US2343882A - Keyboard printing and perforating apparatus - Google Patents

Description

March 14, 1944. .1. o. CARR ETAL KEYBOARD PRINTING AND PERFORATING APPARATUS Filed Aug. 17. 1942 4 Sheets-Sheet 1 INVENTORS JOHN O. CARR MAURUS T- GOETZ March 14, 1944. J. o. CARR ETAL 2,343,882

KEYBOARD PRINTING AND PERFORATING APPARATUS Filed Aug. 17, 1942 4 Sheets-Sheet 2 FIG. 4

'asssosaooassssas 3 3933093 33 O9 333 I) 33 O 3 33 1 8! S I I40 97 72 67 INVENTORS JOHN O- CARR MAURUS T. GOETZ BY -ATTORN Y March 14, 1944. J. o. CARR ETAL KEYBOARD PRINTING AND PERFORATING APPARATUS Filed Aug. 17, 1942 4 Sheets-Sheet 3 Z R n SR R 0 6 T N E S VNU mH R 0U A M JL Zi ATTORNE March 14, 1944. J. o. CARR ETAL KEYBOARD PRINTING AND PERFORATING APPARATUS Filed Aug. 17, 1942 4 Sheets-Sheet 4 ATTORNE Patented Mien, 9 4; 2,343,882

."VISTATES OFFICE APPAR- John 0. Carr, Park Ridge, and Maurue T. Goetz, Chicago, IlL, assignors to Teletype Corporation, Chicago, 111., a corporation of Delaware Application August 17, 1942, Serial No. 455,106

' q 12 Claims. (01. 164-112) This invention pertains to perforating and ting up of a selection for perforating a tape from printing apparatus and more particularly to a the keyboard also causes the simultaneous concombinationqperforating and printing unit for ditioning of a selector mechanismior enablin perforatingtape inrsignal code combination form' substantially eoncurrentiprinting' uponthe same and substantially simultaneously printing theretape and the actual-printing and perforating on characters representative of the particular operations are completed by means of cam mechpermutations punchedin the' tape. It relates to anisms associatedwith a power driven shaft.

a manual keyboard perforating and printing de- During each depression of a key, a universal bar vice for a tape to be later transmitted at the is p d to close 8 pair of contacts and thus to sending station. complete a circuit, to a clutch magnet which It is know in th field f ri tin 't l r hy renders a single revolution clutch efiective for that the speed of operation of printing telegraph initiating the rele'ase-ofthe cam mechanisms for systems is necessarily limited by the speed of a cycle of operations. f signal transmission and/or reception. Normally, e nt n y e" better u d ood y printing telegraph apparatus is operated at a rate reference to th h n l w n de rip i n and of speed considerably less than the rate of speed to the -W gs wherein! susceptible of attainment by a competent typist. 1 is an cnd elevational view, partly in e- It is desirable in some cases that tape messages tion, of the pp a s o d in e. P t

4 be prepared locally by an operator for subsequent invention;

transmitting purposes. For these tape messages, 2 is a front elevational view of the same which are locally prepared, it is obviously not apparatus showninFl necessary that the typing speed of an operator 3 lte 8' P View Of the P p should be limited by signal speed and it is thereapparatus;

fore proposed by the present invention to provide 4 illustrates e pe P pa d according t0 2. power operated printing and perforating unit .25 the Present invention; controllable from a free keyboard, the operation 5 is aIVieW 0 e apparatus taken on th of which is unrestrained by signal speed requireline -7- 0f a d merits. An attendant advantage of such sum is 6 is a diagram of a circuit provided to prethat it may be operated by a typist w possesses vent repeat operations while causing one cycle only ordinary typing experience. In'the employ- 30 Operationsment of the type of printing telegraph apparatus Refel'llng new to the drawings. the n e tion as exemplified by Patent No. 2,255,794 issued to will be described in e ai The perforating R. A. Lake on September 16, 1941, and Patent No. mechanism new about to be described, is as re- 2,273,910 issued to c. w. Swan on February 24, 7 game the keyboard, pemllitetion code bars. a 1942, wherein there are limitations in speed of 5 Punch selectors t type shown in Patent No. operation as explained, operators are required 1,834,753 to K L and reference y be who first must be trained before they develop the had to that Patent for a m e complete d osure technique necessary to enable operation of a f the Operating detailstelegraph keyboard with maximums'efllciency. A base casting ll houses plurality o key The primary object f the present invention is levers l2 each provided with a keytop l3 (Fig. 1). t provision of a combined printing and p Near the front of the casting-and disposed beforating apparatus in which t p t I d neath the key levers 12 there is provided a pluralperforating operations are controlled simultaneity of Pairs of d a s N. The particular ously from a keyboard wherein the rate of operanumber of Permutation a necessary is p tion is not limited by the speed of transmission 5 em upon e p ula o e e p oyed. The and reception of telegraph c signal structure disclosed in the drawings is adapted for pulls 3s, i j use in a five-unit code and consequently a, eorre Other objects, features, and-advantag f th pending number of pairs of code bars is provided. invention will become evident as the invention is Each P i Of code bars comprises a bar 15 and herein further described inmore detail. bar Each 0f these bars is P ded with a The present invention prov'ides keyboard pair of vertical slots ll (Fig. 2), one at each end, operated printing andperforating mechanism in by means of W ich he r p tive bars are which tape s e forated dependent on the mounted for slidable vertical movement upon the mutative setting of a series of levers in accordcomb m rs l8, and the end comb members 1. ance witth the Baudot five-unit code. The set- There is associated With ea P i 1 code bars.

