IMPROVEMENTS IN TELEGRAPH PRINTING AND TIME REGULATING APPARATUS
Year: 1882

page_text: LETTERS PATENT to John Imray of No 28 Southampton Buildings Chancery
Lane in the County of Middlesex for an Invention of IMPROVEMENTS IN
TELEGRAPH PRINTING AND TIME REGULATING APPARATUS A communication
to him from abroad by Adolphus A. Knudson of Brooklyn in the United
States of America
PROVISIONAL SPECIFICATION left by the said John Imray at the Office
of the Commissioners of Patents on the 31st October 1882.
JOHN IMRAY of N° 28 Southampton Buildings Chancery Lane in the County
of Middlesex "IMPROVEMENTS IN TELEGRAPH PRINTING AND TIME REGULATING
APPARATUS [A communication to him from abroad by Adolphus A Knudson
of Brooklyn in the United States of America]
"
In a Provisional Specification filed by me on the 23rd May 1882 N° 2428 I
described an invention communicated to me from abroad by Adolphus A. Knudson.
The telegraph printing and time regulating apparatus described in that Specification
required for its action two conducting wires from the transmitting to the receiving
stations. The present invention communicated to me by the said A. A Knudson,
consists in so modifying and arranging the electrical connections of the trans-
mitting and receiving instruments that a single conducting wire suffices to effect
the several operations of moving the type wheel, moving the impression lever, and
moving the time corrector. For this purpose a contact lever is provided, which in
one position closes a circuit including the electro magnets that work the type
wheel and also the electromagnet that works the impression lever. Owing
however to the rapid alternations of current which work the type wheel, the
impression lever remains stationary while it is moving, and it is only when these
alternations cease, the type wheel having heen turned by them to the required
position, that there is sufficient continuance of current to cause the stroke of the
impression lever. When the contact lever above mentioned is shifted by the

page_text: clockwork it takes a position where it excludes the typewheel and the impression
lever magnets and includes in the circuit the unison magnet so as to bring the
type wheels to unison, the impression lever being at that time withdrawn from the
type wheel. For correcting the time the one wire is used in the following manner.
When the time arrives for setting the hands of the time pieces, the transmitting
arm is moved to such a position as to bring the cams on the typewheel sleeves to
the point where they bring the correcting rods over the studs of the impression
levers, and then the arm being stopped the impression levers make their strokes
raising the correcting rods and their yokes and so setting the minute hands of the
time pieces exactly to the hour. In other respects the apparatus is constructed and 1
arranged as described in the Specification above referred to.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Imray in the Great Seal Patent Office on the 25th April
1883.
JOHN IMRAY of N° 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex " IMPROVEMENTS IN TELEGRAPH PRINTING AND TIME REGULATING
APPARATUS a communication to me from abroad by Adolphus A Knudson of
Brooklyn 'in the United States of America
"
In the Specification to Letters Patent dated the 23 May 1882 N° 2428 granted
to me for an invention communicated to ine from abroad by A. A. Knudson, I
described telegraph printing and time regulating apparatus which required for its
action two conducting wires from the transmitting to the receiving stations.
The present invention, communicated to me by the said A. A. Knudson, consists
in so modifying and arranging the electrical connections of the transmitting and
receiving instruments that a single conducting wire suffices to effect the several
operations of moving the type wheel, moving the impression lever, and moving the
time corrector. The electrical connections for this purpose may be arranged in
two ways, as shown on the accompanying diagrams Figs and 2 which show
certain of the parts shown in the corresponding diagrams Figs 3 and 4 of the
Specification No 2428 of 1882 above referred to, these parts being marked by similar
letters of reference; that is to say G G are the electro-magnet for working the
type wheel, F is the electromagnet for working the impression lever F³, and K
is the electromagnet for effecting unison. Instead of connecting the coil of F to the
second line wire as described in the previous Specification above referred to, I connect
it, as shewn in the annexed Fig. 1, in the same circuit with the electromagnets GG,
so that the impression lever is worked by the single conductor, the first line
wire W, in the following manner. As the electro-magnets G G for working the
type wheel are excited by a series of alternating currents, sent from the trans-
mitting instrument in very rapid succession, there is no time during the transmission
of these currents for the magnet F to become sufficiently excited to attract its
armature, and it is only when the succession of alternating currents ceases by the
handle of the transmitter and also the type wheel coming to rest, that a continuous
current, whether positive or negative, continuing to flow along the conductor,
excites F, causing it to attract its armature, so that the lever F makes its upward
stroke, giving the impression. Such is the state of the circuit when the trans-
mitting and receiving instruments are in their ordinary working condition, that is
to say, when electrical impulses coming from the transmitter by the one line
wire W through the lever P, arm R, contact 7, coils of G G, coil of F and by the
wire W¹ to the next station or to earth. When the lever P is moved to the left, as
described in the previous Specification by its friction on the arbor of the minute hand
of the time piece, so that the arın R passes from the contact to the contact r³,
then the coils of G G and F are cut out of circuit, and the current passes by
WPR and through the coil of K to W, and K being thus excited, causes
the unison movement to take place as described in the previous Specification
above referred to.
According to the modified arrangement shewn in Fig. 2 the wire W divides into
two branches, one through the coils of G G and F which thus remain always in
circuit, and the other through P and R to make contact at when P moves to the
left, and thus to bring into circuit the coil of the unison magnet K which, being
of comparatively low resistance, receives the principal part of the current, leaving
G G and F comparatively inert.

page_text: Having thus described the nature of the said Invention and in what manner
the same is to be performed as communicated to me by my foreign correspondent,
I claim as improvements in telegraph printing and time regulating apparatus of
the kind described in the Specification N° 2428 of 1882 above referred to.
First Connecting the transmitting to the receiving instrument by a single
conducting wire W, as herein described with reference to Fig. 1.
Second: Connecting the transmitting to the receiving instrument by a single
conducting wire W, as herein described with reference to Fig. 2.
In Witness whereof I the said John Imray have hereunto set my hand
and seal this Twenty fifth day of April in the year of our Lord One
thousand, eight hundred and Eighty three.