US2240563A

US2240563A - Zero eliminating means

Info

Publication number: US2240563A
Application number: US279013A
Authority: US
Inventors: Clair D Lake; Francis E Hamilton
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1938-08-31
Filing date: 1939-06-14
Publication date: 1941-05-06
Anticipated expiration: 1958-05-06
Also published as: US2255011A; GB532200A

Description

May 6, 1941. C. D. LAKE ET AL 2,240,563

ZERO ELIMINATlNG MEANS Original Filed Aug. 3l, 1958 11 Sheets-Sheet 1 ATTOR EY May 6, 1941.

c. D. LAKE ET Al. ZEROELIMINATING MEANS original Filed Aug.. 51, 1938 ll/Illl1lIll/1llllllllll/l/ll/lllllll/lll/ll/lll//ll 11 Sheets-Sheet 2 IIIA ATTORNEY May 6, 1941.

C. D. LAKE ET AL ZERO ELIMINATING MEANS original Filed Aug. 31, 1958 1l Sheets-Sheet 3 ATTORNEY May e, 1941. C. D. LAKE ETAL 2,240,563

ZERO ELIMINATING MEANS Original Filed Aug. 341, 193B 1l Sheets-Sheet 4 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIlll'4 l' ATTORNEY May 6, 1941. C. D LAKE ETAL 2,240,563

l ZERO ELIMINATINGMEA'NS Original Filed Aug. 5l, 1938 ll Sheets--Shee'cl 5 fwn/525225 ATTORNEY May 6, 1941.

C D. LAKE ETAL ZERO ELIMINATING MEANS 11' Sheecs-Sheet 6 original Filed Aug. 31, 1938 @www 'l SYM May 6, 1941.

C. D. LAKE ET AL ZERO ELIMINATI'NG MEANS original Filed Aug. s1, ,1938

1l Sheets-Sheet '7 im f May 61 I A C. D. LAKE E'L ZERO ELIMINATING MEANS O rigin'al Filed Aug. 31, 1938 1l Sheets-Sheet 8 HGM-v `1 3'@ ATTORNEY May 6, 1941. c. D. LAKE ET AL ZERO ELIMINATING MEANS original Filed Aug. 51, 1938 11 sheets-sheet Q ATTORNEY und..

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May 6, 1.941- c. D. LAKE ETAL 2,240,563

ZEROl ELIMINAT ING MEANS originalvFned-.Aug 51, 1958 11 sheets-sheet, 1o

FIG. Z1

ATTORNEY May-6, 1941.

c. D. LAKE E-rffh.v ZERO ELLMINATING MEANs Original Filedv Aug. 3l, 1938 l1 Sheets-Sheet l1 MMM AToRNEY Patented May 6, 1941 UNITED STATES PATENT OFFICE znno ELnvnNs'rING MEANS Clair D. Lake, Binghamton, and -Francis E.

Hamilton, Endicott, N. Y., assignors to International Business Machines Corp., New York, N. Y., a. corporation of New York Original application August 31, 1938,4Serial No.

1939,. Serial N0. 279,013

Claims. (Cl. IS7-20) This case relates to a. machine for automatically transcribing information derived from a and there are as many such columns as the number of denominational orders of the highest numerical value which may be perforated into the numerical field. When the field is to be perforated with a numerical item having fewer denominational orders than the number of columns, it is the practice to punch zero designations into those columns preceding the column bearing the rst significant gure.,

The object of the present invention is to provide novel means toeliminate the recording or transcribing of zero designations of a numerical card field preceding the first significant iigure designation of the eld.

More specically, this object includes the provision of means to prevent the analysis of zero designations preceding the I irst signicant figure of a numerical representation in the numerical card neld.

The transcribing apparatus with which the present invention is associated comprises means controlled in succession by the numerical designations of the record card for recording on a record receiving sheet the digits of the number in succession. The invention contemplates the provision of means for preventing the zero digit desrecorded and instead causing an intra-line spac- Y ing of -the record receiving sheet for each of the card columns bearing a zero designation preceding the rstsignicant gure.

The machine operates cyclically on the record cards, performing one cycle for each card. A stack or series of related record cards may have correspondingly 'located numerical iields. It is an object of the invention to provide zero eliminating means which is automatically placed in effect at the same time during'each of successive cycles of operation on suc-cessive record cards to Divided and this application June 14,

prevent the recording of zeros preceding the rst .significant iigure designated in the numerical field of successive cards. Y

. The latter object may be stated as the provision of program means for eliminating the recording or transcribing of zeros preceding the first significant digit of the number designated in columns of a numerical ield of a series of records. Further, it is contemplated to provide such program means as is set-table in accordance 'with differently located numerical card fields.

Other objects of the invention will be pointed out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is a plan View of the machine with the control section uncovered;

Fig. 2 'is a section along 1ines 2-2 of Fig. 1;

Fig. 3 is a detail sectional view through a part of the card stacking unit of the control section taken-along lines 3-3 of Fig. 1;

Fig. 4 .is a detail view of part of the analyzer for the cards;

Fig. 5 is an enlarged plan view of the drive mechanism and part of the control section;

Fig.; 6 is an enlarged side section through the transcribing unit, taken along lines 6-6 of Fig. 1;

Fig. 7 is a. front, sectional; view of the translating portion of the transcribing unit;

Fig. 8 isa top sectional view of the translating mechanism;

Fig. 9 is a front view of the upper four combs orf the translating pdrtion; v

Fig. 1Q is a side section through the translating system taken along lines lll-lll'vo'f Fig. 8;vv

Fig. 11 is adetail view of restoring means for the comb bars of the zoningor translating system;

Fig. 12 is a sectional view of planetary gearing forming part of the drive mechanism taken along lines 'l2- I2 o f Fig. 5; Y

Fig. 13 is a. section along lines |3-I3 of Fig. 8

Fig. 14 is a detail plan View of switching meansin the recording' unit and controlled by the carriage return or tabular operating levers;

Fig. 15 is a detail plan view of contacts controlled by a left hand margin stop in the recording unit.

Fig. 16 is a plan section through the card cycle program drum and also showing the associated contact means;

Fig. 17 is a side view of thecard cycle program drum and the zero elimination contacts controlled thereby;

Fig. 18 is a detail side sectional View of the main clutch and its control magnet;

Fig. 19 is a detail View of the clutch arm contacts;

Fig. 20 is a time chart of the card cycle;

Fig. 21 is a time chart of a zoning cycle with an indication of the action of the card feed means during the zoning cycle;

Fig. 22 shows a tabulating card operated on by the machine and punched with the coded designations for the various functions, and;

Fig. 23 is the circuit diagram.

