US3210471A - Printing telegraph apparatus - Google Patents

Description

Oct. 5, 1965 'r. l. PRzYslEcKl 3,210'471 PRINTING TELEGRPH PPARATUS Filed Dec. 20, 1945 7 Sheets-Sheet 1 FIGJl w i lNvENToR THEODORE I. PRZYSIEQKI ATTORNEY T. I. PRZYSIECKI PRINTING TELEGRAPH A'PARATUS '7 Sheets-Sheet 2 Filed Dec. 20, 1945 THEopoR-f. l. PRzYslEcKl i AfToRNEY Octv. 5, 1965 v1'. PRzYslEcKl 3210471 PRINTING TELEGRPH PPARATUS Filed Dec. 20, 1945 i 7 sheetvs-sheet :s

; mvsNToR THEODORE I. PRZYSIEGKI ATTQRNEY United States o 3.210,1'471 -PRINTING TELEGRAPH. APPARATUS Theodore 1.' Przysiecki,'Elmwood Park, Ill., ass'ignor to Teletype Corporation, Chicago, Ill., a corporation of Delaware z Filed Dec.` 20, 1945, SeiNo. 636,215

74 Clarins. (ci. 178-34) `This invcntion pertains to 'printing telegraph apparatus and more particularly to pparatus for recording information in plain or enciphered form.

A principal object of the invention lis to provide simpie, compactand reliable facilities in telegraph apparatus for convertingmessages from ciphered form to intelligible form to facilitate the secret communication of messages.

Signaling systems are desirable for naval, military, and

civil purposes wherein it is required that messages be rendered unintelligible to persons unauthorized to receive them. Surreptitious interception of messages may be accomplished by vunaufthorized persons, for example, in

the caseV of wire Communications by tapping signal wires,

.and'in radio communication by means of receiving ap- `paratuses tuned to the proper frequencies.

*-In .order to encipher messages by the present system with which the present apparatus is utilzed, the elements of the code |combinations of vthe original, intelligible mes- Eneipheredsicriel "Letters" Patented (lot. o Si 195j5` 2 the key signal, but both sets of code Wheels occupy'the same corresponding position at all times. A stationwhich receives enciphered signals is thus enabled to decipher the .unintelligible signals transmitted over the telegraph line by combining enciphered signals with key signals provided by vthe ciphering device or maze.

To illustrate a deciphering operation, the example given w above in connection with the enciphering operation willbe continuedand it will be assumed that a receiving station received the enciphered signal; namely, Lettrs The Y" combination provided by the ciphering deviceat the receiving station can now be combined with the received. '*Letters combination to decipher the enciphered signai lto thereby reproduce the original signal`R, as clearlyh shown in the following chart:

M M M M M Key signal'f'Y M S M S M Originallsignal 'R" S M S M w. S

The transmitter, receiver, and ciphering device according to the present invention are associated andcombined O through the medium of electrical circuits whereby various communication conditions may be readily established.

sage are combined with the elements ofcode combinations provided by a ciphe'rin'gdevice or maze. According to the principles vof the present invention, opposite signaling conditions produce a marking signal, that is, with one im- Vpulse element of the original code combination marking and with the corresponding impulse element of'the key code 'combination of spacing nature, then the resultant signal impulse i's of marking nature. On the other hand, however, like signaling conditions, that is, with both impulse elements marking or both elements of spacing nature, produce spacingsignals.v This presumes, of course,

thateaeh of the v'elements of the lrespective code combinationsare .related'to each other. That is,`the No. 1

element 'of the original code combination is combined with thevNo. '1 element of the key code combination, and so forth. Totake .a 'specific illustration, let it be assurned that it'is desired to encipher the characteriR which in the Baudot code is composed of spacing, marking, spacing, marking, and spa'cing conditions. Let it be further assumed .that the code Wheels of the ciphering device with which the particular enciphering operation is'to bepe-r- 4'fofrrned occupy such a positionwhereat it is conditioned for producing the letter "Y combination which in the Baudot code is 'composcdiconsecutively of marking, spac- 'ing'; marking. s'paci'ng, and marking conditions. Under -theassumed conditions, the encip'hering operation Would Through suitable'switching means, conditions can bc set up for communicating secret messages, plain English messages, enc iphering or deciphering of messages. In preparing an enciphered message locally notonly is the message enciphered but also the spacing mechanism is conditioned to insert automatically an extra space every fifthcharacter.

'Reference is made to copendi'ng applications Serial Nos. 636,216 and 636,217, now U.S. 'Patent No. 2,802,463, filed Dec.'20,` 1945, covering other' apparatus used' in :the system embodying the present invention.

A more comprehensive understanding of the'inventionK may be had by reference to the following detailed dscrip tion when considered inconjunction with the autempanying drawings, wherein,

FIG. 1 is a front elevational view of the printing unit according to. the present invention; FIG. 2 is a sectional view of stantially on line 2-2 of FIG. 1;

FIG. 3 is a top view of the printing unit;

FIG, 4 is a view, partly in section, of the main operthe printer taken V;sub-

' ating shaft;

-re'sultin the production of an all marking or letters com- -bination,. since in this particular illustration opposite conditions of `all the lrclated'elements of R and *'Y code combinations are provided. This will be readilyapparent from the following chart whereinsthelctter M indicates a markin'g'condition and the letter S indicates la spacing condition; i i i It isiunderstood that both the transmitting and receiving i stations of a telegraph system will be equipped with identical ciphering devices, the code Wheels of which during jmessa'getransmission Will occupy identical positions.

