An Electro-mechanical Device for Producing Corresponding Positions in Transmitting and Receiving Apparatus.
Year: 1892

page_text: Date of Application, 16th Jan., 1892-Accepted, 16th Jan., 1893
CATIVA.
An Electro-mechanical Device for Producing Corresponding Positions
in Transmitting and Receiving Apparatus.
We SIGMUND SCHUCKERT and ALEXANDER WACKER, of the firm of
"Schuckert & Co., Commandit Gesellschaft," of Nuremberg, in the Empire of
Germany, 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:-
Ships' telegraphs, ship steering apparatus, hand or dial telegraphs and similar
apparatus require a transmitter and a receiver so arranged and connected with
each other, that a certain position or condition of the latter corresponds to any
given position or condition of the transmitter. For instance, in dial telegraphs,
when the transmitter is adjusted to a certain sign, the receiver must be caused to
give the same sign. The hereafter described arrangement has for its purpose, to
fulfil the said functions in a simple and reliable manner.
As mentioned above, the device comprises a transmitter and a receiver. The
transmitter chiefly consists of a series of contact pieces a¹ a² etc. arranged in a
circle.
From each of these contact pieces a wire leads to the receiver. To introduce
the electric current into the contact pieces and the conductors connected therewith,
two rings band b, arranged concentrically to the contact pieces, are in connection
with the two poles of a source of electricity. Two contact slides c¹ c² secured to a
common arm & so close the circuit, that the current always flows through those
conductors, which are connected with two contacts lying opposite each other, while
the other conducting wires remain insulated. Instead of arranging the contact
pieces in a plane, they may also be joined together to a cylinder, so that the trans-
mitter assumes the shape of a stationary Gramme" commutator, to which is
connected on the right and left a slide ring, and the brush holder of which is
moveable.
The receiver corresponding to the transmitter hereinbefore described chiefly
consists of as many coils, as there are contact pieces in the transmitter. These
coils are arranged circularly around a core, i.e. either about an iron ring, so as to
form a "Gramme" armature, or about a cylinder in the manner of drum armatures.
Contiguous coils are connected with each other, and their junction is connected with
one of the above mentioned conductors leading to the transmitter.
Within the ring or outside the drum a permanent or electro magnet is pivoted,
so as to close the magnetic circuit.
If the arrangement is so chosen, that the armature revolves and the electro
magnet is stationary, a series of slide rings is necessary, equal in number to the
conduits and contacts of the transmitter..
The apparatus operates as follows: 'According to the position of the trans-
mitter, two conduits are excited, and the current is introduced into a connecting
point of two coils and led away from the opposite. Thereby a magnetic axis is
formed in the direction of these two points, and the magnet (or electromagnet)
places itself into this axis. A certain position of the transmitter therefore
corresponds to a certain position of the receiver, and the problem mentioned above
is solved.
It is admissible, to adjust the slides of the transmitter, so as to cause the same to
cover two contacts at the same time. The receiver will then correspondingly
place itself into a median position. Consequently, twice as many signs can be
given, as there are contacts and conduits.
It may be ultimately observed, that all coils are traversed by electric current,

page_text: and that consequently the apparatus is able to exert considerable power directly
and without a relay.
The application of our invention to ships' steering apparatus and to apparatus
indicating the position of the rudder is represented by Sheet 2 of the accompanying
drawings.
In these figures a indicates the steering wheel, with which the transmitter bis
mechanically connected, so that by turning the wheel the motor c is caused to turn
also, and that synchronously. The motor is connected with the distributing slide
valve of the steering engine. The second steering wheel d is intended to be used,
if the electrical apparatus should get out of order, in which case the motor shaft is
driven directly by a chain e.
The indicating apparatus has a similar arrangement, being the transmitter
connected with the rudderf by means of tooth-wheels, so that the receiver h shows
at a glance the position of the rudder.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is;-
The combination of a transmitter containing a circularly arranged series of
contact pieces and a pair of contact slides and contact rings adapted to connect the
said contact pieces in pairs with the poles of a source of electricity, with a trans-
mitter containing a circularly arranged series of coils connected with each other
and adapted to produce a relative angular motion between itself and a diametrically
arranged magnet, and a group of conductors equal in number to the contact pieces,
each conductor connecting one of the said contact pieces of the transmitter with
one of the junctions between consecutive coils of the receiver, the whole being
adapted to operate substantially as described and for the purposes set forth.
Dated this 16+1.
....1900
S. SCHUCKERT,
A. WACKER,
By Fairfax & Wetter,
433, Strand, London, Agents.