TH 1c TRANSCMBING UNi'r While the invention may make use of any suitable recording unit, it is preferred, for illustrative purposes, to disclose the invention herein in connection with a recording apparatus, the general principles of which are disclosed in Patents Nos. 1,777,055 and 1,873,512. Fig. 1 shows the arrangement of levers lll for causing the operation of transcribing elements and related control devices. The several levers I may be distinguished by appending to the general reference character a supplementary reference character denoting the particular function or operation controlled by the operating lever. Thus, levers III-A to Z, Il to 9, cause operation of transcribing elements to record characters A to Z, 0 to 9; lever IlJ--TAB controls tabulating operation; lever Ill-SH controls the case shift mechanism; lever II'I-CR controls the carriage return operation; and lever IU--SP controls the operation of intra-line spacing means.

Referring to Fig. 6, depression of a lever I0 releases a latch II from a cam I2 permitting the cam to be forced by a lever I3 against a constantly rotating friction shaft I4. The shaft rotates the cam, causing the carrier I of the cam to rock in a direction for depressing connected link I6. This link, through a linkage I`I, propels a type bar I8, mounted on type basket I9, against the sheet of paper P on the platen 20, thereby typing the character corresponding to the depressedlever I0. During the end `of the stroke of type bar I8, it strikes a universal bar 22 to actuate the escapement control 23 for effecting a character or intra-line spacing operation of the carriage 24. Operation of the space lever IO-SP acts through associated elements II, I2, I3, I5', and I 6 to operate a linkage 25 for actuating escapement control 23 also to cause an intra-line spacing operation of carriage 24.

A special, normally closed switch 28 (Fig. 14) is located at the rear of the recording unit. The long, spring blade of this switch is engaged with a roller 30, of insulating material, carried by one arm of a lever 3l. This lever is the back-space interlock, which as described in Patent 1,873,553 is rocked by the escapement pawl release lever 32 While the carriage is tabulating. Lever 32 is also actuated during line space or carriage return operationto rock back-space interlock lever 3|, as described in above-mentioned Patent 1,955,614. When lever 3l is rocked, its roller 3D opens switch 28, which remains open until the completion of either'the carriage return or the tabulating operation, whichever is taking place. The purpose of switch 28 will be explained hereinafter, in connection with the circuits.

Another special, normally closed ,switch 33 is provided LFig. at the rear of the recording unit, which is opened when an insulating tab 33a on its long, spring blade 33D is engaged by the special extension 34a of the settablc beginning of the line margin stop 34. The purpose of switch 33 will be explained in connection with the circuits.

lhceom) CARD ANI) Com;

The record card T, as indicated in Fig. 22, has eighty designation columns, each with twelve index points or perforation-receiving positions known as the 9, 3 I, (l, II, and I2 positions, and perforations in which are known as the 9, 8 I, 0, II, and I2 perforations.

The columns of a card T are perforated according to the information to be listed or transcribed under control of the card, and the various codes designating the information are shown in Fig. 22. The codes may be considered as divided into several zones. The single point Zone includes single perforations in any of the 9, 8 I, 0, II, and I2 positions of a card column. The 9, 8 I, I)

perforations in this zone represent, respectively, these several digits, the I I perforation represents a tabular operation, and the I2 perforation represents a carriage return operation. The I2 zone comprises a common I2 perforation plus one of the perforations I to 9, representing letters A to I. The II zone comprises the common II perforation plus one of the I to 9 perforations, representing letters J to R. The II zone comprises the common D perforation accompanied by a 2 to 9 perforation, representing letters S to Z. The II-I2 zone comprises common iI-I2 perforations plus a I to I perforation, representing different symbols. The II-I2 code alone represents a high speed (H. S.) eject operation to be controlled by the card. In each combination hole code, the common zone perforation or perforations may be referred to as the zone distinguishing perforation, point, or characteristic. In the single point zone, the imperforate portion of the column may be considered as the zone characteristie. The character or function distinguishing points of each zone are the I to 9 perforations which may be referred to as the intrazone points or-characteristics.

Dmvr: MECHANisir Referring to Figs. 1 and 5, the drive mechanism includes a motor 35. Motor 35 through a coupling 36 rotates a pinion 3l which drives a gear 38 on a shaft 39 carrying a worm 40. Worm 4I) meshes with a warm wheel 42 on a sleeve shaft 43 rotatably mounted on a shaft 44.

Main clutch.-One end of the sleeve shaft 43 is provided with a driving clutch ratchet 45 (also see Fig. 18) having four teeth, ninety degrees apart. Fixed to shaft 44, adjacent driving ratchet 45, is a plate 4B formed with four equally 'spaced notches 46a ninety degrees apart. Loosely carried by shaft 44, adjacent plate 46, is a cam disk 41 with four cam teeth 41a, each adiacent one notch 46. Plate 46 pivotally carries a clutch pawl 48 having an intermediate tooth 48a to engage a tooth of driving ratchet 45. The free end of pawl 48 carries a stud 48D passing through a hole 4Gb in plate 46. Adjacent stud 48h, pawl 48 has a pin 48e connected by a spring 49 to a pin 46c on plate 46. rIhe spring tends to move pawl 48 inwardly to engage its tooth 48a with a-tooth of driving ratchet 45, but this action is prevented while the high cam portion of a tooth 41a of disk 4'I is engaging stud 48h of the pawl. The disk 4'I is held in such a declutching position by engagement of the nat side of one of its teeth 41a with the nose of a latch arm 50 fixed to one end of a shaft which at the opposite end carries the armature lever 52 of main clutch magnet 53. The lower, free end of armature lever 52 is located between a pair of adjustable stop screws 54 which limit the retracted and attracted positions of the armature lever, its shaft 5| and latch arm 50. A spring 55 connected to armature lever 52 and a spring 56 connected to latch arm 50 combine to hold the armature lever in retracted position, with the latch arm in position to engage a tooth of disk 41. Spring 56 connects arm 50 to an impositive latch arm 51 provided with a roller 51a ridingl on the periphery of disk 46, and adapted to enter a notch 46a of plate 46 to detain, impositively,

-this plate in one of the four positions, ninety degrees apart, at which the declutching takes effect. Arm 51 is fast to shaft 58. which carries a dependent" arm 59V. (Fig. 19) located between the

adjacentspring blades

60 and 6| of a pair of

switches

62 and 63 tending to open. When arm. 51a is seated in a notch 46a, switch 62 is closed and switch 63 open. These switches may be referred to as the clutch arm contacts. During rotation of disk- 46, arm 51 will be cammed out of notch 46a, causing arm 59 to close switch 63 and permit switch 62 to open. The arm 51 will move into a notch 46a every ninety degrees` of rotation of plate 46, intermittently closing switch 62 and opening switch 63.

When main clutch magnet 53 is energized, it rocks armature lever 52, shaft 5|, and latch arm 50 counterclockwise (Fig. 18). withdraws from an arm 41a, releasing cam disk 41 and enabling spring 49 to move stud 48h inwardly. The stud acts against the curved cam side of a tooth 41a of disk 41 to rock the disk clockwise, bringing the tooth 41a, previously engaged by arm 5 0 below the nose of the latter. As pawl 46 was rocked inwardly by spring 49, its clutching tooth 48a engaged with a tooth of driving ratchet 45, thereby-coupling the driven shaft 44 to the sleeve shaft 43 of the ratchet. With pawl 48 in its inner, clutching position, stud 48h thereof is seated in the crotchv between two teeth of camv disk 41, forcing the latter disk to rotate with the pawl. Upon deenergization of main clutch magnet 53, latch 50 intercepts one of the four teeth of disk 41, rocking the latter to cam the pawl 48 out of clutching engagement with ratchet 45. Referring to Figs, 5 and 1,2, driven shaft 44 rigidly carries a pinion 65, meshed with three sun gears 66V rotatably carried by the three arms of a carrier 61 which'is fixed at its center to the reduced end of the hub sleeve 68a of a normally stationary disk 68. With disk 68 stationary, carrier 61 is at rest, and sun gears 66 are capable only of a simple rotation by pinion 65. Rigid with each gear 66 is a pinion 69 meshed with a gear fast to oneend of a sleeve 1| surrounding shaft 44. To the opposite'end of the sleeve 1| is fast a pair of

gears

12 and 13. With shaft 44 coupled, as previously eX- plained, to driving ratchet 45 for rotation, and with driven clutch disk 68 held against move- Ament, pinion 65 of shaft 44 actuates gearing 66,

69, 10, 12, and 13 as a simple train of gearing.

speed.

Gears

12 and 13 on shaft. 1| drive elements of the control section including card feed means which wil1`be described later. During normal speed operation of these gears,`Y the card is fed at a speed such that one column thereof traverses a given reference line during one-quarter turn of 75 The latch arm-

Gears

12 and 13 then rotateV at normal I main clutch shaft 44. The period of such travel of a card column is equal to but not coincident with one cycle point of the card cycle indicated in Fig. 20. The card cycle may be considered as the interval between arrival at a reference line of similar points of successive cards. During eighty points of the card cycle, the eighty card columns of a card traverse analyzing means described subsequently. A gap of ten cycle points then occurs before the next card cycle begins on the next card.

Zoning cycle commutators-.Shaft 39 (Fig. 5) is driven continuously by the motor and carries commutators HS (also see Fig. 2 1) which may be referred to as the zoning cycle commutators. The speed of shaft 39 is four times that of main clutch shaft 44, so that one revolution of this shaft, as well as of its commutators HS corresponds to a quarter turn of shaft '44, which in turn corresponds, during normal card feed, to one card cycle point, as explained before. The revolution of shaft 39 may be referred to as the zoning-cycle (Fig. 21) which during normal card feed, is equivalent to one card cycle point.

Shaft 39 also carries a zoning cycle index wheel ||0 to index the zoning cycle positions of shaft 39 and the elementactuated thereby.

To the left end (Fig. 1) of shaft 39 is fixed a bevel gear ||2 which meshes with a bevel gear ||3 on a downwardly inclined shaft ||5.

Drive for zoning unit-Shaft ||5 at its lower end has a bevel gear ||1 meshed with a bevel gear |I8 on a horizontal shaft ||9 (see Figs. l, 2, and '7) Shaft ||9 is provided with a. pin 20 seated in the bayonet slot |2| of a sleeve coupling |22 mounted on the shaft. In line with shaft |I9 is a shaft |23 which has a transverse, coupling pin |23a (Fig. 7) slidable into the open, end slots|22a of coupling |22. A spring |24 urges coupling |22 towards the left (Figs. 2 and '7) for maintaining the rear end of the horizontal portion of the bayonet slot |2| in engagement with pin |20, In this position, as indicated in Fig. 7, the slots |22a of the coupling sleeve 22 are receiving the pin |23a, thereby coupling shafts ||9 and |23 for common rotation. To uncouple shaft |23 `from shaft ||9, coupling sleeve |22 is forced rearwardly until pin |2| is at the vertical portion of the bayonet slot, withdrawing slots |22a from pin |23a, and then the coupling sleeve is rotated to engage the pin |20 in the vertical portion of the bayonet slot, thereby maintainingthe coupling sleeve in rear, release position.

The main parts' of the actuating mechanism have now been explained.v The units of the machine driven thereby, the control section and the code translating or zoning unit will be explained in order,

The control section (card handling section)l |28. This dis/k |30 is suitably graduated to indicate the card cycle, and may be referred to as the card cycle indicator.

Card cycle program merma-One end of card cycle shaft |29 fixedly carries a driver |43 (see Figs. 1, 16, and 1'1) having a pair of spaced studs |43a vand |43b to t into holes in the side of a card cycle program drum |44. The studs are of different sizes and their receiving holes are of corresponding sizes, so as to permit the drum to be placed'on the driver in predetermined relation thereto. The hub of driver |43 is hollow to rotatably and sldably receive the shank of a hand knob |45, urged inwardly towards the side of drum |44 by a coil spring |46 inside the hub of the driver. Hand knob |45 is provided with -a clamping block |45' rectangular in shape, adapt'- ed to move through a similarly shaped hole |44' in the program drum. By turning the knob |45 to aline block |45 wit-h hole |44', the drum |44 is left free to be removed from driver |43. By turning the knob to bring its plate |45 at right angles to hole |44 (as indicated in Fig. 1'1) the block |45', under the influence of spring |46, firmly clamps the drum to driver |43.

In above manner, card cycle program drum |44 is rigidly but removably coupled to shaft |29 fer one revolution each card cycle.

Drum |44 is constructed similarly to a spool with side flanges |44a. Each flange is similarly provided with ninety, equally spaced, radial slots |44b. There are ninety points in a card cycle (see Fig. 20), so that each of the ninety slots |4417 corresponds to a definite point of the card cycle. 'I'he slots are numbered to indicate the points of the cycle to which they correspond. Each of flanges |44a is formed below the notches |44b with an inwardly extending annular bead |44c. Each of the notches |441) is designed to insertibly receive a Spring Clip |47- EaCh Clip iS generally U-shaped with the legs |41a bent in the form of angles, with the intermediate portions |41b projecting outwardly beyond the legs, and with the cross piece or head |41c connecting the spaced intermediate portions and legs. To place a clip on the drum flanges |44a, the legs of the clip are pinched together to enable them to be inserted between the flanges with the apexes of the leg angles located below beads |440. As the clip is inserted, the intermediate portion |41b moves into the selected alined slots |44b of the two flanges, with the head |41c extending across the flanges and between the allned slots. The legs of the clip, after insertion, tend to spread, thereby gripping the insides of the flanges, while the beads |44c engage the leg angles to prevent radially outward movement of the clipl Since the intermediate portion |4113 o! the clip is seated in the alined slots |441), the

clip is held against circumferential movement. Thus, clips |41 may be inserted on the drum 44 at desired points corresponding to points of the card cycle.

Adjacent drum 44 is a subframe |48 mounting a shaft |54 rotatably carrying a pinion |68. The forward, hook end of a spring blade |18 is seated between the teeth of pinion |68 and is below 'a companion blade |1|, the blades carrying contacts |12 between them. When a head of clip |41 rides past pinion |68, it imparts an eighth turn thereto, rotating it a single tooth distance, As pinion |68 rotates, a tooth thereof transiently lifts blade |18, closing contacts 12 momentarily. Contacts |12 are the zero elimination contacts, which, in a manner to be explained later in connection with the circuit, eliminate the reading out and printing of zero designations from columns of a numerical card field preceding the column bearing the first significant digit 1 to 9.

Card feed rolls and analy2er.-Gear 12 of the clutch-driven shaft 1| meshes with a gear |15 on the shaft of lower card feed roller |38 (see Figs. 1, 2, and 4). The shaft of the lower roller has a gear |16 meshed with a gear |11 on the shaft of upper feed roller |31, so that the upper and lower feed rollers rotate in unison. As previously described, picker blade |35' feeds a card T out .of supply magazine |36 and into the grip of feed rollers |31 and |38 each card cycle. The feed rollers continue the feed of the card moving it at the rate of one column each cycle point.

Between the mouth of the supply magazine and feed rollers |31 and |38 is arranged a. card lever |18 (Fig. 2) which is engaged and cammed down by the card traveling to the feed rollers, for closing card lever contacts |19 during travel of the card.

Upper feed roller |31 is a conductive roller acting as the common of the card analyzing means. Coacting with roller |31 are thirteen sensing brushes SB-S to 8, i2, and c, to respectively sense index positions 8 to 8, and i2 of a card column, while brush SB-c acts as a common return brush, being located to the side of the card and in constant engagement with roller |31 (see Fig. 4) Lower feed roller |38 is grooved s0 as to hold the free ends of the brushes in predetermined transverse spacing, and enable the brushes to extend substantially intangential engagement with the lowest part of the feed and contact roller |31 in order to sense the card.

Thev labove described card sensing means. SB`|I31, analyzes the perforations of the card columns insuccession, one column after another, to control the decoding, interpreting, or zoning system to be described later.

The stack of ejected cards in delivery magazine |82 rests on a bottom plate |98 hinged at its front end on a pivot I9I To the bottom of plate |98 is fast a bracket |92, passing through a slot |93 in the side wall of the magazine and rigidly provided outside the latter wall with a rack sector |94. Sector |94 meshes with a gear |95 (see Figs. 2 and 3) coacting with a. horizontal rack |98l provided on a sleeve |91 which slides inside a xed tube |98. The rack |98 passes through a narrow slot in tube |98, preventing rotation of the sleeve |91. Between tube |98 and sleeve .|91 is a coil spring |99 tending vto move the sleeve to the left (Fig. 3). With no cards on plate |99, spring |99 is-holding sleeve |91 at its left hand limit. As the cards stack up on plate i90, their weight depresses rack sector |94 which, through gear E95 and rack |98, causes sleeve |91 to move to the right, against resistance of spring |99. When the delivery magazine is full, the weight of the stack has moved bottom plate |90 downwardly to an extent suilicient to engage the lower edge of bracket |92 with an insulating tab 209'xed to the lower blade 20| of a switch 293, thereby opening such switch to interrupt operation of the card feed unit, in a manner which will be explained later.

Zoning unit The zoning unit includes twelve horizontal,`

parallel combination or comb bars 2I0, disposed one above another, and located at a distance below the typewriter keyboard, as indicated in Figs. 6, l0, and 13. Each comb bar corresponds to an index position of a card column and may be dls-. tinguished by referring to it as the comb bar of the correspondingly termed index position. Thus,

bars 2|09, 8 I, 0, II. I2 correspond to index

positions

9, 8 I, 0, II, I2, and their positions are indicated in Fig. 13.

, Each of the comb bars 2I|l is formed with front lugs 2I0a arranged for combination with lugs of the other combs in governing interpretation of a perforated designation code. Each comb also has a single rear lug 2I9b, and the lugs 2I0b of the several combs are staggered horizontally to enable each lug to be engaged by the free end of one of the twelve staggered armature levers'2l I, as indicated in Figs. 6 and 8. Each armature lever 2| is operated by one of the twelve zone magnets 2|2, arranged in two horizontal layersand staggered to enable the armature levers to dispose their free ends in engagement with the staggered lugs 2I0b of the several combs 2|0. A pair of opposite. end guide combs 2|3 and a central guide comb 2H (Fig. 7) guide the combs 2I9 for horizontally slidable movement. A spring 2| 8 connected to each comb 2 II), urges vthe latter towards the left to a normal position, determined by engagement of a screw 2I8 (Figs. 6 and 8) carried by the armature 2II with' the frame plate 2I1.

Upon energization of a. zone 'magnet 2I2, it rocks its armature lever 2II counterclockwise (Fig. 8). causing the armature lever; by engage- 'ment with the associated lug 2| 8b, to shift the corresponding comb bar 2|9 to the right.