VDuring transmission the code Wheels of the cphering devicesare rotatedorstepped between characters to modify i start-stop andorientation devices.

Referrng now to the drawings wherein like l.reference PIG. 5 is a fragmental rear vi ewV of the printer showing the .spacing mechanism;

FIG. 6 isa sectional view taken online 6-6 of'- FIG. 5;- FIG. 7 is a fragmentary rear perspective view of the printer showing the type wheel' control ;mechanism FIG. 8 is'a partial rear elevational view ofthetypef.

wheel Operating mechanism and the'shift mechanism;

FIG, 9 is a view, showing certain operative conditions,

lof the type wheel stop plates;

FIG, 10 is a sectional view taken on line 10-l0. 0ft.`:

FIG. 8; i

ratus according to thev present invention; and FIGS. 13, 14, and 15 are various viewscharacters ndicate the sameA part throughout theiseveral views and partieularly to FIG. 12, there is shown the. combined apparatus'according to the present ,invention en-V closed in a housing 11, and comprisingsubunits 12, 1.3, and 14 .identified as the printing unit, transmitting unit"` and cipheringl unit,-respectively. A tape 15 is shown` emerging from the housing ll after having, a cordw;

FIG. 11 is a sectional view showing the printing oper-`v ating mechanism and the function lever reset mechanismp FIG. 12 is a perspective view of the cornbinedappag;vv

showing the .type wheel 16.

The transmitting mechanismlcomprises, besides theV unit 13, a; keyboard 17.` An operation counter (not shown)is embodied in the transmitting unit and a'viewer 18 is provided in the housing 11 adjacent said counter to note the reading thereof. The accessories associated with the ciphering device 14 and extending through the front of the housing'll will be described hereinafter.

Havingreference toFIGS. v1 to 4,,the printing unit 12 includes-a main supporting frame 19 and a `front mounting plate 21 secured to said frame. lSuitably journaled in brack'ets 22 mounted von frame 19 is a main Operating shaft 24 which carries the function cam sleeve v25 and selector cam sleeve 26 ;(FIG. 4). Associated with the selector cam sleeve' 26 is a plurality of selector levers 27, mounted pivotally `on arod 28 journaled in top frame member 29 supported on side frames 19. Each lever A27 27 .and 38 will be permittedto rotate, thereby enablingm h extremity 56 of lever 27 to cooperate with shoulder 34 as will hereinafter appear. After shoulders 41 having been disengaged from plate 42 and levers 38 actuated rightwardly by Springs 43, said levers 38 are returned to their leftward position` (as shown in FIG. 2) by a bail 5,7 operatcd by a cam `58 on shaft'24 through follower arm 59.

The cams 32 are of similar cam contour butaredisplaced on the shaft 24 angularly so that the pcripherai cam is provided with a ,cam follower portion 31 which cooperates with a selector cam 32. Levers 27 are normally biased in a clockwise direction (FIG. 2) by Springs 33 to urge the cam follower portions 31 against the pe-- ripheries oftheir associated cams 32.

and'rightwardly 'by its spring 43. The ends 44 of levers 38 cooperate withsarmatures 45 of ciphering magnets 46. When the 'magnets 46 are 'energized the armatures 45 are attracted thereby causing the screws 47 therethrough to' strike the Jends 44 of levers 38 and bias them in a clockwise directonto disengage shoulder 41 from the plate 42 and permit' spring 43 to urge the lever 38 rightwardly until the'limit stop'48'engages the plate 42.A Each lever 38'is provided withavertical portion :49 which is adapted The free end of to cooperatewith the selector armature 51 aof-a selector lmagnet 52, carried on a bracket composed of elements 53 and 54 secured to 'topframe member 29. The 'selector magnet 52 isshown in FIG.2 as energized n response to the` normal marking condition of 'the signal line, thereby holding thejarmature 51 attracted against the pull of springV 55.

Inthis condition of operation with the parts as shown in PIG. 2, thealever 27.upon encountering a cam notch in cam 32'will be: actuated 'clockwise by its spring 33 since i the portion49 of lever 38' is not blocked by the armature lever 51. 'Ifzlatthe' time magnet 52 is'energized,magnet 46 is also energized, the 'lever 38 will be vtripped at the should'er41'and the lever 38 would be urged rightwardly to bring limitstop 48 against plate 42 and portion' 49 would be positioned beneath armature'lever 51. Then when the notch in cam 32 registers with follower portion 31 'the levers 27 and 38 will not be rotated clockwise. In

a similar manner, in response to a spacing condition of the signal line, magnet 52 will be de-energized and armature `51 willbe actuated'to its clockwise position by spring 55 to bringthe extremity thereof over the portion 49,

