IMPROVEMENTS IN THE CONSTRUCTION OF GENERAL ELECTRIC TELEGRAPHIC MACHINES AND THE MODE OF WORKING THEM."
Year: 1867

page_text: LETTERS PATENT to François Thierry Hubert, of No. 190, East Street,
Walworth (Surrey), and Henry David Green Truscott, of No. 186, East
Street, Walworth (Surrey), for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF GENERAL ELECTRIC TELEGRAPHIC MACHINES AND THE MODE
OF WORKING THEM."
PROVISIONAL SPECIFICATION left by the said François Thierry Hubert
and Henry David Green Truscott at the Office of the Commissioners of
Patents, with their Petition, on the 1st July 1867.
We, FRANÇOIS THIERRY HUBERT, of No. 190, East Street, Walworth
(Surrey), and HENRY DAVID GREEN TRUSCOTT, of No. 136, East Street,
Walworth (Surrey), do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF GENERAL ELECTRIC TELEGRAPHIC
MACHINES AND THE MODE OF WORKING THEM," to be as follows:-
Our Invention relates to apparatus described in the Specification of a Patent
granted to us, and bearing date the 28th June 1866, No. 1725, and consists
in the combination with the mechanism of the indicator or dial therein
described of the apparatus or mechanism herein-after described for printing
either on a cylindrical or a flat surface.
The apparatus in its combined form consists of the mechanism connected
with the dial, that for moving the cylindrical or flat surface as required to
receive the printing, and that for bringing the same in contact with the

page_text: printing wheel as required. The mechanism connected with the dial is or
may be contained in a case at the upper part of the combined apparatus, and
consists of the barrell; the rollers for inking the types; the printing wheel with
types on it, such wheel being mounted as required at the back of the revolving
dial indicator, and working through an opening which communicates with the
apparatus below it; also the electro-magnets and springs; the electric com-
mutators; levers; buttons; and handles required. The case or compartments
underneath the above contains a moveable cylinder covered with paper suit-
ably arranged for printing mounted so as to be capable of revolving as required
on axis, and also of being moved horizontally to give the requisite spaces
between the lines of the printing, and further of being removed from the
apparatus when required. The cylinder is turned by means of two electro-
magnets with a lever escapement. After the cylinder has completed one
revolution it is moved horizontally through the space required by a lever
escapement acting upon mechanism, adapted for the purpose. The cylinder is
raised and brought in contact with the type on the edge of the printing wheel
as required for each impression by means of a set of multiplying levers which
are actuated by the electro-magnets in the lower compartment of the appa-
ratus. The cylinder is mounted at the two ends so as to be capable of removal
when the paper is covered with printing.
The apparatus above described may be used either as a single electric
indicator or as an electric printing telegraph. The dial indicator with its
apparatus is connected when required with the printing apparatus by means of
electric commutator at the lower pat
part of the dial case. Instead of a
cylinder a frame may be used on which is extended a flat surface of paper to
receive the printing, such frame being susceptible of motion both longitudinally
and transversely as required; by means of: suitable. mechanism worked .by.the
electro-magnets. This frame. may be removed from the compartment as
required. The type, of whatever size or character, inserted in the edge of the
printing wheel may be composed either of metal, gutta percha, or other suitable
material or composition. The above-described apparatus for printing may. be
combined.if preferred with other moving telegraphic dials.now in use.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FRANCOIS

page_text: THIERRY HUBERT, of No. .190, East Street, Walworth, in the County of Surrey,
Gentleman, and HENRY DAVID GREEN TRUSCOTT, of No. 136, East Street,
Walworth, aforesaid, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the First day of July, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Francois Thierry Hubert and Henry David Green Truscott, Her special
licence that we, the said Francois Thierry Hubert and Henry David Green
Truscott, our executors, administrators, and assigns, or such others as we, the
said Francois Thierry Hubert and Henry David Green Truscott, our executors,
administrators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF GENERAL ELECTRIC
TELEGRAPHIC MACHINES AND THE MODE OF WORKING THEM," upon the condition
(amongst others) that we, the said Francois Thierry Hubert and Henry David
Green Truscott, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that we, the said Francois Thierry Hubert and Henry.
David Green Truscott, do hereby declare the nature of our said Invention,
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement thereof, reference being had
to the Drawings hereunto annexed; and to the letters and figures marked
thereon (that is to say):-
Our Invention relates to apparatus described in the Specification of a,
Patent granted to us, and bearing date, the 28th June 1866, No. 1725, and
consists in combination with the mechanism of the indicator or dial, therein,
described, of the apparatus or mechanism herein-after described, for printing
either on a cylindrical or a flat surface.
The apparatus in its combined form consists of the mechanism connected
vith the dial that for moving the cylindrical or flat surface as required to.
eceive the printing, and that for bringing the same in contact with the,
rinting wheel as required. The mechanism connected with the dial is or may

page_text: be contained in a case at the upper part of a combined apparatus, and
consists of the barrel; the rollers for inking the types; the printing wheel,
with types on it, such wheel being mounted as required at the back of the
revolving dial indicator, and working through an opening which communicates
with the apparatus below it; also the electro-magnets and springs; the electric
commutators; levers; buttons; and handles required.
The case or compartment underneath the above contains a moveable cylinder
covered with paper, suitably arranged for printing, mounted so as to be capable
of revolving as required on its axis, and also of being moved horizontally to
give the requisite spaces between the lines of the printing, and further of being
removed from the apparatus when required; the cylinder is turned by means of
either one or two electro-magnets with a lever escapement. After the cylinder
has completed one revolution it is moved horizontally through the space required
by a lever escapement acting upon mechanism adapted for the purpose; the
cylinder is raised and brought in contact with the type on the edge of the
printing wheel, as required for each impression, by means of a set of multi-
plying levers which are actuated by the electro-magnets in the lower
compartment of the apparatus. The cylinder is mounted at the two ends so
as to be capable of removal when the paper is covered with printing.
The apparatus above described may be used either as a single electric
indicator or as an electric printing telegraph. The dial indicator with its
apparatus is connected when required with the printing apparatus by means
of an electric commutator at the lower part of the dial case.
Instead of the cylinder a frame may be used, on which is extended a flat
surface of paper to receive the printing, such frame being susceptible of
motion both longitudinally and transversely, as required, by means of suitable
mechanism worked by the electro-magnets; this frame may be removed from
the compartment as required.
The type, of whatever size or character, and in whatever way arranged.
and inserted on the edge of the printing wheel, may be composed either of
anetal, gutta percha, or other suitable material or composition.
The above described apparatus for printing may be combined, if preferred,
with other moving telegraphic dials now in use.
For the purpose of illustrating and more clearly defining the improvements
in accordance with our aforesaid Invention, we have in the accompanying
Drawings described a complete combined apparatus, which may be contained
in wooden cases provided with glass at the sides, and openings also therein;
this combined apparatus herein-after fully described is divided into two
principal compartments connected together one above the other.

page_text: The upper compartiment contains the mechanism adapted for giving alarm,
also also for working as may be the telegrams by the dial indicator, at the back
of which is affixed the printing wheel.
י
The lower compartment contains three other compartments, with the
mechanism adapted to each for obtaining the means of printing the telegrams
when required so to do, either on a cylindrical or flat surface suitably arranged
with
paper prepared either for obtaining a colored impression from the type
or for printing.
\
The apparatus herein described may be used either for producing alarm,
dispatching or receiving any message (in the same manner as other alpha-
betical apparatus), and as an electric printing telegraph; and being portable it
may be conveyed to any place for the purpose of putting an end to any
interruption caused accidentally on the line.
The number of elements of the batteries used for the main line must be
proportioned to the distance the current has to circulate and also to the
resistance, either strong or weak, which may be caused accidentally by any
alteration in the atmosphere or otherwise.
The number of elements of the local batteries must be proportioned to the
intensity of the current required for obtaining successfully the prompt, complete,
and perfect action of the armatures of the electro-magnets, either when the
current passes alternately from one of the electro-magnets to another, or when
the circuit is broken.
Outside on the top of the upper compartment (Fig. IV.), is a bell A
with its hammer H and an indicator J (a dotted line), which when up
shews alarm has been given. Above the revolving dial are placed the com-
mutators C, C1, C2, C3, for purposes herein-after fully explained, and
also a compass Cp, to shew the intensity of the electric current, from
whence it may come, either starting or arriving, when dispatches are sent
or received. The conducting wire of the main coil M L being used for
the other stations the passing of the current is also shewn by the continual
oscillations of the needle of the compass. The dial D, provided with 36
knobs K, has the printing wheel at the back thereof properly mounted with
type as required on the edge thereof, both shewing the roman and lower
case letters, the numeration, the punctuation, and the blanks represented
by a small cross and a double cross. By turning the dial indicator and the
printing wheel at the back thereof automatic action is produced and conveyed
to the other instrument when connected therewith. Upon the lower part of
the front of the upper compartment in the centre opposite the double cross is a
neelle N, behind which all letters, figures, or blanks to be noticed or repro-

page_text: duced must be directed, placed, and stopped. The small cross and double
cross being very often brought the one after the other behind the needle N,
it is very easy to know the apparatus is working well by watching the dial
indicator and by means of the glass and openings in the side of the cases, the
cylinder Cy, and also the four regulating screws S, SI, Rc, Rc 1, will be seen.
Inside of the upper compartment (Fig. IV., V., and VI.) is contained a
combination of wheelwork revolving altogether being properly mounted on
the same axis. The printing wheel P W with type Ty placed on the edge
thereof in the same order as the letters, &c., are indicated on the dial D is
working through an opening in the upper part of the under compartment,
thereby communicating with the compartments below it. The rollers R L
Nos. 1, 2, 3, 4, supplied with ink for inking the type, the roller No. 1 having
a brush for cleaning the type; the ratchet wheel R W commanding the bent
lever BL (which acts also as a catch) and causes at the same time the raising
of the indicator J and the hammer H of the bell A; this ratchet wheel R W
movės also a catch, lever C L which acts at the same moment with the bent
lever BL for preventing the wheelwork from turning only in one direction;
the crooked form of this catch lever C L is for removing the projecting commu-
tator Pc from the regulating screw S when the dial indicator is in motion;
the toothed wheel T W with a pinion P connected with the wheel of the barrel
B provided with a key Ky for winding up the same; the ratchet wheel R W 1
and its catch; the sinnons wheel S W for causing the lever Lr, with a roller,
to act as herein-after described; the electro-maguet E M; the armature Ar
acting as an escapement by the two arins No. 1 and 2 to be described; the
regulating screws S and S1; the buttons 6; and the handles h required.
The lower compartment (Figs. I., II., III.) contains three other compart-
ments placed one above the others. No. 1 contains a moveable cylinder, as
may be, or a surface plate SP suitably arranged with paper prepared either
for obtaining a colored impression from the type or for printing. A crooked
lever CL, an electro-magnet EM 2, the armature Ar 2, with a rod r con-
nected with a lever Lr, which at each attraction of the armature by the
catch Ch 1 moves one tooth of the wheel W, and the cylinder Cy by means
of.a trident Td (or axletree) which fits into the end of the cylinder Cy. On
the frame bearing the cylinder a surface plate is fixed, a grooved plate G p
which follows the revolving movement of a grooved roller Gr placed below it
in the other compartment; the said frame is provided with four guides G sliding
upon two metallic grooved slides fixed to the frame of the second compartment.
The second compartment (Fig. II.) contains a frame F 2 covering a
raiser R; it contains two metallic grooved slides GS, the multiplying

page_text: for all other stations either from ML to ML1, or from ML1 to
ML, the commutator C must be placed on the touch T 4, the commutator C 2
must be placed on the touch T5, the commutator C1 and C3 being
unconnected.
. For avoiding the use of two conducting wires two apparatuses are required
at each station, one apparatus for sending and another for receiving. With
two instruments the receiving station may correspond with the sending
station, and interrupt the transmission of a message.
When a communication is expected the commutators C and C1, being
unconnected, the hammer H with the indicator J of the alarm properly
arranged, the commutator C2 is connected with the touch T 5, the com-
municator C 3 with the touch T1, and the handle h1 with the touch T 6,
which opens the current and directs the same to the earth through the
button 61. Until receiving information, by alarm or otherwise, the bandle.h.1
is up for not using the printing mechanism, which must be kept always ready,
and the cylinder or surface plate, as may be, provided with the paper as
required.
The apparatus used for receiving acts automatically.
-
To give alarm The handle H 1 being up, the negative pole of the pile
being in communication with the earth, the positive pole + of the pile being
connected with the button b, also connected with the metallic end of the
lever Lr with a roller, the current passing through the regulating screw $ 1
when touched goes to the button 61, and thence to the electro-magnet E M
for producing its action, and thence to the touch T 2, connected with the
commutator C 1, follows the metallic conductor and the surrounding wire. of
the compass Cp, and passes by one of the touches T4 or T5, the respective
commutators C or C 2 being connected with the proper touch T 4 or T 5
according to the direction to be given to the current which follows the main
line M L or ML1 until the receiving station situated on the left or on the
right side, in which station, after having followed the surrounding wire of the
compass Cp of the apparatus receiving, passes through the coil of the electro-
magnet (for producing automatically the same movement in the mechanism of
the receiving apparatus as well as in the movement of the sending apparatus,
which movement is hereafter described), and goes out at the receiving station
by the touch To connected with the button 62, and also: connected with the
wire conducting the current to the earth by which the circuit is completed.
The apparatus at the receiving and at the sending stations being disposed
as explained by the two preceding paragraphs, alarm or information is given
by moving with the finger the knob K, shown on the dial indicator D, and

page_text: turning the dial from right to left once or several times round to the crosses,
and stopping each time when the double cross is placed exactly behind the
needle N, by which means the wheelwork is set in motion. When the capital
letter E is placed behind the needle N the sinuous wheel S W raises the roller
of the lever Lr, then its metallic end, to which is attached the conducting
wire, touches the regulating screw S1, the current arrives to the electro-
magnet E M, and causes the attraction of the armature Ar with two arms at :
the end, thereby acting as an escapement; when magnetized the arm 1 goes
out of the tooth 1 of the toothed wheel T W, and simultaneously, the arm 2
catches the tooth 2; the barrel B controls the motion. The ratchet wheel
R. W moves one tooth and causes the bent lever B L to raise the indicator.J;
and the hammer H to strike the bell A, then the hammer H rising for the
first time holds the indicator J upright. The wheel work at each tooth of the
said ratchet wheel R W is caught by the catch lever C L, and moving causes
the action of the projecting commutator PC, such action (turning to account
when the mechanism of the lower compartment is used for printing) to be
herein-after described.
By acting as above stated the dial of the apparatus used for receiving
shows the capital letter: E. The armature Ar of the electro-magnet E M
will remain attracted until the dial of the apparatus used for sending passes
to the following lower case letter e, or until another letter or the double cross
is placed behind the needle N.
The other action of the mechanism is obtained by placing the following lower
case letter e exactly behind the needle N, then the dial indicator moves one
letter only; and the wheelwork one tooth, the said lower case letter e arriving
exactly behind the needle N, the electric current of the main line is broken,
the armature of the electro-magnet in each seperated apparatus is demagnetised,
the spring of the barrel B causes the wheel of the barrel to act with the
pinion P commanding the wheelwork, the arm 2 of the armature Ar goes out
of the tooth 2 of the toothed wheel T w, and simultaneously the arm 1 catches
the tooth 2; then the sinuous wheel SW does not rise, the roller of the
lever Lr, the metallic end of, the lever Lr, to which is attached the con-
ducting wire, having ceased to touch the regulating screw S 1, the current is
broken thereby. The ratchet wheel R W; which having moved one tooth, is
caught, and the bent lever BL. has caused alarm. These parts having
acted as stated for directing the first capital E behind the needle N. The
same result, explained for the said capital letter E will be obtained by
directing exactly behind the needle N any one of the other capitals A. I. O..
U, S, D, C, D, F, N, G, I, J, K, L, M, I, @,
, A, I, 4, and the

page_text: .; ?, and also the figures 1, 3, 5, 7; 9; and the little cross representing: a
blank, the whole of the above-mentioned: causes the circuit: to be open; on the
contrary the circuit is broken, and causes the mechanism to act.as stated, for
the lower case letter e, when any, one of the other lower case letters a, i, o, u,s,
b, c, d, f, n, g, h, j, k, l, m, p, q, r, v, w, x, y, z, and the, !, and also thé
numbers 2, 4, 6, 8, 0, and the double cross are directed exactly behind, the.
needle N.
:
T:
די
Having explained the action of the dial indicator, and its mechanism, the:
following statement will explain fully the mode of working and thereby
obtaining a printed' message..
3:2
.
"The printing mechanism requires a local battery, its positive pole:+is
connected with the handle H (Fig. IV); for directing: ad libitum"; the:
current through the regulating screw S,.and. the projecting, commutator :P c,
to the third compartment (named the raiser, Fig. III.); and thence to: the
printing compartment (Fig. I.). where, after...the paper. has been brought in
contact with the inked type and moved for receiving: the printing of another
impression goes to the button b, which directs it to the negative pole of:
the said local battery, and the circuit is completed.
(
.
)
The current reaches the conducting wire, attached to the upper metallic
part of the armature Ar 1, (Fig III.) which touches the regulating screw of
the commutator Rc; the said armature Ar 1, not yet being attracted, the
current through the regulating screw and the. commutator Rc connected
with the electro-magnet EM 1, traverses the surrounding coil, and follows
the conducting wire connected with the negative.pole of the local battery
for the purpose of opening the circuit, and obtaining the magnetic attraction '2
of the said armature Ar1; but: for changing the direction of the current,
as promptly as the magnetic attraction of the armature Ar1 is produced,
the said armature being attracted, the electro-magnet ceases suddenly to
receive the current, because the said. upper metallic part of the armature.
then, attracted and carrying the conducting wire touches the regulating 3
screw of the commutator Rc 1, for sending without any..interruption-the
current through the said regulating screw, and the commutator. Rc 1, .to the
printing department. (Fig. I.). There the current arrives from..the com-
mutator Rc 1; (Fig. III.), to the button b (Fig. 1), connected with the
electro-magnet E M 2, traverses its surrounding coil and goes to the button b, 3
connected with the negative pole of the local battery, for completing the
circuit, but as soon as the current has arrived, and produced the magnetic
attraction of the armature Ar 2, it ceases to traverse the said surrounding
coil of the electro-magnet EM 2 the armature Ar 1 of the raiser (Fig. III.)
-

page_text: breaking the circuit by not touching the regulating screw of the commutator
Rc1. The current traversing so promptly the above direction requires the
continual and regulated action of the dial indicator for producing successively
another letter or figure, otherwise the double cross of the dial indicator
must be placed exactly behind the needle N (Fig. IV.), and at once the
handle h must be raised for breaking the. circuit. By turning the dial
indicator for directing the letters required exactly behind the needle Ñ, as
it has been herein-before fully explained, the type inked by the roller No. 4
sufficiently supplied with ink, will print or otherwise produce a coloured
impression upon the paper in the following manner :-
Any letter or type being placed in the said position the catch lever.CL
(Fig V.) enters the proper tooth required of the ratchet wheel R W; see
Fig IV., and the projecting commutator Pc, which was breaking the circuit
during the.revolution of the dial indicator, causes the contact necessary for
the passing of the current, which, as above stated, produces the attraction of
the armature Ar 1 (Fig. III.); the metallic part of this armature acts as
a commutator between the two regulating screws Rc and Rc1 for producing
the result explained, and by its lower part acts as a lever commanding the
multiplying lever LM, 1, 2, 3, and causes by the four crooked levers CL 4,
connected by two rods Rd, the raising of the two frames placed above
(Fig. I. and Fig. 2).
Then the impression is obtained, and the cylinder Cy or the flat surface
plate moves for disposing the paper to receive another impression.
A projecting tooth pt (Fig. 1.), fixed to the cylinder Cy causes the crooked
lever to act upon the multiplying lever L M, of the second compartment;
commanding the grooved roller Gr (Fig. 2"), which revolves the distance of
one tooth, for moving horizontally the grooved plate Gp (Fig. I.), for the
purpose of retaining the requisite space between the lines of the printing.
A cylinder, or flat surface plate, suitably covered with paper is placed,
changed, or removed from the printing compartment (Fig. 1.) by the
openings O and O1.
For Printing on the Flat Surface Plate.-When the frame F R:(Fig. 1a),
bearing the other frame F R 1, and the plates Pla (on which a flat surface
of paper is suitably placed for receiving the printing) is to take the place of
the cylinder Cy (Fig. 1) it is to be done as follows, viz.-
1st. By unscrewing the trident Td placed at the end of the cylinder Cy
and removing the same therewith by the two openings O and Ol, and leaving
the grooved plate Gp, the electro-magnet E M 2, the armature A r 2, the rod r,
the lever Lr, the catch Ch 1, the wheel W, and the crooked lever C'L.