Extending in front of the )combs 2 I8 are a plulrality of spaced vertical levers 2I8 urged towards the combs by springs 2| 9. The lower tip of. each lever follows a cam 228 extending across allthe levers and xed to shaft |23. As previously explained under the heading Drive mechanism,

shaft' |23 is continuously rotated, through a coupling |27.. from motor-driven continuously rotating shaft II9. Shaft I 23 makes one revolution each zoning cycle- (Fig. 21),- and during normal card feed, one zoning cycle corresponds to a card cycle point.- Once each zoning cycle, cam 228 releases levers 2I8 for forward movement. by springs 2 I 9. During each zoning cycle occurring between 1 and 80 of the card cycle (see Fig. 20) vduring normal card feed, a column code analyzing period is provided during which analyzing means SB-l 31 is effective to analyze one card column for a designation or code. vIn accordance with the analysis, selected combs 2I8 are shifted to the right, to displace their front comb lugs 2I0a from in front of the lever 2I8 corresponding to the character or function represented by the analyzed perforated code in the active card column. There will be no other lugs 2|0a in front of the latter lever 2I8 but one or more lugs remain in front of the rest of the levers 2I8. Accordingly, when cam 220 releases levers 2 I8 for inward movement, only one of these levers is enabled to move inwardly to a sulcient extent to bring the shoulder 2I8a of the lever above a common lift bail 22|. Bail 22| extends across all the levers 2I8 and is provided with rollers 222 at leach side following cams 223 xed to zoning cycle shaft |23. Thus, for each cycle point or analysis of one card column, bail 22| is given one reciprocation. During the rise of the bail, by engagement with the shoulder 2 |8a of that vertical lever 2I8 which has been released by the combs 2I0, the bail lifts the lever.

The upper end of eachlever 2I8 is pivotally connected to a lever 224 urged counterclockwise (Figs. 6 and 13) by a spring 225 and pivoted to a link 228. Each link 228 is provided at its upper end with a stud 228a freely passing through a vertically elongated slot 221 in an associated one of the horizontal, operating levers I9 of the transscribing unit. To yieldably and releasably maintain the side of link 228 firmly against the side of the associated lever I8 and prevent accidental withdrawal of stud 228cv, a nat spring 228 is xed to the side of each link 221, the spring and link engaging the associated lever l0 between them. When the lever 2I8, which has been selected by combs 2I8, islifted by bail 22|, it rocks lever 224 clockwise (Fig. 6) against resistance of spring 225, thereby lowering link 228 to depress the corresponding operating lever I. Depression of the lever [Il effects the recording or other function of the transcribing unit, as denoted by the code in the analyzed card column.

As indicated in Fig. 9, the combs 2 I8 have front lugs 2|8sp. The lugs 2I||sp of the twelve combs are in vertical alnement and located directly to the left (Figs. 'I and 8) ofthe vertical lever 2|8sp. No matter which code combination is sensed on a card T, at least one of the combs 2I|I will be moved te the right, thereby placing its lug zum4 lever I8-SP. Thus, when any code is sensed and interpreted, causing actuation of one or more of the combs 2 I 9, lever 2 I8sp will be blocked against operation, permitting the intra-line spacing of the carriage 2| (see Fig. 6) to occur only as the usual incident to the operation of the lever i8 corresponding to the character whose designation has been found in the analyzed card column.

When the card column traversing the analyzing means is blank, Vthen an' operation of intra-line space lever ID--SP is indicated. Thus, failure to sense any perforation in a card column leaves all the combs 2I||jin their normal positions, with all the lugs 2I8sp out of the path of lever 2I8sp which thereby vis enabled to move forward to cooperate with lift bail 22| for operating space lever |-SP to effect an intraline spacing ofthe carriage 24.

During certain operations, including carriage return or line space operation, for the period of each cycle between the departure of one card from the analyzing means and the arrival of the next card, and, whenever main clutch shaft 44 is at rest, none of the combs ZID. is actuated. Accordingly, operation of intra-line space lever IO-SP would be effected, undesirably, under control of operating lever 2|Bsp each cycle of shaft |23, unless provision were made to the contrary. To lock out the operating lever 2 lsp under the above conditions, a space lock magnet 230 (Figs. 8 and 13) is provided, energization of which rocks its armature 23| downwardly to rock a lever 232 clockwise (Fig. 13) against resistance of a spring similar to spring 225. Pivotally suspended from lever 232 is a lock arm 233 urged towards the right (Fig. 13) by a spring similar to spring 2|9. The lower end of arm 233 is formed with a bent lug 233e, from an intermediate portion of which a tab 233b projects parallel to the side of arm 233. The inward movement of arm 233 is limited by engagement of tab 2332 thereof (see also Fig. 8) with the front of the bottom guide comb 234 of the operating levers 2|8. Thus, upon clockwise rocking of lever 232, effected by armature 23| upon energizatlon of magnet 230, lock arm 233 will be moved vertically upward. The outer, reduced end of lug 233:1. of arm 233 overlaps operating lever 2|8sp and normally lies against the back of the lever, entirely below and out of a notch 2|8'sp formed on the space operating lever (see Fig. 13). When lock arm 233 is lifted as a result of energization of magnet 230, lug 233 moves upwardly into notch 2|8'sp, thereby locking lever 2|8sp against inward movement. Thus, even though none of combs 2|0 is actuated, if magnet 230 is energized, it will cause locking of the space bar operating lever 2|8sp.

To time the impulses to space lock magnet 230 for each column or cycle point, a switch 235 is provided which is closed by lift bail 22| when the bail is in lower position and which opens when bail 22| rises. Since bail 22| is given one reciprocation each cycle point, switch 235 will open and close once for each cycle point. It is to be understood, however, that switch 235 does not, of itself, close the circuit of magnet 230. The latter circuit will be traced hereinafter.

A 12 perforation occurring alone in a card column indicates a carriage return operation, and analysis of this perforation energizes the magnet 2|2 of comb `ZID-l2. When comb 2|0|2 alone is operated, the carriage return lever 2|8CR, (Figs. 7, 8, and 10) is released for coaction with lift bail 22|. As lever 2|8CR is lifted by ball 22|, it rocks the connected lever 224 counterclockwise (Fig. Due to the operation of lever 2| BCR, the carriage return operating lever lll-CR (Figs. 1 and 7) is depressed to effect a carriage return operation of the carriage 24 (Figs. 1 and 6), and as an incident to the carriage return, a line spacing operation occurs, as usual.

Towards the latterpart of the revolution of shaft |23 of the zoningsystem, a cam 250 thereof (Figs. 7. 8, and 10) effects clockwise rocking (Fig. 10) of a lever 25|. The upper end of lever 25| bears against the arm 252:1 of a knock-off bail 252 (also see Fig. 11)', which has an arm 252b extending vertically across the right hand The mechanical features of the zoning system' have been explained above. Further explanation of its operation will be given as an incident to the description of the circuits hereinafter.

CIRCUITS, TIMING, AND OPERATION Referring to Fig. 23, with main line switch SW closed, motor 35 is set in operation, the circuit therefor going through safety contacts |4|.

