US2216643A - Arrhythmic telewriter - Google Patents

Description

'Oct l; 1.940. l 2,216,643 JEAN EsTouP, ALsc KNowNAs HENRI EsrouP AnnuYTmlIc TELEwITzR Filed Juno 18, 1956 4 sinds-Sheet fwd'.

ocu 1. 1940.y ,y y 2,216,643' f y JEAN EsToUP, ALSO KNOWN As HENRI E STOUP A Anm-xY'rx-nuc femmina 'nua Junon. lags 4 sun-shuts v JEAN ESTOUP, ALSO KNOWN AS HENRI ESTUP ARRHYTHIIC TELEWRITER Filed June 18, 1936- 4 Sheets-Sheet 4 Patented Oct. 1, 1940 f UNITED STATES f ARRHYTHMIC TELEWRITER' Jean Estoup, also known as Henri Estoup, Montrouge, France Appneation June 1s, 1936, serial No. 85,969. i

In France June 19, 1935 17 Claims.

This invention relates to a new' telegraphic apparatus of the so-called arrhythmic type, emitting and receiving signals composed of '7 impulses in accordance vwith the international code,

5 writing either on a tape, or on a sheet of paper, by means of anr alphabetical keyboard similar to that of typewriters.

In the apparatus forming the subject-mattei' l of the present invention, the transmission is ef- 0 fcc-ted through the medium of an automatic sending key, the contacts of which are set in position by a Amechanism provided with 5 combs, actuated by the keys and the' currents of which are trans- 1 mitted to the line through the medium of contacts carried by a iirst plate in front of which move brushes which are started by depression of a key, the stoppage automatically taking place as'soon as the combination typed has been transmitted.

The. apparatus gives a contro-l translation of the letter emitted by means of a set of levers controlling a printing mechanism provided with type bars and similar to that of ordinary typewriters.

The reception is effected by means of a second plate opposite which move brushes which direct the local currents, arising from a relay fed by the line currents, on switching electromagnets similar to' those of Baudotap-paratus and which control thevtranslation mechanism in conditions identical to those of the translation controlling the transmission.

The apparatus, which is provided with all the mechanisms of an ordinary telewriter, is moreover .provided with a two-color ribbon mechanism, which'latter will be extremely useful on the telewriter-the apparatus writing in black all the signals received, and in red all thesignals emitted, for instance, the differentiation of the parts transmitted and of the parts received, which is essential, will thus be very visible and immediate; and, on apparatus writing on a sheet, itis provided with a return mechanism, lsimilar to those of ordinary typewriters, the manipulation of which will move both associated carriages aspace back and which will be indispensable on a machine on which the operator could up to now correct his errors only by writing XX and by beginning the wrong or faulty part over again, this compelling his correspondent to look for eventual errors and to. rectify them by hand.

. The motor actuating the mechanisms is started ry the depression of vany key, or by the reception of a start impulse; it is maintain-ed in operation by the transmission or reception of any signals and automatically stops'40 seconds after the transmission or reception of the last signal.

The emission ror reception of the figures combination moves all the rtype bars, secured on a sector, to 'gures,postion. The emission or 5 reception ofthe letters combination restores all the type bars to letters position.

The emission or reception, in fgures position, of the combination J actuates a call bell. The reception,'in 'gures position, of the combination D locks a device emitting` a call signal. f Y

In the receiving apparatus writing on av tape, the type strike upon the paper driven by a wheel the forward movementof which is caused by a pawl after each depression of a type bar key.

In the receivingapparatus writing on asheet, the paper is held, by 'a pressure device; on a roll or cylinder carried by a carriage lwhichl moves to the extent of one space after'eachdepression 20 of a type bar key bythe action of an escapement identical to those'of typewriters. l The striking or the combination return'iof the carriage causes'the engagement oa device which'brings back the paper to' thebegin'ning of the line. The 25 striking of the combination i between lines causes the paper to advance Vtc 'the extent of one line. The striking,4 in,'gures position, of' the combination F, moves the carriage back one sp-ace in ther same conditions as the "return mechanism of typewriters.

It is to lbenoted that the apparatus forming the subject-matter of the present patentutilises plates swept by brushes for the transmission and reception, preferably to'any other' device, such as contacts operated by cams, etc., the said mechanism` giving the possibility of utilising at the reception shortened contacts, at lthe transmission and at 'the receptioncoritacts for discharging the line, in all cases contacts of rigorously determined duration, and of'a receiving relay allowing to operate on'theline with currents'of very-` small intensity; 'the combination of these devices ensures satisfactory `reoep't'ion's'on lines either very long, or of great capacity, and, all the more, on short l linesof small capacity. l

It isv also to be noted that'the control translation is effected mechanically, without `the intervention of any'electric device, this allowing Ato further improve the telegraphic 'qualities of the apparatus by avoiding the operation in series or in parallel of two relays, one at each end of the line,]fand to give tothe control translation a fixed.' and extremely'lsh'ort duration, of the order 55 of 8 hundredths ci a second, after the depression of each key, so that the typist has not the extremely disagreeable sensation of typing out of time when the control translation is effected by the apparatus, as this is usually done on actual telewriters, 15 to 25 hundredths of a second after depression of the key.

