US2490608A

US2490608A - Perforating apparatus

Info

Publication number: US2490608A
Authority: US
Inventors: Walter J Zenner
Original assignee: Teletype Corp
Current assignee: AT&T Teletype Corp
Priority date: 1948-03-18
Filing date: 1948-03-18
Publication date: 1949-12-06
Anticipated expiration: 1966-12-06
Also published as: CH282886A; BE487956A; FR982253A; US2545198A; DE838323C; US2648385A; GB669844A; NL82919C

Description

Dec. 6, 1949 w. J. ZENNER PERFORATING APPARATUS 3 Shets-Sheet 1 Filed March 18, 1948 R o T N E V W.

WALTER J. ZENNER BY 6 ATTORNEY Dec. 6, 1949 w. J. ZENNER I PERFORATING APPARATUS 5 Sheets-Sheet 2 Filed March 18, 1948 INYENTOR WALTER J. ZENNER ATTORNEY Dec. 6, 1949 w. J. ZENNER 2,490,608

PERFORATING APPARATUS Filed March 18, 1948 s Sheets-Sheet s Patented Dec. 6, 1949 PERFORATIN G APPARATUS Walter J. Zenner, Des Plaines, Ill., assignor to Teletype Corporation, Chicago, 111., a corporation of Delaware Application March 18, 1948, Serial No. 15,653

Claims. 1

This invention pertains to printing telegraph apparatus and more particularly to high speed telegraph tape reperforators.

For some time it has been sought to obtain a simplified telegraph tape reperforator in an effort to reduce the manufacturing costs. The reperforators in common use at the present time include a punch and die unit which requires very close tolerances in its manufacture, and consequently manufacturing costs are high. It is, therefore, an object of this invention to provide a reperforator wherein greater tolerances are allowable in the punch and die unit, thus reducing the cost of manufacture.

By this invention a high speed selector mechanism controls the selection of a plurality of punches in accordance with signals received by the selector mechanism. In the preferred embodiment of the invention the punches are floatingly mounted in slots in a stationary punch block. When the punches are selected in accordance with the signals received by the selector mechanism, the selected punches are caused to perforate a telegraph tape. Thereafter the tape is advanced simultaneously as the punches are withdrawn from the tape, which causes the punches to be moved pivotally until they are withdrawn from the tape.

In order to obtain a reperforator and selector mechanism capable of very high speed operation without excessive rotational speeds of the selector cam shaft a two cycle selector cam sleeve assembly and a two cycle punch actuating toggle are provided in a modified form of the invention. By this modified form of the invention a simple, high speed reperforator is provided wherein the rotational speed of the selector cam sleeve is effectively reduced.

Therefore, another object of the invention is to combine a high speed tape perforating mechanism with a high speed selector mechanism.

Still another object of the invention is to provide a reperforator having pivoted floating punches whereby the punches may move with the advancing tape.

Other objects and advantages not specifically recited above will be apparent and the invention will be better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings, wherein:

Fig. 1 is a fragmentary isometric view showing the principal features of the preferred embodiment of the invention;

frame removed for a better view of the features of the invention;

Fig. 3 is a detail fragmentary isometric view of the selector magnet and armature and the armature locking mechanism;

Fig. 4 is a detail isometric view of the punches;

Fig. 5 is a transverse view of a section of tape perforated by punches of the type shown in Fig. 4;

Fig. 6 is a fragmentary isometric view of a modified form of the invention showing a two cycle selector and a two cycle punching mechanism; and

Fig. 7 is a timing diagram of the various operations in the preferred embodiment of the invention.

