US2273910A - Printing telegraph apparatus - Google Patents

Description

- 1942. c. w. SWAN 2,273,910

PRINTING TELEGRAPH APPARATUS Original Filed July 5, 1940 2 Sheets-Sheet 1 FIG. 1

Q f 3 I8 o o O I 0 55 26. 0' r 0 52 I 9 53 I 38 I5 96 95 INVENTOR CARL w. SWAN FIG. 2

I BI/ Z 06 ATTOR Y Feb. 24, 1942.

PRINTING TELEGRAPH APPARATUS Original Filed July 1940 2 Sheets-Sheet 2 FIG. 3

u Ill I ll VII/II.

INVENTOR CARL w. SWAN ATTORV EY V c. w. SWAN 2,273,910

Patented Feb. 24," 1942' v I 1 2,273,910

wea

F1 ij i ie p csr1w; Swan, ChicagoQIlL, asslgnor to Teletype i "Corporation; "Chicago, 1115; a corporation of "origin l application July 5, 1940;s ria N6. 244,098. Divided and this application Decemtel-23,1940, Serial'N0. 371,353 v {100mm, (C1'.164- '113- ff' V t,

present invention relates generally 'to Fig. 4 is a sectionalview taken substantially perforating apparatus and more particularly to on line of Fig. 3; A improvements inlperforating' elements therefor. Fig. 5 is anenlarged sectional view of a pr-. This application isa division of application tion of the punch block; I a Serial No. 344,098, flled July 5, 194 p j Fig. 6 is an enlarged 'plan view of the die Th primary objector theinvention is to proplat e according to the present invention;" 1 vide in a-periorator' for producing controltap'e Fig. 7 is an enlarged planviewlof a strip of having lidded apertures; meansior leveling the printed ta pe perforated in accordance with the hingedlid upon its ejection ifrom the, ,d ie plate. method'of the present invention;

pn' \deviees flthe type according to the ig. 8 is-an enlargedsectional view taken 'on present invention have been arranged'to out out line 8- -8Fof Fig. 7;

the perforations completely at a singlefmove; Fig. 9 -is a view of the-selector magnet parment, therebyfproducingchadsor pieces of waste tially deleted from Fig; 3; material which often presentfdiflicult problems Fig. 1 0 is aview similar to Fig. '5" showing of disposal." Toavoidthenecessity of dispos 1;! punchlelements'in operated position; and I ing of this waste material by preventing its Fig. 11 isanjenlarged 'perspetive-vview ofa formation, the present" invention"p ro'videsf a portion of the signal control strip, produced acperforating arrangement whereby the perforacording to-the present invention; to show a tiO'llS are not completely cut out; but the. chads lidded aperture.

' arepermitted to remain attached to the "perfo- Since the 'disclosureherein set io'rthis in the rated material (for "example,tape'),the preferred nature of an improvement'of the printing telearra'ngement being such that the punches are graph receiver disclosedin UQ S. Patent 1,745,633,

utilized "to so pierce the "material as to leave "an t or similar printer mechanisms operative to propuncutportionwhich servesas ajhinge', thus rea erly select thevarioustype elements, move the' suiting in'f'a hinged lid which will yield to the tape'iorward, move and reverse the inking ribbon sensing pins in a telegraph transmitter when the (as-on a "standard typewriter), and shift the tape is employediorautomatic control ofsignal platen for figure case characters, only so much transmission y V v of the-mechanismof said patent will be herein- To enable the preparation of signal control after set forth as is necessary to an understand-' tapein accordance'with the resent invention, Q inn; of the pr s n inv n i n- Ref' r n m y thelpunchblock is modified by having; a portion be'had to saidpatent for a full understanding of the metal of the'die plate surrounding each of theprinter mechanism not described hereinhole removed, which permits the corresponding after in detail.

edge of the resultant lid to remain uncut after The Present invention provides perforating operation the punch; :Inorder t t t i mechanism adapted for" association with a may be freed from the die platevto permit ub-, Pu r the p rpose of whi h is o p ra e sequent advancement of the tapeladvancing Withthe printing mechanism in such a manner mechanism, a stripper or ejector, guided'by the 5 t p o ate a tape so as ,to provide lidded die plate and a bracket mounted; thereon and u es printed message correspond 3 embodying the present invention;

operated by a compression spring, is, provided ,0 to the Perforated record pp s n a d p for each punch in the punchblock; i i e tly'overthe hinged lids and remains .fully A more complete understandingof'the forereadablepresent invention, of o i going objects and features'of the invention may not limited to type pr ilfer vexemplifi y be had from the following description when the n io ed patent butany prmtr to t conjunction t t c qm a which the invention is applicable is contemdrawings, wherein like r'eierence characters in- -D ddicate'thesame parts throughout, and wherein: disclosed the above-mentioned Fig. 1 is a perspective'view of the'apparatus' t e pla en' l l (Figs. 1, 3, and4) over which the paper tape passes from right to'l'el'tis located Fig. 2 is a sectional view of a keyboard-perm; in the front and centralpart of the apparatus.

