US1540710A

US1540710A - Printing telegraphy

Info

Publication number: US1540710A
Application number: US247254A
Authority: US
Inventors: Pfannenstiehl Harry
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1918-07-29
Filing date: 1918-07-29
Publication date: 1925-06-02
Anticipated expiration: 1942-06-02

Description

June 2, 1925.

H. PFANNENSTEHL.

PRINTING TELEGRPHY Filed July 29, 1918 4. lSheets-Sheet l //7 1 /6/7/ or.' Harry /D/'d/MlehS///z/ H. PFANNENSTIEHL.

June 2, 1925.

PRINTIG TELEGRAPHY Filed Julyv 29 1918 4 Sheets-Sheet 2 H. PFANNENSTIEHL -PRINTING TELEGRAPHY 'Filed July 29, 1918 June 2, 192.5.

4 Sheets-Sheet 5 June 2, 1925.

H. PFANNENSTIEHL PRINTING TELEGRAPHY Filed July 29, 1918 4 Sheets-Sheet 4 N .NQ

Patented de i2.

HERY PFNNENSTIEHL, OF ORANGE, NEW JERSEY, ASSIGNOR TO WESTERNy LEC- RIG COMPANY, INCORPORATED, OF NEW YORK, N. Y., A. CORPORATION F NEW YQRR.

PRINTING TELEGBAPHY.

application med July 29, 1918. erial No. 247,254.

To all whom it mag/i conce/m.' v

Be it known that. l, HARRY PFANNEN- srinrin, a citizen of the United States, residing at Ilrainge, in the county of Essex, State of New Jersey,have invented certain new and useful improvements in Printing Telegraphy, of which the following is a full,

clear, concise, and exact description.

rllhis invention relates to printing telegil@ raphy and particularly toan improved type printer ot the abovetype suitable for printing messafes in page form and one which is capable o? producing a plurality of duplicate co ies.

'llo t e above ends, means are provided for distributing a series of current impulses to a plurality of selecting and operation controlling magnets, which magnets control the selection of the desired character to -be` printed .and operation to be performed. The invention disclosed in the accompanying drawings embodies a.l telegraph receiv-v ing printer comprisingstationary, selecting mechanism, a stationary paper platen and printing elements adapted to be moved transversely of the platen. p mechanism disclosed is of standard type- Writer construction and, in fact, the inventioni's applicable to any suitable typewritinav mechanism of the type bar class.

Various-auxiliary functions, such, for example; as line feed. carriage return and line feed, shift, unshift, unshift and character space, automatic signaling,' etc., are controlled by a'plurality of special code bars selectively controlled -by line current impulses. The various auxiliary operations of the printer are performed by electromag- A. further object is to provide a receiving' The printingnets cooperating with bell crank levers'or suitable operative members to effect the desired operation.

The selecting mechanism consistsof a plurality of stationary selecting magnetsl and a corresponding number of horizontal selecting bars controlled by said magnets. The selecting bars extend transversely and entirely across the printer and are` adapted to be raised and lowered but are not capable of endwise movement;

A plurality of code bars or permutation bars are provided and ,the arrangement ofv those lbars with respect to the selecting bars is such that when any combinationfisiset-up by the selecting magnets, only`one"0f the code bars will be permitted to move forward. and mesh ,with the selecting bars. Each of the code bars vcontrols a'pull bar which is.v adapted to be -moved'forward by l .a code bar when selectedinto the "path of a reciprocating printing-bar, which printingA bar is, in thefpresent instance, controlledV by an electromagnet. When a' pull baris moved forward yand engaged by the print` ing bar, a type `face carried bythe selected type lever is thrust against the .paper platen and the selected character printed; The selecting and printing operations aregsotimed that, while one character is being printed;

the next succeeding character maybe seey lected so that there is no time lost between the lselecting and printing c'ip'erations.`

. The aboveand other features of this ini ventionwill be fully 'setfforth in the following description and claims' and will more readily understood by reference to the accompanying drawings, in which-Fig. 1`ls a perspective View of ,the printer as assembled with parts broken f away to more clearly show the cooperation between the selecting mechanism and the4 movable type carriage and between the various stationary and movable parts; Fig. 2 is a vertical sectional oov viewtaken just to the right of thecen'ter of Fig. 1 with the movable type carriage 1n the center; Fig. 3 .is a. vertical sectional view through the "special selecting mechanism to Y the left-.hand side'of Fig. 1; Fig. 4 vis a plan view of a' portion ofthe selectingv mechalnism shown in Fig. 1; Fig. 5 is `a front sectional; view ofa portion of the selecting mechanism; Fig. 6 is a view ofen. adjustlable device for accelerating the action of the printing bar; and Fig. 7 is a diagrammatic.

showing of the circuits at the receiving station.

The mechanism herein disclosed is operated preferably by variousv combinations of live positive and negative selecting impulses with an additional impulse following each group of selecting impulses for controlling the printing and various-auxiliary operations. The impulses may arrive over a line L from a distant station and may be distributed to the selecting and operation-controlling magnets by means of a Baudot distributor, as shown in Fig. 7, or any of the other well-known distributing systems may be employed.

AIn order to simplify the drawings, a considerable portion of the frame structure has been-omitted. Also various springs which would normally be employed for restoring various operating parts t0 normal, have been omitted in order to avoid complicating the drawings. It'is to be understood, however, that suitable supporting means may be provided for the printer and selecting mechanism, and that-suitable springs-may be provided wherever necessary for assisting in the operation of parts and for restoring the various parts to normal. p

In the accompanying drawings are shown a stationary paper platen, a movable type carriage, and means for selectively operating the desired type carried by the movable type carriage.l The movable type carriage, including the type levers, bell crank levers, pull bars, universal printing bar, etc., is adapted to be moved from 'left to `right transversely of the machine against the tension of a spring member o-ne character space for each character printed, and the carriage may also be spaced without printing upon receipt of a special combination of line current impulses,A The carriage is adapted to be released by a special group of line current impulses and returned to normal under the action of a spring for commencing a new line.

Referring to the drawings, and particularly to Fig. 1, the invention is illustrated in combination with a type carriage of a form so well known as to require no detailed description. The type carriage 5,

vcarrying the t pe bars, connecting links,

code bars, etc., 1s supported by a portion of the frame 6 and a rotatable shaft 7 The selecting mechanism consists of five selecting magnets, 10, 11,-12, 13 and 14, five horizontal selecting bars, 15, 16, 17, 18 and 19, extending entirely across the printer at right angles to the code bars, and five latches, 20, 21, 22 23 and 24, extending from the armatures of the selecting magnets to theselecting bars. The selecting'bars are normally held in the position shown by means of the notched member 8 and when released and permitted to drop, they are held in their lowered positions by means of springs 9 until restored by the upward.

movement of the member 8, in which posi- Selecting and print-ing.

A better understanding of the apparatus may be obtained from a description of a particular character selection and the various operations incident thereto.

Assume that a series of impulses for selecting the character D is coming in over the line L, and further assume that the character'D is selected by five impulses combined in the following orderg-positive, negative, negative, positive, negative. Let it also be assumed that at the receiving station is a polarized relay 25 which responds only to positive impulses and which controls the energizing circuits of the selecting magnets 10 to 14, inclusive. It may also be assumed that the receiving distributor 37 rotates in synchronism with a corresponding sending distributor at a distant station and therefore the line impulses are distributed sequentially to the selecting magnets 10 to 14,`inclusive. Then since the first and fourth impulses are of positive polarity, current wil be supplied to the selecting magnets 10 and lkand since the second, third and fifth impulses areof negative polarity, no current will be su plied to selecting

magnets

11, 12 and 14. electing

magnets

10 and 13, when energized, attract their armatures and withdraw theirrrespective latches 2O and 23 from engagement with the corresponding selecting

bars

15 and 18. The

selecting bars

15 and 18, however, do not fall the instant the latches are withdrawn because thel bars are supported by the member 8, vwhich member is controlled by printing magnet 26. The five selecting impulses have now been received, the selecting

magnets

10 and 13 have been energized and the selecting

bars

15 and 18 have been conditioned for action awaiting receipt of `the sixth or printing impulse. After the distributor brush has passed over the first five segments, 30, 3l, 32, 33 and 34, which segments are connected to the five selecting magnets, the distributor brush then engages segment 35 and completes a circuit through receiving start relay 27, from grounded battery 28, to ground at amarlo the distributor. Current .normally flows through the left-hand winding of relay 27 from grounded battery 29 to contacts 39 and ground, but owing to the high resistance of this winding the relay is not suili'ciently energized to cause the attraction of armature 36 until the circuit is closed through the other winding from battery 28. `Wl1en current is. allowed to iow through both windings of relay 27, the armature 36 is attracted to complete parallel circuits through printing magnet 26 and character-spacing magnet 40. The circuit through the printing magnet extends from grounded battery 42, winding of magnet 26 to armature 36 and front contact thereof to ground and the circuit through the character-spacing magnet extends from grounded battery 41g, winding of magnet 40, to armature 36 and front contact thereof to ground. Although the energizing circuits through the printing and character-spacing magnets are established simultaneously, owing to the fact that the printing operation does not take place until an appreciable time'after the striker bar 43 has been actuated, the spacing operation may take place prior to the printing operation. It will also be noted that magnet 26,y

