US1713003A - Automatic printing telegraph - Google Patents

Description

May 14, 1929; R. E. M. PENOT AUTOMATIC PRINTING TELEGRAPH 5 Sheets-Sheet 1 Filed Dec. 5, 1923' Inyenf'or Rob Hi'mi/e Mana e/15 JOGI" 14, 1929. R. E. M. PENOT AUTOIATIC PRINTING TELEGRAPH 'R. E. M. PENOT AUTOMATIC PRINTING museum;

Filed Dec. 5, 1923 5 Sheets-Sheet 4 May 14, 1929. 'R. E. M. PENOT AUTOIATIC PRINTING TELEGRAPH Filed Dec. 5, 1923 5 Sheets-Sheet 5 Patented May 14, 1929.

I I wi t-fr WATENT OFFICE.

ROBERT EMILE MARIE PENOT, or LA SAULAIE PRES 3m LE CHATEAU, FRANCE.

.AUTOMATIC PRINTING: TELEGRAPH.

7 Application filed December 5, 1923, Serial No. 678,646, and in France lleeember 14, 1922.

Tllheinvention relates to apparatus for au tomatically recording electrical signals in ty 'ieprinted characters of the type which comprises a regulator sorting the signals according to their duration or nature, a distributor translating the signals into letters, and an apparatus for recording the translated signals- In the case of Morse signals and the like, for example, the regulator sorts the dots From the dashes.

It has already been proposed to provide recording apparatus in which the estimation of the length of the signals or spaces is eli'ect-- ed by means of a sort of cmitactor or vi,- lna-tor the period of. vibration o't which is very small relatively to the length or the sig nal or space to be estimated the contactor being further combined with a number oil? relays to actuate a commutator for the letters. The latter apparatus is formed by means of electro-magnets into a certain number so as to be able to form all (If. the possible combinations oli signals.

The apparatus of the present invention is diii'ercntiated from those previously known in that the members are considerably simpliiied.

To estimate thelength of the signals or the spaces between signals the apparatus of the present invention. comprises a mechanical regulator operated electrically by the impulses of received current a distributor analogous to the known commutator tor the let tcrs but with the advantage of utilizing only a minimum number of electronlagncts, the said distributor comprising several groups of oscillating members each group consisting of two such members each actuated by a corresponding electro-magnet energized by currents trom the regulator, such cru'rents for one clectro-magnet correspolul-ing to dot re ceived impulses and for the other electromagnet to dash received impulses and a type writing machine associated with the distributor with its characters arranged circu larly and operated under the control oil circults closed by the distributor.

This apparatusis such that it allows the translation and recording of hlorsc or the like signals atall speeds more especially for wireless telegraphy. but it is obvious that such apparatus can be arranged also for other line telegraphy and the transi'nission oi? orders.

The accompanying drawings represent one exan'iple showing the various parts il orming the apparatus. In. these drawings:

Figure 1 is adiagramnmtic drawingot the regulator.

Figure 2 is a side view partly in section of the distribute r.

Figure 8 is a view partly in plan and partly in transverse section oil the distributor.

The two extremities oi? this '[igurc are two plan. views of the under part of the distributor the upper part being assumed to have been ren'ioved; while the central part is a transversesection oil an elenmnt oil? the dis trilnitor on theline il..--li oi Fig. 2.

Figure la diagrammatic drawing of theconnections of the distrilurtor. and i t Figure 5 a diagrammatic drawing oi the electrically driven tymewriter.

The regulator is constituted by the Following elements:

An electric motor l, coupled to a spindle X X. which carries a roller 2;

An anchored piece it pi voted at l and terminating in a pallet 53 situated in the magnetic field of two .electric-magnets (i and. 7 which cause the roller 2, when there is an interval between signals, to enter into frictional cngagenient with a dish 5t, and at each signal with a disk 9;

A relay '1 (l actuated by the device receiving the signals connected with terminals ll :1 nd controlling the electric-magnets (l and 7;

A. disc 8 turning with the shajit Y Y, on which it is mounted and constantly rctnrm-d by a spiral spring l). to its initial. position by means ot a projection li-l striking against a lined spur It turned in the reverse direction by the tliriction ot the roller 9., when the projection 18 is returned against a stop let and is there locked (in the position of rest) by means oi a pawl it having a return spring l? and operated by the anchor piece 2% which causes it to pivot about 19. The disc 8 involves in its movement two commutators 1t) and 20 mounted. on the shaft- Y Y. The cmnmutator 19 connected with the grouml wire of the apparatus co-mperates with two brushes 9i. and 22 and the commutator 20 also connected with the ground wire (vi-operates with a. singlcbrush 23.

