US2076743A - Accumulating and printing device - Google Patents

Description

April 13, 1937. E. J. RABENDA ACCUMULATING AND PRINTING DEVICE Filed May 16, 1934 6 Sheets-Sheet 1 FIG./

NZENTOR.

N m T T A April 1937- E. J. RABENDA 2,076,743

ACCUMULATING AND PRINTING DEVICE Filed May 16, 1934 6 Sheets-Sheet 2 MISUAdT/ON VENTOR. W

April 13, 1937. E. J. RABENDA 2,076,743

AGGUMULATING AND PRINTING DEVICE Filed May 16, 1934 6 Sheets-Sheet 3' INVENTOR.

ATTORNE u xx mm mm mm m u April 1937- E. J. RABENDA 2,076,743

ACCUMULATING AND PRINTING DEVICE Filed May 16, 1934 6 Sheets-Sheet 4 FIG. 8 FIG. 9

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ACCUMULATING AND PRINTING DEVICE Filed May 16 1934 e Sheets-Sheet 5 FIG. IZA

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April 13, 1937. E. J. RABENDA 2,075,743

' ACCUMULATING AND PRINTING DEVICE Filed May 16, 1954 e Sheets-Sheet s J MP 7 CB/E 4 cF/a INVENTOR.

Patented Apr. 13, 1937 PATENT OFFICE accomom'rmc AND PRINTING DEVICE Edward J. Rabenda, Binghamton, N. Y., as'signor to International Business Machines Corporation, New York, N. Y., a corporation of New York Application May 16, 1934, Serial No. 725,837

9 Claims.

The present invention relates to improvements in fraction accumulating, subtracting and total printing devices and more particularly is concerned with perforated record card controlled apparatus which is adapted to receive entries of debit and credit amounts in English currency and furnish a true net balance as a result.

An object of the invention is to provide an improved means for accumulating and total printing debit and credit amounts in the duo-decimal system, such as pence, twelfths, inches, dozens, etc. The apparatus also contains means for handling fractions such as halves used in the English currency system in changing from shillings to pounds. 1

Another object of the invention is to provide an improved and simplified subtracting device for handling English currency.

A feature of the invention is the improved means for using a standard Hollerith card for controlling the accumulation of positive or negative fractions and English currencyamounts.

Another object of the invention is to provide means for controlling the accumulation of a multi-denominational ordered number by means of a special perforation on a record card.

Another object of the invention is to provide means for sensing the value of a number during one cycle of operation and only entering the ,num-

her into an accumulator on the following cycle of operation of the machine.

An object of the invention is to provide means for sensing a special perforation representing a mum-denominational ordered number on one of such a number on the following cycle of the machine.

Another object of the invention is to provide devices for controlling a plurality of type bars by a single accumulator order. The machine disclosed contains devices for reading a value such as ten or eleven registered on a single accumulator wheel and thereby controlling two separate type bars for the printing of 10 or 11. An object of the invention is the provision of devices for entering and printing complements of a multi-denominational number represented by a single perforation on a record.

Another object'of the invention is the provision of printing control devices adapted for universal use in the decimal system, for fractional representation and English currency tabulation.

' A feature of the invention is'the selective control of two typebars by a single column of perforation positions on a card or a single position on cycle of the machine and then causing printing an accumulator wheel. The printing of a single decimal digit by one bar or the printing of duodecimal figures by two bars represents either an entered item or a total.

The accumulating and total taking devices disclosed herein are an improvement on the devices set forth in the application of Albert W. Mills, Serial No. 634,454, filed September 23, 1932.

Further objects, uses, and advantages of the present invention are pointed out hereinafter in the specification and claims and shown in the drawings which illustrate what is considered to be the preferred embodiment of the invention.

In the drawings:

Fig. 1 is a side elevation view of the machine showing the driving and operating connections.

Fig. 2 is a vertical section taken through the center of the machine. The printer, accumulator, control cams, and other devices in the machine are illustrated in this view.

Fig. 3 is a detail view of a portion of a perforated record card used to control the machine.

. Fig. 4 is a portion of a record strip showing the recordingof a few amounts and a total.

Fig. '5 is a detail view of an ordinary transfer cam associated with the usual decimal wheel which is active when passing from 9 to 0.

Fig. 6 shows .a detail view of a transfer cam associated with a halves wheel. In an English currency accumulator this wheel is in the third order representing tens of shillings or half pounds.

Fig. 7 is a side elevation of an accumulator assembly showing two accumulating orders. The upper order shown is a units order adapted to accumulate pence. Some of the parts in the lower order are sectioned and other parts are removed to reveal the totalizing mechanism.

Fig. 8 is a composite front and sectional elevation view of the accumulators taken along the line 8--8 of Fig. '7.