This invention incorporates a high speed selector mechanism of the type disclosed in the patent to W. J. Zenner, No. 2,339,313, issued January 18, 1944. In the invention herein described a series of selector levers move to a permutation of marking and spacing positions depending upon the signals received by a selector magnet. When any of the selector levers move into marking position, cooperating selector interponents also move into marking position. Subsequent rotation of the selector cams causes both the selector levers and selector interponents to be moved to positions to set a corresponding group of punch interponents. Thereafter the selector levers and selector interponents return to normal position, thus providing for overlap. A punch bail engages and moves the punch interponents whereby those punch .interponents which are in marking position engage and in turn actuate corresponding punches to perforate a telegraph tape. The punches are held in position floatingly and pivotally by tension springs. As the punches are being withdrawn from the tape, the tape is advanced, and due to the freedom of the punches to pivot, they are carried along with the tape until withdrawn therefrom, and immediately upon such withdrawal they are snapped back to normal position by their tension springs.

Many features included in the disclosure of the present application are also disclosed and are claimed in the copending application of J. L. De Boo, Serial No. 15,592, filed of even date.

Referring to the drawings the punching unit is supported in a pair of side plates H of the main frame, shown only fragmentarily in Figs. 1 and 4. The selector cams indicated generally by numeral i2 and the various other operating cams are mounted to sleeves which are rotatable Fig. 2 is a front elevational view of the reperabout a shaft l3 which is journalled frictionlessly in a pair of brackets 14 suitably secured to a base (not shown). The shaft 53 is rotated continuously in a clockwise direction by means of a gear 16 which is driven continuously by a suitable source of power (not shown).

A selector cam sleeve I7 is mounted rotatably about the shaft is and is integral with a driven member (not shown) of a single revolution selector clutch, the driving drum of which is represented by numeral i8. This clutch whose driving member i8 is secured to the continuously rotating shaft 43 is preferably of the type disclosed in the copending application of A. N. Nilson et al., Serial No. 707,176, filed in the United States Patent Office on November 1, 1946.

The selector cam sleeve it carries the usual series of five selector cams El, 22, 23, 25 and 255. For the sake of clarity in the drawings only the fifth selector cam 25 is shown in Fig. 1; however, the contour of all of these cams is clear from the timing diagram shown in Fig. 7.

A selector magnet 22? is mounted suitably on the main frame of the reperforator and a selector armature 28 cooperates with the magnet 21. The armature 28 is biased by a spring 29 whereby the left end thereof, Figs. 2 and 3, is held in its lower or spacing position when the magnet 27 is tie-energized. Energization of the magnet 21 causes it to pull up the armature 28 to marking position.

A lever 3! is mounted pivotally on a shaft 32 and is urged continuously in a clockwise direction by a spring 33. The lever 3| has a shoulder 35 thereon which is adapted to engage and be blocked by the armature 28 when it is in marking position, but when the armature 28 is in-spacing position the lever 3| may be pivoted clockwise by its bias spring 33. A selector clutch trip off lever 36 is mounted pivotally on a, shaft 37 suitably secured to the main frame, and carries a pair of pins 38 and 39 which cooperate with the lever 3! in a manner whereby pivotal movement of the lever 3| pivots the selector clutch trip off lever '36. The trip ofi lever 36 has a foot ll which cooperates with a clutch lever (not shown) on the driven member of the selector clutch. When the trip off lever 3% is pivoted clockwise the foot d! releases the clutch lever allowing the driven member and selector cam sleeve H to be rotated. Aselector clutch trip ofi cam 42 on the selector cam sleeve i! cooperates with a lug 43 on the trip 01f lever 36, the low portion is of the cam 42 presenting itself opposite the lug 33 upon the completion of each revolution of the selector cam sleeve IT. The cam 62 holds the lever 3i out of engagement with the armature 23 except during the stop and start impulses. The stop impulse of each telegraph signal being a marking impulse, it is apparent that the foot 41 will engage the clutch lever at the end of each signal to stop rotation of the transmitting cam sleeve. The start impulse of each telegraph signal being a spacing impulse, it is also apparent that the transmitting cam sleeve will be released for rotation upon the receipt of each start impulse.