either code bar of a pair of bars rocks the T- shaped members l9 and lifts the companion code bar of the particular pair. Articulated to the depending portion of each of the T-shaped rock arms I9 is a longitudinally movable permutation bar 22. When a code bar of any pair is depressed through the action of the lay lever, the rock arm arm l9 will be rocked about its pivot, thus moving the longitudinal permutation bar 22 either to the right or left as viewed in Fig. 2.

Each of the key levers |2 may, when operated, engage and depress one of the code bars of each pair of code bars M to set these bars in accordance with a character code combination. For the accomplishment of this result the upper edges of the code bars M are notched to provide high and low portions in accordance with the particular code. Also, the bars of each pair of code bars are complementary; that is, the notches of one bar are opposite the projections of its companion bar. The interconnection between the bars of each pair of bars l4 by means of the rock arms l9 prevents the simultaneous depression of two key levers. If an attempt is made to operate more than one key lever, the key levers can only be depressed for a short distance when they will be blocked by the high portion of the code bars.

Each permutation bar 22 is provided with an upstanding bifurcated member 23. interposed between the vertically extending arms of each bifurcated member is a depending portion 24 of interponent member 28, the front portion of which is provided with a cut-out section 29 by means of which those interponents 28 which are not shifted to the left (as viewed in Fig. 2) by their associated vertical levers 25 are allowed to remain out of the path of punch pins 32 operable by a punch bail 3| to be hereinafter described in detail. It is now readily understandable that in accordance with the depression of a particular key lever by means of the permutation bars 22, the interponents 28 will be shifted to the left or the right in accordance with the particular code combination associated with the particular key lever. The interponents will thus be selectively positioned for engagement with a series of tape punch pins 32 carried by a punch block 33 when punch bail 3| is operated.

The punch bail 3| includes a cradle portion 34 over which the interponents 28 are mounted for slidable horizontal movement. The punch bail 3| is pivotally mounted about the pivot studs 35 and 36, as best seen in Fig. 1. The cradle portion 34 of the punch bail 3| carries an upwardly extending projection 31 in order that the feed hole of the tape may be invariably punched.

For initiating the operation of the power operated mechanisms of the present invention. each key lever is permitted to engage a universal bar 88 (Fig. l) which pivots a pair of associated T-levers 39 (only one being shown) about the shaft 6 to thereby cause the shifting of longitudinal bar member 42 to its right-hand position as viewed in Fig. 2 to close a pair of universally operated contacts 43. The universally operated contacts 43 control a circuit to a clutch magnet 44 (Fig. 3) which in turn controls the operation of a clutch 45. By means of worm gear 46, a motor 41 continuously drives gear 48 carried by fixed sleeve 68 at a faster rate than the selector cam drum of the above-mentioned Lake and Swan patents and thus causes the continual rotation of a shaft 49 to which is operatively connected the driving portion 50 of the clutch 45. slidably mounted at the upper end of shaft 49 about a sleeve member 51 is a sleeve member 5| which constitutes the driven portion of the clutch mechanism. The sleeve member 5| includes a collar portion 52 engageable by a compression spring 53, which at its opposite end engages the cam member 54 which is integral with sleeve 40 attached to sleeve 51 and thus there is exerted upon the sleeve 52 an upward pressure asviewed in Fig. 1 due to the influence of spring 53. Axial movement of sleeve member 5| is permitted due to the splined connections 55, 56, provided between the sleeve member 5| and the sleeve member 48 positioned therebelow which carries the previously identified cam member 54.

