Improvements in Telegraphic Receivers.
Year: 1898

page_text: Date of Application, 26th Nov., 1898-Accepted, 14th Jan., 1899
Improvements in Telegraphic Receivers.
I, GIULIO GIORGI, of 87, Via Santa Maria, Pisa, Italy, Electrician, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:
This invention relates to a telegraphic apparatus having for its object to auto-
matically record the telegrams coming in, the operator needing only to answer
the call of the sending station in the usual manner, and to close the circuit by
actuating a lever on the contact-apparatus, whereupon, the tape will be unwound
automatically as long as the sender is telegraphing, the winding roller being
controlled by an electric motor, the circuit of which is controlled by the writing
escapement, so enabling the operator, after having answered a call and adjusted
the switch, to leave the apparatus and attend to other telegrams or to fulfil other
duties.
The apparatus is illustrated in the accompanying drawings, in which,
Fig. 1, is a side elevation, and
Fig. 2, is a rear view of the entire arrangement,
Figs. 3 and 4, represent details, and
Fig. 5, is a plan of the general arrangement and diagrammatic representation
of the electric circuit.
On the winding spindle, T, is secured a toothed wheel, H, (Fig. 2,) which
engages with a fusee, I, actuated by an electro-motor, and the part of the winding
spindle carrying the wheel, H, is connected with the part thereof carrying the
disc, G, (upon which is mounted the roller for the tape to receive the writing)
in the usual manner, by a spring connection, K, &, partly in order to allow of the
ready placement and removal of the roller with the writing, and partly for the
purpose of allowing the obtainment of a gradually increasing peripheral speed
for such roller so as to correspond with the gradual increase of its diameter.
Brake-action is exerted on the disc, G, by a lever, L', which, by a suitable arm,
(Fig. 4,) engages with a slot, S, in the disc, and is keyed on a spindle, P¹. The
stopping and release of the disc, G, and, consequently, of the winding up roller
is attained by the movement of the lever, L', which is effected by the spindle, P¹,
the movements of which are caused by appropriate levers (Fig. 2,) actuated by
means of an insulating piece, R¹, through a set screw, V, provided on the shorter
end of the two-armed writing lever; the operation of the insulating piece, R¹,
arranged on a spring, Z, of the pillar, C¹, also effects the contact of the motor
battery by the wires connected to the pillars, C¹, and A2, respectively, the absolute
completion of the circuit of the electro motor being effected by suitably turning
the contact lever, D, on the contact-board into contact with the contact piece, C.
The arrangement of the telegraphic apparatus in other respects is as follows:-
The tape runs from the first roller (Fig. 1,) under two guide-rollers on a
standard, Q, over a table, B, to the winding up roller, T. The writing lever
transmits the signs that are telegraphed through a slot in the table, B, to the

page_text: tape by pressing the same against the writing wheel, C, which receives ink from
the inking roller, A. To prevent tearing of the tape or other interruption of the
working, the writing wheel as well as the inking roller can move aside. To this
end, the inking roller, A, is controlled by a two-armed lever, L, (Fig. 3,) moving
on a centre, M, supported by an arm, F, of the standard, Q. The lever, L, at
the one end, is fitted with joints, E, and spiral springs, and, at the other end, is
fitted with a roller, N, bearing against an inclined disc, P, on the winding
spindle.
The operation of the apparatus is as follows, vide Fig. 5:—
When a station fitted with the apparatus is called, the line current passing into
the relay current closing the local circuit in the well-known manner, the operator
has merely to answer the call in the usual manner and to place the contact
lever, D, into contact with the contact piece, C. If the sending station now tele-
graphs, the writing escapement is actuated in the well known manner, at the
same time, however, completing the circuit of the electro motor which actuates
the winding roller, or breaking the same as required, by depression of the in-
sulating piece, R¹, which causes the spring, Z, to make (and respectively to break)
contact in the wires connected to C, and to A², respectively. In correspondence with
this making and breaking of circuit, the disc, G, and winding roller are subjected
to break action or released by the operation of the lever arrangement on the
spindle, P.
In sending messages to other stations (or calling the same) from a station fitted
with the herein described apparatus, the contact lever, D, is placed out of contact
with the contact piece, C, thereby cutting out the electro motor actuating the
winding mechanism, and rendering the contact lever (key lever) available for
transmitting messages by means of the line current to another station in the
usual manner.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. An automatic telegraphic apparatus characterized by the winding up of the
tape, after the call has been answered by the operator, being effected by an electro
motor the circuit for which is controlled by the writing escapement, for the pur-
pose of making the receipt of messages independent of the operator, as set forth.
2. A form of construction for the apparatus characterized in Claim 1, characterized
by a writing escapement which also actuates the contact of the winding motor
and also the brake gear of the winding roller.
OCA
Naam bon 1808
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.