by operating rocker arm 44, opens the contacts 39, thereby breaking thecircuit through the high resistance winding. of the start relay 27. While Vthe current normally iowing through the high resistance winding of relay 27 is insufficient to cause the attraction of armature 36, it is suiicient to hold the armature 36 in its attracted position until the circuit is .broken at contacts 39. The printing magnet 26, in addition to actuating the striker bar 43, permits a plunger 46 to move vertically and therefore permits the rocker bar 47 to turn about its. pivotal point 48 under the action of spring member 49.l The member 8, in responding to the movement of the arm 47, is pulled own by suitable'springs until the shoulder 50 can.

ried thereby, engages the frame 'portion 51.

'lfhe selectedyk bars 15 and 18 willfollow the downward movement of the member 8 and will permit one and only one of the code `bars 52 to move forward, when released, astride the selecting bars. The code bars 52 are .normally held in the position shown by the universal bar 53 which extends entirely across the type carriage in front of extensions 54 carried by the ycode bars, the forward pull of springs 55 being insufficient to counteract and overcome the pull of springs 56. rllhe universal bar 53 and the printing bar'57 are moved out oftheir normal ositionsby means of the striker bar liich is forced downwardly when supporting rod is rotated, due to the energization ofprinting magnetA 26. 'llhe striker bar isv carried by two kbracket arms 58 and 59 which are pivotally secured to the supportingrod 60. The rod CU may be journaled in the sides of the printer frame or clearly shown in Fig. 2. 0n the supporting rd 60 and adjacent each of the bracket arms 58 and 59 is rigidly mounted an arm 62, which arms are adapted to be operated by therotation of rod 60.V llach of the arms 62 carries a kmember 63 which is normally held in engagement with its corresponding adjustable member 61 by spring member 64 butmay be held away from the members 6l for certain purposes, as will presently appear. It will be seen by reference particularly to Figs. 1 and 2, that when the striker bar 43 is forced downward, it will act on the extensions 65 and 66 of bell crank lever 67 and arm 68 which will move the universal bar 53 forward and the printing bar 57 upward. All of the code bars are normally held clear of the selecting bars by the 'universal bar 53 and when the universal bar is moved forward alliof the code bars, due to the action of the springs 55, -will also move forward slightly but only the selected code bar will be permitted to move forward astride the selecting bars. As the selected code bar moves forward, an extension 69 thereof engages a pin 70 on the corresponding pull bar 71 and moves its respective pull bar into the path of the reciprocating printing bar 57 so that on its downward stroke the printing bar strikes the end of the selected pull bar and by means of alink 72 connecting each of the pull bars with its corresponding type bar 7 3,v 'the selected type is thrust against the paper platen in a well-known manner. By selecting a printing magnet of proper type and size the downward stroke 'of the striker bar 43 can be made exceeding- 1y rapid and consequently the forward stroke of the universal bar and the upward strokev of the rintng bar can be made `equally rapid. y a proper selection of springs l56, 74 and 7 5, the universal bar and the printing bar may be returned to normal with equal rapidity and, in fact; it is desirable that the springs 74 and 75 be of such strength that the printing bar will strike the selected pull bar with such force that the pull bar willtravel ahead and disengage itself `from the printing bar and permit the spring 76 to return the actuated pull bar to normal position as the selected code bar is restored by the universal bar 53 under the action of springs 56. The quick action of the printing bar causes the selected type bar to be thrown against the paper platen with sufficient force for manifolding and may also be sudicient to cause the type bar to return to normal due to rebound, or the return action of the type bar may. be increased by providing a spring, such as 77, lc 'onnected to each of the connecting levers 4Q.

The spring member 75 (Fig. 6) preferably consists of a steel piano wire stretched tightly above the universal printing bar 57. One end of the spring 75 may be rigidly connected to the frame portion 7 8 and the other end may be connected to an adjustable upright 79. By means of the threaded screw S0 and knob 8l, the upright 79 may be moved transversely of the printer and the tension of the spring 75 may be accordingly controlled. Near the center of the universal printing barv 57 is a block 82 which is adapted to engage the spring 75 when the printing bar is moved upwardly. The primary purpose of spring 75 and the adjustable means therefor is to adjust the throw or force of the type bars for making various numbers of duplicate copies.

