Improvements applicable in connection with Telemotor Apparatus for Actuating Mechanism at a Distance; for Telegraphing, Indi- cating, Steering, and analogous Purposes.
Year: 1894

page_text: Date of Application, 10th Feb., 1894
Complete Specification Left, 9th Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements applicable in connection with Telemotor Apparatus
for Actuating Mechanism at a Distance; for Telegraphing, Indi-
cating, Steering, and analogous Purposes.
I, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the
County of Mid Lothian, North Britain, Engineer, do hereby declare the nature of
this invention to be as follows, that is to say :-
My said invention relates to telemotor apparatus of the kind described in my
Patent Specification, No. 14456 of 1888, in which apparatus movements are trans-
mitted by means of water or other liquid in pipes, arranged between the points of
transmission and reception in whatever manner may be most convenient in each
case, exact correspondence between the transmitting and receiving parts being
secured by causing the two pipes through which opposite movements are transmitted
to communicate with each other and thereby have the pressures in them equalized
whenever the parts are in their middle positions.
By my present invention I combine with the hydraulic telemotor apparatus
certain parts, such as are hereinafter described, for indicating a transmitted move-
ment and retaining the indication until certain other movements are subsequently
transmitted. The nature of the improvements will be understood from the following
description of their application, as an example, to telegraph apparatus between the
bridge and engine room of a steamer.
In the engine-room apparatus, on a radial arm fast on a spindle which is turned
by the hydraulic telemotor apparatus when an order is transmitted from the bridge,
there is fixed a pin which acts on one or other of two radial arms or pointers fixed
on bosses which are loose on the spindle. One of the pointer arms is acted on for
ahead orders and the other for astern orders, each remaining at rest when the other
is moved. On the boss of each pointer arm there is a toothed wheel with which
there engages a catch held by the armature of an electro-magnet; and when either
pointer arm is moved to a position indicating on a dial the order transmitted it is
retained there by the catch, whilst the spindle arm may return to a point a short
distance from its middle or neutral position. When the spindle arm is in the
position referred to, on either side of the middle position a communication becomes
open between the two telemotor pipes, this communication being arranged to be
open when the spindle arm is at any point within a suitable distance on each side
of the middle point. The armatures to which the catches are fixed are held by
spring blades and have also clappers arranged to act on a bell or on separate bells;
and when either pointer arm is moved from the neutral position the action of its
toothed wheel on the catch causes the bell to ring. On the engineer noticing and
attending to an order he transmits a suitable reply to the apparatus at the bridge,
and thereafter the spindle of the engine-room apparatus is let go. When the
spindle is in the middle position into which it has to be moved by hand a piece on
it' or its arm makes contact in the electric circuit which excites the electro-imagnet,
the armature of which is thereby made to reciprocate. Each pointer-arm boss is
connected to a spring arranged to turn the arm back to the neutral position when
not held by the catch; and as each reciprocation of the armature withdraws the
catch the arm turns back step by step until it reaches the middle position.
Instead of employing electro-magnets to withdraw the catches and ring the bell
whilst doing so, any suitable equivalent mechanical device may be used. Thus a
wire or other rope or cord led from the bridge to the engine room and there con-
pected to a spring to take up slack may be arranged to act on toggle levers

page_text: connected to the catches so that they will be moved apart when the rope or cord is
pulled, the same or other levers also acting on the bell clapper.
Dated this Ninth day of February 1894.
EDMUND HUNT,
Applicant's Agent.
.
: T
COMPLETE SPECIFICATION.
Improvements applicable in connection with Telemotor Apparatus
for Actuating Mechanism at a Distance, for Telegraphing, Indi-
cating, Steering, and analogous Purposes.
I, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the County
of Mid Lothian, North Britain, 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, that is to say :-
My said invention relates to telemotor apparatus of the kind described in my
Patent Specification No. 14456 of 1888, in which apparatus movements are trans-
mitted by means of water or other liquid in pipes, arranged between the points of
transmission and reception in whatever manner may be most convenient in each
case, exact correspondence between the transmitting and receiving parts being
secured by causing the two pipes through which opposite movements are trans-
,mitted to communicate with each other and thereby have the pressures in them
equalized whenever the parts are in their middle positions.