Fig. 9 is a sectional elevation view of the accumulators taken along the line 9-9 in Fig. 7.

Fig. 10 is a detail view of the transfer control contacts as positioned when a related pence accumulator wheel is located in the zero position after having passed from the 11 to zero.

Fig. 11 is a detailview of the transfer control contacts as positioned when the associated ac-' cumulator wheel is located in the 11 position.

Figs. 12A and 123, when taken together, form a wiring diagram of the machine.

Referring to the portion of the card I disclosed in Fig. 3, a plurality of columns of index point positions ranging from R to 9 are shown. An amount which is to be added or subtracted in a machine is entered by perforations in the successive columns. The card shown is perforated to represent two amounts in English money. The one amount is 6 pounds and 10 pence; the other amount is 13 shillings and 11 pence. The index points designated X are used to signify ten pence in a units order and the index points marked R are used to position a perforation for the representation of 11.. The X index point positions in certain orders have another controlling value when perforated. Thus, on the card shown the perforation 2 shows that the amounts on the record are credit items. The amounts are punched in the same manner to indicate either a credit item or a debit item. If the card contains a credit item, the control perforation 2 is punched in the upper portion of the card and used to control the machine to efiect reverse operation of adding and subtracting in the accumulators of the machine. In the absence of such a perforation, the machine will effect addition of a true number in a debit accumulator and add the complement of the true number in the credit accumulaton.

In Fig. 3, the perforation 2" is shown in the twelfth column of index points on the card. The perforation may be placed in any of the columns and the machine may be plugged accordingly.

The cards are fed through the machine by feed rollers and analyzed successively by upper sensing brushes UB and lower sensing brushes LB in the usual way. The card is fed past the brushes with the 9 index point position passing under the brushes first, followed by the 8 position. and then the 7, and so on in a manner which is well known in the art.

The upper brushes are used for control sensing while the lower brushes eflfect the adding and subtracting of the amounts represented on the card. When an item on the card is to be added in one of the accumulators and a perforation appears in the first column in the 6 index position (as in Fig. 3) then when the perforation passes under the lower brush the related accumulator wheel is clutched to the driving means to commence adding one unit as each of the succeeding points on the card passes under the brush. At the time the zero position passes under the brush, the machine automatically declutches the accu mulator wheel so that it stops turning. It will thus have turned six steps to accumulate the value 6. In the fourth column on the card, the related upper brush will contact with the perforation in the X position to clutch the related accumulator wheel to commence adding one step before the nine position on the following cycle of the reading in the card. Then, when the zero position is reached and the wheel is declutched, the value ID will have been added.

During the entry of a credit item, the described adding operation takes place in the credit accumulator. The machine may be arranged so that as this is occurring, a debit accumulator may be controlled so as to enter the complement of the number added in the credit accumulator. In order that an accumulator may receive the complemental amount, its accumulator wheels are clutched early in the cycle so as to commence adding in all orders except the units order when the 9 index point position on the card passes under the lower brushes. The units order or pence wheel is clutched three steps before the other wheels. When a perforation is sensed by the lower brush in any particular column. the

accumulator wheel in the credit accumulator is declutched. Another form of mechanism isprovided to take care of the entry of complements in the pence orders. This mechanism is operated to enter the value 1 or 2 according to whether 11 to 10 pence perforations are presented in the pence order columns of index points.

In the order representing tens of shillings or half pounds the clutching of the accumulator wheel takes place in the index point I and is adapted to cause the entry of either one or zero according to whether the index points zero or one are punched in the card. In this way the complement of any possible number of shillings ranging up to 19 may be entered in the tens and hundreds wheel representing units and tens of shillings.

When a perforation is sensed by the lower brushes in any of the columns other than the pence or shillings columns, the related accumulator wheel in the debit accumulator is declutched. Thus, with the card of Fig. 3, the debit accumulator wheel associated with the first column will commence adding as the nine position passes the related lower brush and then as the 6 position passes the brush the perforation in this position will be sensed and the energization of an electromagnet will cause the accumulator wheel to be disengaged after entering the amount "3 which is the complement of the figure 6 represented on the card. Since no perforations appear in the next two columns on the card, the complement 19 will be entered into these two accumulator wheels. The fourth column is perforated to represent the value 10 and therefore the amount 2 is entered into this order since the values 2 and 10 are complementary in the duodecimal system.

Accumulator driving mechanism In Figs. 2 and 7 is shown the manner of mounting two accumulator orders on a plate 7. This plate may be held in the machine by sliding it between supporting frame members 8 and 9 (Fig. 2). A number of these units may be mounted in the machine side by side. Other of such units may be mounted in the space provided below the frame member 9.