The function of the code bars is to move the pull bars corresponding to the character selected into the path of the reciprocating printing bar 57. Therefore, as soon as a particular pull bar has been engaged by the printing bar, the selected code bar should he Withdrawn so that the selecting bais may be stored and a new selection set up. The springs 5G should therefore be of such strength as to restore the universal bar 53 the instant ythe printing bar engages the selected pull bar. Immediately after the selected code bar is withdrawn by the universal bar 53, arm 160, which is keyed to rod 60, acting upon plunger 46, will rock the arm 47, and raise the member 8 to restore the selecting bars to normal, ready for a new selection.

Spacing.

Spacing between characters is effected by a spacing magnet and in the embodiment disclosed the type carriage is moved forward one step or one character space before each character is printed. A pivotally mounted rod 83 is provided which may be journaled in the frame of the machine or supported in any suitable manner. Rigidly secured to the rod 83 are two bracket arms 84 and 85 (only one of which is clearly shown) which carry a rack 86. The letter space magnet 40 operates a bell crank Vlever 87. To one end of the lever-87 is connected an operating lever- 88, on the end of which is a pawl 89 adapted to engage the teeth of a ratchet wheel 90 whenever the arm 88 is moved forward by the bell` crank lever 87, due to the energization of themagnet 40. rl`he rotation of the ratchet 90 effects rotation of the shaft 7 and by means of a worm wheel 91 mounted thereon and cooperating with the rack 86 the type carriage 5 is moved to the right one step 'or one character space for each energization of the magnet 40. A holding pawl 38 is provided to prevent backward rotation of the ratchet wheel 90.

'lhe spacing mechanism is so arranged that the type carriage will be stepped ahead immediately preceding the printing of a character, although spacing between characters may be effected if desired, after the printing of each character.

The magnet 40, in addition to spacing the type carriage,- operates a ribbon control mechanism which is normally in the position shown in Fig. 1. The operating lever 8b' has an upwardly extending arm 92 which, when operated, engages a crank arm 93 and, as will be clearly seen from Fig. 1, effects rot-ation of the rod 94. The iod 91 carries two bracket arms 95,-one of which is at each end of the platen frame, which act upon pins 96 and thereby cause the inking ribbon 97 to be moved in front of the typebar just as it strikes against thepaper platen. Springs 98, acting upon pins 9G, serve to hold the ribbon down from in front of the printed characters so that they are Ovcrlap arrangement.

The purpose ofthe overlap arrangement is to make possible the selection of a new character while the preding character selected isibeing printed. Each of the

latches

20, 21, 22, 23 and 24 is provided with a spring `99' normally tending to.pull the latch sidewise so that when the latches are withdrawn by means of the selecting magnets from beneath the selecting bars, the extension 100 carried by each of the latches' will be drawn over and back of the frame portion 101 and will remain locked in their withdrawn positions until forced sidewise again so that the extensions 100 'will clear the frame portion 101. .As soon as the latches are unlocked or the extensions 100 are moved away from,` engagement with the frame 101, they will be returned by the action of the springs 102 connected to the.

armatures of the selecting magnets until the bent-over portions 103 (Fig. 5) abutagainst the selected bars, in which position the latches will be held until the selected ba'rs are restored to normal, thereby permitting the latches to move in under the restored bars providing a succeeding selection does not interfere with the complete return of the latches. When the member 8 is released by the rocker arm 47 it is pulled down by the action of spring 104 until the offset portion 50 engages the frame portion lab leased.

5l (as clearly seen in Figs. 1 and As the member t; moves downward, the, pawl 105 carried thereby engages the end ot a sliding member 106 carrying a plurality ot' extensions or an extension corresponding to each ot the latches to 24, inclusive. As above. si ated, when the latches 20 to 24, inclusive, are actuated they lare drawn to the le-lt by the action otsprings 99 and remain locked against the trame port-ion 101 until they are moved to the right or re'- l`he sliding member 100 in its downward movement, dueto the corresponding movementot` member 8, causes the extensions carried thereby to engage the v beveled end portions of the latches 20 to 24,

inclusive, thereby forcing them -side'wise until the extensions 100 clear the frame portion 101, thereby permittingr the latches to return to normal'. The Imembers S and 106 and pawl 105 are so arranged that the member 106 isrforced downward just far enough to free the selec-ted latches 20 to 24 inclusive when the extension 107 of pawl 105 engages the frame portion 108, thereby releasing the slidable member 106 and permitting it to return to normal under the action of spring 109. r

