Printing Telegraph.
Year: 1898

page_text: Date of Application, 25th July, 1898-Accepted, 5th Nov., 1898
COMPLETE SPECIFICATION.
Printing Telegraph.
I, REINHOLD KÜBLER, of 65, Blücherstrasse, Berlin, Germany, Electro-Physical
Expert, do hereby declare the nature of my said invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
―
The present invention relates to a telegraphic type-writer, the effect of which
is the same as the ordinary typewheel typewriter.
The invention involves mainly the following principle:-
Electric impulses produced by means of a contact bar and metallic pointer,
forming the sender, are transmitted to the receiving apparatus, and produce the
rotation of a type wheel, the type of which, after being adjusted to the operative
or printing position, is caused to effect the impression at the moment a somewhat
longer electric impulse or a longer interruption of the electric current is effected
at the sender end. As soon as the sign has been printed the type wheel is returned
to its initial position.
And in order to render the present specification more easily intelligible reference
is had to the accompanying drawing in which similar letters of reference denote
similar parts throughout the several views:
Fig. 1 is a representation of the sender device,
Fig. 2 a diagrammatical representation of the receiver apparatus and
Fig. 3 a plan of a part of the latter apparatus showing the type wheel shaft
and some parts in connection therewith.
The sender device (Fig. 1) consists of a metal bar B mounted in a guide board
of ebony A. and provided with eleven pieces of ebony C1 C2 C3 let into the same
at equal distances apart and being flush with the retaining metallic sur-
faces e, c, c, a stop being provided at one end next to the strip C. The signs
to be transmitted are arranged after the manner of a type writer along both edges
of the ebony base plate A. One wire of the line battery L B is secured by means
of a screw F to the pointer or writing utensil E by means of the metal sleeve G,
the said pointer being provided with a handle or holder H after the manner of a
pen or pencil. The line wire 1, 2, 3, 4 is attached at one end to the sender
apparatus by a clamping screw I and at the other end to the receiver at 4 to one
end of the coil of a relay magnet R M, the other end of which is connected with
the earth.
From the construction of the key board of the sender apparatus, it will be
evident that if the pointer is placed on the strip of metal representing the
letters at one side and at the other and passed along the edge of the base
plate A to C until it strikes D, four impulses will be produced, but if, on the
other hand, it is passed along the lower edge of A to five impulses will result,
in the first case the contact of the pointer E with the strip C¹ will produce a
somewhat longer breakage of the circuit, C₁ being non-conducting and in the
latter at a somewhat longer closure of the circuit will result. Then again,
in the first case the relay armature A¹ will be released for a longer period and in
D
077

page_text: the second case it will be attracted for a correspondingly longer period. Thus it
will be clear that if the pointer is placed on one or the other strip of ebony or
metal and passed along over the others to the stop D, the final result after a certain
number of impulses will vary according to whether the pointer was originally,
placed on a conducting or non-conducting strip, .e. according to whether the
pointer is passed along the upper or lower edge of the base plate A. Thus each
of the strips C₁ or will be capable of transmitting two different signs. The
magnet T M of the type wheel is arranged in the circuit 5, 6, 7 .. 14 of a local
battery which circuit is closed or otherwise according to the operation of the line-
wires. A is the spring retracted, pivotally mounted armature of the magnet T M
and mounted at its forward end are two pawls L and M, adapted to engage at
diametrically opposite points the tooth of a ratchet wheel N fast on a shaft close
to the type wheel shaft. These pawls are so arranged that when the armature A¹
is attracted the pawl M will turn the wheel N half a tooth further, the pawl L
sliding over the last half of its tooth into engagement with the next tooth, so that
on the armature being released the pawl L will operate to turn the type wheel
shaft in the same direction one tooth further, the pawl M this time sliding over
the last half of its tooth into engagement with the next. The ratchet wheel shaft
carries a gear G₁ adapted to engage a pinion H₁ of the type wheel shaft and the
two pawls L and M are connected by a spring B. From the above, it will be
clear that each impulse which is conveyed to the magnet T M will cause the type
wheel to be rotated two teeth, .e. for a space corresponding to one tooth of the
ratchet wheel but two types of the type wheel. The telegraphic signs are arranged
on two type wheels and O", the set of signs on the one wheel corresponding to those
of the current breaking strips of the sender and those of the other wheel to the
signs of the contact making strips. The types of the wheel are arranged in the
same order as those of the sender board and a space equal to two types is formed
on the type wheel and comes opposite the strip of paper to be printed, when the
wheel is in its position of rest. Thus if five impulses are imparted to the
magnet T M, the armature will be attracted five times and released four times,
this will turn the ratchet wheel N five teeth and the type wheel nine types
further, or the ninth type of the wheel O will be brought into position to
impress the strip. Since the order of the types or signs on their respective
wheels O, O is exactly the same as it is on the sender thus e follows n and so on,
on one wheel, and s, t on the other, and on the first impulse the empty space marked
with a square in Figure 1, it will be obvious that the ninth type will be b, which
is consequently brought into position to print.