' t br i c rtain features of theinven However; the platen used in this invention is of on; k diflferentfconstruction, comprising as will herefig a planwiewpf the apparatus'shown' maiterappea ,a cylindrical plunger carried in 1mg; w certain parts plrokgnl away a rectangular block and shiftable in the manner clarltm 7 5o set-forth in said patents r spool only of which is shown be pulled notches in the'code function; As indicated atlng bars IQ are articulated to the type bars ,|2'

responding in number driven by a main Arranged above the platen H is the ribbon feed mechanism indicated generally as 19, the left in Fig. 1. The ink-- ing ribbon I is directed in well-known manner over platen II from one spool tothe other; automatic ribbon reversing mechanism also being provided. Type bars 2 are positioned to the rearof the platen and are arranged for striking for- 1 wardly and downwardly. Just to the rear of the typebars |2 is a series which in the present instance are substantially semicircular inshape. Actuating bars l4 for operating the type bars l2 are located immediately in front of the code bars |5, and are adapted to selectivelyaligned for a particular character or in said patent, the actuthrough a gear and rack means, The selectin for selectively operating 'thecode bars It isn't the swordand-T type, fully disclosed in said patent. Briefly, this selector mechanism comprises a selectingorreceiving electromagnet' l1 (Figswl, 3 and '9),-the armature lever I! of which comprises a selecting arm |9 having abutments 2% and 22 which co-operate 'withabutments 23 and 24 of a series of swords25. The armature lever I8 is responsive under certain conditions to the energization of themag'net I1 of notched code bars l5 one ata time 'into the alignment of bars l5 when the notches are:

a 92, carrying its associated and 48. Accordingly,

' operates with.

(for example, upon receipt of marking or. current impulses) and under other conditions to'the pull of a spring 26-:(for example, upon the receipt, of no current. or spacing impulses), the tension of spring beingadjustable by-means'of screw 21. The swords 25,'of which there is a plurality corto the series of] code bars It, are brought into operative engagement with the selector arm l9 by their individual operating 28 pivoted on a common pivot rod 29. Swords 25 are pivotally articulated by asocket connection to their individual levers 28. Each of the leversj28 is provided with an arm 3| and is normally biased in V thepivot29 by a spring 32. Arms 3| co-operate with a series of helically arranged projections 53 on a selector cam drum 34, which'is frictionally operating shaft located in a perpendicular position right of the code bars IS. The main operating shaft 235 is driven continuously by a motor- 55 through a pinion 31, secured to the motor shaft 52, which pinion meshes with a gear (not shown) oper'atively associated with shaft 35. A

As fully described in the aforementioned pat ent, the cam drum 24 isinitiated into rotation upon receipt of a starting impulse which causes the de-energization leasing the armature lever I8 which then responds to the pull of spring 26 to rotate the lever it in a clockwise direction. Upon this movement, an eccentric screw 4| (Fig. 9) co -operates with a plunger 42 which acts .in the mannershown in Fig. 5 of U. S. Patent No. 1,884,743 to release, through alever arrangement, a stop arm .(not shown) to initiate rotation of cam 34; I g

The speed of rotation of selector cam drum '34 is synchronized with-the speed of code impulsing so thatas the armature lever at the rear and to the of the magnet thereby re I8 is operated in response to received impulses, a cam 33 acts upon for example, if abutments 2| and 23 co-operate, then the sword 25 will be swung in a counterclockwise direction and will assume the position shown in Fig. 3. ments 22 and 24 co-operate, then sword 25 will be swung in a clockwise direction to assume the opposite position. After the sword 25 has been set in accordance with the nature of the signal impulse and the cam 25 passes out of operative engagement with arm 3|, the lever 28 will be actuated in a clockwise direction by its spring sword 25 along with it to impinge the sword 25 against arm 43 or 44 of a T-lever 45 pivoted at 46, thus rocking the T-lever 45 in a clockwise or counterclockwise direction. Each of the T-levers 45 is pivotally articulated to a code bar It so that when a T-lever 45 is actuated in a clockwise or counterclockwise direction, its associated code bar is actuated leftwardly or rightwardly, respectively, on studs 41 v with the selecting mechahim just described, the code bars l6 are set selectively in their rightward or leftward positions in response to the impulses of a code signal.