lf a succeeding selection, coming before the selected bars are restored, utilizes one or more positive impulses corresponding to one or more of those of the preceding selection, then the latches will be'actuated by their respective magnets and remain in their actuated positions until the member 106 is again forced downward due to the action lof the rockable member 47 and slidingmember 8. The operation of the member 106 should take place preferably immediately after the selected bars are actuated so that the released latches may return and abut against the selected bars andl be in position to respond to the next selection, if required, or tomove under the bars the instant they are restored to normal if they are not required for a succeeding selection. By means ot thisA arrangement a-new selection may be set up while the preceding 4character selected is being printed. Thus it-will be seen thatl the purpose of the locking and restan-ing means for the latches is twofold. First, by locking the latches yin their actuated positions until the selected bars ing impulses has one or more positive im.

`pulses in common' with those of the precedlng group.

'.lumlz'ary selections.

ln addition to selecting and printing various characters and providing means for spacingbetween characters and words, as hereinbetore described, there arevarious auxiliai-y operations to be peformed, such, for example; as carriage return and line feed, line feed, platen shift, platen unshift, automatic signaling, ete.

To the left-hand side of Fig. 1. is shown a plurality of special code bars, 110, 111, 112, 1.13, 114 and `115,.which are, similar to the code bars 52 mounted on the movable type carriage 5. The special code bars are adapted to slide in recesses provided in stationary supports 11G and 117 and are selectively con'. trolled by line current impulses in the same manner as the character code bars 52; that is, the various auxiliary operations are selectively controlled by code signals which are transmitted in the same manner and by the same means .as the various character signals.

Carriage return and' Zz'nel feed.

W hen it is desired to. return the type carriage to the left to commence a new line,it is also desirable thatthe paper platen be rotated in order to feed the paper forward to present-a clean surface for the neXtvline of characters. This is sometimes accomplished by sending one group of impulses over the line to effect -the return of the type carriage and another group of im ulses to effect the rotation of the platen. owever, both operations may be effected. simultaneously and by a single group of signaling impulses. The return ot the type carriage and the feed-y ing of the paper may be accomplished by sending over the line a group of impulses to cause the selection of a special bar 115, which `group of selecting impulses is followed by a sixth or starting impulse as usual. The operationof magnet26 effects rotation of the rod as hereinbefore described, and forces the auxiliary striker bar 118 (which bar corresponds to the main striker bar 43)y down against the action of suitable springs, not shown. The bar 118, acting upon bell crank levers 119 and 120, moves auxiliary universal bar 121 (which bar corresponds to the main universal bar 53) forward and perrmits the selected code bar 115 to move forward astride the selecting bars 15 to 19, inclusive. As the special code bar 115 moves forward. it closes contacts 122 (Fig. '7) and establishes an energizing circuit for the carriage returnmagnet 123 from grounded batteryf 124, winding yot magnet 123, contacts 122, to ground. Carriage return magnet 123, when energized, operates a lever 125 which is keyed or rigidly secured to the rod 83, thereby electing rotation of the latter. To the miv bya holding pawl 135 until the ma ployed. When itis desired to print from rod 83 is also rigidly secured the Vbracket arms 84 and 85 which carrythe rack 86. The rod 83 also carries two rigidly supported members 175 (only one of which is clearly shown in Figs. 1 and 2). At the' free end of member 175 is an adjustable pin 127 so arranged that when the rod 83 is rotated the pin will engage the spring pressed member 63 and force it out of engagement with the adjustable pawl 61. The result is that when the rod 83 is rotated by the energization of magnet 123, the rack 86 will be moved out of engagement with worm gear 91 so that the carriage may be returned under the action of spring member 4128 and the actuation of member 63 will prevent operation of the universal striker bar 43 while the'carriage is being returned to normal position.

The special code bar 115 has a bent-over portion or extension 129 which is adapted when moved forward to engage a member 130 which is pivotally supported at 131 and close an additional set of contacts 132. The closure of contacts 132 establishes 'an ener- Uizing circuit for the line feed magnet 133 rom grounded battery 134, winding of magnet 133 and contacts 132, to ground. It will be observed from Fig. 7.that when the member 130 is, moved forward to close contacts 132, it willbe held in its actuated position y et 133 has rotated' the platen 136 a comp ete step through the instrumentality of the ratchet 137, pawl 138, lever 139 and bell crank lever 140, atwhch time the leverv 141 will engage the reaward extension of pawl 135 and release the member 130.