' At ,eachinterval between the signals, disc 8 turns through an angle in proportion to the signal this collector turns at a period of friction of roller 2 and the angle is thus proportioned to the duration of the interval. Collector 19 closes the circuit by means of brushes 21 and 22 respectively on a terminal 24 for an interval of two letters (impression of the character selected and re lease of the distributor) and on terminal 25 for the interval between words (spacing). The collector 20, controls motor 1 whose circuit comprises in series a resistance 26 that may be shunted by a second resistance 27. This circuit is opened when the transmission is terminated.

' Disc 9 turns with shaft Z Z upon which it is mounted andis also returned by a spiral spring 28 to its initial position by means of a lug 29striking against a fixed spur 3 in the reverse direction, by the friction of roller 2, the displacement of disc 9 is limited by another stop 31. This disc carries with its movement two collectors 32 and 33 mounted on shaft Z Z. The collector cooper- .ites with two brushes 34 and 35 and the collector 33 with a single brush 36; these collectors have their conductive parts connected electrically. Disc 9 and therefore the collectors 32 and 33 turn with each signal at an angle in proportion to the time of friction of roller 2. For a short signal, collector32 is only displaced slightly and is connected by means of its brush 34. on terminal 37 (terminal for short signals) a current coming from-collectorr33; for a long greater angle and is connected by means of its brush 35 on terminal 38 (terminal for long signals) the current coming from collector An arrangement comprising a stop tooth 39, a collector 4:0 and clutch 41 the drivingplate of which is constantly driven by shalt X X. This arrangement is mounted on a hollow shaft 42 turning on shaft X X, and may be locked in two diametrical positions by the anchored piece 3 which has for its purpose at each of its extremities a stop-spur 43 on which the cam tooth 39 locks. At the beginning of each signal this entire arrangement is liberated by the anchored piece 3 and makes a half revolution; the collector 40 grounded by being connected with the metallic mass of the apparatus places by means of its brush 44, resistance 27 in shunt across the resistance 26 and thus increases the speed of the motor 1, the current passing from the terminal 47 through motor 1, resistance 27, brush 44, collector 40 to the ground and trom terminal 47, through motor 1, resistance 26, brush 23, collector 20 to the ground. The collectors 19 and 20, duringthis operation, have been rotated to bring their conducting parts into contact with their respective brushes, as Wlll be more fully set forth in describing the operation of the machine.

Once the signal is terminated this entire arrangement completes one revolution and the collector it) closes by means of its brush 45, on the collector 33, a. circuit connected by the collector 32 on the short signal terminal 37 or on the long signal terminal 33 according to the position of disc 9; the circuit passing from the distributor (Figs. 2 and 3) through terminal 37 (or 35), brush 34- (or 3.3), collector 33, brush 3(3, circuit breaker I 0, brush 4:5, and collector 40 to the ground.

A contact breaker 46 connected between collectors h) and 33 does not permit the passage between terminals 37 and 38 of any but limited current and of a constant value necessary to the regular functioning of the distributor.

The regulator thus constituted is supplied by an electric source the positive pole of which is connected with terminal 47 and the negative pole with the terminal -18 which is grounded on the metallic mass of the apparatus with the view of simplifying the connections. The collectors 40, 19 and 20, as has been previously indicated, are grounded in the same manner.

The distrilultor is essentially constituted of several groups of pivoting pieces having contacts that cooperate with fixed contacts and actuated successively by the regulator by means of electric-magnets so as to select the short and long signals.

Each group comprises two pivotal pieces correspomling respectively to the dots and dashes of the hzlorse alphabet. 'lhese pivotal pieces being alike it is sullicient to describe but one of them.

Each pivotal piece is formed essentially of a spindle -;t9 journaled in bearings 59. This spindle has tixcd upon it two plates :31 upon which are fixed perpendicular to the axis spring pallets 52 with contacts, which, when the spindle 49 turns, come into contact with the fixed contacts 52 connected with the circuits of the dill'crcnt letters. Certain of the contacts, as 5'2, 58, 59 and (it), operate in an inverse manner, being disposed for this purpose so as to be in contact with corresponding lixed contacts 53 when spindle i9 is in a position of rest while thcv open the circuits necessary during the oscillation of the said saindle 4-9. This oscillation of spindle l9 s obtained by means of an electric-magnet 5% receiving its current from the regulator by means of the short signal terminal 37 and the long signal terminal 38 which are respectively connected with terminals 55 and F6 of the rilistributor.