A pair of armature locking levers 46 and 4'! are mounted pivotally on a shaft c8 and each is biased clockwise by an individual spring 53. Both of the locking levers have a, lug 52 which cooperate with an individual locking cam 59. The locking lever 56 has a stepped shoulder 54 thereonfor locking the armature 28 in spacing position and the locking lever 41 has a stepped shoulder 55 for locking the armature 28 in marking position. As is apparent from Fig. 7 the cam 49 has a contoured surface which allows the armature 23 to be held in whichever position it assumes in response to the signal impulses received by the magnet.

The five selector cams 2| through 25 cooperate with a series of five selector levers El, 62, 63, t l, and 65. Each of the selector levers 8! through 65 is mounted pivotally on a shaft 8? suitably secured to the frame and is yieldable thereon due to the action of individua1 bars slidable in apertures in a plate 66 secured suitably to the frame, and individual leaf springs it which continuously urge the selector levers towards the shaft 6? (Fig. 2) Each of the selector levers is biased in a clockwise direction by a tension spring 68. Each of the selector levers has a lug 69 which follows the corresponding selector cam. When the armature 28 moves to marking position in response to one of the signal impulses the locking lever 41 momentarily locks the armature 28 in such :marking position during which time the selector lever opposite the 10W part of the corresponding selector cam moves beneath the armature 28. When the armature 23 is moved to spacingposition in re-. sponse to a signal impulse the locking lever 46 momentarily locks the armature 2B in spacing position. When the armature is thus moved and held in spaced position the selector lever opposite the low part of the corresponding selector cam is blocked by the armature .Zfiand the lug .89 is.

prevented from dropping into the low part of such cam.

A series of selector interponents Ti, only one of which is shown, have slots 72 therein and are slidable longitudinally. A comb bar 13 secured suitably to the main frame has slotsin the transverse edgcs thereof which position transversely the selector interponents H. The comb bar 73 fits loosely within the slots '12 of each selector interponent T l allowing eac selector interponent ii a slight degree of pivotal movement. A shaft i l suitably secured to the mainframe limits the clockwise pivotal movement of the selector interponents H and a series of springs 76 secured suitably to the main frame continuously urges the selector interponents H in a clockwise direction.

Each selector interponent ii cooperates with a corresponding one of the selector levers El through whereby a, foot '1? on each selector interponent ii remains on top of the correspondt ng selector lever whenever a spacing controls such selector lever and drops behind the selector lever when a marking impulsecontrols it. Referring to the selector cam 25, selector lever $5 and the selector interponent H in the fifth position, when the foot .l'l drops behind the selector lever in the manner .described, subsequent rotation of the cam sleeve ll brings an apex or extra high portion 18 of the selector cam 25 against the lug 59 which pivots the selector lever 65 counterclockwise thereby moving the selector interponent ii to the left to set a corresponding punch interponent of a series of punch interponents iii, -82, v83, 84 and 85.

A latch bail s1 secured pivotally tothemain frame at points 83 and biased in a clockwise direction by a spring 89 is adapted to latch a tooth 99 on any of the punch interponents 8! through 35 moved by the selector interponents H in the above-described manner. A ball crank lever 9I secured pivotally to the main frame -by a bolt 92 has a cam follower 93 which follows a punch interponent release cam 94. The follower 93 is continuously urged against the cam 94 due to the action of a tension spring 96 suitably secured to the main frame. An upturned end portion 91 of the bell crank lever 9| cooperates with a lug 98 on the latch bail 81 to disengage the latch ball 81 from the punch interponents 81 through 85 when the high part of the cam 94 is opposite the follower 9 When all of the punch interponents 8| through 85 have been set due to the action of the extra high portions on the selector cams 2I through 25, a bail 56 is actuated to disengage the selector interponents H from the selector levers 6I through 65. The bail 56 consists of an L-shaped member pivoted to the main frame by a bolt 51 and is urged continuously in a counterclockwise direction by a spring 58. The ball 56 has a cam follower 59 thereon adapted to ride a cam 60. As the cam 60 rotates the high portion thereof, upon engagement with the cam follower 59, pivots the bail 56 against the action of the spring 58 to erase any selection existing in the set of selector interponents H by moving them all to spacing position preparatory to the next selection to be set up therein.