In the following description, it is assumed the parts are initially in 0 cycle position of the card cycle (see Fig. 20).

Having brought the first line of a bill form to printing position on platen 20 of the recording unit, and having placed the stack of cards 'I bearing the data for the bills in supply magazine |36, the operator may now start operations by depressing the start key to close start key contacts ST, forming the following circuit (middle of Fig. 23)

Start key circuit.-Fiom the left side, through contacts ST, normally closed relay contacts R-|lb, relay coil R-l, to the right side.

Due to energization of coil R--l by the Start key circuit, relay contacts R-lb are closed to form the following main clutch circuit (bottom of Fig. 23)

Main clutch magnet circuit-From the left side, through normally closed recorder unit contacts 28 (also see Fig. 14), normally closed relay contacts R-3b, now-closed relay contacts R-Tb,

normally closed relay contacts R--22b, R-Ilc, jumper wire 623, normally closed relay contacts R-|0b, main clutch magnet 53 (also see' Fig. 5), and to the right side.

With main clutch magnet 53 energized, shaft 1| is now acting through gears 'l2- and 13 to actuate the card feeding means. At the 0 cycle point, picker |35 (see Fig. 2) is in advanced position, ready to'begin its return stroke (see Fig. 20). As the machine is now set in operation for the first card cycle, the picker is moved through its return stroke, and at the end of this stroke, at about the 64th cycle point, the picker is at the rear of the bottom card T in magazine I 36 (see Fig. 2). The picker then dwells until about 70 of the card cycle at which point it begins its forward stroke to'feed the bottom card to the feed rollers |31 and |38.

'I'he perforation field or width of the first card column or column 1 of the card reaches the line of sensing brushes SB shortly before the l cycle point of the card cycle, between the th and 90th divisions of the 0 cycle point, as indicated by the upper, Card brush timing line, in the zoning cycle chart, Fig. 21. The "Card brush line indicates the periods of sensing of perforations in successive card columns by brushes SB. Between 0 and 55 of one zoning cycle, the major, latter portion of a hole in one column is sensed and during this period, commutator HS-I is made, so as to render thesensing effective to perform an analysis, as will be further explained hereinafter. After this effective analyzing period of one card column during one zoning cycle, the

brushes SB sense, between 85 and-the end of the zoning cycle, the beginning of the perforation of. the next column, but with HS-I broken, this sensing-is not effective to perform an analysis.

During the first card cycle Fig. 20) the picker started moving the iirst card out of magazine |36 and to feed rolls |31'and |38. During its travel to the feed Irolls, the card engages card lever |18 and cams it down to close card lever contacts |19 (Fig. 2) after the beginning `of the 82nd cycle point. Closure of contacts |19 establishes the following circuit (top of Fig. 23)

Card lever circuit-From the left side, through contacts |19, relay coils R| and R2, to the right side.

The operator need only hold the start key de- -pressed until the first card enters the feed rolls |31 and |38, since by then card lever contacts |19 have closed, and the Card lever circuit has been established to energize coils R-I and Rf-2. Coil `lit-2 now has closed contacts Rf-2b to shunt start key contacts ST through the following cir#- cuit:

Start key shunt circuit- From the left side, through relay contacts R-2b, stop key contacts SK, stacker contacts 203 (also see Fig. 2), stick contacts R-1a of previously energized relay coil R-1, the relay coil, and'to the right side.

Relay coil R-1 now remains energized until either the cards are exhausted from supply magazine |36, causing the card lever contacts |19 to open and eventually deenergize coil Rf-2 with consequent opening of contacts R-2b, or upon depression, at will, of the stop key to open con-'- tacts SK, or when the stacker magazine |82 is full, causing contacts 293 to open.

There is a gap between successive cards feeding from magazine |36, and the lagging edge ofthe leading card will leave card lever |18 and permit card lever contacts |19 to open at 78" 'of the card cycle, while the forward edge of the following card will not cause contacts I 19 to malke again till after 82" of the same card cycle. To maintain coils Rf-I and Rf-2 energized during this open interval of card lever contacts |19, commutator CF-I makes (see Fig. 20), shunting con-E tacts |19 through the following path (the top of Fig. 23)

Card lever shunt-From the left side, through commutator CF-I, stick contacts R-Ia, coils R-|, R-2, to the right side.

`If the stack of cards is exhausted, contacts |19 will not have been reclosed and when commutator CF-4 breaks at 84" of the card cycle, coils R-I and R-2 will be deenergized. Contacts R-2b will open and the Start key shunt circuit will break to deenergize coil Rf-1. As a result, contacts -1b will open to break the Main clutch magnet circuit. Main clutch magnet 53 remains energized, however, till the end of the card cycle vthrough a shunt circuit formed through commutator (IF-5 (see Fig. 20), which makes at 82 and opens at 8.9. The making of commutator CF-S shunts contacts 28, R-3b. R-1b, R-22b, R-'|4c, and Rf-Ilb of the Main clutch magnet circuit, permitting clutch magnet .53 to remain in eiect until the beginning of the 89th cycle point. The main clutch is uncouplcd as a result, at the 80th division (see Fig. 21) of the 89th cycle point.

The analyzing or card reading period of a card cycle is indicated by the top line of Fig. 20 and extends from 1. through, 80, during which period, the Card read commutator CF-l is made.

'I'he Card lever circuit has energized coillR-I to .close contacts R|b, forming the following Coil R-9 now closes the left side of .transfer` contacts R-Sb (near the top, right of Fig. 23) and opens the right side of these transfer contacts. 'I'his condition of the contacts R-9b endures through the card reading period under control of commutator CF-I and is repeated every Acard cycle as long as cards continue to feed and,

through the card lever circuit; maintain relay coil R-I energized to hold contacts R-Ib closed in the coil R-S circuit.

As -an example of an analyzing circuit, assume a 12" perforation is being analyzed, forming the following circuit:

12 analysis- From the left side, through commutator CF|, contacts R-Ib, zoning commutator HS-I (see Fig. 21) normally closed contacts R-IBb, clutch arm contacts 63 (see Fig. 19 for construction and Fig. 21 for timing), common brush SB-c, contact roll |31, brush SB-I2, the left and now-closed side of transfer contacts R-9b, through the 12" comb magnet 2|2, and through relay coils Rf-B and R-4, to the right side.

As indicated by above analyzing circuit and by reference to the card cycle chart, Fig. 20, commutator CF-l times the card reading period, so

that after the 80th or last card column has passed brushes SB, the engagement of the brushes with the bare contact roll |31 will be ineffective to form any analyzing circuits.