As described inPatent 1,745,633, thesetting of the code bars I5 is maintained during the printing operation by "a detent or locking means. Ac-

cordingly, a locking bar 49 is provided which cobeveled notches 5| on code bars l5. Bar "49 ispivotally mounted andfis moved into," and out'of engagement with the code bars It as the striker bar .or operating bail 52 israised and lowered. Thebail 52 is operated by a cam (not shown) on the main shaft 35, in a manner described in Patent 1,745,633. Whenthe bail 52 is in its lowermost position, it co-operates with the beveled edges 53 of the bars l4 and 49 to hold such bars out of engagement with the code bars l5 so that the code bars It may be readily a clockwise direction about itsassociated lever 28 torock it counterclockwise (as viewed in Fig. 3) to bring its sword 25 against selector arm i9. Sword 25 will be swung clockwise or counterclockwise, depending on whether abutments 2| and 23 or 22 and 24 co-operate;v

.shiftedin accordance with the operation of the selector mechanism. When the ball 52' Is'operated upwardly to perform a .printing operation,

the bars [4 and 49,' due to the beveled edge 5:,- are permitted gradually to be actuated toward the code bars It by their individual springs 54. The actuating bars H are provided with a hook portion 55 which co-operates with the bail 52, which in its upward movement engages said hook 55, to lift the actuating bar II, which through the rack and pinion engagement with the type bar causes the type bar to rotate about its pivotto bring the type face downwardly to impinge upon the platen The locking bar 49 is not pro-. vided-with a hook portion 55. Its function is merely to rock-on its pivot toward and away from the code bars I6 under the control of the bail '52 to lock the code bars l6 in their set position during the printing operation.

According to the present invention the locking bar 49, while held in its position away from the code bars II when the ball is in its lowermost position, co-operates with a series of bell cranks 56 (Fig-'3) to hold said bell cranks in counterclockwise position. 'Bell cranks 56 are provided with shouldered portions 51 through the, instrumentality of which the bell. cranks 56 are permitted or prevented by code'bars I6 from rotating to their clockwise position. That is,

; if anyone of. the code bars I6 is set in the posi- 'tion indicated in Fig.3, and the locking bar 49 is permitted to' enter the V notch, the bell crank 56 associated therewith is blocked through the impingementof'shoulder 51 upon theend of the associated code'bar I6. Onthe other hand, if a code bar It assumes its leftward position, the bell 0n the other hand, if abutcrank a t ic insl' which, nt into corresponding notches in; a series ofinterponents,; 681 (Fig; "4) whereby the v T bell cranlr levers ,fiiarepivotally articulatedito J j I the interponents 68, Interpo n ents 88 are slid ably arranged in a cradle 89 pivoted at II to the .bracket 68 and-are providedanearthe left-hand,

v or marking crank? 93 a sented therewith would not be ant-a510 follow the move ent or the ioenngybarn; he

I viewed inll ig, litis observed that there is profvideda' bell crank 58 for each 'of'the code bars". I I I II I can vliicarried on the Ixnain operating'shaitfffl.

A SI actsupon lever!" to lioldcarn roller v Co operating with esteem be1l .cranks u ends of levers SUcc-Operatewith ,is a'verticaljlever 58 pivotedpn a common stud end of each oi'thelevers fl co operates withfan armiof;its,associated' .bell crank 5's. 'Thelower I] n, writi g lever is is pivotaily mounted a pivot; rod II supported in Inns 92 and 98 of bracket 83. Asviewed in the operating lever I9 ispr'ovided with an extension Matthe {extremity O which is mounted a'cam follower roller-I 85 whichco-operateswith the operating .85 against the peripher of cam 88. I