Sleeve 51 is slidably mounted upon the shaft 49 and has a lower splined connection shown generally at 88 to sleeve 59 which is loosely mounted about sleeve 68. A compression spring 30 positioned between collar 56 which is an integral part of sleeve 51 and disc 59, tends to urge sleeve 51 to an upward position while the interposition of a friction disc I88 between the upper side of gear 48 and the lower side of sleeve 59 tends to rotate the sleeve 51 in the same direction as the gear 48 to thereby facilitate the engagement of the teeth of clutch sleeve 5| with the teeth of clutch sleeve 58, and to prevent backing up with consequent grinding of teeth during the disengaging period.

When the clutch magnet 44 is energized upon the depression of the universal bar 38 as each key lever is operated, armature 62 is attracted, the projection 63 of clutch trip lever 64 is removed from the path of the cam stopping surface 9 (Fig. 1) carried by the sleeve member 5|, and the spring 53 therefore is enabled to shift the sleeve member 5| to cause its interengagement with the driven clutch member 58. This causes the rotation of the cams for a cycle of operations.

At the lower end of sleeve 51 is carried a punch cam 65 which is engageable by a follower 66 carried by punch arm casting 61. The punch arm casting 61 is pivoted about pivots 68 and 69 and is urged into following engagement with cam 65 by means of a spring 1| which urges punch arm 61 about its pivots 68 and 69 in a counterclockwise direction as viewed in Fig. 2. Pivotally connected to the punch arm 61 about a pivot stud 12 is a punch bail link 13 made up of two elements 14 for adjustability which are interconnected by means of adjusting screws 8|. Punch bail 13 is pivoted about a stud 15 at the upper end of punch bail 3|. It will now be seen that when the universal bar is operated upon the depression of a particular key, the clutch magnet will allow the release of the cam sleeve 51 and operation of cam 65 whose high portion will engage the follower 66 to rock the punch arm 61 in a clockwise direction, as viewed in Fig. 2, causing the punch bail ill to be likewise rocked in a clockadapted to support a feed pawl 84 which operates the tape feed roll 85 to cause the advancement of the tape for each cycle of operation. On each operation of the punch bail 3|, the feed pawl 84 will be raised and lowered to cause the stepping of feed roll 85 in a manner well known in the art.

Punch block 33' herein disclosed is adapted to punch chadless tape which is a kind of 'tape wherein a series of hinged lids are punched in the tape rather than a complete circular perforation. This feature is described in detail in the above mentioned patent to R. A. Lake, and reference may be had to such patent for a detailed disclosure. in accordance with the present invention is shown in Fig. 4.

Printing operation Mounted on pivot shaft 9I (Fig. 2) is a bell crankbail member 92 having a bifurcated extension 93 engageable by pin 94 carried by the punch bail 3|. The opposite arm 95 of the bell crank member carries an upwardly projecting portion 96 which underlies a series of five horizontal levers 91 also mounted on the pivot .shaft 9i. The upper portion of vertical levers 25 which are positionable according to the particular code combination effected by the depression of a particular key are positionable to underlie or to remain out of the path of the horizontal levers 91. When the punch bail 3I (Fig. 2) is pivoted in a clockwise direction as explained, the engagement of pin 94 associated with the punch bail in the bifurcation 93 of bell crank 92 withdraws the projection 98 associated with the bail 92 from beneath the horizontal levers 91 inasmuch as clockwise pivotabie movement is also imparted to the bail member 92 due to the engagement of pin 94 in the bifurcation 93. It is thus apparent that those levers 91 which are not blocked by associated vertical levers 25 will be free to pivot downwardly in a clockwise direction as viewed in Fig. 2. Mounted adjacent the horizontal levers 91 as best Seen in Fi 1 are a series of five bell cranks 98 pivotally mounted upon a common shaft 99. The horizontally extending arms I8I of th bell cranks 98 are of progressively arranged lengths and carry depending portions I82 each adapted to make contact with an associated hori zontal lever 91. The upwardly extending arms I83 of the bell cranks 98 are adapted to contact a series of five vertical levers I84 all pivotabie about a common shaft I85. The vertical levers I84 are of progressive lengths as best viewed in Fig. 2, and are adapted to cooperate with a series of five bell cranks I86 also having arms I81 of complementary progressive lengths, the bell cranks being mounted about a common pivot I88. To projections I89 and III of each of the bell cranks I88 are attached, respectively, springs H2 and H3 which urge each of the bell cranks I89 in a clockwise direction, as viewed in Fig. 3.