Each of the punch interponents 8I through 85 is supported in a punch bail I0 I. A pair of comb bars I02 and I03, integral parts of the punch bail IOI, position transversely the punch interponents and allow them to slide longitudinally in the punch bail IOI. A set of tension springs I06 secured suitably to the punch bail IOI urge the punch interponents 8| through 85 to the right or spacing position. The punch bail IOI is supported pivotally in the side plates II by a pair of pivot bolts I04 and is actuated pivotally about bolts I94 by a toggle mechanism indicated generally by reference numeral I01.

A punch clutch actuating cam I08 mounted on the selector cam sleeve I1 controls a single revolution punch clutch I09. The clutch I09 is preferably of the same type as the selector clutch, the driving drum of which is indicated by numeral I8. The clutch I09 has a driving drum III which is secured to the continuously rotating shaft I3 and cooperates with a driven member II2 secured to a sleeve II3 freely rotatable on the shaft I3. A punch clutch trip off lever II4, secured to a shaft II6 mounted pivotally in the side plates I I, cooperates with a clutch lever I I1 to trip off the punch clutch I09. A cam follower lever I I8 secured to the shaft I I6 is continuously urged in a counterclockwise direction by a spring I I9 whereby a follower I2I is held in engagement with the punch clutch actuating cam I08. When the high portion of the cam I08 presents itself to the follower I2I the shaft H6 is rotated clockwise sufficiently to pivot the trip off lever II4 from engagement with the clutch lever I I1 thereby releasing the clutch I09 for rotation. It is, therefore, clear that the punch clutch I09 is only tripped off when the selector clutch has been tripped off previously.

A punch eccentric I22 is secured to the sleeve H3 and as the punch eccentric I22 rotates it substantially reciprocates a lever I23. The lever I23 is secured pivotally by a bolt I24 to one arm of a U-shaped lever I26 and is adapted to oscillate pivotally the U-shaped lever I26 about a bolt I21 secured rigidly to the reperforator frame. The other arm of the U-shaped lever I26 is connected pivotally to a link I28 by a bolt 6 I29 whereby reciprocation of the lever I23 is transferred to the link I28. The link I28 is secured to a shaft I3I which actuates the toggle mechanism I01.

A beam I32 is mounted rotatably between the side plates II on a shaft I33. A U-shaped lever I34 secured to the beam I32 has a pair of arms I36 and I31 which are secured pivotally to the shaft I3I. Adjacent the arms I36 and I31 are a pair of levers I38 and I39 also pivoted to the shaft I3I. The levers I38 and I39 are secured pivotally at the opposite ends thereof to the punch bail IN by a pair of bolts I4I. As the link I28 moves to the left straightening the toggle mechanism consisting of the arms I36 and I31 and the levers I38 and I39 raises the punch bail I 0| is raised and conversely as the link I28 is moved to the right the toggle mechanism breaks and the punch bail IOI is lowered.

A punch block I42 is supported rigidly between the side plates II and has a series of slots I43 within which a series of punches I44 are reciprocable. A comb bar I46 supported between the side plates II serves to guide the punches I44 and acts as a stop for the punches engaging a shoulder I41 on each punch I44 as the punch is lowered. A die plate I48 is bolted to the punch block I42 and has a series of slots (not shown) within which the punches I44 extend during the upward movement thereof. Each punch I44 is held within its slot I43 by a spring I49 which is secured to a bar I5I suitably mounted between the side plates II. The punches I44 are therefore floatingly mounted in the punch block I42.