and since levers 38 remain in their'leftward position when magnets 46` are unene'rgized,levers 27 and 38 will not be rotated clockwise when the notch -in cam 32 registers with the cam follower portion 31. Thus'it` is seen that when 'magnet 52` andma'g'nets 46 are energizedorimarking or when said magnets areunenergiedor. spacing, the portion 49 will beblocked 'by the armature 51.' On the in response to a spacingcondition, or vice versa, the portion 49'will notbe blocked by 'the armature 51 and levers .other hand, if' the Ar'nagnet' `52 `is'enerigized in response l'to'v a marking condition and the magnets '46 are unenergized notches thereon are disposed in a helically arranged series whereby coaction with the cam followers 31-'will occur in a sequential manner as the series of cams 32 rotates in synchronism with the speed of code impulsing.

As previously describcd, levers 27 cooperate with a-vcorresponding series of code bars 61 to 65 which are disposed vertically inthe machine and are slidably mountcd on a rod 66. Code bars 61 to 65 are normally biased upwardly by individual Springs 67. Springs 67 also tend to rotate code bars 61-65 clockwise about rod 66 causing them to bear against the ends 56 of -levers 27. Bara 61 to 65 are'coded in well known manner to effect the selec tion of a series of function control bars 71 to 75 which are carried horizrontally. on the plate 21 and disposed transversely of the code bars 61 to 65 adjacent the codledportion thereof.. f When a lever 27 is perrnitted to rotate clockwise due to the fact that' its cam follower 31 encountcrs a notch in. cam 32 and portion 49 is not blocked by armature 51,'the i vend 56 will be'fras'ed sufficiently due to the action of spring 33 to permit shoulder 34to be presented therebelow, and upon continuation ofrotation ofcam 32'lever v 27 will be actuatedcounterclockwise to, in turn, actuate' its associated code bar 61-65 downwardly thus altering the selective alignment of the code. notches which effect the seleetions of bars 71. to 75.

VAs viewed in FIGS. 2 and 9, code bars 61 'andl62' are provided at their lower ends with extensions 76 :md 77,

respectively, which cooperate with a series of stop plates 78, 79, and81 in the manner disclosed in US, Patent No 2.339.313, issued January 18, 1944, to W. I. Zenner, to effect the selection of the character on the type'segment 82 to be printed. Type segment 82 is secured to a shaft 83, and associated with the type segment 82 is va vtype .1. segment stop arm 84 which cooperates with the intornally cut notches on the stop plates 78, 79, and 81. Shaft 83 is journaled in a supporting sleeve member 85 which is secured to plate 21 by a nut 86. Stop arm 84 is secure'd to a sleeve lmember 8,7 which is provided integral therev I with with a pinion gear portion 88. Stop arm 84 is operatively connected to type segment 82 through a forked member 89 fixedly related to said type segment.

Pinion gear 88 is adapted 'to mesh witha pair of raeks 91 and 92 which are sldably mounted in lthe apparatus for Vertical reciprocation thcrein. Racks 91 and 92 are provided with confronting lShoulders 93 and 94, respectively, which cooperate with a rack pawl 95 having a' pair of oppositely directed pawl. teeth. Pawl 95 is provided'4` with an extension 96 (FIG. 2) which `ts into an open ended slot 97 in a Shuttle member 98 mounted for reciprocation on studs 99. lMember 98 is provided with al de. pending portion 101 throughwhich pivotal articulation is obtained with albell crank lever 102 pivoted at 103.

.A vspringA 1,04 (Flos. 2 and 8) is extended between" pawl 95 and the horizontal arm 105 of a centralizer bail member pivotally 'mounted on a rod 106.v A spacer rod 107 is inserted within the spring 104 and determines. the minimum distance between pawl 95 and arm 105.`

Code bar 63 is provided with a projection v108 which co operates with the hori'zontal arm of bcll Crank lever 102,

such that when'code bar 63 is 'actuated downwardly by its associatedV s'elector lever 27 inv response to the third ing member 98'leftwardly, to bring the left pawl tooth of pawl '95 into ope'rative relationship with shoulder'v 93 of `rack 91.

Power for operating bail 100 is derived from shaft.24'

through aneccentric 109 clutch driven thereon (FIGS. 2 and 7'). Eccentric 109 (FIG. 7) is pivotally articulated toarm 111 oftbail 100. Bail 100 has integral thercwith (as shownin FIG. 2) a depending arm 112 which cooperates with atype segment reset bail 113 also mounted on' pivot shaft 106. Reset bail- 113 is provided with an arm 114 to which is attached a light biasing spring 115, the effect of which is to cause bail 113 normally to follow the arm 112. The lower extremty of bail 113 is forked land is adapted lto straddle the type segment shaft 83 so that bail 113 in its counterclockwisc position (as viewed in FIG. 2) bears against a sleeve 116 carried on shaft 83 to hold shaft 83 and, thcrefore, type segment 82 in their rightward position clear of the springing zone to afford visible printing.