By my present invention I combine with the hydraulic telemotor apparatus
certain parts, such as are hereinafter described, for indicating a transmitted move-
ment and retaining the indication until certain other movements are subsequently
transmitted. The nature of the improvements will be understood from the following
description of their application, as an example, to telegraph apparatus between the
bridge and engine room of a steamer.
In the engine-room apparatus, a radial arm, fast on a spindle turned by the
hydraulic apparatus, acts on one or other of two pointers loose on the spindle, and
.when either pointer is moved to a position on a dial, indicating an order, it is retained
.there by an electro magnet, whilst the spindle arm returns to a point near its neutral
.position, and a communication then becomes open between the two telemotor pipes.
The magnet armatures are held by spring blades, and act on a bell, when either
pointer is moved. When the spindle arm is in the middle position, it makes contact
in the electric circuit which excites the electro-magnet, the armature of which is
thereby made to reciprocate and release the pointer, which is turned, step by step,
by a spring until it reaches its middle position.
"
Instead of employing electro-magnets to withdraw the catches and ring the bell
whilst doing so, suitable equivalent mechanical devices, hereinafter described may
be used.
And in order that my said invention and the manner of performing the same may
be properly understood I hereunto append three sheets of explanatory drawings to
be hereinafter referred to, and showing telegraph apparatus as made with my
improvements.
Figure, 1, on Sheet, 1, of the drawings is a transverse vertical section, and
Figure, 2, is a longitudinal vertical section of the trausmitting part of the hydraulic
telemotor.
Figure, 3, is a side elevation, Figure, 4, a front elevation, and Figure, 5, a sectional
plan of the receiving and indicating parts of the hydraulic telemotor.
Figure, 6, on Sheet, 2, is a longitudinal vertical section of the receiving part of
the hydraulic telemotor, drawn to a slightly larger scale.
Figures, 7, and, 8, are vertical sections, as at right angles to each other, of another
modification of the transmitting apparatus.

page_text: Figures, 9, and, 10, on Sheet, 3, are vertical sections as at right angles to each
other of receiving and indicating parts to work in connection with the transmitting
part shown in Figures, 7, and, 8.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
The transmitting part of the hydraulic telemotor shown in Figures, 1, and, 2,
consists of an hydraulic cylinder, A, provided at each end with a casing, A 1,
containing a safety valve to allow for excess of pressure. The cylinder, A, contains
a piston, A2, formed with transverse rack teeth which gear with a pinion, A 3, fast
on a spindle, A4, turned by a suitable handle (not shown). The cylinder, A, is
connected by pipes, A 5, and, A 6, to the receiving part of the hydraulic telemotor
and the system is filled with glycerine, oil, or other liquid The receiving part of
the hydraulic telemotor consists of an hydraulic cylinder, B, similar to the trans-
mitting cylinder, A, and containing a similar piston, B 1, and pinion, B 2. The
piston, B1, has a rod, B 3, extending from it, and enclosed by an extension of the
cylinder, B, this rod having encircling it a spring, B4, which is arranged to make
the piston, B 1, tend to return to its middle or neutral position. The pinion, B 2, is
fast on a spindle, B 5, which projects out through a stuffing box, B 6, and has on its
outer end a radial arm, C. When the transmitting piston, A2, is moved, the
receiving piston, B 1, is correspondingly moved by the displaced liquid and acts by
means of its rack teeth, the pinion, B 2, and the spindle, B 5, on the radial arm, C.