While separate magnets are employed for performing the carriage return and linel feed operations, it will be seen that both magnets are actuated simultaneously and by a single code group of impulses.

In order thatv the paper platen 136 may be rotated to line feed at times other than when the type carriage is being returned, a special code bai-114 is rovided which, when permitted` to ymove orward, closes contacts 132 and thereby establishes' an energizing circuit for Vthe line feed magnet 133, as hereinbefore p .y described.

Pl'dten shift.

The type bars are provided with two rows of type faces, one above the other. The lower row'of ty e is the row generally.. em

the upper rowof type faces, a particular group of signals is transmitted for selecting the special code bar'111 which cooperates wit-h suitable electro-mechanism to raise the paper platen so that when the type bars are operated the type of the upper row will be ressed against the platen.4 When the code bar 111 is selected and permitted to move forward, it engages member 142, and rotates it about its pivotal point 143, thereby closing contacts 144 to .establish an energizing circuit through shiftin magnet 145' from grounded battery 146, winding of magnet 145 and contacts 144, to ground. As in the case of the line feed mechanism, the contact controlling member 142 is locked iu its actuated position by means of pawl`147 until the platen has been moved to its desired osition, at which time the holding pawl 147 1s released. lVhen t-he platen 136 1s moved to its extreme shiftedposition by means of the rocker arm 148, a. pawl 149 engages the end of the rocker arm 148, thereby holding the laten in its shifted position until the holdmg pawl 149 is withdrawn.

Platen unshift.

T o unshift or return the laten to normal it is only necessary to unloc the mechanism which holds the platen in the shifted position. Two separate means are provided for operating the unshift mechanism depending upon whether it is desirable to unshift without spacing or to unshift and Space at the same time. To unshift without spacn a group of impulses may be transmitte" to select the special code bar 113 which, when permitted to move forward, closes contacts 150, thereby completing an energizing circuit through unshift magnet 151 from grounded battery 152, winding of -magnet 151andcontacts 150, to ground.A The instant unshift ma et 151 is energized and the pawl 149, whlch forms a part of the armature of magnet 151, is withdrawn from engagement with the rocker arm 148, the platen 136 returns to normal or moves into position for lower case printing. If it is desired to unshift and space, as when placing a. comma, period, semi-colon, etc. after a word (which special characters are invariably carried in the upper case position) vand then vprovide the usual space between `words, this may beaccomplished b selecting a s ial code bar 112 which, w en permitted to move forward, likewise establishes an energizing circuit for unshift magnet 151 by ,the closure of contacts 153.

It will be noted that code bar 112 is the only one of the special code bars not provided with an upwardly extending arm to prevent the operation of the spacing mech anism. When the special code bars are selected to perform the various auxiliary operations herein mentioned, it is necessary to provide means'to prevent the' actuation of the type carriage so that character spacing does not take place except when desired. This is taken care of b v providing a le`ver 156, which cooperates with an arm 161 and prevents the actuating pawl 89 from engaging the teeth of the ratchet wheel 9() when any of the code bars 110, 111, 113, 114 or 115 is selected.. When the impulses for riage when desired and to be' withheld fromA engagen'ient with ratchet wheel 90 by means ot' a cam member 163 when spacingis not desired. The pawl 89 when revolved, rides upon the cam surface 163 and, unless the arm 161 is prevented from restoring to normal, the pawl 89 will engage the vsucceeding tooth of the ratchet wheel 90 for effecting the spacing upon the subsequent energization of magnet 4t). However, when any one of the tive special code bars is selected, as mentioned above, the ,lever 156 which'is pivotally mounted on the supporting rod 155 and which is adapted to be actuated when any one of the five code bars moves forward, causes the bent over portion 162 to be moved under and back of an extension on the arm 161. The'movement of the bent over portion 162 under the extension of the arm 161, thereby maintains the pawl 89 out of engagement with the teeth of the ratchet wheel D() and prevents movement of the type carriage upon the subsequent energization of vmagnet 40. The arm 156 is adapted to be restored to normal upon the rece tion of a succeeding group of 'impulses w iich again energizes magnet 40 and moves the

levers

87 and 88 together with the pawl 89 and the member 161, and since the special code bar has already been released and restored to normal due to the deenergization of magnet 26, the arm 156 will then move out of the path of thearm 161 and be restored to normal b v means of a suitable retractile spring (not shown). The .arm 161 is then restored to .its normal position by means of the retractile spi-ing secured thereto and permits the pawl 89 to engage a succeeding tooth for stepping the type carriage upon the subsequent energization of magnet 40.

Automatic signaling.

- selecting magnets. This feature is covered in a separate application and forms no part of the present invention..

Vhat is claimed is:

1. ln a printing telegraph receiver, a type carriage comprising a plurality of type bars, an electromagnet for moving said type carriage transversely for character printing, and stationary permutation means for selectively controlling the operation of the type bars.

.2. In a printing telegraph receiver, a traveling carriage having a plurality of selectable. members movable therewith, an electromagnet for moving lsaid type carriage transversely for character printing, a plu-` rality of similar stationary selectable members,and means common to all said members, for selecting any one of them.

rln a printing telegraph receiver, the combination of a carriage having a plurality of individually operable'code bars, an electro-responsive device -for moving said carriage, and stationary permutation Vmeans for selectively controlling the operation of said code bars.

4. In a printing telegraph receiver, a movable vtype carriage comprising a plurality of printing bars and extensions therefor, a printing magnet, a member arranged transversely of said printing bars, and means operated by said'printingmagnet for permitting said member to'engage an extension of said printing bars to effect the printing of a desired character.

5. In 'a printing telegraph receiver, a stationary paper platen, selecting mechanism, a plurality of type levers responsive tosaid selecting mechanism and cooperating with said paper platen for printing any desired character,` an electro-magnet for moving said type levers to print the desired characters, and all lnechanical means operated directly by said electro-magnet for restoring said selecting mechanism to normal to be in readiness for the selection of -a character before the printing of the preceding character selected thereby is completed.

6. In a printing telegraph receiver, selecting mechanism, printing mechanism responsive to said selecting mechanism, an electromagnet for moving saidprinting mechanism in ay transverse direction with respect to said selecting mechanism. a printing magnet, and means controlled by said printing magnet whereby a vnew character may be selected before the printing of the preceding cha acter selected is completed. i

7. In a printing telegraph receiver. a selecting mechanism comprising a plurality of selecting bars movable in a direction trans` versely of their length, latches for holding said bars in their normal positions, `means for withdrawing said latches to permit actuation ot said selecting bars, means for moving said selecting bars ina direction transversely of their length following-the withdrawal et said latches `and electro-responsive mechanism for restoring said selecting bars to normal.

8. Printing telegraph apparatus comprising a paper platen, a support for said platen, a rocker arm engaging said support, a plurality of movable members, an electromagnet individual to each of said members and means for selectively operating one of said members for causing the energization ol said electromagnet and the cooperation thereof with said rocker arm for shifting said platen.

i). Printing telegraph apparatus comprising a paper platen, a support for said platen, a rocker arm engaging said support, an electromagnet operating solely 0n said rocker arm for shifting the platen, and a latch caused to engage the rocker arm upon the movement thereof for locking the platen in its shifted position.

10. Printing telegraph apparatus comprising a paper platen, a support for said platen` a rocker arm engaging said support, an electromagnet operating solely on said rocker arm for shifting the platen, a latch caused to engage the rocker arm upon the movement thereof for locking the platen in its shifted position, and selectably operatedmeans .for withdrawing said latch from engagement with said'rocker armi 11. Printing telegraph apparatus comprising a paper platen, a support for said platen, a rockerarm engaging said support an electromagnet cooperating with sait rocker arm for shifting the platen, a latch caused to engage said rocker arm upon the movement thereof, and an elcctromagnet controlledby a special group of impulses for withdrawing said latch from engagement with the rocker arm.

12. In a printing tele raph receiver, the combination of a trave ing type carriage comprising a plurality of character arms, a selectable member individual to each character arm, and an actuating arm, with stationary selecting bars cooperating with said selectable members to select one of said character arms, and an electromagnet cooperating with said actuating arm to actuate the character arm selected. a

13. In a printing telegraphreceiver, selecting bars, means for selectively releasing said bars, means for retaining said bars in a normal position, a magnet for rendering the retaining means ineffective to cause the released bars to move from their normal position. code bars cooperating with said selecting bars, and a printing bar opera-ted due to the energization of said magnet for causing the printing of a character in accordance with tuhe code bar selected.`

14. In a printing telegraph receiver, peri'nutation bars normally tending to move, ans controlled by line current impulses directly conditioning the permutation bars for n'iovement1 an electro-responsive dcvice also controlled by line current impulses, a rocker-arm operated directly by said device when energized for releasing the permutation bars in various combinations, and a plurality of type lever operating elements, one of said operating elements being selected upon the setting of said bars in various combinations.