It is also to be noted that each of the apparatus connected is, when its motor is operating and in the absence of any emission, in position for reception; it suiiices for any one of the two typists to depress a key in order that his apparatus should come in position fortransmission, the second one receiving the currents emitted without having any mechanism to manipulate for placing, previously to the typing, one of the apparatus in position for transmission and the other in position for reception. i

It is further to be noted that the time necessary for the transmission of a combination is of 15 hundredths of a second and the time necessary for its electric reception of 12 hundredths of a second, the diiference of 3 hundredths of a second provided being sucient for ensuring, on the one hand, the operation ofthe locking device of the receiving brushes and, on the other hand, the taking up of the differences of synchronism, ever important, between the two apparatus.

It is finally to be noted that the switching electromagnets have to exert, as those of Baudot apparatus, only an extremely small mechanical effort, so that they are very positive in operation.

The invention will be clearly understood from the complementary description given hereinafter and from-the accompanying drawings, which are of a diagrammatic nature and given particularly by way of example. In these drawings:

Fig. l is a diagram of the electric circuits of the apparatus.

Fig. 2 shows the connections for starting and stopping the motor actuating the mechanisms.

Figs. 3 and 4 illustrate the mechanism for selecting, transmitting and translating the signals manipulated, as Well as the mechanism for translating the signals received.

Fig. 5 illustrates the locking device for the cams and transmission brushes.

Fig. 6 shows the locking device for the receiving brushes.

Fig. 7 illustrates the escapement control for the carriage.

Fig. 8 shows the carriage return mechanism.

Fig. 9 illustrates the line spacing mechanism.

OPERATION or THE APPARAros-Electric circuits.-The drawings show the electric circuits of the apparatus arranged for operating with double current.

The apparatus essentially comprises a transmitting plate I, a receiving plate 2, an automatic sending key 3, a relay 4, a starting electromagnet 5, a series of 5 switching electromagnets 6a to 5e, and a local supply device 1.

At rest, the brushes 8 and 9 give the line to the receiving relay 4, the line current holding the armature oiv the relay on the rest position. The receiving brushes II give the local positive current tothe starting electromagnet 5, but the starting circuit is held open by the rest current'.

When a key is depressedfthe beginning of the stroke has for effect to place, through a mechanism described later on, the contacts of the automatic sending key 3v in the required position. For typing `the combination A, shown on the drawings,.the contact Ial is connected to the positive pole, as well as the contact Ib, and the contacts Ic, Id and Ie are connected to the negative pole.

The end of the displacement of the key causes, through a mechanism described later on, the locking of the shaft carrying the transmitting brushes. The brushes 8 and 9 are driven by the mechanism at a constant speed of 200 revolutions per minute.

The brush 9 reaching the point I2 puts in communication, through the medium of the contact I3 and resistance I4, the relay 4 with the positive local current, thus holding the armature on the rest position during the entire emission and preventing a false starting of the receiving brushes.

When the brush 8 reaches contact I5, it puts the line in relation with the negative pole, giving the starting impulse, then with the contacts of the automatic sending key 3, transmitting the required combination, finally, through contact I6, with the positive pole, giving the stop impulse. The shaft of the transmitting brushes stops after having effected half a revolution when the brushes have reached the rest position, brush 8 taking the place of brush 9, and vice versa. Each of the brushes has thus alternately for function to transmit, and to hold the receiving relay stationary.

When the apparatus, in rest position, receives a negative starting impulse, the armature of the relay moves, supplying local current to the starting electromagnet 5 which, through a locking device described later on, causes the receiving brushes II to start for effecting one revolution, at the constant speed of 500 revolutions per minute. The receiving crown has 6 useful contacts and 5 insulated contacts, the line currents are received on shortened contacts as on Baudot apparatus. Each useful contact is therefore reached, as will be shown by a simple calculation, 2 hundredths of a second after the preceding one, this ensuring the synchronism between the two apparatus.

The brushes reaching contact 2a transmit, if, at this moment, the relay receives a positive impulse, the local current to the electromagnet 6a, and nothing if it receives a negative impulse. The releasing device it controls operates therefore if th-e impulse a received by the relay is positive, and it remains stationary if this impulse is negative.

The electromagnets Ii-b, 6c, 6d and 5e are likewise supplied with current if when the brushes pass in front of their respective contacts, the relay receives a positive impulse, and said electromagnets remain at rest if the relay receives a negative impulse.

When passing opposite the rest position, a device described later on restores the brush I I to rest.