When the main clutch is at rest, clutch arm contacts 6 3 are open to prevent formationof any I (Fig. 8).

follows:

of the analyzing circuits.

Comb magnet 2|2-|2, upon energization, shifts its associated comb barJIU-IZ to the right When the analyzing means senses one of the perforations 9 to I, the analyzing circuit is as Digit or intraaone analysisLFrom the left side, through CF-I, R.-|b, HS-l, R|3b, 63, brush SB-c, common roller |31, the active one of the brushes SB-I to 3 sensing the interzone perforation 2 8, or 9, the comb magnet 2|2 in series with the active brush, and through common relay coils Rf-S and R|6 to the right side.

If a column contains a zone perforation plus one of the intrazone perforations to 9, designating an alphabetic character, a pair of comb magnets 2|2 is simultaneously energized, moving two combs 2||| to the right (Figs. 7 and 8), in readiness'to release the lever 2|8 corresponding to the alphabetic character denoted by the sensedV zone and intrazone holes in the card column. If only one perforation 0 to 9 occurs in a column,

indicating a digit, only one comb magnet 2|2 is energized and the associated comb 2|2 moved lto the right ready to release the lever 2| 8 corresponding to the analyzed digit perforation. The forward movement of the selected lever 2|8 does not occur-until cam 229 (Figs. 6, 10, and 13) permits the levers to drop olf the high point of the cam. This occurs shortly before f20 of the zoning cycle (Fig. 21). Before analysis of the column designation and resulting displacement of selected combs 2|0, the leverv 2|8 corresponding to this designation is in front only of lugs 2|Ua (Fig. 9) of these combs. 'I'he displacement of these combs removes their lugs from in front of the lever 2|8' corresponding to the analyzed designation, thus selecting this lever for operation. There is at least one lug 2 (la in front of every other lever 2|8. W'hen cam 22D're1eascs levers 2|8, they move forward to sense comb lugs 2||Ja (see Fig. 9). All the levers 2l8 will be stopped by the comb lugs with the exception of the selected lever which corresponds to the ana lyzed character. This selected lever moves forwardly between lugs 2|Daof the combs, thereby locating its shoulder 2|8a above lift bail 22| (Figs. 10 and 13). At about 24" of the zoning cycle, circuit breaker HS-|, which times the duration of the analysis of a column perforation, opens and breaks the analyzing circuits to deenergize the comb magnets 2|2. Springs 2|5 (Figs. 7 and 8) now tend to return the previously actuated combs ZID but this is prevented at this time by engagement of sides of lugs 2|0 thereof with the selected lever 2|8 which has moved forwardly between these lugs. v

At 50 of the zoning cycle, lift bai1 22| rises and by engagement withshoulder 2|8a of the forwardly positioned, selected lever 2|8, lifts the latter to operate the associated lever I0 for causing a type bar I8 (see Fig. 6) to strike platen 20 at about 81" of the zoning cycle to record the character corresponding to the analyzed designation. At 90 of the zoning cycle, cam 220 has withdrawn the selected lever 2 I8 from all the lugs 2|0a of combs 2|||, thus releasing the previously actuated combs for restoration by their springs 2|5. Shortly thereafter, at about 95 of the zoning cycle, cam 251| (Figs. 7 and 10) operates lever 25| to cause bail 252 to positively restore and aline combs 2|U in normal positions.

The above explanation indicates the operations and timing thereof occurring during a zoning cycle or cycle of the zoning or transcribing system and which corresponds, when the card is being fed at normal speed, to a card cycle point.

II'hese operations cause the transcribing means` under control of a designation in a card column to transcribe and record the corresponding character. v

As previously explained, the failure of any of lease by cam 220at about 20 of the column i cycle (Fig. 21), to move forwardly above lift bail 22|. As a result, during the zoning cycle, lever 2|8sp is effective to operate lever IU-SP (Figs. 1 and 13) for-effecting intra-line spacing.

Intra-line space lock.-As already explained, when none of the combs 2|!! is actuated, lever 2 |8sp (Fig. 13) is normally free to move forward and operate lever |Usp to cause intra-line spacing of the recording unit carriage 24 (Fig. 6).

A gap of ten cycle points occurs between successive cards, during which none of the combs 2||l is actuated, the analyzing circuit line being broken by commutator CF-I (see Fig. 20) During each of thezoning cycles or revolutions of shaft |23 occurring within said gap, when cam w 22|) releases lever 2|8sp, forward movement of the lever. while not blocked now by combs 2IIJ,

will be prevented by energization of magnet 230. It is also desired to lock the lever 2|8sp against operation if the main clutch is uncoupled during any zoning cycle, particularly during a zoning cycle corresponding to a cycle point occurring during the card reading period, 1" to 30 of a card cycle.

The manner in which the magnet 23D is cncrgized, under above conditions, to lock the space lever 2|8sp will now be explained. The circuit for magnet 23D is as follows (middle of Fig. 23)

Space lock magnet circuit-From the left side. through line 3| through either contacts R--Ba or the clutch arm contacts 62, through lift bail contacts 235 (also sec Fig. 13), and space lock magnet 23u, to the right side.

Contacts R-Ela are opened by coil R--S energized during the card reading period of a cycle by the previously traced Coil R-Q circuit. Between card reading periods, coil R-9 is deenergized, permitting contacts R-Sa to close. Thus, the Space lock magnet circuit will be automatically established during the ten cycle point gap between successive cards or while the brushes SB are wiping the bare contact roll |31. During this gap, shaft |23 makes ten revolutions and none of the combs 2 U is actuated. but lever ZIBsP remains locked by magnet 230 against operation by the lift bail 22|. In above manner, under control of contacts R-9a, intra-line spacing of the recording unit is prevented between card reading periods.

If the main clutch is stopped, clutch arm contacts 62 make (see Fig. 19) and remain closed while the main clutch is at rest and while shaft |23 continues to rotate and perform zoning cycles. As the main clutch is at rest, the card feed has been interrupted and during this period, the circuit for magnet 23D forms through closed contacts 62. As indicated in the zoning cycle chart (Fig. 21) the main clutch disengages at 80 oi' the zoning cycle or after the operations under control of the last-analyzed card column have been completed. Lift bail contacts 2'35 do not close till 90 of this zoning cycle. At this point. With contacts 62 closed, the Space lock magnet circuit forms, energizing magnet 230 to prevent forward movement of lever 2|8sp above lift bail 22|. This circuit remains in effect till '75 of the next zoning cycle, but by then the lift bail 22| has risen and, even if lever 2| 8sp were to move forward, it would be too late for the shoulder 2|8a thereof to coact with the lift bail. Thus, during the zoning cycle following disengagement of the main clutch, intra-line spacing is prevented. As long as the main clutch remains disengaged, contacts 62 stay closed and the above locking action is repeated each zoning cycle. In above manner, when the main clutch is at4 rest and card feed has been interrupted, intra-line spacing of the record sheet on platen 2D is prevented under control of clutch arm contacts i2.