A shaft I54 mounted between the side plates II supports a rotatable sleeve I55. A tape feed hole punch wheel I 56 is secured to the sleeve I55, and a series of feed hole punches I'5'I found on the periphery of the wheel I56 mesh with die holes I58 spaced uniformly around the periphery of a die wheel I59 freely rotatable on a shaft I60. Rotation is imparted to the punch wheel I56 and die wheel I59 by means of a ratchet wheel I6I secured to the sleeve I55. A tape guide wheel I62 having a shoulder I63 around the periphery thereof is also mounted on the sleeve I55. A tape feed guide I64 guides a tape I 66 into position where it is engaged by the feed hole punch wheel I56 and the tape guide wheel I62, and as the feed hole punch wheel I56 and the die wheel I 59 mesh with the tape I66 therebetween a series of uniformly spaced feed holes are punched in the tape I66. The correct transverse position of the feed holes in the tape I66 is maintained by the tape guide wheel I62 as the edge of the tape I66 abuts the shoulder I63. The tape is then advanced through a slot (not shown) between the punch block I 42 and the die plate 48.

The ratchet wheel I6I is rotated by means of a pawl I61. The pawl I61 is secured pivotally by a bolt I68 to an extended portion I69 of the arm I36 and is biased in a counterclockwise direction by a spring I1I suitably secured to the main frame. A detent lever I 12 is secured pivotally to'the side plate II by a bolt I13 and is biased in a counterclockwise direction by a spring I14. The

detent lever I12 carries a detent roller I16 which engages the ratchet wheel I6I between theteeth on the periphery thereof to prevent backward rotation of the ratchet wheel I6I while the feed pawl I61 is being returned preparatory to making an-,

other stroke. As the tog l mechanism I01, is straightened to actuate the punch bail I0 I, the

extended portion I69 on thearm I36 is pivoted counterclockwise which pulls down the feed pawl I 7 16-1 causing it toslip over orient the teeth on the ratchet wheel 115i and thereafter'as the'toggle 1'01 breaks, the teed pawl lil -is moved up to step the ratchet wheel I81, after which it is held in stepped position by the detent roller I 1 6.

When the punch bail 101 is raisedextended portions 1'11 oneach of the punch interponents 81 through 85 which have been previously moved to marking position engage shoulders 118 on corresponding punches 144toraise thesepunches iorcing the cutting edges thereof through the tape 1B8. Thereafter as the punch bail 101 is lowered the tape 166 is advanced and the punches 144 which were raised to tape piercing position are carriedalong and pivotedcounterclockwise to the dotted position ITS shown in Fig. 2. As the'punch bail 101 is lowered the-extended portion 111 on each of the selected punch interponents =81 through 85 engages a foot 181 on each-punch 144 to withdraw the punches 144. The perforations thus left in the tape 166 after the punching operations are of the well-known chadless type wherein the portions of the tape punched out remain hinged to the tape giving the appearance of trap doors. related by the above described reperforator.

A brieidescription of theoperation of the inventioniollows. The selector magnet 21 is energized and dc-energized in accordance with the signals received thereby from a distant transmitter (not'shown). The armature 28 1's accordingly pulled up when the .magnet 2'1 is energized and allowed to fall dueto the urging of the spring, 29 whence-energized. Normally when'no' signals are being received the magnet 2'1 isenergized as the transmitter sending thesignals is in its'stop position, a marking position. The armatureiit, beingpullediup, blocks the shoulder 34 to prevent pivotal movement of the selector clutch 'trip ofi. lever 35 thus preventing rotation of the selector cam sleeve 11. Whena startimpulseis received, being a spacing impulse, the magnet 21 is deenergized whichallows the armature 28 to move to spacing position. At this time, the lowportion of thecam44beingopposite the lug 43 and the Figafishows an example of the tape pershoulder+34 being unblocked, the selector clutch trip off lever 36 pivots clockwise to trip on the selector clutch;

After'the start signal is received'bytheselector magnet 21; five permuted marking or spacing impulses are received intimed relation to the presentation of the low-portions of the selector cams 21 through 25tc thecooperating-lug followers llllcnthe selector levers 8| through 85; Each marking or spacing impulse received shortly prior to the presentation of the low part of the selector cams to the lug'zfollowers 6'9 and is received just prior to the presentation of'oneoi the low portions of the locking cam '49. This allowsthearmatureit t'o respondto the impulse and to be thereafter locked by the locking lever-46 if the impulse is a spacing impulse andzby the locking lever "41 if it-is amarking impulse. The armature 28 being locked in this manner assures that it will be in the'correct position to properly control the setting of. the selector levers 81 through 65. The locking lever 46 or41 whose follower .SZHhasentered enact-the low portions of the locking cam 49 is urged counterclockwise (Fig. .2) after each signal impulse :is' received by the .properselectorlever 61 through iiinorderto allow the armature 28-to respond to thesubsequent impulse received by the magnet 21;

