Year: 1889

page_text: 1 EMANUEL BERG, Engineer in Chief of the Firm of Keiser & Schmidt 20 Johannes
Str. Berlin N. Germany do hereby declare the nature of this invention and in what
manner the saine is to be performed, to be particularly described and ascertained in
and by the following statement:—
My Invention relates to a system of telegraphs which enables the commander to be
in immediate communication with his Engineer at the signal receiving station, for
the purpose of receiving the reply of that order communicated to the Engineer by
the commander, in a manner, either executed by the Engineer himself directly or
indirectly or automatically by the ongine or machine in charge of the Engineer.
The system consists of a signalizing station Fig. 1 and a receiving station Fig. 3
with 4. Figs. 3 with 4 are electrically connected with Fig. 1 in such a way that
currents may circulate only between the corresponding signalfields of either set, and
each of the telegraphs at either station may act as a signalizing or receiving apparatus.
Thus if a signal given from the signalizing Fig. 1 to the receiving station Figs. 3
and 4 it will be sent after arrival in the opposite direction: from the receiving to the
signalizing station; independently of the signalizing station but dependently on the
exact fulfilment of the orders received by the Engineer.
The system is explained in the following description and drawings.
Figs. 1 and 2 is the telegraph worked by the commander. It consists of a cylindrical
case on which three or more rows of the required signalfields are visible. Each row
has an index of its own. The index I is mounted on the central axis of the case and
is constructed for transmission of mechanical and electrical power. The index II
and II (Figs. 1. and 2.) are mounted on arrangements of similar constructions,
shewn in Fig. 2. An electromaguet E E turns freely on its pivots P. Between the
two bobbins E E a tube T is fastened to the electromagnet which keeps the moving
direction of tho kuob A by means of an arbor "a." B B are two armatures fastened to
flexible strips of german silver and are attracted sideways when a current flows
through the bobbins E E. As the index II and III have to coincide with the index I

page_text: when the apparatus is at rest, they are kept and brought to this position after dis-
placement, by the well known arrangement of a heart-shaped cam and anti-friction
roller R, the latter of which moves in the geometrical axis of the index I.
The hand of Fig. 3 is worked upon by an electro-mechanical motionwork.
In Fig. 4. W is a part of a wheel which terminates into the handle H being for
instance the linkinotion of an engine. The wheel W works in the pinion P. which
turns freely on its shaft, but is prevented from doing so by a moveable coupling
attached to the wheel w. The wheel w is rigidly connected to the crank K and drives
the pinion p and with it the electric current generator M.
If now the commander wishes to give a signal to the engineer, he first sets the
index I upon the field "Stand by." In doing so a curront is generated and flows
from the just mentioned sigualfield of Fig. 1. to the corresponding signalfield of Fig. 3.
and causes the hand J to set itself on to that field, after reaching it the current is
switched automatically by the hand J into the branch circuit, including the electro-
magnets E E of the index II. (Fig. 1. and 2.)
The following takes now place. The knob rigidly connected with index I being
arrested by the two banking pins CC, was therefore prevented from following the
index I; but as now a current flows through E and E an attraction is caused of the
armatures BB and the sideways motion of them makes the knob A to loose its resting
surfaces on the armatures and by the action of the spring S at the other end of the
arbor a is drawn towards the top of the tube T where it is again arrested, but in this
position freed from the banking pins C. The action of the anti-friction roller and
heart-shaped cam now comes into play and compelles the index II with its knob A to
coincide with the index I. Thus the reply was given automatically by the machine.
The engineer as soon as he hears the sound and reads the signal has to send the
reply to the commander by transmitting the received signal in the opposite direction.
As the signal given was "Stand by " hence, no order to be executed by simultaneously
altering the work done by the engine, he gives the reply independently of the machine
or engine. Whilst turning the crank K he uncouples P with W and only drives the
electric current generator, but as said before, only the corresponding signalfields of
either set of telegraphs are electrically connected, so the signalfields "Stand by" of
Figs. 3 with 4 and Fig. 1 including in this circuit the index III and the electric
current generator M of Fig. 4. The current flowing in this circuit magnetizes the
core of the electro magnets E E belonging to index III (Figs. 1 and 2) which index
is now set coinciding with index I in precisely the same manner as the index II.
Has the commander received this reply of the receiving station, he transmittes the
next signal, for instance "Slow Astern." The receiving station sends back first the
automatically reply acting upon the indox II of Fig. 1. and then followes the reply
of the engineer. In this case dependently of the engine and acting upon the index III
of Fig. 1. By doing so he turns the handle H of Fig. 4, likewise as the commander
turned the index I of Fig. 1, and sends back the signal "Slow Astern" to Fig. 1.
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. The sending of a given signal, transmitted from a signalizing to a receiving
station, into the opposite direction i.e. from the receiving to the signalizing station,
for the purpose of preventing misunderstandings of orders, by way of constructing
and electrically connecting up the sending or signalizing telegraph with the receiving
telegraph such, that they might act one for the other, and this convertibility of the
telegraph at the receiving station may take place, either automatecally or independently
or dependently of the engine or machine to be worked upon, according to the order
given by the signalizing station; as described before.
2. In the signalizing telegraph, for making the arrival of the reply visible, the
electromechanical arrangement by which this telegraph becomes a receiver, consisting
principally of an index II or III governed in its motion by the faculties of a knob A,
which knob at the time of the arrival of the reply is liberated by electromechanical
force and acted upon by two mechanical forces, working in opposite directions such

page_text: that the knob is freed from the banking pins CC when the reply is to be made visible
by the index and limited again by them after the index has attained its new
position.
3. For the purpose of sending reply currents from the receiving to the signalizing
station, the application of an electric-current generator M in connection with a train
of wheels, to be set in rotation either by the regulating handle of the engine or machine
or independently of it by a crank K which when turned disconnectes the electric
current generator from the engine; as described before.
DL: 101L
1900