VThe leftward movement of the type segment 82 (FIG. 2) to effect printing from any of the four rows of type is controlled by a series of location levers 117, 118, and 119, and a fixed stop 121 in Cooperation with a type segment actuating spring ar'rangement identiiied generally by the numeric 122.-v The actuating spring arrangement 122 comprises aplate 123 `loosely mounted on a stud 120. Springs 130`ar`e, attached to each end of plate 123, the other ends ofsprings 130 being secured to the front plate 21.- Thelocation levers 117, 118, and'119pare Controlled by codebars 64 and 65 'which are provided at their lower ends with projections 124 and 125 (PIG. 7). The lower arms 'of location levers 117, 118,f and 119 are normally -in the path of sleeve member 116 so that if neither of the code'bars`64 nor 65 are selectively 'operated, the sleeve 1116 willbevbiased rightw'ardly (FIG. 7)` by springs 130 toabut the location lever 117 and present the first row '126 of theftype segment 82 above the print hammer 127 in printing position.

Location lever 117 is provided with a laterally extending projection 128 which underlies the horizontal arms of location levers 118 and 119. To effect printingfrom the secondrow of type, the code bar 64 is A tape guide'139 is suitablypositioncd with respectito I the print hammer`127 and type segment 82 and is carriedl their Shoulders 34 by ends 56 of selector levers 27 are disi engaged therefrom after eachicycle of operation by areset or stripper bail rod 143 carried on'a bail frame-144 selectively operated, which, through projection 128, ro-

ztates lever 117 clockwise (as viewcd in FIG. 7) against the pull of its' spring 129,.thereby prescnting lever 1118 to the ,sleeve 116, If printing is to beeffected from the third z row, then. the code bar 65 is selectively operated so that its projection 125 will rotate lever 118, which, through projection128 alsorotates lever 117 to present lever 119 'to'the sleev`ej1`16. If' printing is to be effected from the fourth'row; code bars 64 and 65 are both operated* to 'remove levers 117, 118, and 119 out ofv blocking relation with'sleeve 116 and perrnit springs125 to biasthe sleeve i 116to the..fixed stop 121.

Theprint hamnier 127 is carried o n aprinting arm 131 mounted on a pivot shaft 132. A link 133 (FIG. ll) is connected at its lowerend to arm 131, and at its upper end=toa follow'er'l lever 134 mounted on vpivot shaft 28 and' associated with a print control cam 135. A print Operating' spring 136 is connected to the free end of lever v134 andfto a fixed member 137 secured to the printer, frame structure. Linkv 133 at its connection to print arm .131 is provided with a slottcd hole 138 to produce overthrowfprinting. When the following lever `134 encounters the drop-off portion of the print control cam 135, the

- printing spring 136 will impart a Sudden impulse to the lever l134 and link 133, which impulse will be transmitted to theprint arm 131. The upward movement of link 133 is governed by the depth of 'the drop-off portion of cam 135. '-However, the momentum impar'ted to v'the print arm is sufficient to carry print hammer- 127 sharply against the'type segmentl`82, the slot 138 being sufficiently long to compensate for this movement. It is, of course, understood. that in-actual printing operation, vthe tape and ink- .ing -ribbon are interposed between Vthe' type segment and printing hammer. v

.Bar .152 governs the space suppression function and bar 153 governs the printing suppression function. Stop plates 78, 79, and 81 are slidably mounted on a shift plate 154, which is pivotally 'mounted on a shoulder .on sleeve 85. Stop plates 78, 79, and 81 are guided in their movement by ' studs 155, 156, and 157, and Springs 1581a re provided to hold said stop plates in their upper position. Shift'plate 154 is guided in its oscillatory movement by guide studs 159 and 161 and is provided with a stop'arm 162 which is operable between stops 163 and 164 (FIG. 1). A flat guide spring 165 (FIGS. 1, 8, and v10) guides arm 163 in its operating plane.

'Shift plate 154 is actuated to its clockwise or 'letters (unshift) position and to its counterclockwise or "figures (shift) position by the stop arm 84 acting against the right-hand end or left-hand end (respectively) of slot E166 in the-Shift 'plate 154. The direction of rotation of stop arm 84 is determined by which of the rack-s 91' 'ori9`2 is operated to rotate the pinion 89, and the operation ofthe racks 91 and92 is governed'by the position of `pawl 195 which is determined by the operation of bell crank lever 102 in response to actuation of code bar 63. Since `the letters code signalvis composed of all marking impulses, and since the "figures" code signal is composed vof the first and second and fourth and fifthv impulses m'arking and the third impulse spacing, it is apparent then, thatthe third impulse is determinative of the operation of pawl 95. The fact that the fourth and fifth` impulses are marking in each instance indicates that all three of the stop and as this bar is actuated by its spring 167, it will strike w -against a projection 168 on a blocking lever ='151 to' swing 'said lever .151 about pivot 170 to remove the blocking projection 171 th'ereon out of the path of the stop arm portion 162 of shift plate 154. After the arm 1'62 is" moved to the dotted line position shown in FIG. V10, the lever 151 is returned to its full line position by its spring '172 whereby projection 171 will be positioned above the arm 162, thereby looking the shift plate 154 in'its counv terclockwise position.