Mounted adjacent to the arms II4 of each of the bell cranlm I86 is one of a series of five code bars II5. Each of the code bars II5 has formed thereon a slotted portion II6' into which projects the extremity of one of a series of five levers III which are urged in a counterclockwise direction A section of chadless tape prepared by means of springs H8 and I I9 about a common pivot point I2I. Also mounted about the pivot point I2I is a bail member I22 having an integrally formed arm I23 which carries a projecting extension I24 adapted to straddle all of the levers II1. An arm I25 of the bail I22 carries a follower I26 which engages a code bar release cam 54 carried by sleeve 48. A spring I21 urges the follower roller I26 of bail member I22 into engagement with the cam 54. At the proper time in the operating cycle, cam 54 will act to withdraw projection I24 from blocking engagt ment with levers I I1.

Simultaneously, therefore, with the setting of the vertical levers 25, the horizontal levers 91 will either be blocked or unblocked according to the particular permutation, so that when punch bail 3| is operated, the ball 92 will withdraw it projection 99 from beneath the horizontal levers 91, and those horizontal levers which are not blocked will be permitted to pivot in a clockwise direction as viewed in Fig. 2. The freeing or unblocking of a particular horizontal lever 91 al.- lows its associated bell crank 98 to pivot in a counterclockwise direction as viewed in Fig. 1 and further enables the clockwise pivotal movement of a particular vertical lever I84 and the clockwise pivotal movement of its associated bell crank I88, as viewed in Fig. 3, under the influence of springs H2 and H3. When the clutch assembly is released for rotation as magnet 44 becomes energized as previously explained, cam follower I26 rides upon a high portion of cam 54 and the extension I24 of the bail I22 is removed from the path of the levers H1 and springs I I8 and H9 are enabled to operate levers I I1 to shift their associated code bar to the right as shown in Fig. 3, if they are not blocked at this time by arms II4 of these bell crank levers I88 which have been freed for clockwise pivotal movement, as viewed in Fig. 3. If the vertical lever I84 is free for pivotabie movement as already explained, its associated bell crank I is permitted to move in a clockwise direction under the influence of springs H2 and H3. The code bars II5 therefore will be permutably conditioned in accordance with the particular combination effected by the depression of a particular key lever. In the rest position of cam 54, the extension I24 of bail I22 acts to restore levers H1 and code bars II5 to their original positions.

The printing mechanism about to be described is shown in detail in the patent to Morton et al., No. 1,745,633, and reference may be had to such patent for a detailed description thereof. The particular setting of the code bars I I5 enables one of a series of pull bars I3I to fall into a recess provided by the vertical alignment of a series of notches of the code bars adjacent the selected pull bar. This is accomplished under the influence of a spring I32 associated with each pull bar. Each pull bar I3I has formed thereon a projection I33 which is engageable by a bail member I34 carried upon a bail plunger I35 when the bail plunger is raised to its upward position as will hereafter appear. At the lower end of pull bars I3I there is formed a rack portion I30 adapted to engage with a pinion portion I31 of a type bar I38. When, therefore, the bail I 34 engages the projection I33 of a particular pull bar I3I, the pull bar is raised, and through its rack portion I36 causes the pivotabie movement of its associated type bar I38 whose type carrying member I39 strikes a ribbon (not shown) positioned above the tape and platen I48 which are in the path of the actuated y e bar, thus causing a printing impression to be made upon the tape. In operation of the proposed unit, the

perforated permutations in the tape will be six spaces from their associated printed representation so that a particular portion of a message can be readily found by an operator and the message may be conveniently inserted into a telegraph transmitter for transmitting purposes.

Motion is imparted to the bail plunger I35 (Fig. by means of a cam I4I. Mounted about a shaft I42 is a lever I43 and a lever I44, the lever I43 being urged toward an adjustable screw I45 carried by the lever I44 by means of a spring I45 and thus the levers I43 and I44 are designed to move as a unit. At the proper time in the operating cycle, a follower I41 associated with lever I44 will reach a drop-off portion of the cam HI, and under the influence of spring I45 the lever I43 will be pivoted. Due to the engagement of the extremity of lever I43 in the slot I48 of the bail plunger I35, the bail plunger will be raised to its vertical operating position to effect a printing or operating function.