In order to provide the time necessary for starting the brushes, which time is variable according to the adjustment of the starting device, the receiving sector can be moved about the shaft I 'I for setting it as with Baudot apparatus. The setting will be effected by local current.

The apparatus can also be arranged for operating with simple current supplied by a central battery, the interruptions of passage of the current taking the place of the negative impulses. The relay is so adjusted as to be held at rest by the positive permanent line current for which the positive local current is substituted during the transmission.

l fl

Starting and automatic stopping of the motor.-The motor I8 is connected to the mains through the medium of a mercury switch I9 secured on a plate 2|), and a disc lightly rubbing against said plate tends to cause it to rock, under the action of the movement of the motor and through the medium of a suitable gearing down device, in a clockwise direction. In the absence of any emission, disconnection takes place in 40 seconds.

Tne plate 20 is restored to working position Vby the starting eleotromagnet 2l connected to the mains through the medium of two contacts 22 and 23 respectively held open, as described later i on, by the lever for starting the receiving brushes and by the lever used for locking the transmission cams.

If a key is depressed, the contact 23 is. closed, thus closing, for half a revolution of the transmission brushes the circuit of thestarting electro-magnet 2l. The motor starts and each depression of a key restores the switch to working position. If the apparatus receives a negative impulse, the relay supplying local current to the starting electromagnet `5, releases the lever starting the receiving brushes, thus causing the closing oi contact 22 for one revolution of the brushes and, consequently, the starting of the motor. The reception proceeding, the switch is restored by each depression of a. key to working position.

Transmittzng mechanism and control translation-f it is assumed that the motor of the apparatus is operating and that the operator desires to write the letter A, by depressing the key 2G, he causes the key lever 25 to rock about the pivot pin 2t. The letter A includes, besides the negative start emission and the positive stop emission, two vpositive emissions followed by three negative emissions.

The selecting comb 21a carries, at its lower part, inclined projections facing th-e key levers controlling a positive a impulse, and a gap facing 'the key levers controlling a negative a impulse. Likewise, the combs 21o, 21o, 21d, 21e are moved towards the right when the corresponding impulse is positive, and they remain in position when it is a negative impulse.

The depression of the key A vtherefore causes the displacement, towards the right, of the combs 21o and 21o, which push the corresponding transmitting levers 28a. and l281), these latter, rocking about the pivot pin 29, strike against the armature of the electromagnets 30a and 30D.

The armature of the electromagnets 30a and 323D, when it rocks, releases the corresponding switches .3|a and 3lb. The latter, under the action of their springs 32a and 32h, fall and face the .points .33 of the corresponding rocking levers 34a. and 3th.

Thus, when, the key lever is at 2 millimeters from the end of its displacement, the combination A is recorded in the switches 3|, the switches which have fallen lrepresenting a positive impulse, and the switches have remained in position, a negative impulse.

The depression of the key continuing, the universal bar 35, pushed by the key lever 25, comes in engagement with the lever locking the transmission shaft 36 which causes, as described later on, the locking of the shaft carrying the brushes and the transmitting cams.

When the sleeve Iof the transmitting cams 31 starts, the switching cam pushes the transmission lever 33, which causes the lever 39 to rock about the pivot pin 4|, said lever 39 carrying a pin 40 on which are secured the rocking levers 34. This movement has for effect to project the entire set of rocking levers 34 towards the switches 3|. Those of said rocking levers 34 which engage with a raised switch rock in a lcounterclockwise direction, moving the corresponding controller comb 42 from right to left; those which engage with a fallen switch rockin a clockwise direction, moving the corresponding controller comb 42 from left to right.

Each of the controller combs is held in the position where it has been pushed back by a roller 43 pressed 'by a spring 44. It moves the Contact 45 towards one or the other of the abutments 46, connected to the positive pole, or 41 connected to the negative pole. The set of contacts constitutes the automatic sending key.

' The ycombination typed is therefora'immediately after starting the transmitting cams, recorded, on the one hand, in the automatic sending key and, on the other hand, in the controller constituted by the set of controller combs.

The controller combs 42 are provided, at their upper part, with a series of notches so made that the comb presents a gap to all the selecting levers 48 the combination of which corresponds to the position ,given to the corn-b 42, and a solid portion to all those the combination of which does not correspond` to this position.

The rotation of the transmitting shaft continuing, the emission is effected, as above stated, by the transmitting plate. At the same time, the .apparatus gives the control translation by means of the following mechanism: Y v

The selecting levers 48 are constantly urged to fall by their own weight and by the spring 49. They are held in raised position. by the plate'l of the universal bar on which they bear through the medium of a roller 52. Thetransmitting shaft drives a striking cam which, through Va set of levers (not shown), causes the universal bar .5| to rock in a counterclockwise direction. ,During the first portion of the displacement, the plateli lowers, allowing all the .Y

selectingv levers. 48 tofall. As a solid portionrof a controller comb 42 is suiiicient for stopping each lever, they will all be stopped, except the lever A, the combination of which has been .stored in the combs 42.