'An additional projection 173 is provided on lever151` which is cooperative with function control bar 73. In response to a space code signal the code bars 61 to 65 assume a setting such that bar 73 is selected and operated.

to effect, through projection 173, the counterclockwise rotation of lever 151 to remove projection-.171 o ut of blocking relation with arm 162 in the event the'shft plate v154 was in the shift or "figures" position. The function of the .arrangement just described is to effect the operation of,unshift on space, which assures that the printer mechanism is conditioned for printing `in the lower case g or "letters position'whenever a space signal is received. Another arrangement for .assuring the conditioning of the printer in the lower case or "letters" position will now be described. `Having reference to FIG. 3 there is shown on the left-hand side of the apparatus, a shaft 174 on the front end of which is secured a finger piece 175 adjacent a 'disc 176. vThe disc is loosely mounted on shaft 174 and is preSsed against finger piece or pointer 175 by a spring 177. Also fixed to shaft 174 is a cam member 178 (FIGS. 1 and 3) which cooperates with a 'bell crank lever 179. The horizontalarm of lever 179 coopcrates with a verti. cally slidable 'bar 181 (FlG. suitably mounted on pins 182' and 183 carried on the front plate 21. Pivotally mounted on pini183 is' a lever 184 which is'normally With this setting, the shoulder 213 no longer serves as the limiting stop for governing the spacing or fceding movement of the :feed pawl 202, this function being transurged in a counterclo'ckwise direction (as viewediin FIG.L i.

10) by a spring 185. Lever 184 is provided With a cam- -ming portion 186 which eooperate's with a 'pin or stud 187 carriedon slide member 181. Lever 184 is also provided ;with an extension 188 which cooperates with a projection -188 engaging project'ion 189, the lever 151 counterclockwise `toetfect the withdrawal of blocking portion 171`from the path of the arm 162 of shift plate 154 so that the portion 193 (FIGS. 8 and 10) may be eflective to'urge arm 162 to its uppermost or 'fletters" position.- After the stud l187 has passed over the projection 186, Vthe projection 171 will be returned to blocking engagement with arm 162i Referring`4 to FIGS. '5 and 6, the spacing ca-'m 194 is fcrred to a double space cam member 226, which in thev present einbodiment of the invention' is provided with four notches'spaced ninety degrees'apart. Cam 226 is integral 'with' ratchet 205 and cooperates with the spaceV control feed lever 203. Lever 203 is provided with a laterallyextending portion 227 and is adjustable about pivot 201 by'meansof eccentric screw 228 and spring 229 to properly align the portion 227 with the notches in cam 226. Now, when bar 197 is reciprocated'by means.

cam 226, the pawl 202 picks up only one tooth of ratchet 205. However, upon every fifth step the projection 227 will encounter a notch in 'the cam 22,6, whereupon the bar 197 is permitted to rise a greater distance and thus pawl 202 will pick up two teeth instead of one and thereby cause ratchet 205, and hence feed roll 207 to rotate an extra step. A dete'nt lever 231 biased by a spring 232v cooperates with ratchet 205 to hold ratchet 205 in its shown mounted on main sh'aft' 24 and controls a spacing or tap'e feed lever 195' which is mounted 'pivotally on shaft 28. 'Le'ver 195 carries adjustably on its free end a striker portion 196 which cooperates with a tape feed pawl push bar 197 slidably carried on studs 198 and 199,

Pivotally mounted on a pivot stud 201' attached to bar 197 are' a pair' of tap'e feed pawls 202 and 203. Pawl' 202 is normally' biased clockwise by a spring 2,04 into Cooperation with ata'pe'feed ratchet 205 lso that uponl is securedito a' shaft 206 suitably journaled in the vfront plate 21. To'the shaft 206 is also fixed a tapefeedrollei'- .207 (FIG. I) which eooperates with a pressure roller 208 carried on a pivotd bracket 209 actuated by a spring 211.

The spaeing'v bar 197' is normally biased upwardly by a spring 212 and' bears against portion 196 of lever 195. vAs 'lever 195 is permitted by cam 194 to rotate thus causing portion 196 to rise, the spring 212 is instrumental in raising 'the spaeing bar 197 with the pawl 202 thereon, so that pawl 202 picks up the next tooth on the ratchet 205.l The "'extent of vertical movement of bar 197 is governed by the shoulder 213 Vof a bar 214'slidably mounted on studs 2.15 and 216. Then. as cam 194 continuespto rotate, it will cam the lever 195,2 and hence the portion 196, downwardly to 'effect the Stepping of ratchet '205 through 'one angular step.

In the event double spacing automatically every fifth character isv desired, the 'following mcchanism is provided.

The'carn member 178 is'provided with a cam extension 217 whichfcooperatesjwith a hell crank vlever 218 which stepped position.

When certain functions are to be performed, lit is desired to suppress the spacing operation, and toachieve t this resulttthe space suppression lever 152 ispivotally supported on a pivot 234 mounted on the inside' of plate 21. Lever 152 is provided with projections adaptcd to cooperate 'with vfunction selecting bars 71, 72, 74, and 75.'

