.
The star wheel above described and other parts specified with reference to Figures 1
and 2 are in Figure 4 marked with or denoted by the same reference letters as are
used in those figures.
In action, when the shaft e is rotated by the actuation of the wheel o from the
transmitter, one of the teeth of the wheel n¹ or n², as the case may be, actuates the
short vertical end m³ of the bell crank m¹ or m², and draws one of the hammers down,
and as soon as such tooth passes over or leaves such end m³, the hammer is released
and strikes the gong; then on the further stroke of the shaft e; that is in its latter
portion, the other toothed wheel comes into action with the other bell crank, and it is

page_text: similarly worked, and the gong is sounded simultaneously-or nearly so-as the
pointer moves into its correct and central position over the order on the dial it is
intended to move it to, this latter movement of the pointer being effected automatically
as specified with reference to Figures 1 and 2. Should however, through mechanical
defects or causes, the wheel o not receive from the transmitter enough movement, on
some occasions, to cause the gong to be sounded as the pointer moves to its central
position over the order to which it is intended to be moved, the sound given by
the hammer first actuated will have called attention to the change of order or
notification.
It is to be understood that the nature or form of the device for automatically moving
the pointer or other indicating device, is not confined to the one more particularly
described, as any suitable mechanism by which the function specified can be effected
may be used; however the one specified is a simple and convenient one, and in
ordinary cases of the application of the invention may be used with advantage.
Nor is the part of the invention set forth more particularly with reference to Figures 3
and 4 confined to the form or construction of parts shewn therein, as it can be carried
out in different kinds of ships' or like telegraphic apparatus in different ways.
This invention is alike applicable to mechanical and electric, and other analogous or
equivalent telegraphic apparatus.
Having now described and ascertained the nature object and purposes of this
invention and in what manner the same is to be performed I declare that what I
claim in respect of the herein described invention is :-
-
1. The herein described improvement in telegraphic apparatus used in navigable
vessels or for analogous purposes, that is to say, apparatus wherein the latter portion
of the stroke or movement of the indicating pointer or other equivalent device, is
effected automatically or by means independent of that employed for transmitting the
orders or notifications for the purposes specified.
2. In apparatus of the kind herein referred to, a device on or connected with the
actuating shaft or equivalent part and with the pointing device, and which is moved
positively by such actuating shaft for a part of its required movement, and partly by
a spring or its equivalent, and thereby moves said pointing device; for the purposes
set forth.
3. The wheel a, shaft e, and pointer a, arranged and adapted to operate as set forth
with reference to Figures 1 and 2 of the drawings.
4. The herein described improvement connected with the operation of apparatus of
the kind herein referred to, consisting essentially in effecting two or more soundings
of the sounding device or mechanism in or connected with the receiving instrument,
during the movement of the pointer or other equivalent indicating device from one
order or the like to another; for the purposes set forth.
5. In apparatus of the kind herein referred to, the employment of duplex sounding
mechanisms, said mechanisms being adapted to sound a gong, bell, or the like, at or
near the commencement of the movement of the pointer or equivalent indicating
device of a receiving instrument, and also to sound a gong, or the like, towards the
completion of such movement; for the purposes set forth.
6. The sounding mechanisms arranged and constructed as set forth with reference
to Figures 3 and 4 of the drawings.
Dated thin 01at dex of October 1890
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents.