IMPROVEMENTS IN TELEGRAPH APPARATUS
Year: 1872

page_text: LETTERS PATENT to William Morgan-Brown, of the Firm of Brandon
and Morgan-Brown, Engineers and Patent Agents, of 38, South-
ampton Buildings, London, and 13, Rue Gaillon, Paris, for the
Invention of "IMPROVEMENTS IN TELEGRAPH APPARATUS."-A com-
munication from abroad by James Rowe, of Paterson, New Jersey,
United States of America.
.
Sealed the 14th February 1873, and dated the 14th September 1872.
PROVISIONAL SPECIFICATION left by the said William Morgan-Brown
at the Office of the Commissioners of Patents, with his Petition, on
the 14th September 1872.
I, WILLIAM MORGAN-BROWN, of the Firm of Brandon and Morgan-
Brown, Engineers and Patent Agents, of 38, Southampton Buildings,
London, and 13, Rue Gaillon, Paris, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN TELEGRAPH APPARATUS,” to be as
follows:
--
This Invention has for its object improvements in telegraph apparatus,
and the first part relates to an escapement so arranged and constructed

page_text: that a regular and positive step by step motion of the printing or type
wheel and shaft may be secured, and said type wheel be constantly
under such control that any desired letter may by the making and
breaking of electrical currents be presented to the printing lever at the
proper time, and an impression of the same be thereupon obtained. The
parts employed are a lever with pawl and dog attachments operating
upon a ratchet wheel secured to a sleeve on the type wheel shaft, and
connected with an escapement wheel fixed to the same shaft, and having
its pins or detents projecting from one side of the periphery thereof,
which engage wedge-shaped pallets fixed on the armature lever, with 1
the edges of the same pallets standing in opposite directions, and located
far enough apart to just engage and clear the said pins or detents. The
connection of the ratchet wheel to the escapement wheel is by a spiral
spring coiled on the sleeve to which the ratchet wheel is attached, which
is so located as to be constantly in a state of compression between its 1
two attachments. The pawl and dog of the ratchet wheel are of ordinary
construction for such purposes..
The second part of my Invention relates to telegraphic printing which
is accomplished by the aid of a printing magnet and lever operated by a
switch circuit which offers an alternative route for a part of the current 2
of electricity whenever the escapement lever is allowed to remain in.
contact with a pin provided for the purpose, which completes the switch
circuit for the necessary length of time to act upon the printing magnet.
At all other times, although intermittent contact occurs, time is not
given to permit the completion or occupation of the circuit by the 2
current.
The third part of my Invention relates to the devices for feeding the
strip of paper to the type wheel for its action by co-ordinate step by step
movements, for the proper spacing of the telegraphic letters or signs.
The devices concerned are, first, an upright arm attached to the printing
lever; second, a connecting rod or link suspended at an angle at about
forty-five degrees; third, a vertical sliding bar moving in a horizontal
slide, of course the two being at right angles with each other, the lower
end of said vertical sliding bar being sharpened so as to engage and
carry forward the printing slip when pressed upon, and through the same
into the slot provided in the plate in which the slip slides, and the upper
end of said slide being secured loosely by a pin to the lower end of the
link. The horizontal slide works in stationary guides, and the vertical

page_text: one in guides provided in the horizontal slide itself. The vertical slide
has two pins secured therein, one above and one below the horizontal
slide. These pins are so placed as to allow slight play in the vertical
bar, and may take in recesses provided in the horizontal slide or on the
plane edges thereof at will. The motion thus permitted allows the point
of the vertical bar to engage and free itself from the printing slip at the
proper time.
The fourth part of my Invention consists in providing a printing pad,
composed of cork. The object is to secure a substance which will absorb
and not be injured by the oil of the printing ink as rubber. The
material generally used is injured while absorption is small, but sufficient
to cause softening thereof. This softening frequently causes the printing
slip to adhere to the rubber printing pad, thereby deranging and hindering
the operation of the machine. Cork is also much more elastic and
; durable than rubber cloth...
The fifth part of my Invention relates to devices for securing unison,
either between the receiving machine and the transmitter, or between
the transmitter and any number of machines on a given circuit, as the
case may be. In other words, the object of this part of my Invention is
to place the means of regulating one or more machines about to be
operated upon in the hands of the operator. The devices used are, first;
a sliding, sleeved collar placed on the type wheel shaft, preferably, and a
spiral spring, one end of which is attached to this collar, and the other
end to a stationary pin or fixture. This collar has an arm projecting
from the side opposite the spiral spring, to one end of which it is attached
and bent at right angles or elbowed. This arm is bevelled on both sides
where it comes in contact with a carrier pin on the back of the escape..
ment wheel, which pin is itself also bevelled at the point on one side, or
a transverse section of this arm may be described as wedge shaped. The
square edge on the side of the periphery of this collar which is toward
the escapement wheel is cut away so as to present a continuous bevel
against which a bevel pointed adjustable post, located on the printing
lever strikes whenever the said lever is called into action to disengage
the parts. The second device is a vertical locking and unlocking bar
resting on a pin at the bottom so to overhang, that its own over-
balance may unlock the main escapement lever, a fixed arm of which it
engages. This locking bar has projecting across the path or plane of
motion of the elbowed arm above described a stop pin or arm, the
O

page_text: function of which is to engage said elbowed arm, and receiving there-
from sufficient lifting or pushing force to push said locking har, to which
is fixed over to and engaging the locking arm of the main escapement
lever. The upper part of this locking bar is hook shaped for this purpose.
The sixth part of my Invention relates to the transmitting machinery,
and consists in a peculiar mode of opening and closing the circuit as
follows, viz. :-By a sliding bar having an adjustable connection block
operated by a link, itself connected to a system of cog wheels operated
by hand, weight, or spring brought intermittently into contact with a
corresponding connection block attached to a spring, and thence with the
circuit. The link is attached to the operating mechanism at one end,
and by a slot which is larger or longer than the pin which secures it.
By this means I prevent any tremulous or involuntary motions, such as
'are likely to come from the hand of inexperienced operators, from
returning the sliding bar block into unintended connection with the
spring block after the connection has been once broken, thereby
deranging the unison. This slot is made longer than the distance over
which its connecting pin can be moved before a spring pawl attached to
the crank arm or handle takes in a tooth of a fixed wheel provided with
teeth on its periphery, and prevents further back motion, and con-
séquently all danger of false connection.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Morgan-Brown in the Great Seal Patent
Office on the 10th March 1873.
i
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM 2
MORGAN-BROWN, of the Firm of Brandon and Morgan-Brown, Engineers
and Patent Agents, of 38, Southampton Buildings, London, and 13, Rue
Gaillon, Paris, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of September, in the year 30
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Morgan-Brown, Her special license
that I, the said William Morgan-Brown, my executors, administrators,

page_text: and assigns, or such others as I, the said William Morgan-Brown, my
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,
band vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN TELEGRAPH APPARATUS," a communication to me from abroad by
James Rowe, of Paterson, New Jersey, United States of America, upon
the condition (amongst others) that I, the said William Morgan-Brown,
) my executors or administrators, by an instrument in writing under
my, 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 I, the said William Morgan-Brown, do hereby
declare the nature of the 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, that is to say:—
The first part of my Invention relates to an escapement so arranged
and constructed that a regular and positive step by step motion of the
printing or type wheel and shaft may be secured, and said type wheel be
constantly under such control that any desired letter may, by the making
and breaking of electrical currents, be presented to the printing lever at
the proper time, and an impression of the same be thereupon obtained.
The parts employed are a lever with pawl and dog attachments operating
upon a ratchet wheel secured to a sleeve on the type wheel shaft, and
connected with an escapement wheel fixed to the same shaft, and having
its pins or detents projecting from one side of the periphery thereof,
which engage wedge-shaped pallets fixed on the armature lever, with
the edges of the said pallets standing in opposite directions, and located
far enough apart to just engage and clear the said pins or detents. The
connection of the ratchet wheel to the escapement wheel is by a spiral
spring coiled on the sleeve to which the ratchet wheel is attached, which
is so located as to be constantly in a state of compression between its
two attachments. The pawl and dog of the ratchet wheel are of
ordinary construction for such purposes.

page_text: The second part of my Invention relates to telegraphic printing which
is accomplished by the aid of a printing magnet and lever operated by a
switch circuit, which offers an alternative route for a part of the current
of electricity whenever the escapement lever is allowed to remain in
contact with a pin provided for the purpose, which completes the switch
circuit for the necessary length of time to act upon the printing magnet.
At all other times, although intermittent, contact occurs, time is not
given to permit the completion or occupation of the circuit by the
current.
•
The third part of my
Invention relates to the devices for feeding the
strip of paper to the type wheel for its action by co-ordinate step by step
movements, for the proper spacing of the telegraphic letters or signs. The
devices concerned are, first, for an upright arm attached to the printing
lever; second, a connecting rod or link suspended at an angle of about
forty-five degrees; third, a vertical sliding bar moving in a horizontal
slide, of course the two being at right angles with each other, the lower
end of said vertical sliding bar being sharpened so as to engage and
carry forward the printing slip when pressed upon, and through the same
into the slot provided in the plate in which the slip slides, and the upper.
end of said slide being secured loosely by a pin to the lower end of the
link. The horizontal slide works in stationary guides, and the vertical
one in guides provided in the horizontal slide itself. The vertical slide
has two pins secured therein, one above and one below the horizontal
slide. These pins are so placed as to allow slight play in the vertical
bar, and may take in recesses provided in the horizontal slide or on the
plane edges thereof at will. The motion thus permitted allows the point
of the vertical bar to engage and free itself from the printing slip at the.
proper time.
די
The fourth part of my Invention consists in providing a printing pad
composed of cork. The object is to secure a substance which will absorb
and not be injured by the oil of the printing ink, as rubber, the material
generally used, is injured, while absorption is small but sufficient to
cause softening thereof. This softening frequently causes the printing
slip to adhere to the rubber printing pad, thereby deranging and hindering
the operation of the machine. Cork is also much moro elastic and
durable than rubber cloth.
The fifth part of my Invention relates to devices for securing unison,
either between the receiving machine and the transmitter, or between

page_text: .block after the connection has been once broken, thereby deranging the
unison. This slot is made longer than the distance over which its con-
necting pin can be moved before a spring pawl attached to the crank
arm or handle takes in a tooth of a fixed wheel provided with teeth on
its periphery, and prevents further back motion, and consequently alt
danger of false connection.
"
Figure 1, A is a side elevation shewing the printing lever, ratchet, and
escapement wheel, &c.; Figure 2, A is a side elevation, shewing addi-
tional details in place. -
Figure 1, B'is a side elevation, shewing modified devices for unison"
purposes; Figure 2, B is an end view of the same.
:
Figure 3, B is a side view of the details concerned in feeding the
printing slip.
}
Figure 1, O is an enlarged end view of the unison devices.
. Figures 2 and 3, O are a side and end elevation of the feeding
devices.
Figure 1, D. is a top view of the transmitter with wooden table or
*support cut away to shew the transmitting devices.
A is the armature of the magnet M for actuating the lever L, which
carries the escapement pallets p', p', the pawl r, and V shaped cam ;
A³ is the armature of the magnet M², for operating the printing lever I'
which bears the pin p, the printing pad O', the bevel pointed post n, and
its adjusting screw m; A' is the connecting and actuating link of the
paper feed provided with pins, ; A' is the upright bar attached to
the lever I', which operates the feeding devices; a is the locking plato 2
of the lever L; a¹ is the plate on which the printing slip moves; B and
B' are the wooden and metallic base plates of the instrument; B' is a
boss on one of the posts D³, on an extended arm of which the lever is
hung; O is the counterweight separating the two pins and i', which
connected complete the printing circuit, and is to withdraw the latch h. 3
promptly from the ledgee of the lever, on which the lip e¹ of the
latch rosts; C' is the printing pad; C* is the crank of the transmitter ;
D, D', D', and D³, are various posts and supports of the various devices
as shewn; d is the beveled collar to which the elbowed arm j is
attached; d' is the horizontal slide perpendicular to the sliding feed 3
bar E; are the bearings of the slide bar in the transmitter; E is

page_text: the sliding feed bar sharpened at the end, to penetrate and carry along
the printing slip or strip; e is a ledge on the lever ; e' is a corre-
sponding lip on the latch h; e³ are guide screws for holding the hori-
zontal slide d in place; G is the stationary block or plate to which tho
two feed slides moving perpendicularly to each other are attached; g is
a gauge screw regulating the position of the counterweight 0; 9¹ and 9³
are guage screws regulating the movement of the lever L, and furnishing
the means of connecting the printing circuit directly from the lever L,
instead of from the lever under some circumstances; L is a latch or
stop to break the connections of the printing circuit through the lever l';
* and are connection points for completing the printing circuit; aro
securing pins of the link A'; is a pin on the escapement wheel, or an
independent wheel on the same shaft or sleeve which engages the
elbowed arm j, and is located so as to secure unison; J is the connecting
block of the transmitter which serves to close and open the transmitting
circuit; j is an elbowed arm inserted in the bevel edged collar d; Jis
the stop or rest of the latch h; k is the locking lip of the locking
lever L'; ¹is the connecting block of the transmitter; L is the
escapement lever; I' is the pointing lever; L' is the locking lever;
is the sliding rod of the transmitter; is the pendent lever used to
complete the pointing circuit; M is the actuating magnet; M' is tho
pointing magnet; p is a pin in the lever L', on which the extended pin or
arm p¹ of the counterweight C rests; is a pin on which the lever rests;
p' and p' are pins securing the springs S'; p' is the dog or stop which
maintains the compression of the spring S, by taking in the teeth of the
ratchet ¹; p³ is the attaching pin of the spring S', for keeping the
lever in place; p', p', are the two V shaped pallets which engage the
pins p' of the escapement wheel W; R is the toothed wheel on the
crank O' of the transmitter; is the ratchet pawl; and ¹ the ratchet
wheel, the last secured to a sleeve and compressing the spring S between
it and the escapement wheel; S is the ratchet and escapement spring;
S' is the spring holding down the dog P³; S' is the spring of of the lever L;
S³ is the spring of the lever L'; S' is the spring of the lever ; S³ is
the spring of the pawlr; 8° is the spring of the counterweight O and
latch h; S' is the spring of the collar d; S' is the spring holding the
printing slip on the plate a'; t and are the attaching pins of the
spring 8; is the sharpened point of the feeding bar E; is the link
of the transmitting rod 1; U and U³ are the connection posts;
opposing shaped cams on the levers Land P; o² is the support of the
and o² are

page_text: lever L; W is tho escapement wheel; wis the wire forming part of
the printing circuit, and insulated by insulator X; wo¹ is the connecting
wire of magnet, M; to the same of the magnet M; (S, D, is the spring
of the dog ps, of the transmitter; stop on the lever L.)
The indicator dial and mechanism forming part of Figure 1, D, may
be omitted as not intended to be described by the lettering shewn.
The operation of the machine is as follows, viz. :-The wires of the
circuit being connected with the posts U and U¹, and this circuit
being provided with a transmitter of either of the common forms, or
constructed and operating like that set forth in this application
whenever the transmitting instrument is made to close the 'circuit,
the magnet M, armature A, and lever L, and attachments are brought
into action, thereby depressing the pawl r, actuating the ratchet
wheel r¹, and thereafter, by permission of the escapement detents p
and p, freeing a pin p', also actuating. the type wheel W, one step:
letter, figure, or character, according as the type wheel may be arranged.
The sequent opening of the circuit by the transmitter releasing the
armature A from the control of the magnet M permits the type
wheel W, which feels the pressure of the ratchet spring S³ (see
Figure 2, B) to take another step. The type wheel W being secured
to its shaft, and the ratchet wheel ' being attached to a sleeve sliding
or rotating on said shaft, and further, one end of the spring S being
secured to cach, viz., the type or escapement wheel W and the said
sleeve, and further said spring S being in a state of compression and
ready for action, the downward movement of the pawl upon the
ratchet wheel is expected and arranged to give the spring S an
amount of compression equal to the requirement of the type wheel
during both the downward and upward movements of the lever L.
The type wheel W makes use of only half of this compression upon
the downward movement of said lever, because although the pallet p',
which has its edges presenting upward, clears the pins p³ of the type
wheel, the opposite pallet p' having its edge downward engages said
pin pas freed, and prevents further movement of the type wheel W
until the circuit through the magnet M is broken, and the spring on
the outer end of the lever L is allowed to act when the necessary
freedom is given, and the spring S surrenders the remaining half of its
compression or changes the same into motion of the type or escapement.
wheel.

page_text: Repeated closing and openings of the circuit with suitable battery
power connected therewith, as above described, will cause the entire
revolution and any number of revolutions of the type or escapement
wheel.
The printing of the letter desired is accomplished as follows, viz. :—
The double beveled pin on the lever L at each upward or downward
movement of that lever slides on the corresponding beveled projection
P
upon the upper and adjacent part of the pendent lever P. This lover ♫
being free to move on its pin is consequently vibrated at each motion
of the lever L by the mutual action and reaction caused by these
beveled surfaces in contact with the spring St. The lever has on
its lower extremity a connecting point so placed as at each vibration
of to come in contact with the pin which is insulated from the.
immediate or adjacent machine, but connected with the wire which
leads through the printing magnet M. During sufficient rapid action
of the transmitter although the pins ; and come in contact at each
closing and opening of the circuit for want of sufficient time to set
up a flow of the electric current through this additional or switch
route strong enough to operate the armature A' and the lever 1, no
action of the printing mechanism takes place, but whenever the beveled
surfaces and are allowed to fully lap on each other and rest in
contact for a space of time, longer or shorter, according to the strength
of the battery, perfection of contact, &c., the pins and being in
contact, a choice as it were of two routes is offered to the current,
leading one through the electro-magnet M, and the other through the
electro-magnet M³, under well-known laws of electrical dynamics. In
such circumstances part of the current will be diverted through the new
and nearly unoccupied route, via magnet M², and the printing lever L
being actuated thereby, the letter presented to the printing pad will be
impressed upon the passing strip of paper provided for that purpose.
•
:'
Supposing the printing just described as taken place on a closed
circuit, the succeeding opening of the circuit will permit the spring S³.
to take the lever L in charge, and thereby operating on the beveled
surfaces and of the lever break the connection of the switch
5 circuit at the pins and i, provided the spring S* be sufficiently strong.
But in practice the spring S should be made as weak as the proper
action of the lever L will permit, and therefore it becomes desirable
under the arrangement described to break the switch connections

page_text: immediately after the printing has been accomplished by subordinate
devices. This is done as follows, viz. :-The pin p inserted in the lever L'
takes under the lever p¹ which is inserted in the counterweight C. The
sudden action of the electro-magnet M' on the armature A¹ and
lever I consequently gives a sudden upward impulse to these two pins p
and lever p', and the counterweight C being hung with the larger part
of its weight in front of the perpendicular through the point of
suspension, and being aided by the action of the spring S also receives
an upward and forward motion, whereupon its shoulder takes on the
under side of the latch lever h, and lifting / from its rest, J' carries the lip 1
thereof into contact with the rounded termination of the pendant lever *;
the slipping of this lip e¹ on the rounded surface e under the influence
of the sudden blow delivered by the counterweight C tends to separate
the pin i and and so break this switch connection. The motion of
the lip e' is intended to continue until it rests on the ledge at e provided 1
on the lever P, and remains there, insuring a gap in said e connection.
The succeeding action of the lever L necessarily moves P, releases the
latch h, and permits rapid revolutions of the type wheel W without
printing any letter until the desired one is presented to the printing pad,
when the requisite delay as before brings the electro-magnet M² or 2
lever L' into action again, and printing follows. Following the impulse
given to the counterweight C by the printing lever, that lever prints and
then drops, allowing the counterweight O also to drop and place the
spring So in a state of tension. The object of this is to so aid the weight
of the latch that it shall escape from the control of the ledge e on the 2
lever instantly upon the subsequent motion of that lever.
2
It may be deemed desirable under some circumstances to use a local
battery and circuit to operate the printing mechanism above described.
The local battery is connected with the screw posts U and U', and the
closing of the local circuit is effected both on the open and closed main 3
circuit by the mechanism that switches part of the main current when
that is used to do the printing through the printing magnet M³, conse-
quently the type wheel W takes two steps to every pin, and has a letter
presented to the printing pad at each step, and prints both upon the
open and closed main circuit; owing to the action of the double beveled 35
surfaces and o³ on each other, the pins ; and are in contact only
when these surfaces are in a state of rest, i.e., at the beginning and end
of cach motion of the lever L, whether that motion be caused by the

page_text: action of the magnet M on a closed circuit or by the spring S³ on the
open circuit.
The second part of my Invention may however be carried out in a more
simple manner, as shewn in Figures 1 and 2, B, the operation of which
may be described as follows:-Omitting the lever and its attachments,
the operation of which has just been described, and for the purpose of
this description abandoning the attempt to shew how printing may be
done on the open circuit, the printing mechanism otherwise being the
same, an alternative connection is made with the printing magnet M¹
from one post, the other wire of which is connected with the screw
stop g', so that when the closing of the circuit of the magnet M occurs
the back end of the lever L will come in contact with said screw,
and complete the printing magnet circuit, which leads from the printing
magnet M to the opposite binding post through the framework and
plate of the machine. The contact of the lover L with the screw g³ being
very brief while the type wheel is being rotated by the rapid action of tho
magnet M, sufficient time is not given for the completion of the switch
circuit, and the consequent action of the printing lever.. It may be
stated in passing however that a local battery being connected in circuit
with the adjustable screw pins g' and through the magnet M' printing
will take place on both the closed and the open circuit.
The operation of the third part of my Invention is as follows, viz. :—
The strip of paper being placed in charge of the flat spring 8' and the
point of the vertical sliding bar E, which passes through a slot in the
spring S for that purpose, and through the paper strip, and into a slot
in plate upon which the paper rests, the lever I being about to rise
for the purpose of bringing the printing pad into action, the arm A³ is
also prepared to rise, and when it does so, being rigid and rigidly
attached to the lever I', in rising it lifts the link A'. The lifting of the
link A³ slides the vertical bar E upward in the horizontal slide d³, thus
withdrawing the point from the paper strip preparatory to the next
step. When the vertical slide E has proceeded until the pin x secured
in E strikes the horizontal slide dits further vertical motion ceases,
and thereupon the elevation of the arm A' and link A³ continuing the
horizontal slide a begins to move in its guides, and continues to move
the necessary distance for the spacing of the letters; next follows of
course the drop of the printing lever L, and of the series of parts
attached to the slide E. When the slide E has dropped far enough to

page_text: engago the paper strip, and penetrate the slots as before, the upper.
pin X' strikes on the upper side of the slide d³, and, preventing further
motion in that direction, causes the horizontal slide d' to return in its
guides carrying the paper forward for the required distance. In printing
a message these operations are repeated as every letter is printed.
6
The operation or qualification of the fourth part of my Invention con-
sists in this, viz., that while rubber, the substance usually provided for the
printing pad is liable to be softened by the contact and absorption of oil
from the printing ink, cork is not so, and consequently the adherence of
the paper slip to the pad from such result is prevented; cork scems 1
rather to be benefited than injured by whatever contact may occur with
printing ink.
?
The operation of the fifth part of my Invention is as follows :- -It
frequently occurs when many receiving instruments are located on one
circuit and operated by one transmitter that they or some of them fall 1
out of unison, and instead of printing the same letters each time as the
operator supposes he is doing by the indications of the transmitter, he is:
printing entirely different ones at those machines not in unison with the
transmitter, The same thing occurs between the transmitter and the
receiving machine on a circuit, and the object of the unison devices 2
being to correct this evil provision is made to bring the transmitter and
all the instruments on the same circuit into harmony by indicating the
same letter at one and the same time.
The escapement wheel W (see Figure 1, C) has upon its outer side
the pin which is bevelled on one side. The sleeved collar d (same 2
Figure) is beveled on the edge next to the escapement wheel, and is
pressed toward the escapement wheel by the spring S'. The elbowed
arm j projects from the collar d and has the part which projects across
the path of the pin also beveled or so shaped that a transverse section
thereof is wedge formed. During the usual action of the machine the 3
piu pushing against the arm ; compresses the spring 87 which is
attached to the arm ; at one end, and is fixed to a stationary part at the
other. When the escapement wheel W has so far rotated that it has
presented, say, a dot on the typo wheel nearly to the printing pad, the
arm having been intentionally so located is brought into contact with 3
a projecting stop (see Figure 1, B,) which extends from the vertical
locking lever L' toward and across the path of the same. The continual

page_text: pressure of the actuating lever L, and the pawl' exerted through the
mechanisms provided, causes the slightly over balanced locking lever I'
to move slightly, and it does so at the proper time to cause the locking
hook (see Figure 1; B,) to engage the arm a which is rigidly attached
to the lever L. The lever L is thus held or locked so long as the
transmitter continues to run, and make and break circuit as rápidly as .
usual. Upon stopping to print the dot, however, the lever L lifts of
course. In so doing, the adjustable post n which is attached to the
printing lever, and has a beveled top, lifts and presents its beveled apex
to the collar'd, overcoming the pressure of the spring S' so as to cause
the sleeve thereof to slide on the shaft until the arm ¹ (see Figure 1, B,)
clears the pin when the compressed spring 8' taking the collar in
charge it is rotated until the arm ; strikes upon the opposite side of the
stop ½³ of the lever L. The pressure which locked the lever L being
thus removed, perhaps assisted by the blow of the arm j, the overbalance
thereof takes effect, and unlocks the lever L, thus permitting the
receiving machine or.. machines to start from the same point as tho
transmitter, the latter having been delayed to print at the proper
common starting point, viz., a dot. The same revolution, or according to
> the letter printed, part of a revolution is described every time printing is
allowed.
.
The operation of the sixth part of my Invention, which is for the trans-
mitting to the receiving instruments described, or to any other is as
follows, viz. :-As the pinion N revolves the rod is caused to slide by the
link . Starting from the situation shewn in Figure 1, D, the block J
being in contact with its corresponding block k is drawn from that
contact, and the circuit is thereby broken. Continuing motion of the
"pinion N causes the link to return the slide 1, and consequently the
block J into contact with the block k, thereby renewing the connection
and completing the circuit. Repetitions of these motions constitute the
means of control over the receiving instrument, arrangements' being
made for lost motion in the slot of the link without effect upon the
slide and the spring St. D causing the dog p to take in the toothed
wheel R, the crank C' cannot move backward far enough to cause the
5 pin in that slot to exceed the lost motion provided for, consequently no
involuntary disarrangement of the instrument can result from the causes:
referred to in this connection. -
I
"

page_text: Having now described and particularly set forth the nature of the
said Invention, and the manner of carrying the same into effect, I would
have it understood that what I claim is,-
1. The lever L provided with the two pallets p' engaging the pins of
an escapement wheel, such lever being operated by a magnet and 5
armature.
i
2. The ratchet wheel operating the escapement wheel of a telegraph
instrument by means of a spiral or a convolute spring in a state of
compression between them.
3. The lever L provided and operated as above, and also provided with 10
the pawl r operating the escapement wheel by means of a ratchet wheel
and compressed spring.
4. The dog p' operating to maintain the compression of the spring S
between the ratchet and the escapement, wheel W.
5. The pendent lever provided with the V shaped cam ² co-operating 15
with the Vehaped camo on the lever L, and also provided with the :
circuit closing pin i or other equivalent device.
6. The sliding latch provided with the lip e', and the pendent
lever provided with the ledge e operating, coordinately to close and
open the circuit of the printing magnet Mr.
7. The counterweight C and spring S operating upon the latch to
permit or break the connection of the printing circuit, as described.
8. The .counterweight operated by an impulse derived from the
printing lever L', substantially as shewn.
20
9. The lever L arranged and operating to complete the printing circuit 25,
through the screw stops g¹ and g³ or their equivalents.
10. The pointed feed bar E sliding in guides provided in the per-
pendicular slide d' operated by the link A' from the printing lever L' to
feed the slip of a printing telegraph.
11. The cork printing pad of a printing telegraph.
12. The overbalanced locking lever I provided with locking lip k and
the stop A, and operating to lock the escapement lever L.
13. The pin operating to carry the elbowed arm; of the collar d,
and to compress the spring St
30.

page_text: 14. The elbowed arm; operating upon the stop h¹ of the lever I for
the purpose of locking the levers L and I.
15. The same operating in conjunction with the pin and stop h¹ to
secure unison.
16. The bevel pointed pin n located on the printing lever and operating
upon the bevel-edged collar d to cause the elbowed arm ; to escape the
pin i* by sliding the same on the type wheel shaft.
17. The spring. S' receiving compression during the revolution of the
escapement wheel, and operating to return the elbowed arm ; to the
stop h³, and also to return the arm j into position to engage the pin i*.
18. The slotted link t, block J, spring 8', pawl p³, and toothed wheel B
in combination.
3
19. The adjustable block J on the slide 2 in combination with the
spring connection block k.
In witness whereof, I, the said William Morgan-Brown, have here-
unto set my hand and seal, this Tenth day of March in the year
of our Lord One thousand eight hundred and seventy-three.