page_text: 2nd. By putting in the axis A, T, (Fig. 1a) as applied to the other
mechanism in the place of the cylinder when removed.
This mechanism consists of a movable frame F R 1, grooved upon two
grooved rollers G RI and G R 2, for moving horizontally to and fro; it is
provided with four guides Gu sliding upon two metallic grooved slides G S;
a slope or camber is applied to each grooved roller for the purpose herein-
after described, viz :—
To the said frame F R is affixed a lever L, a spring Sp, a regulating
screw Rs, and a self-acting quadruple lever L L, which being attached
to the crank pin C p becomes thereby extended and follows the frame FR 1
(bearing the plate suitably covered with paper for receiving the printing),
by its horizontal motion from the right to the left side. When a line is
printed the grooved parts of the frame being placed above the managed
slope or camber M.S of the said two grooved rollers G R 1.and G R 2,.
the frame F R 1 ceases to be connected with them, and the frame F R 1
moves from the left to the right side, the power of the spring S p upon the
lever L' acting upon the crank pin Cp fixed to the horizontal lever roller H.R
and upon the longest arm L a of the quadruple lever L L, then the frame
FR 1 returns to its proper place with great celerity.
The types on the edge of the printing wheel may be kept clean and ins
proper order (when necessary) by the use of a brush, which can be applied at
the opening O2 adapted for that purpose.
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, we hereby declare that what
we claim as of our Invention under the above in part recited Letters s
Patent is,
First, the combination of mechanism herein-before described, consisting
essentially of a dial indicator of the kind represented and described,
with the arrangement of letters, and figures, and punctuation, &c.,
represented thereon, adapted for printing, such dial indicator having
mounted behind it a printing wheel, with corresponding types on
its edge; also a cylinder covered with paper to receive the printing,
and mounted so as to admit of its being turned on its axis and
moved forward, as required, or a frame with a flat surface of paper
extended on it, and susceptible of motion both longitudinally and
transversely; also a system of levers and other mechanism adapted
to raise the cylinder or flat surface plate carrying the paper in
contact with the types on the printing wheel.
Secondly, the combined mechanism with the wheelwork and the alarm, and

page_text: the means of indicating thereby that attention has been called, if
unobserved by or during the absence of an attendant.
the mode described of preventing the dial indicator and the revolving
wheelwork connected thereto from turning except in one direction;
also the mode of changing and applying the projecting commutators
so as in all cases to avoid any interruption in the transmission or
receipt of messages of any kind, either by the alarm or the indicator,
or for printing should the main line be provided either with many
conducting wires or with only one.
the arrangement of a system of levers and other mechanism
actuated by the electro-magnets, whereby either the cylinder or the
flat surface plate carrying the paper is raised and brought in contact
with the types on the edge of the printing wheel as required, and
also by which such cylinder or flat surface plate is moved as
required in order to obtain the blanks and spaces between the
letters and the lines when printed as required.
he adaptation and application of the mechanism for printing, and the
printing wheel, with the requisite types fixed thereon for the purposes
herein before fully described, to such other moving telegraphic dials
now in use as may admit of such application.
e disposition of apparatus of any other size with the dial indicator
and the printing wheel with the requisite types fixed thereon, and
the mechanism for printing as herein-before fully described, and
capable of containing the cylinder or flat surface plate of a sufficient
dimension requisite for the suitable arrangement of a sheet of
paper of whatever size may be required to be covered with printing.
witness whereof, we, the said François Thierry Hubert, and Henry
David Green Truscott, have hereunto set our hands and seals, this
birty-first day of December, in the year of our Lord One thousand
ight hundred and sixty-seven.
(L.B.)
HENRY DAVID GREEN TRUSCOTT. (L.S.)