Several groups of turning spindles thus arranged and operated constitute the distributor. The number of these groups may vary according to ones needs. In the embodiment of invention illustrated as an example in the accompanying drawings there. are five groups.

The 'fii'st group comprises two spindles4l9 corresponding to the short and long signals which are designated, to avoidconiusion, by 49 (short) and 49 (long), or by using two forms of the Morse code, by 49 and 49 The electric magnets controlling these spindles may similarly be indicated by 54: (short) and 5+? (long) or by 54: and (-l- The second group is made up of the spindles 4:9" (short) and i9" (long) actuated by the electric magnet 54L" (short) and 54" long).

The third group is made up of the spindles 19 (short) and 49 (long) actuated by electric magnet 54 (short) and as (long).

The fourth, fifth, and other groups are also composed of similar elements that may be designated in a similar manner having as indices the letters e, d, i, etc.

A sixth 49 has a particular function: it is actuated by both. the short and the long signals, and permits the unbloching of the distributor when the transmission not well made. The typewriter mentioned later, therefore leaves blanks "for all letters that are illegible. This may occur for example when there an error of transmission or when static disturbs the relays.

When the spindles d9 of the first group are at rest, their respective contact-breaks 57, 58 and 59, (30 are closed. Similarly, when the spindles 49" of the second group are at rest, their respective contact-breaks 61., G2,

' (33 and (34,65, 66 are closed. Also the spindles l-S" oi? the third group, when at rest, close the contact-breaks 67, GS, 69 and 70, 71, 72, etc.

Each of the electric magnets 54h after having caused the corresponding spindles 4:9 to oscillate, automatically locks the said spindles in working position by means or an appropriate lock.

The distributor is returned to rest, after the transmission of each letter, by means of a contactbreak 73 actuated by an electric n'lagnet *i' l which unlocks from their working position the pivoting spindles that had served for the selection of signals. The electric magnet 7 i is put into circuit at the moment desired by the regulator, and, for this purpose, the terminal 75 of? the distributor con nected with terminal 24}; of the regulator which corresponds to the intervals between the letters.

Similarly terminal root the distributor is connected with terminal 25 of the regulator which corresponds to the intervals between the words (spacing).

And lastly the local source of the electric current is connected with terminals 77 (positive) and 781(11egative).

At the first signal received by the relay 10, the regulator sends to the first group oi. the distributor a current that passes through the electro-magnet 54L controlling the spindle of the signals corresponding to the signals received. This spindle therefore closes a first contact-break in each circuit of the letters, numbers, or signals beginning with the signal received. For example, it the first signal re ceived is a short signal, the regulator will send to the first group 01' the said distributm' a current which will traverse the elcctro-nmg net 54-. actuating the short signals spindle. At the second signal received by the relay 1() the regulator sends a current to the second group of the distributor which then closes a second contact break ineach circuit of the letters, numbers, or signals having as second signal the signal received and breaks the circuit of the letters having but one signal.

It the regulator sends a third, fourth, and fifth signal, etc.--the distributor succes'isively closes by its third, fourth, fifth groups etc.- the third, fourth and fijlth contactdarealis ol': the circuit of the letters, numbers or signals comyn'ising the number oi? signals considered and having as third, fourth, or fifth signal the signal received. On the receipt oi? a supplementary signal sent by the regulator the distributor opens the circuit of the letters, numbers or signals oi? which all the contactbreaks'are closed. i

The operation of this distributor will be better understood by the following description relating to the working Oil the ap1niratus as a whole, covered by the invent ion.

The typewriter is electrically controlled by the distributor hereinbeifore mentioned, and. is diagrammatically constituted oil the fol-- lowing parts.

A wheel 79 turning on a shaft 80 and having on its 1 )eriphery characters 81, 82, 83 etc. which-is constantly in contact with an inking roller 8%]: and is coupled by a friction gear with. an electric motor 8:) that is constantly in motion.

A printing cylinder 86 which carries in its rotary movement a band of mpel." ST and is further adapicd to be autematically projected at the desired moment against the wheel 79 so that each letter desired printed on the band of paper 37.

A fixed cylinder 88 cmieentrie with the characters wheel and having on its periphery a series of pins 89, 90, 91. moving in a rad ial direction and equal in number to that of the characters. llhese pins are depressed un- "der the action of respective elcctroanagncts 89, 90, 91 receiving their currentfrom terminals 92, 93, 94- which are connected with each of the circuits of the letters of the distributor. Under these conditions thelatter sends a current into that one of the electro-magnets 9t), 9'1. which corresponds with the letter selected, and the desired pin is thus depressed.