The selector interponents l 'l cooperating with; the. selector levers which have been. -moved.-..-rto

tape.

marking position drop behind the corresponding levers are moved in this manner, the selector interponents H which have dropped behind the selector levers are moved further to the left and those selector interponents '11 which "are positinned on top of their corresponding selector l levers remain in the rightward position thereof (Fig. 2)., the selector levers merely sliding beneath the feet 1-1.

'As the selector interponents II move tothe left in this manner they engage and pushcorrespondin punch interponents 81 through '85 to the left whereby the teeth 99 on the punch interponents -so moved slip beneath and thereafter are latched by the latch bail 8'1. Thepunch interponents 81 through having been latched in marking position, the selector interponents '11 return to the right due to the action of the springs '16 when the bail 5B is actuated by the cam lill. Shortly thereafter the selector Jinterponent release bail 5G is pivoted clockwise by the-cam 60 'to lift all of the selector interponents 71 previously moved to-marking position, leaving them on top of the selector levers, thus erasing thesel'ection existing therein. By this time the selector :cam sleeve ll has commenced a second revolution and the signal received during the firstz'revolution thereof. is stored in the punch interponents 81 through 85.

The extended-portions ill on the punch interponents -81 through 85 which have been moved to the left (Fig. 2) or marking position are in positions for actuating their respective corresponding. punches 144 when the punch interponents are raised. The toggle mechanism 101 for raising the. .punch bail 1H1 commences straightening. at substantially the same time that thepunch interpon'ents are selectively positioned by the selector interponents l1, and'is completely straightened at a time between the selection of the first and second impulses of the next succeeding. signal. During the period when the toggle it? is straightening, the feed pawl 16'! is being backed up and the feed hole punch wheel 156 is rendered stationary by the detent 1'12 cooperating with the ratchet wheel 161.

The tape 166 being stationary during the upward movement of the punch bail 101, the selected punches 1-44 are engaged on their shoulders 1'18 by the extended portions 111 of the punch interponents and the punches 144 are therefore raised vertically, the springs M9 holding the punches 144 within the slots 143 in the punch block 142. The punches 144 pierce the tape 166 leaving the chad attached thereto. Upon straightening of the toggle 101, the punches 144 attain their uppermost position. Thereafter, as breaking of the toggle It! continues, the pawl I61 engages a. tooth in the ratchet wheel 161 to advance the feed hole punch wheel 156 a step; Such movement of the punch wheel 156 causes another of the punches 151 to enter one of the die holes 158 in the die wheel to punch another feed hole in thetape 166. The feed holesthus punched, vlike the; code holes punched by 'the punches 144, have. the chad attached to the- Besides' punching the feedhbles in the.

tape I66, the feed hole punch wheel I56 also advances the tape I66. The tape I66 is advanced while the punches I44 are being withdrawn therefrom and the punches I44 are therefore carried along with the tape I66 to the dotted position thereof represented by numeral I19. As the bail I! is lowered due the breaking of the toggle I01, the extended portions I11 of the punch interponents engage the feet I8I of the punches I44 to lower the punches from the tape I66. The punches I 44, upon withdrawal from the tape I66 are immediately snapped back into position in the guide slots I43.

Very shortly after the tape feeding is com pleted and the punches I44 are completely withdrawn the high portion on the punch interponent release cam 94 presents itself to the cam follower 9-3 pivoting the bell crank 9| clockwise to raise the latch bail 81 from engagement with the teeth 99 on the punch interponents. The springs I06 on each of the punch interponents then are free to move their punch interponents to the right or unselected position. Thereafter the entire punching mechanism is ready for the next selection.