On the radial arm, C, there is fixed a pin C 1, which acts on one or other of two
radial arms or pointers, D, and, F, fixed on bosses or sleeves, D 1, and, F 1, which
are loose on the spindle, B 5. One of the pointer arms, D, F, is acted on for ahead
orders and the other for astern orders, each remaining at rest when the other is
moved. On the boss of each pointer arm, D, F, there is a toothed wheel, D 2, F 2,
with which there engages a catch, D 3, F3, held by the armature, D4, F 4, of an
electro-magnet, D5, F5, and when either pointer arm is moved to a position (such
as that in which the pointer, D, is shown in Figure 4) indicating on a dial, G, the
order transmitted, it is retained there by the catch, D3, F3, whilst the spindle arm, C,
may return to a point a short distance from its middle or neutral position (in which
it is shown in Figure, 4). When the spindle arm, C, is in the position referred to,
on either side of the middle position, a communication becomes open between the
two telemotor pipes, A 5, and A6, by means of the openings, A 7, and, A 8, and the
by-pass, A 9, in the transmitting cylinder, A, this communication being arranged to
be open when the spindle arm is at any point within a suitable distance on each side
of the middle point. The armatures, D4, F 4, to which the catches, D3, F 3, are
fixed are held by spring blades, D6, and, F6, attached to a small bracket, GI, on the
dial G, and the spring blades have also clappers, D7, F7, arranged to act on a
bell, H, attached to a small bracket, H 1, on the upper part of the dial. When either
pointer arm, D, F, is moved from the neutral position, the action of its toothed
wheel, D2, F2, on the catch, D3, F3, causes the armature, D4, F4, to reciprocate, and
its clapper, D7, F 7, to strike the bell, H. On the engineer noticing and attending
to an order he transmits a suitable reply to the apparatus at the bridge, by separate
. means provided for the purpose, and thereafter the spindle of the engine-room
apparatus becomes free to return to its middle position. When the spindle, B5, is
in the middle position into which it has to be moved by means of the transmitting
piston A 2, which is actuated by hand, a piece (not shown) on it or its arm, C,
makes contact in the electric circuit which excites the electro-magnets, D 5, F 5,
the armatures, D4, F 4, of which are thereby made to reciprocate. Each pointer
arm boss, D1, F 1, is connected to a spring, D 8, F 8, attached to studs, D 9, F 9,
fixed in the dial, G, the spring being arranged to turn the arm back to the
neutral position when not held by the catch, D3, F 3, and as each reciprocation
of the armature, D4, F 4, withdraws the catch the arm turns back step by step
until it reaches the neutral position.
Instead of employing electro-magnets, D 5, F 5, to withdraw the catches, D3, F3,
and ring the bell, H, whilst doing so, any suitable. mechanical devices may be

page_text: used. Thus a wire or other rope or cord led from the bridge to the engine-
room and there connected to a spring to take up slack may be arranged to act
on toggle levers connected to the catches so that they will be moved apart when
the rope or cord is pulled, the same or other levers also acting on the bell
clapper. A convenient equivalent device for the purpose consists of parts like
the hydraulic telemotor apparatus and is shown in Figures, 7, 8, 9, and, 10. An
hydraulic cylinder, J, is provided containing a ram, J 1, and a spring, J 2, this
ram being acted on by a roller cam, J 3, centered on a spindle, A 4, which is
rocked by a handle, J 5. The handle, J 5, acts through bevil wheels, J 6, and a
spindle, J 7, on a pointer, K, which indicates the various orders required on a glass
dial, K 1, for putting a light behind which provision is made. On the spindle, A 4,
which is horizontal, is a pinion, A 3, which acts on rack-toothed extensions of the
rams, L, M, of hydraulic cylinders, I. 1, and M 1, when the spindle is turned. These
two cylinders, L 1, M 1, correspond to the two ends of the cylinder, A, and the
rains, L, M, to the double ended piston, A 2, of Figures, 1, and, 2. To call the
attention of those in the engine room the handle, J 5, is moved backwards and
forwards, and causes the cam, J 3, to act on the ram, J 1, of the cylinder, J,
which is connected by a pipe, N, with an hydraulic cylinder, P, in the receiving
apparatus, containing a ram, P 1, having a rod, P2, extending out from it and
encircled by a spring, N 1, arranged to return the ram back to its position of
rest when displaced. The rain, P1, acts on a bell crank lever, P 3, which moves
a shaft, B5, capable of sliding at one end in a bearing piece, P5, and at the other
end on a stud, P6. The rams, J 1, and, P 1, are quickly returned to their original
positions by the springs, J 2, and N 1, therefore the movement of the handle, J 5, makes
the shaft, B5, to reciprocate, and (by means of a detent piece, D2, kept from turning