A carriage orarm 953 which is fired on. the shaft'oi. the character wheel 79 and which,

therefore, in striking against the depressed pin renders said wheel. 79 stationary and closes by means of the contact 96 the circuit of an electro-magnet 97 which controls the striking movement of the printing cylinder 86 against the desired character. 7

, A stamping electro-magnct 97 the movable armature 98 of which is pivoted at 99 with a return spring 100, cooperates with a ratchet wheel 101 forming part of the printing c yi inder 86, to project the latter against the ch aracters wheel 79 which at the moment is presenting the letter which is to be printed. This electro-magnet, afterthe impression of the letter, is returned to its original position by means of a system of articulated rods (not shown in the drawings), the pin that had been depressed, the carriage 95 and the character wheel thus becoming free. Another system of articulated rods 102 serves to advance the ratchet wheel at each impression.

The typewriteris supplied by the local source ofthe installation connected to the method of operation hereinafter.

terminals 103 (negative) and 104 (positive) and the typewriter and the distributor are electricallyinsulated from one another.

The local source is therefore connected in dividually to the three devices as follows To the regulator through terminals 47 (positive) and 48 (negative).

To the distributor through terminals 77 (positive) and 78 (negative).

To the typewriter through terminals lot (positive) and 103 (negative).

There are further three main operative circuits as will be more clearly described in the These consist briefly of:

(a) a circuit allowing operation on the spindle 49 comprising negative through conimutator 40, brush 45, collector 33, commutator 32, brush 34, terminal 37 to 38, terminal or 56, closed contacts on spindle 49 to operating magnet 54 positive terminal 77 of battery to negative 78.

(b) a locking circuit for the spindle 49 comprising terminal 77 (positive) electromagnet 54, contact on spindle 49 closed on its operation contact 73, to negative 78.

(a) a circuit allowing operation of the typewriter on selection of. the letter signalled and comprising negative, commutator l9, brush 21, terminal24, terminal 75, electro-magnet 74, closed contacts on locked spindles 49, one of electro-magnets 89,

90, 91, to positive terminal 104.

"Operation of the machine.

transcribed in the Morse code by two shor signals followed by a long, thus At the reception of the first short signal, the receiving arrangement connected with terminals 11 of the regulator actuates the relay 10 which opens the circuit of the electro-1nagnet 6 and closes the local current on electro-magnet 7. The latter draws towards it the pallet 5 of the anchored piece 3 which, in a movement towards the left unlocks disc 8 as well as the device formed by the cam tooth 39, the collector 4t) and the clutch ll, causing roller 2 to come into frictional engagement with disc 9.

Disc 8 drawn by its spring 12 turns about its axis carrying with it collectors 19 and 20, striking in 15 in its original position. The collector 20 in its movement closes, by means of resistance 20, the circuit of motor 1 which is put into motion and carries with it the shaft X X.

This causes the entire arrangement ;l9- .l-(J-4l, having been. carried on by the clutch 41 and being no longer held back by anchor 33 which had moved to the lel't,'to turn one half revolution and strike spur 4; to the. right of the. anchor. In this movement the conductive part of the collector 10 passes under brush 44 and the resistance 26 is shunted by resistance 27. By the decrease of resistance in series with the motor, the latter receives an impulse regulated by a lly-wheel, not shown in the drawing.

The roller 2 carried by the shaft X X turns disc 9, which, the signal having been short, is displaced but little leaving the conductive part of collector 32 in contact with the brush 34 connected with terminal 37 for short sig nals.

At the end of this first. short signal the relay 10 sends the local current into electromagnet 6 draws towards it the pallet 5 of anchor 3. This anchor being displaced to wards the right again liberates the arrangcment 39-40 41 which closes by means of the collector 40, the brush 45 and the collectors 33432, on the terminal 37 of the short signals and allows a current to flow the limited duration and constant value of which is regulated by the contact-breaker 46.

.The current from the terminal 37 enters the distributor by means of the terminal 55, passes through the closed contact-breaks 59 and 57 and returns to the local source by means of the electro-magnet 54 (short) of the first group of shafts of the distributor. Under the action of electro-magnet 54 (short) the shaft 49" (short) oscillates and becomes locked in operative position by a current coming from terminal 77 of the local source, passing through the electro-lnagnet 54 the contact break 105 then closed and the contact breaker 73. In its movement the shaft 49 opens the contact-breaks 57 and 58 and the electro n'iagnets 04;" and 54 become isolated from the regulator so that the following current coming from this regulator may act on the second group oil shafts of the distrilnitor. Simultauetuislythe said shaft 4L9 closes by its movement a emitact-breakin the circuit of the letters, numbers or signals having as first signal a short signal.