In Fig. 6 of the drawings there is shown a modification of the principal embodiment of the invention. Only those elements are shown which are deemed essential to clearly differentiate this embodiment from that already described, like numerals'being used to indicate parts identical with those in the principal embodiment. The fundamental distinctions between this embodiment and the one previously described are that the selector mechanism is a two cycle selector and the toggle for actuating the punch bail is a two cycle toggle.

A continuously rotating shaft I3 provides the power for the punch bail toggle H6 and the selector mechanism represented only by the fifth selector cam 2I5. The selector cam sleeve I1 is secured to the driven member of a half-revolution selector clutch (not shown) of the type previously mentioned as shown in the copending application of A. N. Nilson et al. The only difference between this clutch and the clutch I09 is that the clutch lever has two stops instead of one.

Signals are received by a magnet and an armature 28 is actuated in response thereto. The; armature 28 controls the half-revolution selector clutch already mentioned in the same manner as the selector clutch shown in Fig. 1 is controlled. The armature 28 also controls the consecutive selection of a series of selector levers represented by the single selector lever 65. When the cam sleeve I1 is released for rotation through one-half of a revolution the selector cams consecutively present their low portions 22I to lugs 69 on each of the selector levers 65. When the cam sleeve I1 is subsequently released for a second half revolution the selector cams consecutively present their low portions 223 to the lugs 69.

The transfer of the selection set up in the selector levers 65 to the selector interponents, represented by the selector interponent 1! and to the punch interponents and punches, represented respectively by the punch interponent 85 and the punch I44, is accomplished in the same manner as in the principal embodiment. The punch interponents 85 are carried in a punch bail IN and are latched in selected position by a latch bail 81 the same as in the principal embodiment. The selection having been set up in the punch interponents 85 the selector inter- 10 ponents H which have been previously set in marking position are disengaged from behind the corresponding selector levers 65 by a cam actuated bail 56.

Due to the fact that a complete transfer of signals from the selector magnet to the punches I44 is accomplished for each half revolution of the selector cam sleeve I1, it is necessary that each and every cam on the selector cam sleeve I1 be a two cycle cam. Therefore, any indentations or high portions on any of the cams is duplicated on such cams at 180 degrees from such indentations or high portion. This is illustrated by the fifth selector cam 2I5 already discussed which also carries two extra high portions 232 at 180 degrees from one another.

A punch actuating clutch 233, of the same type as the punch clutch I09 already discussed has a driven element 234 having two stops 236 thereon at 180 degrees from one another. When the selector cam sleeve I1 is released for rotation through one half of a revolution, one of a pair of opposite high portions 235 on a cam 23I secured to the selector cam sleeve pivots a follower lever H8 and a punch clutch trip off lever I I4 away from the stop 236 to release the sleeve II3 for rotation through I degrees. When the sleeve I I3 is thus released for rotation the eccen tric I22 carried thereby moves the lever I23 to the left pivoting the U-shaped lever I26 counter: clockwise which through the link I28 moves the toggle 2I6 from the position shown to the dotted position thereof represented by numeral 24I. When the sleeve H3 is subsequently released for a second half revolution the toggle 2I6 moves from the dotted position 241 to the full-line position shown in Fig. 6. During each movement of the toggle 2I6, whether to the left or to the right, the toggle straightens and breaks. Therefore, the bail IOI is raised to actuate the punch interponents and the punches I44 twice during each complete revolution of the selector cam sleeve I1 and the cam sleeve I I3.