Supported in the bracket L63 isa punch block 1 indicated 'gene'rallyl as 91 in which carried va a icorrespondinggseries of lbeil 6 I T pivotallv carried on 'a co to plate; fiheiserieslof bell cranklevers I A 8 I i co bperatjes w ith. a corresponding series of bellflcrflnk tleversf 8 5, fpiv'otally supported on; a a pivots'tud QBYsecuredtoQthe bracket 83, 'I'he hell 1' mm'on shaft 62, Levers", and SI arepivotally'iinounted o'na. bracket 83 secured crank flevei'sj 65 are' normally ur'ged in' a fewerxw serdi tmn bymdiv u ls cs t ime leassociatedfwith the ,bell crank levers springs f ascend; serve iinpa'rt pthrouhitheirgco-operat'ive, relationshinfrbtationai movement to levers 6 I, u a'r'id 556, The; depending ,arms of "hell levers 65 are providedQwith enlarged por uppertedge with a cutaway.'portion=;-I2 adapted "series ,,of punch elements 13. Each of the punches I3 ,is providediwith an enlarged section I I 8 I the, upper edge of which co-operates with a stripper niemherv Inland the lower edge of which 1 co operates with a'backstop plate I03. I Stripper \inernber I (is urged downwardly by springs I, tothe're y hold the punches" in their lower positions free fthedieplateJiISL As shown in the enlargedsectionalview,Fig. 5,'the P 19 1 I3 is shown fitted into a guide plate 88 withits'upper face slightly; below thefuppersurface f said guide"platei jDisposed above the-guide plate" 88Iis the die plate I05," shown in plan view 'in' Fig. fiu j' Ihe die plate I 'i's so sheared along edge I88 as remove a" portion of the metal surrounding each ofvjthe, holes I I01 and e I08 holes I01 'being representative ofj'the code punch holes andwhen the' die' plate I5 is arranged above the die plate t ajasfshownlin Fig.5, the punches 13, when 1 operated upwardlyvinto co oper'ation with the tot-clear associatedpunches'n whemsaid inter .ponents -are int "at-icertain operative, position. I Interponents 68 terminate atfthe left'ends there of "with an enlarged portionll wherebytthey are Y adapted to co-operatewith the punches" when die plate I95 "(a di a e i P e 0. Wi lem raway only'a portion ofvthe tape rnaterial, leavingasn allhingetpcrtion H0 at the le ft -side of p the punchuncut (as viewed in Fig, 7), thus fore-- f M ing the partially perforated lid, formed by each the interponents 68 are operated-to their rightward position; as viewed in Fig. 4; Cradle 68 is provided with a projection anism. 1 when 3; the interponents 88 assume their rightward positio'n'.-' Conversely, when the bell I adapted toc'oopere I I ate with a feed' holef punch 1 (not shown) to invariably perforate a -tape feed hole'in. theta'pe I24 for each operation of the peri'oratingx'nechthe bell'crank levers 56 "are" held in their counterclockwise" position shown Jin'f' -,punch;;,upward ly into the diefplate holes. During the punching operation, a slight -ptearing or shearing occurs at the point I (Figs. 7 and 11) I of the hinge IIii (Fig. 10), as well as "a very slight are arranged to -be guided at their lower ends by crank'leverstras'sume theirfclockwise position,

1 interponents 68 assume 'their' le'ftward or spac.

'ing position, as shown in Fig.4.

pivotally connected an extensible 'link indicated generally as It one end of link 16' being pivoted at I! .to arm 15 and the other'en'd of link 18 being pivotally connected at 18f toa perforator-operating lever 19. In-thep'res'ent" form of the :oted at 'llito' slidably connected and adlus'tably mounted on t readily adjustedby loosening the: clamp screws 88 I? and and inserting a screwdriver or similar instrument betweenthe lugs 81 and 89 or 88 and lengthened er shortened, and twisting'saidflin strunientuntil the proper 'lengthis attained. whereafterthe clamp screwsare tightened.

I r ia xtfi ;"km? v- 563mg upwardly, to the extremity which is -I inventiomthe linkli' comprises one part 8| piv 7 arm and a part pivoted at 18 f I'totheoperating lever 19. Parts 8I and 82'are' 8,9;qdepending; upon whether linkli' isjto be stretching of thetape material. To-eject the hinged 1m thus formed from the die m te, wa

,strippertn einber-Iiis is provided to co-operate with each punch ll. Strippers or ejectors I09 the die plate I05 and at their upper ends hy .a