When the lever A falls, the plate 5i! comes in engagement with the same and pushes it from right to left, determining the depressing movement of the type bar 53 by means-of a set of levers. The other selecting levers, which have remained lifted, are not engaged by the universal vbar 5|.

YUpon return movement of the universal bar 5 I the plate 5D lifts, from the beginning of its displacement, the roller 52 and the .selecting lever 4.8, giving to the striking levers the time necessary for returning to rest, without said levers hindering the movements of the controller combs 4.2 for recording andtyping a new combination. t.

" The sleeve of the transmitting cams ycarriesa so-called locking cam which, by means `of a series of levers (not shown) acts on the universal bar 35. The .locking cam carries a projection which, after one hundredth of a second, .strikes :upon the universal bar, giving to the typist the tactile order to raise `the finger. yThe touch of the machine vwill thus approximate that of type- Writers.' Ten hundredths of a second after the lbeginning of the transmission, the locking cam completely lifts the universal bar 35 and, consequently, the whole of the keys.

Under protection of this locking of the key levers, a so-called switch returning cam pulls towards the left a link 54, which causes the bent lever 55 to rock about a pivot pin 56. 'I'he lever 55 is held by a returning spring 51. By rocking, said lever 55 raises, by means of a rod 58 it carries, all the switches which have fallen and restores them to theposition of rest, where they are held by the armature of the corresponding switching electromagnet.

The apparatus is thus ready for a new typing operation and for transmitting the corresponding combination.

The auxiliary comb 59 carries a projection which, bearing on a roller, holds it in the position where it has been left by the last movement imparted thereto. It is pushed back towards the left by the letters key, and to the right by the figures key, or reversely.

It locks in letters position the 1, 2, 3, 4, 5, 6, 7, 8, 9, Zero, call signal, carriage return and bell keys, and in figures position the Q, W, E, R, T, Y, U, I, O, P, D, F and J keys.

The auxiliary comb 66 carries two inclines operated by the figures and letters selecting levers in conditions similar to the auxiliary comb 59. It prevents, in figures position, levers D, F and J from falling, and, in letters position it prevents the fall of the levers controlling the call signal emitting, carriage return, and bell movements.

Engagement for transmission- The transmission shaft 6| carries a notched sleeve 62. Said shaft 6| drives a toothed sleeve 63 which, sliding with slight friction on a square portion of the sleeve 62, can come in engagement with a toothed sleeve 65, rigid with a gear wheel 64, loosely rotatingabout shaft 6| at a constant speed of 200 revolutions per minute.

The sleeve 62 is provided with two diametrally opposed notches into which enter, in position of rest, a roller 66 carried by a lever 61, which can come in engagement with the universal ba-r 35 of the key levers 25. The lever 61, restored by a spring 68, pivots about the pivot pin 69. It drives, through a roller 16, the sleeve 63.

When the universal bar 35, at the end of its displacement, pushes the lever 61, it causes it to rock about its pivot pin 69. The roller 66, withdrawing from the notch of the sleeve 62 in which it extends, releases the latter. At the same time, it drives, through the roller 16, the sleeve 63 which comes in engagement with the sleeve 65.

Immediately after this engagement has been effected it is maintained by the roller 66 bearing on the sleeve 62, until the roller 66 enters a notch, this occurring after half a revolution. At this moment, the lever 61, under the action of its returning spring 68, moves the two rollers 66 and 10 from left to right, causing the disengagement and immobilisation of the transmission shaft in a rigorously denite position.

In engaged position, the lever 61 presses, by its end 1 I, on a contact blade 12, thus establishing a starting contact which is maintained during all the time the engagement lasts, that is to say during half a revolution of the brushes at Ieach transmission.

Reception- The receiving brushes (not shown) are rigidly secured on` a shaft 13, which can be driven by a fork 14 carrying a roller 15 and a member 16. The fork 14 can pivot about a fictitious axis constituted by two diametrally opposed pivots 11 and 18 secured on a sleeve fast on the shaft 13. A toothed wheel 19, carrying a toothed sleeve 80, loosely rotates on the shaft 13.

At rest, the roller 15 rests` at the bottom of a notch provided in a fixed sleeve 8|. Said roller 15 is held at the bottom of the notch by the pressure of a roller 82 carried by a lever 83 which can rock about a pivot 84 carried by a lever 85 held in position of rest by the armature of a starting electromagnet 86. A spring 81 holds the roller 15 at the bottom of its notch. A spring 88 lconstantly restores the lever 85.

When the relay receives a negative impulse, its armature, by moving, sends a local current in the startingelecromagnet 86, the attracted armature of which releases the lever 85, moving the roller 15 from left to right.