As shown in Fig. 7, each accumulator has a gear l0 rotatably mounted on a stud H fixed in the plate 1. This gear is in constant mesh with a gear 12 mounted on a shaft l3 upon which there is also mounted a bevel gear M (Fig. 1) meshing with a bevel gear I5 on a vertical shaft IS. The shaft is provided with four bevel gears, one for each drive shaft l3. On the lower end of the shaft is mounted a bevel pinion ll meshing with a bevel pinion IS on a shaft I!) which has a gear 20 meshing with an idler gear 2! which in turn meshes with a gear 22 on shaft 23 (Fig. 2) in axial alignment with a shaft 23' (Fig. 1). The shaft 23 is provided with a worm wheel 24 (Fig. 2) meshing with a worm 25 on a shaft 25 which is driven by a belt 21 on grooved pulley 2B fixed to the shaft 26. The belt 21 is driven by an electric motor or some other source of power. The motor is constantly running while the machine is in operation, so that shaft i6 is turning constantly. Through the described driving connections, the gear i0 in each accumulator order is adapted to rotate constantly.

At the extremities of the shaft 23 (Fig. 2) are magnetically controlled clutch devices adapted upon actuation to form a driving connection at ao'ra'ns one end to a card feeding device and at the other end to a shaft 23' for driving a printing mechanism. r

The shaft 23 carries, adjacent to gear 22 (Fig. 1) a notched disk adapted-to be engaged by a dog I41 pivotally mounted upon an arm integral with a gear 4. An armature latch I48 normally holds dog I41 out of engagement with the driving disk. When the printing clutch magnet PCM is energized, it draws latch I48 to the left. releasing dog I41 so that the printing mechanism drive gear H4 is clutched to the driving shaft.

Upon deenergization of magnet PCM, armature I48 is movedby a spring into the path of a projecting toe on dog I41 to throw the dog out of engagement with the clutch disk. The arm on gear II 4 is also engaged by armature I48 to prevent further movement of the gear.

Shaft 23 carries at its other end another clutch disk with which cooperates a dog operated under control of a card feed clutch magnet. The engagement of these clutch elements is controlled in a manner similar to that described above with reference to magnet PCM. However, the card feed clutch is engaged before the print clutch to allow more time early in a subtraction operation. The card feed driving connections are shown in Fig. 1 and include a gear meshing with a train of gears I49, I50, I5I driving the card feed gears 3a. Other idler gears drive through gear I52 to gear I53 mounted on the shaft I54. This shaft is thereby adapted to be rotated in a counterclockwise direction for each operation of the card feeding mechanism thereby operating all the CF cam contacts mentioned hereinafter.

The credit and debit accumulators The gear II] in each accumulator order is mounted on a bushing 29 (Fig. 8) and keyed to another gear 30 by means of a dowel pin 3I fastened to the bushing. The unit comprising the gears and the bushing is free to rotate constantly on the stud II. The stud is extended by attaching a shouldered sleeve 32 thereon by a screw 33.

- Between the head of the screw and the shoulder on the sleeve is located a hub 34 carrying an accumulator gear wheel 35p and a transfer cam disk 35p. Thus, the two separate gear units may rotate independently on the stud II. The unit containing driving gear 30 is rotated one-half revolution for each cycle of operation of the machine. The units order or pence accumulator gear 35p shown in Fig. 7. is provided with thirtysix teeth, therefore one third of a revolution of this gear represents a complete adding operation of twelve steps.

Thev two gears 38 and 35p are adapted to be clutched together so that the accumulator gear 35p may be driven a differential distance by the drive gear 30. The clutching device includes two pinions 31 and 38 (Figs. '7 and 9) which are held together by a bushing 39 on a stud 40 mounted' on a clutching lever 4| pivoted at 42 (Fig. '7). The pinion 31 is adapted to engage with the gear 30 but the teeth thereon are normally out of engagement with the gear teeth. The other pinion 38 maintains engagement with the teeth on accumulator gear 351). A spring 43 attached to lever 4I urges the lever counterclockwise to clutch pinion 31 with gear 30 for driving, but the lever is prevented from moving by the contact of the end of a horizontal arm thereon with the end of an armature 44 pivoted at 46 and associated with the accumulator magnet AP or A, the armature being held in such a position against a stop stud 41 by a spring 45. when the magnet is energized, attracting the armature, the lever 4I isreleased and then the spring 43 rocks the pinion 31 into mesh with the gear 30.

In Fig. 5 there is shown the ordinary form of gear 35 and cam disk 35 associated with all of the regular decimal orders; i. e., all the orders except the units or pence order and the third or half pounds order. The gear 35 is provided with forty teeth, so that one-quarter revolution of this gear represents a complete adding cycle of ten steps. The disk 36 is provided with four projections (one for each ten-steps) as distinguished from the three projections (one for each twelve steps) on the disk 35:).