A pin P is mounted on the armature A', which on the movement of the arma-
ture, makes contact alternately with one or other of the contact springs Q or R.
These springs are mounted on a metal post S which is connected with one end of
the coil of the printing magnet D M, the other end of the said coil being con-
nected to the positive pole of the local battery O B. The negative pole of this
battery is connected to a flat spring U resting on a small metallic disc T fast on
the type shaft. The local current will pass through the disc T and the body of
A
the apparatus to the armature A¹ and along the same to the contact pin P.
second disc is mounted on the type wheel shaft and provided with a contact
tooth Z with which a flat spring X is in contact, the said spring, like U being in
connection with the negative pole of the local battery. A third spring y which
is in contact with the body of the apparatus is connected to one end of the coil
of the magnet A M, the other end of which leads to the positive pole of the local
battery O B.
When the type wheel shaft is in its initial position the flat springs U and X
rest on pieces of ebony let into the periphery of the discs T and Vand designated
by W and Z. The circuit 14, 15 22 which effects the printing and the
circuit 25. 28, 19, 18, 17, 29 33 being thus interrupted, in spite of the fact
that contact is formed at P and Q. As soon, however, as the electromagnet T M
comes into operation, the current will pass to A M from the first impulse, but it
"

page_text: will not pass to D) M until the second movement of the armature A¹ in the opposite
direction, owing to the fact that the width of the pieces of ebony Z and W on
the discs V and T, on which the flat springs M and U rest, is, in the first case
less than the path of movement described by the respective disc on one movement
of the armature and in the second case greater than the first and less than the
second swing of the armature i.e. than the path described by the discs in two
movements of the armature.
The armatures of both magnets D M and A M are adjusted to turn somewhat
slowly so that they will not be attracted by the short local currents closed in the
receiving apparatus by the movement of the pointer at the sender end. The
printing magnet will not attract its armature until the longer impulse is imparted,
as explained i.e. after the type has been adjusted to impress the strip. When
the printing magnet has attracted its armature, the arm J will depress the end L¹
of the double arm lever L' M¹, the latter arm of which carries the printing roll K¹
and will slide out of engagement with the same at the moment the roll K¹ has
raised the paper strip against the type, thus allowing the printing roll to fall back
to its initial position by gravity or by any suitable spring device. Immediately
after this has taken place the downwardly extending arm N engages the upper
end of a vertically guided bar P¹, the lower end of which rests on the horizontal
arms of two pivotally mounted bell crank levers EF, having their upwardly
extending arms in engagement with downwardly extending pins B C fast on
the pawls L and M. This action of the bar P¹ releases the ratchet wheel N from
the pawls and allows the same and with it the type wheel and shaft to return
to their initial position under the influence of a spring W₁ (Fig. 3). The return
movement of the type wheel shaft will interrupt the circuit of the local battery
so that the printing magnet will release its armature H', which on rising will
turn the ratchet wheel W by means of the pawl V, the said ratchet wheel being
mounted on a spring pressed pivotally supported arm and adapted to carry the
spring pressed roll of the strip transporting roll pair.