In order to prevent a repeat operation of a character which may occur when an operator retains a finger on a particular key for too long a period of time, there is provided in Fig. 6, a simple nonrepeat circuit. When clutch magnet 44 is energized upon the operation of universal contacts 43, code release cam 54 will rotate, as explained, to pivot bail I22 in a counterclockwise direction as viewed in Fig. 3. Attached to arm I25 of bail I22 is a pin I which causes the closure of a contact pair 202 under the just mentioned conditions. This causes a momentary energization of a nonrepeat relay 203 over an r vious circuit and a consequent momentary attraction of tongues 204 and 205 associated therewith. If the operator has not at this time removed the finger from the particular key which was operated, such procedure will not cause continued energization of magnet 44 because by so doing battery will be supplied through the universal contact 43 and tongue 205 to nonrepeat relay 203 causing tongue 204 to maintain an open circuit condition to clutch magnet 44 until the operator releases the key.

It is thus seen that by the present arrangement there is provided a combined keyboard perforating and printing unit in which the depression of a particular key of the keyboard causes almost simultaneously the perforating of the tape and the printing thereon of a printed characteristic of the code combination which has been perforated in the tape. I

Numerous changes and modifications may be made in the proposed construction without departing from the spirit and scope of the appended claims.

What is claimed is:

1. A combination tape perforator and printer comprising tape punching instrumentalities, a punch selector mechanism for permutably selecting said instrumentalities, a keyboard for directly operating said selector mechanism, a tape printing mechanism, a type selector mechanism for controlling said printing mechanism in accordance with the setting and under the sole control of said punch selector mechanism, and ppwer means for operating said punching instrumentalities and said printing mechanism to thereby effect a combined tape printing and perforating operation on a tape.

2. In a combination taps perftrator and printer, tape punching instrum talities, a punch selector mechanism for pe utably controlling said instrumentalities, a eyboard for directly controlling said punch selector mechanism. a tape printing mechanism, atype selector mechanism for controlling said printing mechanism, transfer means for transferring a selection established by said punch selector mechanism directly to said type selector mechanism, means associated with said tape punching instrumentalities to effect a tape perforating operation in accordance with the operation of said punch selector mechanism, and means included in said printing mechanism to effect a tape printing operation in accordance with the operation of said type selector mechanism.

3. In a combined tape perforator and printer, a set of tape punching elements, a punch selector mechanism for permutably controlling said elements, a keyboard for controlling said punch selector mechanism, a tape printing mechanism, a type selector mechanism for controlling said printing mechanism, a linkage system for transferring permutations established by said punch selector mechanism directly to said type selector mechanism, and power means for operating said punching elements and said printing mechanism to effect combined tape perforating and printing operation in accordance with the permutations established by said punch selector mechanism.

4. In a combined tape recording and printing apparatus, a set of tape recording elements, a punch selector mechanism for permutably controlling said elements, manually operated means for controlling said punch selector mechanism, a tape printing mechanism, a type selector mechanism for controlling said printing mechanism, means for transferring permutations established by said punch selector mechanism directly to said type selector mechanism, and means for operating said recording elements and said printing mechanism in accordance with the permutations established by said punch selector mechanism to effect a combined tape printing and perforating operation.

5. In a combined tape perforating and printing apparatus, a set of tape punching elements, a punch selector mechanism for permutably controlling said elements, manually operated means for controlling said punch selector mechanism, a tape printing mechanism, a type selector mechanism for controlling said printing mechanism, means for transferring permutations established by said punch selector mechanism directly to said type selector mechanism, means for operating said punching elements, means for operating said printing mechanism, and power operated means for controlling the operation of each of said last-mentioned operating means to thereby eifect combined tape perforating and printing operations.

6. In a combined strip perforator and printer, a. manually operable keyboard, strip perforating means, a punch selector mechanism for permutably conditioning said strip perforating means which is controlled by said keyboard, strip printing means, a type selector mechanism for permutably conditioning said strip printing means, a lever system interposed between said selector mechanisms which is acted upon by said punch selector mechanism to condition said type selector mechanism, and power mechanism for operating said perforating and printing means immediately after they have been conditioned by their respective selector mechanism.