The fork 14 rocks about its pivots 11 and 18 and the toothed part 16 meshes with the teeth of the sleeve 80, causingthe starting of shaft 13. When the engagement is effected, it is maintained by the roller 15 bearing on the sleeve 8|.

After three-quarters of a revolution, the roller 15 pushes back a roller 89 carried by a lever 99 which rocks, causing the engagement, for one revolution of the shaft, `of the receiving cams with a toothed wheel loosely rotating about said shaft at a constant speed of 500 revolutions per minute, by a device similar to the engaging device (Fig. 5) of the transmission shaft 6|.

At the end of its revolution, the roller 15 engages with a boss 9| formed on the lever 85. The latter, being pushed back, rocks about its pivot pin 92, allowing the return of the armature ofthe starting electromagnet 86, which arma.- ture prevents the return of the lever 85. The roller 15 the-n engages with the roller 82 which, under the pull of the spring 81, rapidly pushes it back to the bottom of the notch formed in the Xed sleeve 8|, thus causing sudden stoppage, in a rigorously definite position, of the shaft carrying the receiving brushes.

At rest, the boss 93 provided o-n the lever 85 presses upon a contact 94 connected to the electromagn-et used for starting the motor. When the lever 85, under the action of the negative start impulse, rocks, a contact 94 is closed for one revolution of the receiving brushes, thus moving, as above stated, the mercury switch |9 to working position.

The translation of the signal received is effected in conditions very similar to the control translation.

The positive currents received by the relay give rise to the generation of local impulses directed by the contacts of the receiving plate on the switching electromagnets. 'Ihe combination thus recorded is stored by the controller combs, and then translated. 'I'he switches are restored to rest immediately after the switching of the controller combs by series of levers operated by the receiving cams in a manner similar to the control translation.

Call signal emitter.-When the apparatus receives the combination call signal, a set of levers (not shown) causes the engagement of the clutch similar to that of the trans-mission shaft which drives a shaft 95 at the constant speed of one revolution in 3.3 seconds. Fingers 96, secured on the shaft 95, successively come in engagement with projections 91 carried by corresponding lever's 98, which automatically manipulate the emission of the call signal.

For preventing the demand for a call signal from causing false engagement of the emitter of the demanding station, the levers are so arranged that'the engagement can take place only if the transmission shaft is in position of rest. Change of figures and lettera-The change of letters and .change of figures levers respectively move, through a mechanism similar to that well known in typewriters, the type barcarrying segment to such a position that it prints either in letters, or in figures.

Translation on a sheet- The paper is clamped on a r'oll or cylinder carried by a carriage similar to those of typewriters. The carriage is subjected to the constant pull of a barrel spring 99 which tends to constantlydrive in the direction for writing.

The advance to the extent of one space after each typing of a letter or gure is obtained by an escapement similar to those of typewriters and operated by the universal bar The movement of the universal bar 5| is transmitted to the escapement by a lever |0|, pushed by a member |02 pivoting about a pivot pin |03 carried by the universal bar 5|. At rest, the transmission of the movement is ensured by the member |02 bearingon a lever |04 rocking about a pivot pin |05 carried by the universal bar 5|. The lever |04 is constantly pulled by a spring |06. It pushes back in a counterclockwise direction an auxiliary bar |01, which rotates with slight friction about the pivot pin |08 o-f the universal bar 5|. y If it is assumed that the controller combs allow the fall of a lever |09 actuating a type bar, the spring |06 holds the members |04 and 5| intheir respective positions, and the lever |02, being supported by the lever |04, actuates the lever |0| which causes the block |00 to rock, determining the escapement. v

All the selecting levers determining movements, change of letters, change of figures, return of the carriage, line spacing, back spacing, ringing of the bell, emission of call signal, are grouped to the left in front of the auxiliary bar |01. v

If it is assumed that the controller combs f allow the fall' of a lever ||0 actuating a mechanism, the bar 5|, during the rst portion of its movement, will push the auxiliary bar |01 against the selected lever. The bar |01, rocking about the pivot pin |08, actuates the lever |04 which, rocking about the pivot pin |05, will move and come opposite the notch provided in member |02.. The latter, being no longer supported by the lever |04, rocks in space and the remainder of `the movement of the universal bar actuates the mechanism without causing escapement. y

Return of the carriage.-ll1e shaft driven at a constant speed by a suitable set of gears, carries at its end a square .portion on which slides with slight friction the male cone ||2 of a clutch, the female cone ||3 of which actuates a pinion ||4 meshing with `a rack ||5 carried by the carriage.

When Athe carriage return combination is transmitted or received, the selecting lever IIB transmits its movement, through a set of suitable levers, to a disengaging pawl ||1. The latter, when rocking, releasesA a lever ||8 which, being subjected to the pull of a spring I9, moves the cone ||2 upwardly. The engagement is effected and the carriage is returned at a constant speed. n c When the carriage has reached the graduationfrO, la finger |20 abuts against a finger |2| carried by the lever I8. The latter is actuated,

and, on the other hand, the return of theA disengaging pawl ||1, which locks the lever ||8 and prevents a new engagement as long as the apparatus has not received a new' carriage return signal.

Line spacing-The selecting lever |22 actuates, through a suitable transmissionl a bar |23 which rocks about its pivot pin |24. The bar |23, pushing a roller |25, causes a lever |26 to rock about its pivot pin |21 whatever may be the position of the carriag-e. A pawl |28, carried by the lever |20, actuates a ratchet |29, causing the paper to advance to the extent of one line. T'he regularity of line spacing is ensured by a roller |30 carried by a powerful spring 3| and which permanently engages with the teeth of the ratchet |29.

Back spacing-As stated, the apparatus is provided with a back spacing mechanism similar to those of ordinary typewriters and operated by the corresponding selecting lever by means of a suitable set of levers.

Translation. on a tapa-The tape is driven by a roller so arranged as to leave the writing constantly visible. It moves forward under the action of the universal striking bar in the same conditions as the escapement is produced for the translation on a carriage, by means of a ratchet driven by a pawl and held by a roller pressed by a spring.

Two-color ribbon mechanism-As stated,A the apparatus Writes by means of a two-color ribbon. At rest, the ribbon-carrying fork is low'- ered, leaving the writing entirely visible. starting of the receiving cams lifts the ribbon to such yan extent that it writes in black; the starting of the transmitting cams lifts the ribbon to such an' extent that it writes in red, for

instance.

' The invention is not limited in any way to the form 0f construction described above and illustrated, and modifications can be made thereto without departing thereby fromv the scope of said invention.

What I claim .as my invention and desire to secure by Letters Patent is:

1. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by anzoperator, la selecting mechanism combined with the keys of said keyboard determining the polarities of the impulses to be transmitted when a key is depressed, a mechanism effecting the transmission to a distance of a predetermined combination according to the condition of members controlling the polarities of the impulses when a keyof said keyboard is actuated and a mechanism effecting the translation of a predetermined combination according to the condition of controller members, characterised by the f-act that said. members controlling the transmission polarities and said translation controller members are permanently combined and generally independent of said selecting mechanism yactuated by the keys of said keyboard.

" 2. Tfelegralphic apparatus of the start-stop type comprising in combination al keyboard having keys acted upon by an operator, a selecting mechanism combined with the keys of said keyboard determining the polarities of the impulses to be transmitted when la key is depressed, a mechanism effecting the transmission to a dis- The` tance of a predetermined combination according to the condition of members controlling the polarities of the impulses When a key of said keyboard is actuated, a mechanism eifecting the translation of a predetermined combination according to the condition of controller members permanently combined with said members controlling the transmission polarities and generally independent of said selecting mechanism actuated by the keys of said keyboard and a mechanism actuated by said transmission mechanism placing in position said members controlling the transmission polarities permanently combined With said translation controller members according to: the condition of said selecting mechanism combined with the keys of said keyboard during the transmission of the start impulse when a key of said keyboard is actuated.

3. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by an operator, a selecting mechanism combined with the keys of said keyboard determining the polarities of the impulses to be transmitted when a key is depressed, a mechanism effecting the transmission to a distance of a predetermined combination according to the condition of members controlling the polarities of the impulses when a key of said keyboard is actuated, a mechanism effecting the translation of a predetermined combination according to the condition of controller members permanently combined with said members controlling the transmission polarities and generally independent of said selecting mechanism actuated by the keys of said keyboard, a mechanism actuated by said transmission mechanism placing in position said members controlling the transmission` polarities permanently combined with said translation contro-ller members according to the condition of said selecting mechanism combined With the keys of said keyboard during the transmission of the start impulse and a translation mechanism eiecting the translation of said combination according to the condition of said translation controller members permanently combined with said members controlling the transmission polarities during the transmission of the Work impulses of said combination when a key of said keyboard is actuated.

4. Telegraphic apparatusv of the start-stop type comprising in combination a keyboard having keys acted upon by an operator, a selecting mechanism actuated by the keys of said keyboard, a mechanism veffecting the transmission to a distance of a predetermined combination When a key of said keyboard is actuated, a translation mechanism having printing means operably associated therewith, a controller translation device controlling said translation mechanism, means for effecting the control of the printing means of said translation mechanism corresponding to the depressed key of said keyboard during the transmission of the Working impulses of said combination, a device rigid With the controller translation device for effecting the transmission of the combination corresponding to the depressed key, a rotary receiving mechanism capable of being actuated by the current impulses received and an impulse recording mechanism placed in position by said selecting mechanism When a key is depressed.

5. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by an operator, a selecting mechanism actuated by the keys of said keyboard, a mechanism effecting the transmission to a distance of a predetermined combination When a key of said keyboard is actuated, a translation mechanism having type printing Ameans associated therewith, a controller translation device controlling said translation mechanism, means for eiecting the control printing of the type of said translation mechanism corresponding to the depressed key of said keyboard during the transmission of the working impulses of said combination, a device rigid with the controller translation device for effecting the transmission of the combination corresponding to the depressed key, a rotary receiving mechanism capable of being actuated by the current impulses received and an impulse recording mechanism placed in position by said selecting mechanism when a key is depressed, at the very instant it is struck and by said rotary receiving mechanism in proportion as the Working impulses are rece-ived, upon reception of a combination.

6. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by an operator, a selecting mechanism actuated by the keys of said keyboard, a mechanism effecting the transmission to a distance oi a predetermined combination when a key of said keyboard is actuated, a translation mechanism having type printing means, a controller translation device controlling said translation mechanism, means for eifecting the control printing of the type of said translation mechanism corresponding to the depressed key of said keyboard during the transmission of the working impulses of said combination, a device rigid with the controller translation device for effecting the transmission of the combination corresponding to the depressed key, a rotary receiving mechanism capa-ble of being actuated by the current impulses received, an impulse recording mechanism placed in position by said selecting mechanism when a key is depressed, at the very instant it is struck, and by said rotary receiving mechanism in proportion as the Working impulses are received upon reception of a combination, and 4a mechanism for placing in position said transmission control device rigid with the controller translation device during the transmission of lthe start impulse according to the position occupied at this moment by said impulse recording' mechanism when a key of said keyboard is actuated.

7 Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by ,an operator, a selecting mechanism actuated by the keys of said keyboard, a mechanism effecting the transmission to a'distance of a predetermined combination When a key of said keyboard is actuated, a translation mechanism having type printing means, 'a coni capable of being actuated by the current impulse received, an impulse recording mechanism placed in position by said selecting mechanism When a key is depressed, at the very instant it is struck, and by said rotary receiving mechanism-in proportion asv the Working impulses are received upon reception of a combination, and a mechanism for placing in position said transmission control device rigid with the controller translation device during the transmission of the start impulse according to the position occupied at this moment by said impulse recording mechanism When a key of said keyboard is actuated and during the reception of the stop impulse when a combination is received according to the position occupied at this moment by said impulse recording mechanism.

8. Telegraphic apparatus of the start-stop type comprisingVv in combination a keyboard having keys acted upon by the operator, a selecting mechanism actuated by the keys of said keyboard, a rotary transmission mechanism effecting the transmission to a distance of a predetermined combination when a key of said keyboard is actuated, a translation mechanism having printing means for effecting the translation controlling the impulses transmitted during the transmission of the Working impulses of said combination, a controller translation device controlling said translation mechanism, a transmission control device rigid with said controller translation device, a rotary receiving mechanism capable of being actuated by the current impulses received, a mechanism for placing in position said transmission control device during the transmission of the start impulse when a key ofV said keyboard is actuated and during the reception of the stop impulse when a combination is received, means connecting the receiving device to a linewhen said rotary transmission device is at rest, means connecting said line to said transmission device when said rotary transmission mechanism is set in motion and means combined with said rotary transmission mechanism for insulating said receiving device from the line during the rotation of said rotary transmission mechanism.

9. Telegraphic apparatus of the start-stop type as defined in claim 8, in Which said transmission control device comprises transmission contacts which are rigid with combs provided on the controller translation device.

10. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by the operator, a rotary mechanism effecting the transmission to a distance of a predetermined combination when a key of said keyboard is depressed, a translation mechanism comprising straight controller combs rigid with transmission contacts and provided With notches and projections in a predetermined order for eiecting the translation controlling the combination transmitted during the transmission of the Working impulses of said combination, selecting levers capable of falling in said notches when an alignment of five notches has been obtained or of being retained by said projections When said alignment is not obtained, levers carrying type and capable of striking the paper at a single point, a ribbon Which is interposed, at the very instant of the striking, between the type and the paper for ensuring the printing, a universal bar holding said selecting levers lifted When at rest and capable of abandoning them when it is actuated, the selecting lever which iinds an alignment of five notches falling and being pushed by said universal bar in such a manner as to eiect the printing of the type combined with said lever, and a mechanism-for causing said universal bar to act during the transmission of the Working impulses of said combination.

11. Telegraphic apparatus of the start-stop type comprising in comb-ination a keyboard having keys acted upon by the operator, selecting levers capable of being actuated by the keys of said keyboard, a rotary mechanism effecting the transmission to a distance of a predetermined combination when a key of said keyboard is actuated, a translation mechanism having printing vmeans for effecting the translation controlling the combinationl transmitted during the transmission of the Working impulses of said combination, a controller translation device controlling said translation mechanism, a transmission control device rigid With the controller translation device, a rotary receiving mechanism, a set of needles held in a position of rest by armatures of electromagnets and means combined With said selecting levers for releasing a sub-set of said needles when a'key is actuated.