Lever 152 terminates at its upper end -in a hook portion 236 which cooperates with a projection 235 integrall with the space bar 197, such that when the lever 152 is actuated clockwise (FIG. 6) by the selective operation of bars 71, 72, 74 or 75, as previously described, the book pottion ,236 will be positioned directly above the projection 235 to thereby prevent the upward movement of the barv 1.97,

' and hence pawl 202. The pawl 202 is thus' prevented is pivotally carried on stud 215. j Lever 218 is normally 1 urged counterclocl'twise (FIG. 5) by a spring 219 to bring the ' stud 22,1 thereon againstp'a depending portionv222 of.

slide member. 'V214 to thereby hold the slide 214 in its.

shaft 174 isrotatedto bring'the index notch 191 (FIG. 81) in registi'y with the' E'I (enciphering) position, the

J cam 'portion 217 will become effective to rotate bell Crank 218 clockwise (FIG. 5) against the action of its spring 219. Howev'er, a further spring 223 is provided between rightward-p'osition against studs 215 and 216. ,When

from picking up a tooth on theratchet 205, and hence the' ratchet is not rotated so lug 235.

Lever 152 carries pivotally thereon alatch 237 which is normally biased counterclockwise about its pivot v23.8 by a spring 239. 'Ifhus, when lever 152 is actuated clock- Wise by'any of thebars 71, 72, l74 or 75 the llatch 237' will` engage a ledge 241, thereby yholding lever 1'52`in its clockwise position with the hook 236 in blockingposition over lug 235. However, at the end of the cycle of revolution of cam 194 the bar 197 is given a downward thrust a suflicient to effect the disengagement of latch 237 from ledvge 241, since bar 197 is provided with a laterally dtrected lug 242 which Strikes latch 2,37.

, Having reference vto FIG. ll, it is observed that the printing suppression lever 153 is'also pivotally mounted on pivot 23,4 carried on plate 21.. Moreover, lever153= i is provided withllugs which eooperate with function selector bars 71, 72,74, and 75 as in the case of space sup, pression bar 152. Lever 153 also terminates "at its .free

end a hook portion 243 which cooperates with a later' I I ally dreeted lug244 integral with the printing link 133.

w Lever 153 alsocarries pivotally thereon a latch 245 similar to latch 237. Thus, when lever-153 is actuated clock'V v Wise by any ofthe bars 71, 72, 74- or 75 the book portion 243 is positioned over the lug 244 thus preventing the lever 134 from responding to the pull of spring 136 dur-l The function control bars 71 to 75 which are pivotally articulated at 246 (FIG. 3) to the front plate 21 and biased toward the code bars 61 to 65 by individual Springs 167- are governed in their movement toward and away'l' the shouldcr 21s out ef long as hook 236 blocks;A

lthe' two sets of fof'jileverf267' cooperates with a cam 273 which is prol'videfd'withga peripheral camV notch through the instrurnentality of which lever 267 isoscillated periodicallyvto cause a periodic closing of contact pair 269.

from code bars 61.to 65 and levers'151, 152, and 153 by a'reset bail member .247 (FIGS. VI, 3, and 11) -pivotally supported on brackets 248 and 249 mounted on front plate 21. "Referring to FIG; 11, a function reset 'lever arm 251- is pivotally mounted at'252 on the frame 29 and is provided at its free en'd with an adjusting screw 253 with which it cooperates with the bail member 247. Lever 251 is connected by a link 254 to the function reset 'lever 225. The'lev'er 225 is normally held in operable relation with cam 255' by a spring 256. When the lever '225,rideson the high'part of cam 255 the lever arm 251 is held in its clockwise position'so that through screw 253 the bailj247 is maintained in a position to hold the bars 7'1to 75 against the action of their individual Springs 167,

65 and bars' v151, 152, and 153. `As the follower portion 257 of `lever"225 fallsinto `the depressionin cam 255, the bail 247 is actuated rightwardly (as viewed in FIG. ll) to permit bars 71 to 75 to cooperate with code bars 61 to 65 and bars 151, 152, and 153. I

,The orientation device is shown in FIGS. 13, 14, and 15V and comprises. a 'graduated scale member 258 which is` fixedly mounted on the frame 29 and carries a clamping screw. 259 lwhich cooperates with an orientation plate 26`1'which,in turn, is rotat'ably mounted on the shaft'24;

An index notch1262 -is provided on the edge of plate 261 to cooperate .with theindications on plate 258. Having reference to FIG..4, an laxially ex-pansible or ex- 'tensible'isleev'ej263 is mounted on shaft 24, and a spring .264:.mounted 'thereo'n extends the sleeve 263 to impart ;pressure to the`l fr'iction material 265 embracing the se- .lector cam'sleeve 26, thereby providing a frictional drivz ing means-forthe selector'cam sleeve 26.

z l''Plate '2611188v projecting therefrom a stud 266 on which .ispivotallysupported a lever 267 having a depending larrn``268V which' cooperateslwith a contact pair 269 which, "in turn,`c-ont`rols'a circuit for energizing a magnet (not shown)th'at controls the operation of the ciphering de- -vice or rotor. Incidentally, contact 269 also controls mixer magnets 45 and 353. ,An arm`272 "Alsomounted on stud 266 is a bell crank lever 274,