'7. In a keyboard controlled recorder, a series of key levers, a punch selector mechanism controlled by said key levers, a plurality of type elements, a type selector mechanism for selecting said elements for operation, a lever system interposed between said selector mechanisms whereby said type selector mechanism is controlled by said punch selector mechanism through the instrumentality of said lever system, and power means for operating said type elements after they have been selected.

8. In a keyboard controlled recorder, a series of key levers, a punch selector mechanism controlled by said key levers, a plurality of type elements, a type selector mechanism for selecting said type elements, means to limit the performance of said recorder invariably to a single operation upon each actuation of a key lever, an electrical contact associated with said type selector mechanism, means to automatically close said Y electrical contact upon operation of said type selector mechanism to operate said limiting means at predetermined times so as to establish a nonrepeat circuit during a cycle of operation of said type selector mechanism, a lever system interposed between said selector mechanisms whereby said type selector mechanism is controlled by said punch selector mechanism by means of said lever system, and power means for operating said type elements after they have been selected.

9. In a combined perforator and printer, a manually operable keyboard, a plurality of keys, perforating means, mechanism for controlling selectively said perforating means comprising a plurality of permutation bars operated by said keys and a plurality of interponents operated by said permutation bars to condition said perforating means for operation, printing means, mechanism for controlling selectively said printing means comprising a plurality of code bars and a plurality of levers engaging said code bars to condition said printing means for operation, a lever system interposed between said mechanisms whereby said mechanism for controlling selectively said perforating means controls said mechanism for controlling selectively said printing means through said lever system, a cam actuated bail to unlock said levers at predetermined times for movement in accordance with the operation of said lever system, and cam actuated means for operating said perforating and printing means after they have been selected.

10. In a combined perforator and printer, a manually operable keyboard, a plurality of keys, perforating means, mechanism for controlling selectively said perforating means comprising a plurality of permutation bars operated by said keys and a plurality of interponents operated by said permutation bars to condition said perforating means for operation, printing means, mechanism for controlling selectively said printing means comprising a plurality of code bars and a plurality of levers engaging said bars to condition and printing means for operation, a

lever system including a plurality of blocking in-' govern permissively the positionment of said plurality of levers to impart to said code bars movements in accordance with the settings of said in strumentalities, and means for operating sale perforating and printing means after they have been selected.

11. In a combined perforator and printer, a manually operable keyboard, a plurality of keys, perforating means, mechanism for controlling selectively said perforating means comprising a plurality of permutation bars operated by said keys and a, plurality of interponents operated by said permutation bars to condition said perforating means for operation, printing means, mechanism for controlling selectively said printing means comprising a plurality of code bars displaceable in accordance with the setting of said permutation bars to condition said printing means for operation, a lever system interposed between said mechanisms, means effective to govern permissively the positionment of the levers of saidlever system in accordance with the setting of said permutation bars whereby said mechanism for controlling selectively said perforating means controls said mechanism for controlling selectively said printing means, and means for operating said perforating and printing means after they have been conditioned.

12. In a combined perforator and printer, a manually operable keyboard, a plurality of keys, perforating means, mechanism for controlling selectively said perforating means comprising a plurality of permutation bars operated by said keys and a plurality of interponents operated by said permutation bars to condition said perforating means for operation, printing means, mechanism for controlling selectively said printing means comprisin a plurality of code bars displaceable in accordance with the setting of said permutation bars and a plurality of levers engaging said code bars to condition said printing means for operation, a lever system including a plurality of blocking instrumentalities, one individual to each code bar interposed between said mechanisms whereby said mechanism for controlling selectively said perforating means controls said mechanism for controlling selectively said printing means through said lever syste-.1, means effective to govern permissively the pcsttionment of the components of said lever system in accordance with the setting of said permutation bars, means effective to govern permissively the positionment of said plurality of levers to impart to said code bars movements in accordance with the setting of said instrumentalities, and means for operating said perforating and printing means after they have been conditioned.

JOHN C. CARR. MAURUS T. GOETZ.

' CERTIFICATE or CORRECTION. Patent No. ,3 5,88 March 11;, 191 1;.

JOHN O. CARR, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, first column,- line 67, claim 10. for "and" read "adds-fend that the said Lettera Patent should be read with 1111s correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 50th day of Ma A. D. 191 1;.

Leslie Frazer (Seal) Acting Commissioner of Patents.

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