'Z shapedbracket, I I I attachedto the. plate I05,

and; a compression,sp ri ng H2 is provided for each ejector I89to urge the ,ejectors I09 downwardly, The ejectorsllll when intheir downward position are adapted to'extend slightly below the die platesIIlS so as to insure the ejection ofthe hinged lid produced in thelmaterial or tape worked upon,- After ejection in this manner the "hinged lids are' slightly in relief, as a result of which the-uppersurface ofthe tape may-be readily determined.=; v I

t Itis understood; that the resultantposition of the lid I25 withrespectto thestrip I24 is dependent upon the properties of the material'of which the strip iscomposed, aswell as the'thickness thereof-.; For example, in a paper strip; the lids I28 take the form or position substantially as shown in Fig; 11-, due to the inherentchar- 's'i'cteristics of the paper, "such as thinness and I resilience. Asthe quality of the material worked upontends toward softness, the lids I25 assume 'aposition in'relief, substantially as shown in Fig. 8, wherein the plane fofthe lid I25 would tend towardparallelism with the plane of the (The tape, after I being partially perforated in this manner, passes over a tape feed roller II3 'ole I88 representing the feed punch hole.

which is provided with a series of spaced feed Ill adapted to co-operate,

" pins or projections with the 'lidded feed holes formed by the feedvided with a series of toothed grooves I Ii thumb portion may be rotated manually jeither clockwise or Therefore, toperform a backrotated clockw rations corresponding thereto.

punch and die plate. The feed roll II3 is pro- Y which co-operate with a tape feed pawlll I6 pivotally carried on the cradle 09 in well-known manner.

Fixed to the shaft to which the feed roller III operates with a'detent member I I8, pivoted at I II to the bracket 03, having a spring I2I which urgesthe d'etent roller .into engagement with the stanwheel'l I1. Fixed to the star wheel II1 is a I22, whereby the-feedroller III spacing oruratiorr. the thumb portion I22 is so asto move the taperightwardlypaaifliwed in Fig. 5. in order that the counterclockwise.

perforated tape may be readily moved right wardly for a,-ba ckspacing operation, each of the ejector members I is provided with a wing portion I having an inclined lower edge, so thatas the. tape is moved rightwardly, any of thehinged L lidsv which'may be projecting upwardly at an angle will "be cammed downwardlyby the wing portion I23so as to clear the die plate I05. In Figs. 7, 8, and 11 is illustrated a portion of the tape printed and/ or perforated in accordance V with the present invention. The tape I24 is perforated in such a manner that the lids l25 are is raised to rock lever I16 about its pivot I11 "is securedis a star wheel II1 (Fig. 1) which co the opening provided therefor. As shown in ,7, the'printing appears directly over the "I; hinged lids as if the tape had not been perforatedandis readily legible. In the specific embodiment' of the invention herein shown, the H perforated codecombination is six steps in advance of 1 the corresponding printed character.

That is, the code'combination represented by the transverse row I26, Fig. 7, corresponds to the letter Q in the work quick. Of'courseit is understood-that if a wider tape is provided, the characters printed can be printed adjacentto the transverse row of code combinations of perfo- It is conceivable that tape havihg prepunched feed holes would he desirable under certain conditions. In this event,

the feed hole I (Fig. 7) would be indicated as fully perforated instead of being provided with ahinged lid.

As indicated in-Fig. 1 each type bar I2 is provided with two type faces, thus necessitating a case shift mechanism, which comprises means- I i.f ,or shifting the platen II.- As shown in Fig. 4 ,r-theplaten II is illustrated as consisting of a {cylinder capped-with a hard rubber (or other suitable) printing surface, Platen II is removably-held in a block 99 slidably mounted on a shaft I00 which, in turn, is slidably supported inbrackets 03 and I21. Fixed to shaft I00 is a collar I20 against which the block 99 is held by a spring I28 surrounding said shaft andcompressed between block 99 and a shift arm' I29 also fixed to said shaft. Block 99 is slidable rearwardly on shaft I00, through the instrumentality of an arm; I30-fixed thereto, against the action of spring I20, to bring the platen II from beneath the tape and inking ribbon, so thatsaid platen thereby becomes accessible for ready re- 'movability and interchangeability. The platen -figures position. To return platen II to the letters" or unshift position (shown in Fig. 3)

the actuating bar' I15 is selected, which when raised by bail 52 rocks lever I8I about pivot I02, and in turn rocks member I83 about its pivot I" to actuate shift arm I29 rearwardly until arm I29 is again latched by end I18 of lever- I10. It is manifest that platen II is shiftable under two operating conditions, one selectively in response to received code signals to shift or unshift positiongand the other manually through theinstrumentality' of arm I30 to render the platen II accessible and interchangeable.