' one; arm 275 of :which cooperates with a start-stop disc '276 integral with sleeve 26, the other arm 277 of which -co'operates with an arcuate slot 278 in a release lever .279 pivotally mounted on a pivotshaft 281 suitably carried in' frame 29. Release lever 279 cooperates :at

lfit'slfree end with the selector magnet armature lever 51 yand *fis *normally biased counterclockwise by a spring ;282. ".fWhen the selector magnet 52 is energizeddue-to fmarking currentl on the line, the end of armature 51 will v;fun'ctionz to block the counterclockwise movement of rekleasellever 279. Howcver, in response to a spacing impls'e(`no icurlrenton the line), the end of armature 51 willbe'swungfreeof the end of lever v279 thus permitting i' leve r.f279 to 'respond to the pull of its spring 282 thereby ``bringing flever'. 279 into contact with a start-stop .cam

.283.r`i'Atvthezsame time, lever.274, through the articul'a'tion ofjits'arm 277 with arcuate slotl 278 of leveri279,

-will..'be act'uated'counterclockwise to disengage its arm `'C2751f'r`or`nftli'e start-stop disc .276, thereby nitiating the Frotationzo'f sleeve 26.

.'Uponthe -rotation-of sleeve26, the cam 276 thereon `ywill,'.p'lerm'it `the'periodic closure of contact269, and cam 2 83'-willcooperate. with the cam follower portion"284 of 'Jarm' 277.to return lever 279 into 'blocking-relation withfarmature lever 51, and if lever.51 is actuated'to'its m arlting;'pfosition, the lever 279 will remain in the posi- 'tiorishoiwriv in `=F'IGS. 14 and 15. Also, upon the rotation ;'ofyfsleeve'26, the selector cams 32, the armature'extensionjlok'flever cam 285 and-the function clutch trip thereby holding bars 71 to 75 clear of code bars 61 to- 1.0 cam..286 will be rotated-Itherewith (FIG. 4). The rotation of cams '32feffect :the selective operation of selector levers 27 and cipher levers 38 in the lmanner jdisclosed in copending application Serial No. 513,374 filed December 8, l943, in `vlthe name of A. 1-1. Reiber, de-

ceased. The cam 285 controls the operation of a lock lever (not shown) in the manner disclosed in H. L. Krum Patent No. 1,783,382; and the cam 286 functions to control a clutch trip lever 287 to render a clutch 288 operative, in the manner disclosed in W. J.A Zenner Patent'No.2,339,313.

Since` the bell crank lever 274 is carried on the orientation plate 261, it is movable therewith sovthatas the,`

plate 261 is rotated, the pivot 266 for'carrying lever 274 will revolve about shaft 24 in a planetary manner, and since the distance between pvot 266 and vthe apex of cam 273 in the stop' position as shown in FIG. -14 is invariable, the stop position of cam 273 may 'be -varied by the mtation of pizze 261 as shown in PIG. 15. Be-

cause of .the fact that the disengagement of bell crank 274' is Controlled by the release lever 279 in all` positions of lever 274, the arcuate slot 278 is provided which is of appropriate conformation to compensate fot the movement of said lever.

Although a preferred embodiment of the invention has been shown' in' the drawings and described'in the 'foregoing specification, it will be understood that theinvention is not limited-to this embodiment but is capable-'of -modificaton and rearrangement without departing'from the spirit of the invention and within the scope of the appended claims.

What is claimed is:

1. In a telegraph printer, a type carrier movable from anormal position in either of two directions,.a:plurality of pairs of stops for said carrier for enabling varying degrees of movement thereof in either direction,:rmeans operablein response to signal code com'binations'to'select a predetermined pair of said stops, type Lcarrier' mounting means comprising a plunger and plungeriguiding means therefor, positive means'cooperating -with'said-yv plunger to hold said type carrier in `a fully retracted position, spring means normally tending to impartsshift' ing movement to said type carrier, periodically operated cyclic means effective upon said positive means to permit the actuation of said spring means to enable a predetermined amount of movement of said type` carrieras determined by a selected pair of said stops, platen means controlled by said positive means adapted to'cooperate with said typecarrier to effect printing, single'pawl and ratchet means for moving a recording medium one char acter space for each printing operation, and sensing means comprising a probing instrumentality forenabling said single pawl and ratchet means to automatically move the recording medium an extra space uponthe'iprinting of every predetermined number of characters thereo.