by a projection, .E, on the bracket, E 1) to cause a trigger, P 8, to act through
arms, P 9, alternately on striking rods, D7. The rods, D7, have springs, Q, on them
arranged to cause them to strike a bell, H, when released from the arms, P 9. The
handle, J 5, is now moved until the pointer, K, gives the required indication, and
liquid which is displaced from one or other of the hydraulic cylinders, L1, and, M 1,
forces up one or other of the rams, R, S, of hydraulic cylinders, R 1, and, S1, the
two sets of cylinders being connected by pipes, A 5, A 6. The rams, R, S, correspond
to the double-ended piston, B 1, and the cylinders, R1, S1, to the two ends of the
cylinder, B, of Figure, 6. The ram, R, or S, which is pushed up acts by its rack
teeth on a pinion, B2, fast on the shaft, B 5, which thereby acts by a square end
on the bearing piece, P5, to which a disk, C, corresponding to the radial arm, C, of
the first modification is fixed. The disk, C, on being turned round, takes with it
one or other of the two pointer arms, D, and, F, by means of the pin, C 1, the arms
being mounted on sleeves, D1, F 1, loose on the piece, P 5. The sleeves, D1, and, F1,
have each attached to them a pawl, D3, (one only. being shown) pressed inwards by
a spring, S2, and the pawl corresponding to its pointer arm, I), F, engages, when
the shaft, B 5, comes to rest, with a notch on the piece, D 2, corresponding to the
indication on the dial, G, and retains the pointer arm in position, whilst the
handle J 5, of the transmitting apparatus is forced back to its neutral position by
the action of springs, B4, on the rams, R, and, S, of the receiver cylinders, R 1, S 1.
When making a fresh signal the handle, J 5, is moved backwards and forwards
causing the bell, H, to be rung and withdrawing the retaining piece, D2, from
the pawls, D3, whereupou the pointer, D, or, E, moves back again to its original
. position by the action of springs, D8, (one only being shown) attached to the
sleeve, D1, or, F 1, of the pointer. While the handle, J 5, is being moved back-
wards or forwards for the purpose of ringing the bell, H, and before giving an
indication the rams, L, M, of the cylinders, L 1, and, M 1, move up and down but
not to the extent to cover openings, T, in the cylinders, communicating through
boles T 1, with the casing, T2, which is closed by a cover, T3, the spindle, A 4,
passing through a stuffing box, T4. As soon as the rams, L, and, M, pass the
openings, T, liquid is forced through the pipes, A 5, A 6, to the receiver apparatus
and gives the indication required. A portion, V, of the receiver: apparatus.is

page_text: closed and contains air which acts as a cushion to allow for expansion or con
traction in the pipes and casings and also to accomodate the displacement of the
rams, P1, R, and S, and the movement of the shaft, B 5. The various parts of
the receiving apparatus are fixed to the portion, V, and a casing, V 1, which partly
encloses them and is provided with a cover for the pointers, D, and, F, having a
glass frout, V 2.
The various parts of the transmitting apparatus are enclosed in a hood, W, which
forms the upper part of a pedestal (not shown).
The apparatus for transmitting a reply from the engine room to deck is similar
to the transmitting apparatus described. It is placed beneath the receiving
apparatus to which it is connected by a pipe, X, for the purpose of accomodating
the displacement due to the motion of its cylinder rams, and it works in connection
This deck
with a receiving instrument on deck similar to the one described.
receiving instrument can be made without the bell and the parts required to ring it,
great simplification of the apparatus being thereby effected.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. Combining and arranging telemotor apparatus in the improved manner sub-
stantially as hereinbefore described with reference to Figures, 1, to, 6, of the
accompanying drawings.
,
2. Combining and arranging telemotor apparatus in the improved manner sub-
stantially as herein before described with reference to Figures, 7, to, 10, of the
accompanying drawings.
3. Combining with telemotor apparatus parts substantially as are hereinbefore
described for indicating a transmitted movement and retaining the indication for a
time.
4. Combining with telemotor indicating apparatus a bell actuated by electro
magnets whilst an order transmission is being made and whilst the temporarily
retained indicator is returning to its neutral position, the parts being arranged and
operating substantially as herein before described with reference to Figures, 1, to, 6,
of the accompanying drawings.
5. Effecting the actions referred to in the next preceding claim by equivalent
devices substituted for the electro-magnets and other parts, an example of which
devices is herein before described with reference to Figures, 7, to, 10, of the accom-
panying drawings.
Dated this Eighth day of November 1894.
EDMUND HUNT,
Applicant's Agent.