1 GENERAL OPERATION In the operation of the apparatus according to-the present invention, .the motor 36 is considered to be running continuously, and thus rotates the main -operatingshaft 35. Carried on the main operating shaft 35 are sleeve members rotatably associated therewith through clutch members asdisclosed in Patent 1,145,633, which sleeves are normally held against rotation. The selector magnet I1 is normally energized so that upon the receipt of a start impulse of spacing nature, the magnet I1 is de-energized and its armature lever I0 is released under thetensionof spring 26 wherebythe stud 4| thereon urges the plunger 42 leftwardly to release through a series of levers (notshown) the sleeve members on the shaft 45 for rotation in timed relation to each other. As indicated in the Patent 1,745,633,

.the cam drum selector 34 is released'for rotation so that the cam projections 33 thereon operate levers 28 in. such a manner that through the cooperation of selector arm I9 therewith the swords 25 are caused to abut said arm I9 and are actuated to one or the other of their selective positions. The operative relationship of the abutments on the swords 45 and selector lever I9 are determinative of the positions of .said swords tooperate the IT-levers 45 to one or the other of their operative positions, the T-levers in turn actuating the code bars It to their rightward or leftward position in accordance with the received code combination. 7

In timed relation with the rotation of cam drum 34, the sleeve carrying the cam (not shown) for performing the several functions of the printer and the operating cam 98 is initiated into rotation. The cam (not shown) operates through mechanism, not here shown but described and shown in said Patent 1,745,633 to reciprocate the bail 52 which, on its upward movement, permits the actuating'bars I4 to respond to the pull of their individual springs to be urged intoengagement with the code bars I8, one of these actuating bars finding an alignment of slots or s to be actuated leftwardlyto mate the code tars, I6 nd time traveling or rotating farther so as to bring its hook portion 55 into the path of the bail 52, so that the bail 52 in its upward movement, picks up the hook portion 55- and raises the selected actuating bar to effect rotation of the type bar I2 associated,

therewith through its rack andpinion connec-.

tion. The type pallet on'the type bar is.

therefore caused to impinge upon the. platen II to print a character on the "tape interposed therebetween.

Simultaneously with actuation of the type bar, I

for printing a character through the operation of the actuating bar I4 by bail 52, the locking bar 49 is permitted to respond to the pull of its spring 54 sothat the upper edge of the lock- 1). ,However, when any one of the. code bars I6 is in its rightward position,the shoulder "51 of lever 56 will strike against saidcode bar and the corresponding bell crank-lever 56 will be blockedagainst movement. Therefore, the'levers 56, bell crank levers 6| and 65, and interponents 68 associated therewith will haveino motion or movementimparted thereto andwill. assume the position opposite to thatshown in Fig. 4, that register with thepunch I3. However, when any one of the code bars I6 is in its'leftward posi-' tion, the shoulder 51 of lever 56 will not be blocked by its associated code bar I6 and will be permittedto rotate in a clockwise direction under the action of spring 61 through theinterconnected levers 65, 6|, and 58. This movement will cause the interponent 68 (Fig.4) associated therewith bring the portion I4 of the interponent 68 out 'of register or alignment withthe punch I3. In proper'timed rela-; tion with these operations, the team 96 for oper? ating the perforator will actuate th'eperforating' lever 19 clockwise, as viewed in Fig. 4, so that, through the link 16, the cradle 69 will be rocked clockwise to bring all of the interponents 66, which have not been moved, into engagement" is, with the portiton .14 of interponent 68 in .with their respective punches 13, thus urging said punches upwardly through the tape. As the cradle 66 is permitted to rockbackward to its counterclockwise position, the stripper plate I04 acts towithdraw the punches I3, andthe ejectors I09 act to expel the hinged lids from the die plate I05.. Thus, there is produced with, the present invention a printed and perforated tape, as shown in .Fig. 7. I