15. In a printing telegraph receiver, a printing magnet, a movable type carriage comprising a plurality of printing elements, code bars cooperating with said printing elements and carried by said type carriage, and means controlled by said code bars and actuated directly by said magnet to eii'ect the actuation of said printing elements.

1G. In a printing telegraph receiver, the

combination of a movable type carriage, printing elements carried thereby, electromagnetic means for moving said type carriage, a plurality of selectable code bars, means ior causing the selected code bars to control the printing elements, and means cooperating with the code bars for actuatinthe printing elementsv to print a desire character.

17. Printing telegraph apparatus comprising a traveling type carriage, a rack, a Worm gear traveling with said carriage and cooperating with said rack for advancing thc carriage step by step, an electro-responsive device and means operated directly by said device for withdrawing the rack-from engagement with the worm gear to permit the return of said carriage.

18. In a printing telegraph receiver,- a selecting mechanism comprising a plurality of permutation bars, means for selectively releasing said bars in various combinations, a printing magnet, universalmeans actuated directly by said printing magnet for permitting the released bars to move to their selecting positions in a number of dilerent combinations, and a plurality of type lever operating elements one of said elements be- Alecting positions in a number of given permutations and for effecting the printing operation upon the deenergization thereof.

Q0. In a printing telegraph receiver, the combination of a current distributor, a pluralityinf circuits connected thereto magnets insaid circuits, a plurality of selecting bars one for each magnet and controlled thereby, a movable type carriage carrying the charcombination of a current distributor, a plu rality of circuits connected thereto, selecting andpoperation controlling magnets in said circuits, a plurality of selecting bars one for each selecting magnetand controlled there:

by, a movable type carriage'carrying' a plurality of type levers, a plurality of spring tensioned'code bars selectively controlled by the relative position of said selecting bars,

and an electro-responsive device controlled by said operation controlling magnet and cooperating with said code bars and selecting bars to select the desired character to be printed.

' Worm 22. In'a printing telegraph receiver, a current distributor, a plurality of branch circuits connected thereto, type selecting ymagnets and an` opera-tion controlling relay in said branch, circuits, a movable type basket carrying characters tobe selected, an electromagnet under the control of said operation controlling rela-y for moving the type carriage, and an additional. magnet likewise controlled by said operation controlling relay for printing the desired character.

' 23. In a printing telegraph receiver, a laten, a movable type carriage,- 4means or moving sald type carriage transpaper versely of theplat'en in one direction step by step, electromagnetic means for controlling the return of the ty e carriage to normal position and for rotating the platen simultaneously', and means for efecting one of said last-mentioned operations independently of the other. p

24. In a printing telegraph receiver, a

rotatable paper platen', a ,movable type. carriage,v an electromagnet for moving said type-'carriage in one direction step by step,

'anda device controlled by a' special group. 'of impulses for permitting the return of the type carriage and for effecting rotation of theplaten. y v

25. Printing telegraph apparatus comprising a rotatable platen, a traveling ty e carriage including a` pluralityv of in ependently movable type levers, a rack, a ear cooperating with said rack for advancing the carriage, and a magnet controlled by line current impulses for ,eiecting rotation of the platen and for withdrawing the rack from engagement with the worm gear to permit the'return of said carria e. v

rinting` telegraph apparatus comprising a paper platen, a type carriage capable of movement transversely of said platen, a magnet for shifting the said platen, means for holding the platen in its shifted position, and a second magnet controlled by a special group of line current impulses for permitting the advance of said carriage and for releasing said holding means.

27. In a printing telegraph receiver, a plurality of selecting elements, an operating member individual to each of the elements, electromagnetic means for operating said members sequentially, a member common. to

said operating members for controlling the simultaneous movement of said selecting elements in accordance with thesetting of the yoperating members, and electromagnetically operated means operated following the recei t of the selecting current units for supp ying energyto operate said common member. v

28. Ina printing telegraph receiver, a plurality 'of selecting elements, an operating member individual to each of the elements, electromagnetic means for voperating said members sequentiall a memberk common to said .operating mem rs for controlling the simultaneous movement of said selecting elements in accordance with the setting 4of the` operating members, and electromagnetic means energized over a local circuit-,said electromagnetic means itself operatin said common member to permit the positioning of the selecting elements in various combinations.

29. In a printing telegraph receiver, a

plurality of selectingy elements', a plurality my name this 24th day of July, A. D., 1918.

HARRY PFANNENSTIEHL.