12. Telegraphicl apparatus of the start-stop type comprising in combination a' keyboard having keys actedupon by the operator, selecting levers capable of being actuated by the keys of said keyboard, a rotary mechanism effecting the transmission to a distance of a predetermined combination when a key is actuated, a translation mechanism having printing means for effecting the translation controlling the combination transmitted during thetransmission of the Workingimpulses of said combination, a controller translation device controlling said translation mechanism, a transmission control device rigid With the controller translation device, a rotary receiving mechanism, a lset of needles held Y in position of rest by armatures o-f electromagnets andmeans combined with said rotary receiving mechanism for releasing a sub-set of said needles When a combination is received.

13. Telegraphic apparatus of the start-stop 1731136, comprising in combination a keyboard having keys acted upon by the operator, selecting levers capable of being actuated by the keys of said keyboard, a rotary mechanism eiecting the transmission to a distance of a predetermined combination when a key of said keyboard is actuated, a translation mechanism having printing means for eiecting the translation controlling the combination transmitted during the transmission of the Working impulses of said combination, a controller translation device comprising controller translation combs and controlling said translation mechanism, transmission contacts rigid With the controller translation combs, a set of needles held in a position of rest by armatures of electromagnet's and capable of being released by means combined with said keyboard when a kei7 is actuated, a set of rocking levers combined with? said controller translation combs, and means combined with said rotary transmission mechanism for placing in position said controller translation combs rigid with said transmission contacts according to the position occupied by said needles during the transmission of the start impulse of a combination when a key of said keyboard has been depressed.

14. Telegraphic apparatus of the start-stop type, comprising in combination a keyboard having keys acted upon by the operator, selecting levers capable of being actuated by the keys of said keyboard, a rotary mechanism effecting the transmission to a distance of a predetermined combination when a key of said keyboard isv actuated, a translation mechanism having printing means for effecting the translation controlling the combination transmitted during the lili) transmission of the Working impulses of said combination, a controller translation device comprising controller translation combs and controlling said translation mechanism, transmission contacts rigid with the controller; translation combs, a set of needles held in a position of rest by armatures of electromagnets and capable of being released by means combined With said keyboard when a key is actuated, a set of rocking levers combined with said controller translation combs, means combined With said transmission contacts for placing in position said controller translation combs according to the position occupied by said needles during the transmission of the start impulse of a combination when a key of said keyboard has been depressed, and means combined with said rotary transmission mechanism for restoring to rest position said needles at the end of the revolution of said transmission mechanism.

l5. Telegraphic apparatus of the start-stop type, comprising in combination a keyboard having keys acted upon by the operator, selecting levers capable of being actuated by the keys of said keyboard, a rotary mechanism effecting the transmission to a distance .of a predetermined combination when a key is actuated, a translation mechanism having printing means for effecting the translation controlling the combination transmitted during the transmission of the Working impulses of said combination, acontroller translation device which comprises controller translation combs receiving impulses, a transmission control device rigid With said controller translation device, a rotary receiving mechanism, a set of needles held in a position of rest by armatures of electromagnets, means combined with said rotary receiving mechanism for releasing a sub-set of said needles when a combination is received, transmission contacts rigid With the controller translation combs and means combined with said receiving mechanism for placing in position said controller translation combs according to the position occupied by said needles during the reception of the stop impulse when a combination is received.

16. Telegraphic apparatus of the start-stop type, comprising in combination a keyboard having keys acted upon by the operator, a mechanism eiecting the transmission to a distance of a predetermined combination when a key has been depressed, a translation mechanism having printing means for eiecting the translation control-l ling the combination transmitted during the transmission of the Working impulses of said combination, a set of needles held in rest position by armatures of electromagnets capable of being released when a key is actuated and restored to rest position by means combined with said transmission mechanism before the end of its revolution and means combined with said transmission mechanism for restoring all the keys to their lifted position before the end of the revolution of said transmission mechanism.

1'7. Telegraphic apparatus of the start-stop type comprising in combination a keyboard having keys acted upon by the operator, a mechanisrn eiecting the transmission to a distance of a predetermined combination when a key of said keyboard is actuated, a translation mechanism having means for printing on a sheet of paper for effecting the translation controlling the combination transmitted during the transmission of the working impulses of said combination, a receiving mechanism actuated by a combination coming from the line, means for moving the printing point in the direction of advance for writing after each type translation and a mechanism actuated by the translation mechanism upon translation of a predetermined combination for moving the printing point backward to the extent corresponding to a type space.

JEAN ESTOUP. Also known as Henri Estoup.

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