I j Modification v The present invention is applicable to a keyboard perforator such as isindicated in Fig. 2. The keyboard perforating device illustrated is of the type shown in U. S. Patent 1,965,572,.and Fig. 2 corresponds to Fig. 4 of said patent. Although associated a perforator mechanism indicated generally as' I32, and a transmitter mechanism indicated generally as I33. Supported in said housing on bearings I34 and I35 isa key lever pivot rod 136, ,on' whichare pivotally'supported at levers I31, whichat their rear extremities key their forward ends are provided with keytops I40, as indicated in Fig.1, key. levers I31 and, disposed transversely thereof are a pluralityof pairs, of code bars I38. Each pair offcode'bars I38 is supported at each end ona- T-shaped lever I39. QEach horizontal arm provided with 9, lug I, the lugs JI 4| of each fr-lever I39 being oppositely directed so that each lug llI supports a code bar of each pair. T-levers I33 arerockable about pivots I42. The bars of each pair of code bars I38 are complementary; that istosay, each bar is coded oppositely to its companion so that the high portions of onebar 'are opposite the low portions I43 of its companion bar. The connection between the code bars I38 of each pair is such that the simultaneous depression of more I than one key lever is prevented. If an attempt is madeto operate simultaneously more than one keylever, the key levers can only be depressed part Way when'they will befblockedby the high portions ofthe code bars I38. Connected to the depending portionsof' each of the rocker arms or T-levers I39 is a longitudinally movable per.- mutation bar I44. j t t The perforator disclosed in Fig. 2 comprises a punch block, constructed as shown in Figs. 4 and 5. The, distinguishing feature between the punch mechanismshown m Fig. 2 and that shown in the embodiment of the invention disatively associated witheach of the punch interclosed in Fig L'is that in the former the punch mechanism is magnetically operated. The punches I45, (Fig. .2) are selectivelyoperated by an actuating member or hammer I through the instrumentality of interponents' I 41. Operponents I4! is: connected to the'permutation of'a link I49., Thus, pon the permuted setting of the permutation bars I44, the punch inter-t ponents I41 will be set correspondingly through the movement of the link I49 and the pivoted arm I48associated therewith.

The hammer I46 rocks about its pivot and forms the armature of an electromagnet I5I.

The interponents I 41 are moved back and forth along the face of the hammer I46, and, depending upon their selected position, the associated punch I will be operated. In addition to the several pairs of-codebarsl38, there is provided anadditional bar (not shown) which is operated by the ke'ylevers' I31 invariably, to cause through its, associated permutationbar I44, link I49 and a lever I48, thefclos ure of ,a contact I52, which is connected in the operatingv circuit for the Fig.2 illustrates also a transmitting mechanism The perforator indicated Y electromagnetically operated 1 type, as distinguished from the mechanically opelectromagnet I5I. Upon each setting of the permutation bars I44, the electromagnet I5I is energized, and the punch hammer'l46 will be rocked. clockwise to form a transverse row of perforations in the tape I53i corresponding to Y the permuted setting of the punch interponents I41. Also, foreach operation ofthe punch hammer I46 and the punchesil45, a row of feed? holes, adapted to be engaged by thepin teeth of a'feedwheel I54, is perforated in the tape.

' The feed wheel. I54 is mounted on a shaft to which there is also secured a ratchet wheel I55 which is adapted to be engaged-by the pawl I56 secured to the end of the punchhammer I45.

I Arranged below the apivo'ted member I48 which is. bars I44 by means,

'gization' of the electromagnet' I5I.

erating portion to engage the next succeeding tooth of the ratchet wheel I55. Upon the de- 7 energization of the electromagnet I5I, the spring I51 is effective to cause the pawl I56 to move downwardly and thus effect the rotation of the ratchet wheel I55, and the corresponding rotation ofithe feed wheel I54 to advance the tape I53 to bring an unperforated area thereof in alignment with the punches I45.

The form of the invention in either Fig. l or Fig. 2 may have associated therewith a transmitting mechanism I33, in which event the permutation bars I44 are each provided with a forked member I58 (Fig. 2 Articulated to member I56 is a depending arm of a locking latch I59 piv-' oted on a common shaft I6I. In this manner, locking latches I59 are articulated to thepermutation bars I44 and are adapted to be rocked about pivot shaft I6I to either of two positions. Associated with latches I59 is a corresponding series of contact levers I62 for making and breaking individual contacts I63. Contact le- I vers I62 co-operate with individual contact cams on cam drum I64 mounted on the transmitting shaft I65, which is provided with a clutch mechanism I66 (Fig. 1) controlled by a trip member I61, as set forth in U. 8. Patent 1,965,572. The latter patent discloses the cam drum assembly I I64 and reference may be had to such patent for further details thereon. 'Trip member I61 co-operates with a T-lever I68 pivoted to bracket I69 and is co-operable with a universal bail III (Fig. 2) in the manner disclosed in Patent 1,965,572.