Intermediate column carriage return code-- When an intermediate card column (between and 80 or 2 through 19) is punched with a carriage return code 12, the sensing of this code by the analyzing means forms the previously traced 12 analysis circuit, energizing comb magnet 2|2| 2, and relay coils R--4 and R-8.

AEnergization of comb magnet 2|2| 2 causes operation of lever 2|8CR (Figs. 7, 8, 10) in turn causing lever IU--CR (Fig. 1) to operate the carriage return and incidental line spacing mechanism.

Coil R--8 closes contacts R-Sb to form the following circuit:

Coil R-3 circuit-From the left side, through zoning cycle commutator HS-Z (see Fig. 2l),

line 3|6, normally closed relay contacts R-|6a and R-Za, contacts R-Bb, coil R-3, to right side.

Coil R3 closes contacts R-Ba to form a shunt circuit operative after contacts R-8b open 5 due to breaking of the analyzing circuit at about 24 of the zoning cycle. This shunt circuit is as'follows:

Coil R-3 shunt- From the right side, through coil R-B, contacts R-Sa, left hand margin con- -10` tacts 33 (also see Fig. 15) to the left side.

Coil R-3 opens contacts lit-3b in the Main clutch magnet circuit, deenergizing clutch magnet 53 to stop card feed at 80 of the same zoning cycle (see Fig. 2l) in which the carriage re- 15 turn code was sensed. As the carriage return operation is effected, contacts 28 (Figli) also open; causing an additional break in the Main clutch magnet circuit. The card feed will now stop until the carriage return mechanism returns to normal to cause contacts 28 to reclose and until the left margin is reached, at which point lthe left margin stop extension 34a (Fig. 15) opens contacts 33, and the next line of the bill form is in position to receive the transcription from the following card column. As contacts 33 open, the stick circuit of coil R-3 opens, and contacts R-Sb reclose. With termination of the carriage return operation, contacts 28 also reclose, and as contacts R-3b have now closed, the Main clutch 30 magnet circuit is reestablished, resuming card feed.

In above manner, spaced intermediate card columns may have carriage return codes to cause the date of a single card T to be transcribed on successive lines of a bill form. It is to be noted, however, that normally, in the absence of an intermediate card column carriage return code, all the data of a single record card will be transcribed on a single line of a bill form.

4Normal carriage return- Following the passage ofthe last card column of each card past the analyzing means, a cyclic carriage return normally occurs, as follows: After the last card column has been read, commutator CF--l (Fig. 20) breaks, opening the coil R-S circuit. As coil R-S is deenergized, it permits the right side of transfer contacts R-Sb to close,which occurs after the analyzing period of column 80. After the right side of contacts R9b close, commu- 50 tator CF-B (Fig. 20) makes. Commutator CF-l already has made, and when commutator CF-3 makes, the following circuit forms (top of Fig. 23):

Coil R-26 circuit-From the left side, through 55 commutator CFL-4, contacts R-|a, normally closed R-Ib contacts, commutator CF-S, coil R-26, to the right side.

Coil Rf-2B closes contacts R26a, and with the right side of transfer contacts R-Sb already closed, the following circuit is established (upper part of Fig. 23)

Normal C. R. circuit-From the right side, through coils R-I, R8, comb magnet 2|2|2, the right side of contacts R-Sb, contacts R-26a, 65 contacts R|a, commutator CF-4,and to the left side.

As a result of energization of magnet 2l2-|2,

a carriage return operation occurs. This normal, cyclic carriage .return is eifected at the end ofthe card reading period, normally causing the data of each card to be recorded on a separate line. As an incident to the normal or cyclic carriage return, card feed is interrupted under control of the coil R3 circuits, formed 75 0 anali/zing circuit-'From the left side` through commutator CF-l, contacts Rf-lb, commutator HS-I, relay contacts R-I3b, contacts 63, common brush SB-c, contact roll |31, brush SB-O, normally closed zero elimination contacts R-25b, comb magnet 2|2-O, coil R--24, and to the right side.

When a 0 code occurs alone in a card column outside the selected numerical card eld or within the numerical field but after the first significant digit representation, the above 0 analyzing circuit is established, causing the printing of the digit 0. It is desired, however, to prevent the formation of the above circuit when the 0 code occurs within the selected numerical card field but before the rst significant iigure designation of this eld. By preventing formation of the 0 analyzing circuit, the printing of the 0 by the transcribing and recording means is prevented. Further, since the 0 analyzing circuit is suppressed, all the combs 2|0 remain in initial position, and as a result, the lever 2I8sp is permitted to move forward, causing an intra-line spacing operation to occur. Thus, foreach column of a numerical card field bearing a 0 code preceding the column bearing the designation of the i'lrst or highest order significant digit, the recording of a 0 will be prevented and instead an intra-line spacing operation will occur. Thenumbers in the selected, corresponding numericaliields of successive cards arelisted by the recording apparatus one above another, due to the carriage return operation which occurs at the end of each card cycle,

' as explained above. The numbers are thus recorded in lists, within a predetermined, vertical, numerical eld of the receiving sheet P, and this field maybe considered as including denomina.-

- tional order columns, each corresponding to a denominational order column of the numerical card eld. As explained above, when the 0 analyzing circuit is suppressed, the 0 digit is not printed in the corresponding order column of the sheet P, but instead the sheet is spaced to bring the next order column thereof to printing position. In this manner, the numbers of the successive cards which are printed in list form on the sheet P have their digits located in the proper denominational order columns along the list.

The zero elimination means is to prevent0 codes of selected numerical card fields from being transcribed when such codes occur above the highest order significant gure of the numerical field. The 0 codes, however, are to be transcribed when they are in columns of the numerical card field following the column bearing the first significant figure. Further, since successive cards have correspondingly located numerical card fields, the zero elimination means may come into play at the same time during each of successive cycles, and this is effected under control of the cyclically operating program drum |44. As previously explained, clips |41 may be set on drum |44 (Figs. 16 and 17) to ride past pinion |68 and turn the latter to cause contacts |12 to close for effecting elimination of zero printing before the rst signiiicant digit of a numerical