The feed hole punch wheel secured to the sleeve I 55 is stepped by the ratchet wheel I6I and a pawl 242. The pawl 242 is secured pivotally to the bail IN by a bolt 243 and is urged in a clockwise direction by a spring 244. While the bail IN is being raised due to the straightening of the toggle 2I6 the pawl 242 overrides one tooth on'the ratchet wheel I6I. The ratchet wheel I6I is prevented from rotating during the upward movement of the punch bail IOI by a detent 246. The detent 246 mounted pivotally on the side plate II by a bolt 248 is urged continuously in a counterclockwise direction by a spring 249 and carries a detent roller 241 adapted to enter the notch between two of the teeth on the ratchet wheel I6I to yieldingly prevent the ratchet wheel from rotating as the pawl 242 slips over one of the teeth. Because the pawl 242 is secured directly to the punch bail IN the tape I66 is not fed during the forward or upward stroke of the punches I44 but is fed during the return of the punches I44 to the lower or nonpunching position thereof. Therefore, during each half revolution of the selector cam sleeve I1 the tape is advanced one step.

Various changes and modifications may be made in the invention without departing from the scope thereof.

What is claimed is:

1. In a telegraph tape reperforator, a selector for receiving code signals, a plurality of punches, means for transferring said signals from said seoperable simultaneously therewith for actuating said feed pawl.

2. In a telegraph tape reperforator, a selector mechanism for receiving code signals. including a plurality of. selector-cams and a selector armature, a plurality of selector interponents corresponding to said plurality of selector cams, said selector cams and said: armature cooperating to permute said selector interponentsinto a permutation Of positions corresponding to the signals received by said; selector mechanism, a plurality of punches for perforating a tape, a plurality of punch interponents, means on said selector cams for actuating said selector interponents totransfer the permutation existing therein to said punch interponents, a toggle for actuating said punch interponents and. said punches whereby the permutation existing in said punch interponents is perforated in the tape, means: for feeding the tape, a feed pawl for actuating saidtape feeding means, and means on said toggle and operable simultaneously therewith for actuating said feed-pawl.

3. In a telegraph reperforator for perforating a message control foinna selector mechanism for receiving code signals including a rotary selector camassembly and a selector armature, a plurality. of, intermediate permutablemembers, a plurality of selector members cooperating with said selector cam assembly and said selector armature whereby the signals received by said selector mechanism are transferred to said plurality of intermediatepermutable members forming a permutation of positions thereof, a plurality of selectable punches under the control of said intermediate permutable members, a toggle for actuating selected ones of said selectablepunches to perforate a message control form, means for feeding, the control form, .a feedpawl for actuating said control form feeding, means, and means'on said toggle and operable simultaneously therewith for actuating said feed pawl.

4. In a telegraph reperforator for perforating a message control'iform, a selector mechanism for receiving code signals includinga rotary two cycle selector cam assembly and a, selector armature, said rotary two cycle selector cam assembly completing a revolution during. the receipt of two code signals, a plurality of intermediate permut able members, a plurality of selector members co operating with said. selector cam assembly and said armature whereby the signals received by said selector mechanism are transferred to said plurality of intermediate permutable members forming a permutation of positions thereof, a plurality of selectable punches for perforating a message control form under the control of said intermediate permutable members and a two cycle toggle for actuating selected ones of said selectable punches to perforate said message control form.

5. In a telegraph reperforator, a selector mech anism for receiving code signalsv including a rotary tWo cycle selector cam assembly and a selector armature, said rotary two cycle selector camassembly completing a. revolution during the receipt of two, code signals, a plurality of intermediate permutable members, a plurality of selector members cooperating with said rotary two cycle selector cam assembly and said armature whereby the signals received by said selector mechanism are transferred to said plurality of intermediate permutable members forming a permutation of positions thereof, a plurality of selectable punches: to perforate "a message control form under the control of said intermediate permutable, members, a two cycle-toggle adapted to be straightened for actuating selected ones of said selectable punches, and a movable link under the control of said selector cam assembly operableto straighten and break said toggle during each movement of said link to cause theperforation of said message control form.

WALTER. J. ZENNER.

REFERENCES CITED The following references areof record in the file; of this patent:

UNITED STATES PATENTS Number Name Date 1,884,743 Kleinschmidt Oct. 25, 1932 1,973,539 Morton et al. Sept. 11, 1934