The second signal, also being short, current is led to the regulator in a manner similar to the preceding, to the terminal 55 of the distribtuor. The current passes by the closed contact breaks 106, 65, 62 and returns to the local source by the electro magnct 54-. (e) otthe second group of the distrilmtor. Under the action of? this electro-mannet the shaft L9" to) oscillates and becomes locked in a working position by a current coming from the local source by the terminal 77, pass- :ing by the electro-inagnet 54t the contact break 107then closes and retru'ns to the local source by the contact-breaker 73. Simultaneously, in its movement, the shalit c 49" opens the eontact brealts ($1, (352, 63

and thus automatically isolates itself from the regulator. It allows at the same tune by the tlnrd group of spindles of the distributor,

of the receipt of any further impulse of the current coming from the regulator, closes a contact-break in the circuit of letters, numbers or signals having, second signal a short signal and breaks the circuit of letters having but one signal by the contactdireaks 63 (eliminatiml of the letter e which would have been printedit an interval had occurred). v

At the reception of the long signal tornling the third signal, the regulator acts in a in an ner similar to thettoregoing but the roller 2 muses disc 9 to turn at a greater angle so that collector 32 shunts the current through the brush 35 connected with the terminal. 38 for long signals. This current comes into the distributor by the terminal 56, passes by the closed contact ln'eaks 1.08, 109, 68, 71 and returns to the local source by way of the electro-magnet 5 4. for the third nfroupof spindles of the distributm. Under the ac- 'tion of this electro-inagg'net the axis 49 oscillates and becomes locked in a working position by a current coming :l'irom the terminal 77 of the local. source, passing by the electro-n'iagnet 54: and the closed contact-break 110 and returning to the local source by the contact-breaker 73.

This axis 4L9 in locking itself closes a contact-break in the circuit of the letters, numbers or signals having as third signal a long signal, isolates itself from, the renulator and opens the circuit of letters having, but two signals (elimination of the letter i t' )ll Thethree signals being thus selected on the distributor a stop is produced that corerses the eleetro-magnet 74 and through the contact breaks 111, 112, 113, 114

responds to the interval between two letters. During this rest'tl'ie roller 2 causes the disc 8 to turn at a greater angle than that for the short interval that separates two signals of the same letter, as a resultott which the coininutator 12) comes into contact, towardsthe end of the interval with the brush suitably arranged for this purpose. The local current therefore led from the regulator through the terminal 24 and enters the distributor by the terminal T5. There it travmsses and 115 closed by the three axes blocked in a working position, to arrive at the terminal oil the distributor correspondingto the letter U. Thence the current passes through that one of the electro- nuurnets 89, 90, 91 of the typewriter corresponding to the letter U. This current depresses the corresponding one of the pins 89, 9O, 91' and opens by the contact breaker 73 the hloekii'ip; circuit of the three shafl ts oil the distrilmtor that had served for the selection oi" the lettor received. The apparatus has thus re turned to rest, ready to select the signals that follow.

During the reception of the following, signals, the carriage 95 of the typewriter is stopped by the pin forced down on the letter U ,the contact 96 is then auton'uttically closed actuating the electric-magnet 97 that controls the striking movement of the printing cylinder 86 against the charznzters wheel and the letter ll is thus printed on the paper band 87.

The roller 2 ol: the regulator then continues to carry forward the disc 8.

The commutator 19 by means of the brush 22 then closes the circuit on the terminal 2!.

Current is led to the terminal 76, comes into 116 and passes through closed circuit by traversing an. electic-magnet ot the type writer corresponding to a blank. There is thus formed on the band an interval analogous to that which is placed at the end of a word. The disc 8 of the regulator still continues to revolve until it is finally blocked by its retaining pawl 16. The coinn'iutator 20 then breaks the circuit of the motor 1 of the regulator as well as that of the motor 85 of the typewriter.

The apparatus has thus automatically returned to rest.

This apparatus is applicable to all transmissions of ll lorse signals received either by wire or by wireless.

The printing process may also be different from that hereinbe'fore described. For err-- ample, for long messages, one may print on a drum drawn forward with a helicoidal movement, and having on its surface a sheet of paper.