The electromagnet A M serves to adjust the type wheel 0 0" axially on its
shaft in order to bring the second disc O of the same into operation when required.
Since, as already mentioned, the magnet A M is magnetised on the first move-
ment (attraction) of the armature A¹ of the magnet T M, but remains demag-
netised during all the following vibrations of this magnet, owing to the fact that
the flat spring X is out of contact with the contact making tooth Z of the disc V,
it will be evident that A M can only be operated by the first current impulse of
the local circuit, and only then on the condition that this impulse although short
is of a certain duration, the armature being adjusted to move somewhat slowly.
The attraction of this armature, will, however, only take place when the signs
are telegraphed, which are opposite the metal strips of the keyboard, in that in
this case the pointer will be placed on the metal strip, at which moment its speed
of movement is 0, which will cause a somewhat longer contact and consequently
line current, although the pointer may be immediately moved at a greater speed
along the edge of the base plate A.
Thus this first and somewhat longer impulse is the sole means of magnetising
28, 19, 18, 17, 29. . 33.
the magnet A M by the aid of the local current 25
The axial movement of the type wheel resulting therefrom will be seen from
Fig. 2. As soon as the wheel has been moved, a spring pressed pawl wll mounted
on the type wheel shaft comes into engagement with a hook of the type wheel
and couples the same in this position. On the return of the wheel to its initial
position, the pawl " is disengaged by a stationary pin z which it strikes as the
wheel returns.
Thus it will be clear that the signs corresponding to the metal strips of the key
board will have to be on the type wheel 0, whilst those corresponding to the
insulating strips will be on the wheel O. Thus it will be clear that since two
type wheels are employed, which may be brought into operation as required,
according to whether the pointer placed on a metal strip or on a nonconducting

page_text: strip (in which latter case the first impulse will be short as the pointer passes
rapidly over the same having started on a nonconducting strip) the number of
impulses necessary to produce the signs will be only half of those which would
be required were one type wheel required. The capacity of the telegraphic type-
writer will thus be nearly doubled for the same amount of current.
Although in the specification the non-conducting parts have been described as
ebony, it will of course be clear that they may be made of any suitable noncon-
ducting material.
Having now particularly described and ascertained the nture of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1: Telegraphic typewriter, characterized by a key bo. rd B having noncon-
ducting strips C C C and a stop I), the said strips being arranged at equal dis-
tances apart, and serving to impart, to the line wire, a series of impulses when
a contact pointer E is passed along the key board the said electric impulses
operating an electromagnet T M, having armature A¹ adapted to operate a type
wheel 0 by means of an escapement device L M N, until the contact pointer
has reached its final position and a longer impulse or current interruption has
been produced, which will enable the printing magnet to attract its armature,
said armature being loaded so as not to be influenced by the short impulses,
whereupon the type impression is produced on the strip and means for releasing
the type wheel immediately after the impression has been made and for demag-
netising the printing magnet as soon as the type wheel has attained its initial
position substantially as described.
2: The device for axially moving the type wheel in order to produce impres-
sions of the types on a second type wheel and thus to double the capacity of the
type-writer characterized by an electromagnet A M, having an armature loaded as
specified and means for magnetising the said magnet to attract its armature com-
prising a contact spring X and a circuit making disc V, having a contact tooth Z,
said armature being attracted when X and V are in contact and then only when
the first impulse produced by the pointer and keyboard is of longer duration than
the following thus producing the axial movement of the type wheel, means for
coupling the same in its position when moved and means for returning the same
to its initial position and releasing the coupling in the manner and for the purpose
substantially as described.
Dated this 23rd day of July 180e
MARKS & CLERK,
18, Southampton Buildings, London, and
13, Temple Street, Birmingham, Agents.