' In the operation of the transmitting unit, the depression of a key lever I3'I moves the bars I38 permutably in accordance with a predetermined code combination, the setting of which, through permutation bars I44, determines the positions of the locking latches I59. The rotation of cam drum I64 is initiated substantially simultaneously with the setting of the locking latches I59 through the instrumentality of trip member I61 which releases the clutch I66 for rotation, and a locking loop I12, controlled by a cam I13 carried on the cam assembly I64, is permitted to rotate in counterclockwise direction (Figs. 1 and 2) to lock the latches I59 in their selected positions. The setting of latches I59 determines whether the contact levers I62 shall or shall not respond to their associated cams on cam drums I64 to transmit, through contact I63, over a signal line to the receiving station, a predetermined code combination of signaling impulses. Incidentally, as is the usual practice, the receiving magnet II (Fig. .1) is included in the line circuit so that the printer of the home receiver will operate in response to the transmitted signals. The respective notches in the cams on cam drum I64 are arranged in a helical progression so that upon the rotation of the cam assembly I64, the contacts I63 controlled by levers I62 will be operated successively. The apparatus herein disclosed is operated in accordance with an equal length letter code, in which each code combination is a permutation of marking and spacresponding plurality.

ing conditions and is preceded by a start impulse and followed by a stop impulse according to the familiar start-stop system.

Although the present invention has been shown and described in connection with certain specific embodiments thereof, it is of course understood that such disclosure is merely illustrative and not restrictive, reference being hadto the appended claims to determine the scope of the invention, and all variations coming within the range of equivalency of the appended claims are deemed to be embraced within the purview of the appended claims.

What is claimed is:

1. In combination, a plurality of punches, a

die plate cooperating therewith having a corresponding plurality of holes, said di'e plate having a portion thereof so sheared off as to remove from each hole a similar segmental portion thereof, and a corresponding plurality of spring loaded electors carried by said die plate.

2. In combination, punches, a die plate therefor having a corresponding plurality of holes, said die plate having a portion thereof so sheared off as to remove from each hole a segmental portion thereof, whereby upon the co-operation of said punches and die plate a hinged lid is formed, and a corof spring loaded electors adapted to level said lids substantially into the plane of the worked material to facilitate shifting of said material between successive operations.

3. The method of forming lidded apertures in a signal control strip in coded manner. which comprises striking from the strip partially severed lids in coded areas, and leveling the partially severed lids substantially into the plane of said strip to render said lids yielding in code manner in response to mechanical sensing operations.

4. The method of forming a record tape in code manner which comprises retaining the entiretape in the record form and weakening the tape in coded areas to render it yielding in code mamier in response to mechanical sensing operations.

5. In a keyboard perforator, a plurality of key levers, a plurality of code bars displaceable in accordance with the depression of selected ones of said key levers, permutation bars controlled by said code bars, a plurality of punches, punch interponents controlled by said permutation bars, and a die plate so conformed as to cooperate with said punches to produce lidded apertures in a record strip in conformance with the operation of said punch interponents.

6. In a keyboard perforator, a plurality of key levers, a plurality of codebars displaceable in accordance with the depression of selected ones of said key levers, permutation bars controlled by said code bars, a plurality of punches, punch interponents controlled by said permutation bars, a die plate so conformed as to cooperate with said punches to produce lidded apertures in a record strip in conformance with the operation of said punch interponents, and spring-loaded ejectors cooperative with said punches to level said lids substantially into the plane of said strip to facilitate feeding of said strip stepwise.

'7. In a keyboard perforator, a plurality of key levers, a plurality of punches, punch interponents controlled by said key levers, and a die plate so conformed as to cooperate with said .punches'to produce lidded apertures in a record a plurality of circular V 2,273,910 strip in conformance with the operation of said punch interponents.

8. In a keyboard periorator, a plurality of key levers, a plurality of punches, punch-interponents controlledby said key levers, a die plate so conformed as to cooperate with said punches to produce lidded apertures in a record strip in conformance with the operation of said punch interponents, and spring-loaded ejectors coop- ,erativewith said punches to level said lids substantially into the plane of said strip to facilitate feeding of said strip stepwise.

9 The method of preparing signal control strips, comprising the steps :of'striking from a lid forming operation.

contiguous length of strip partially severed lids transversely of said strip according to a coded pattern, retaining the contiguity of said strip, and advancing the strip to present a suceeding transverse area oi the strip preparatory to the CARL W. SWAN.

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