12. In a printing telegra-ph apparatus, a type 'carrier,

' type character mounting means comprising a plunger and carrier comprising a pair of springs disposed'fsbstantially in the same plane and Veffective on opposite sides ofsaid type carrier, said Springs connected to said plate,

whereby said type carrier is rotatable independently of the plate and 'spring arrangement, means 'for"'securing the other. ends of said springs to the frame of lSaidfap- 11 i 12"; paratus, and periodically operated cyclic means effective termined amount of translational Vmovement of said type upon said positive means to enable the actuation of-said carrier as determined by selected ones of said second spring means tocause a predetermined amount of tranS- set of stops. vlational movement of said type carrier as determined by 4. In aprinting telegraph 'receiven printing mechaselected ones of said second set of stops. nism, a single pawl and ratchet spacing mehanism co- 3. In a printing 'telegraphapparatua a type carrier, operable with said printingv mechanism Ato effect singlemeans for'imparting rotational and translational move' and multiple spa'cing of a recording medium, reciproeatments to said carrier, a first set of stops for governing ing Operating means for said spacing mec-hanism, and a the extent of -rotational movement of said carrier, a sec sensing means comprising a peripherally notched disc in' ond set ofvstops for controlling the extent of tranSlategrally relatedto said ratchet and a probing means co" tional movement of said carrier, means opera'ble in reoperating With said disc to enable said single pawl and f sponse to signal code combinations to select predetera ratchet spacing mechanism under control of said operatmined ones of said stops, type carrier mounting means ing means to automatically move the recording medium comprising a plunger and plunger guiding means t-herean extra space upon the printing of every predetermined for, vpositive means cooperating with said plunger to hold 15 number of characters thereon. said type' carrier in fully retracted position, a plate i .i swivelly mounted` on the end of said -plunger opposite References Cited by the Examiner` to sala type vCartier, spring means normally tfindine to a UNITED sTA'rEs PATENTS impart shifting movement to said type carrier comprising a' pair of springs disposed substantifllly in'ihe Same v emer "7' a plane and effective on opposite sides lof said plunger,said 4'765' 2/46 I; mn I Sr' 2 springs connected -to said plate, whereby said shaft is ro- 2'39 i i l age m 17 *z tatable independently of the, plate and lspring arrangement, means for securing the other ends of said Springs NEIL C' RAD' Primary Exmmer' to the frame of said apparatus, and periodically operated NEWTON N. LOVEWELL, JAMES E. KEELY, HIL cyclic means effective upon said positive means to enable LEL MARANS, Examiners. 'i *i y the actuation. of said spring means to cause a pre'de-` p UNITED STTEJ -PATEM o1'1-nzl, 1 i "CERTIFICATEOF.CoRnEcTIoN Patent' No. 3,210,471 ocmber 5'., 19

Theodn'f'fnvr. `Pyfflcki` It.. sie hereby .Certified that ex or appears above numbered pet-E z T ent requiring'correcton and that the said Letters Patent should neades i cor'rectedlbelow.

i Col'u'mn 2, line 34, strike out "now U. S. Patent; No.- i 2,8,02`,`4'63"; column. 5, line 18,` for "springing'fread* vprlnting line 63 for ''followingH w read -,fol1ower lcolumn l0,'- line 49, after "printing"v nsert a lin'elS IfOrW'thereO" read thereon i I' Sgn'ed and sealed this 13th 'day of September 1966. l

(SEAL) a.

Atte t ERNEs'rwqsmnEn W 'EDWARD JQBRENNE R Commiseioner of-Pntente

Claims (1)

1. IN A TELEGRAPH PRINTER, A TYPE CARRIER MOVABLE FROM A NORMAL POSITION IN EITHER OF TWO DIRECTIONS, A PLURALITY OF PAIRS OF STOPS FOR SAID CARRIER FOR ENABLING VARYING DEGREES OF MOVEMENT THEREOF IN EITHER DIRECTION, MEANS OPERABLE IN RESPONSE TO SIGNAL CODE COMBINATIONS TO SELECT A PREDETERMINED PAIR OF SAID STOPS, TYPE CARRIER MOUNTING MEANS COMPRISING A PLUNGER AND PLUNGER GUIDING MEANS THEREFOR, POSITIVE MEANS COOPERATING WITH SAID PLUNGER TO HOLD SAID TYPE CARRIER IN A FULLY RETRACTED POSITION, SPRING MEANS NORMALLY TENDING TO IMPART SHIFTING MOVEMENT TO SAID TYPE CARRIER, PERIODICALLY OPERATED CYCLIC MEANS EFFECTIVE UPON SAID POSITIVE MEANS TO PERMIT THE ACTUATION OF SAID SPRING MEANS TO ENABLE TO PREDETERMINED AMOUNT OF MOVEMENT OF SIAD TYPE CARRIER AS DETERMINED BY A SELECTED PAIR OF SAID STOPS, PLATEN MEANS CONTROLLED BY SAID POSITIVE MEANS ADAPTED TO COOPERATE WITH SAID TYPE CARRIER TO EFFECT PRINTING, SINGLES PAWL AND RATCHET MEANS FOR MOVING A RECORDING MEDIUM ONE CHARACTOR SPACE FOR EACH PRINTING OPERATION, AND SENSING MEANS COMPRISING A PROBING INSTRUMENTALITY FOR ENABLING SIAD SINGLE PAWL AND RATCHET MEANS TO AUTOMATICALLY MOVE THE RECORDING MEDIUM AN EXTRA SPACE UPON THE PRINTING OF EVERY PREDETERMINED NUMBER OF CHARACTERS THERETO.

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