In. general, the details of the arrangements of the apparatus may be modified without thereby departing from the scope of this invention. V r V WhatI claim as my invention and desire to secure by Letters Patent is 1.- An automatic telegraph system for recording grouped dot and dash signals in type printed characters comprising an electrically-operated printing typewriter, a plurahty of electromagnets associated therewith for controlling the printing of the charac ters thereof, distributing means including .groups of pivotedcontact members adapted to control the circuits of said electro-magnets,

I electrically actuated means cooperating with saidmembers, and regulating means selec- I tively controlling said last-named means and including selector switches, a pair of oscillating disks'operatively connected to said switches, means for oscillating said disks, a

pair of electro-magnets one of which is adapted to be energized by the received signals,

the other of which is adapted to be energized only during theinterva'ls between signals,

means associated. with said pair of magnets for controlling the disk oscillating means whereby .to cause said disks to oscillate respectively in response to signals and to the intervals between signals and establish a cirmeans separating dot signals from dash signals, distributing means connected to said separating means including groups of pivoted contact members adapted to contact with corresponding fixed contact members, and electr cally actuated selecting means cooperatin g with said members, an electrically operated printingmechanism, and a plurality of electromagnets associated therewith for controlling the operation of said mechanism, the circuits of said electromagnets being controlled by said contacts, said separating means comprising selector swltehes, a pair ot-oscillating disks operatively connected to said switches, means for oscillating said disks, a pair of electromagnets one of which is adapted. to be energized by the received signals, the other of which is adapted to be energized only during the intervals between signals, means associated with said pair of magnets for controlling the disk oscillating means whereby to cause said disk to oscillate respectively in responsev to signals and to the intervals between signals and establish a circuit through its selector switches and predetermined contact members of the distributing means and energize the electromagnet in the typewriter controlling the character correspondingto the received signals.

3. In an automatic printing telegraph, a

, normally rotating wheel having type characters positioned around its periphery, a stop member fixed to the axis of said wheel and projecting outwardly vfrom said axis, a normally open switch on the outer end of said stop member, a plurality of elcciromagnets disposed in fixed positions around the circumierence of said wheel, radial pins adapted to be moved by said magnets into the path of said switch to thereby stop said wheel and close said switch, a printing electromagnet controlled by said switch, a printing cylinder normally slightly spaced from the periphery of said wheel, and means actuated by said printing magnet to move said cylinder into contact with the periphery of said wheel.

4. In an automatic printing telegraph, a normally rotating wheel having type char acters positioned around its periphery, a stop member fixed to the axis of said wheel and projecting outwardly from said axis, a nor- -mally open switch on the outer end of said stop member, a plurality of clect-romagnets disposed in fixed positions around the circumference of said wheel, a fixed cylinder surrounding said wheel, radial pins slidahly mounted in said cylinder and adapted to be moved by said. magnets into the path of said switch to thereby stop said wheel and close said switch, a printing electromagnet controlled by said switch, a printing member mounted adjacent the periphery of said wheel, and means actuated by said printing magnet to move said printing member into contact with said characters.

5. In an automatic printing telegraph, a wheel having type characters positioned around its periphery, means For rotating said wheel, a stop member mounted in fixed relation to said wheel, a switch carried by said stop member, resilient means for normally holding said switch open, a hollow fixed cylinder surrounding said wheel, electromagnets mounted on said cylinder, means for causing dot-and-dash impulses to selectively energize said magnets, radial pins mounted in said cylinder and adapted to be moved by said magnets into the path of said switch to thereby stop said wheel and close said switch, a printing electromagnet controlled by said switch, a printing member mounted adjacent the periphery of said wheel, and means actuated by said printing electromagnet to move said printing member into contact with said characters.

6. In a distributing apparatus for a printing telegraph, a pair of spring-actuated oscillating disks, a pivoted anchor piece adjacent said disks and having at its one end. a pallet and at its other end two opposed stop members, a pair of opposed electromagnets adapted to be energized respectively Cit when a signal is received and when an interal occurs between signals and adapted to actuate said pallet, a hollow shaft, a continuously rotating spindle i'eleasably connected to said shaft, a cam mounted on said shaft for alternative cooperation With said. step members for locking and releasing said shaft,

and a friction roller mounted on said shaft adjacent said disks and adapted to eontaet selectively with the peripheries of said disks m to rotate the same according to the position of the pallet.

In testimony whereof I aiiiz; my signature.

ROBERT EMILE MARIE PENOT.

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