Fig. 6 shows the gear 35 and cam. disk 35h. associated with the half pounds or tens of shillings order of the accumulator. One-twentieth of a revolution or two steps of movement of gear 35 represents a complete adding cycle in this order. The disk 36h is formed with twenty projections, one for each pair of teeth on gear 35.

Aside from the differences shown in Figs. 5 and 6, the accumulating mechanism in all orders is the same as that in the pence order shown in Figs. 7-11, and the mode of operation in accumulating and transferring is the same. The energization of an accumulator magnet A or AP during adding or debit item entering operation is effected at a differential instant under control of an amount perforation in one of the data columns of the record card I (Fig. 3). The pinion 31 is then thrown into mesh with the gear 30 while the latter is rotating. Through the connections between pinions 31 and 38 and gear 35, the accumulator gear is caused to rotate until the zero position on the card reaches the reading brushes at which time the pinion 31 is thrown out of mesh by a cam 50 (Figs. '7 and 8)- which cooperates with the clutching lever M. This cam is fixed with respect to gears I0 and 30 and thus is constantly rotating with them. As shownin Fig. 7, two cam projections 5I and two projections 52 are provided on the cam 50 because the cam is timed to turn a half revolution for each accumulating cycle. 31 is thrown into mesh with gear 30 and commences to rotate gear 35, as soon as the cam projection 5I reaches an arm 53 extending from lever M, the cam rocks the lever clockwise about the pivot 42 to move the pinion 31 out of mesh with gear 30 so that the accumulating gear 35 is declutched from the driving means and ceases to rotate. The lever H is latched in the declutched position by the armature 44.

When the clutching lever H is moved counterclockwise to clutching position, an extension on the top of the lever engages a shoulder on a plate 54 which is properly located to stop the lever. An impositive latch or pawl 55 is pivoted at 42 and connected to lever H by a pin and slot connection 55. When the lever holds the clutching pinions out of engagement, pawl 55 engages the teeth on gear 35. The pawl also prevents overthrow of the gear as it is declutched. The pinion 38 is provided with an impositive latch 51 pivoted on plate 1.

The foregoing description deals mainly with the addition of an amount in an accumulator. If it is desired to subtract an amount from an accumulator, the complement of the amount is added to the accumulator. This may be done at the same time that the true amount is being added in another accumulator.

In adding the complemeniathe ordinary accumulator magnets A are energized automatically at the nine index position to mesh pinions 31 with gears 30 and start the wheels rotating. Each wheel continues to rotate until a perfora- 5 tion is sensed or the zero position is reached, then the gears in the accumulator receiving the complement are declutched. The hundreds order differs by automatically energizing the related accumulator magnet AH at the one index position so that the complement representing 10 shillings or a half pound may be added. The pence order magnet AP may be energized in one of three ways to enter a complement of pence. Ordinarily it is energized at the twelve index position to start adding the complement of 0-9 pence. However should the position X or R, Fig. 3, be perforated representing 10 or eleven pence, then the magnet AP is automatically energized at the two or one index point, respectively, to add the complements 2 or 1 in a manner more fully explained hereinafter.

A subtraction and cancellation control magnet SC (Fig. 7) is energized at the time when the wheel adding the complement is to be declutched. The time of energization is controlled by the differential position of the perforation in a related column of index points on the record card A magnet SC is provided for each accumulator order and is associated with devices for operating clutching lever 4| to declutch gear 352?. A long lever 58 is pivoted at 59 on plate 1 and has one end cooperating with the bottom of an armature 60 associated with magnet SC. The armature is pivoted at 6| and held normally against a stop stud 62 by a spring 63.

When the magnet is energized, releasing the end of the lever 58, a spring 64 urges the lever in a counterclockwise direction against stop 65, and a pin 66 on the lever is pushed against a latch 61 pivoted at 68. The latch 61 normally engages a shoulder 69 on an arm 70 pivoted at I Another shoulder 12 on the arm 10 is held near the horizontal arm on lever 4| by means of the spring 43 attached to a stud on the arm. The

sudden release of the arm 10 after the pin 66 pushes the latch 61 away from shoulder 69, causes the two parts 10 and 4| to rock clockwise under the urging of the spring 43 connecting the two, thereby swinging the lever 4| in a clockwise direction to declutch the gears. The lever 4| is latched in normal position by the armature 44.

At the end of each machine cycle the lever 58 is restored by one of a pair of rollers 13 mounted on a flange of the bushing 29 (Fig. 8). The

roller strikes the lower side of the left end of the lever (Fig. 7) rocking it clockwise and latching the right end under armature 60. While restoring, a pin 14 on lever 58 strikes the lower edge of arm and restores the arm, placing so shoulder 69 above the latching face on latch 6'! and tensioning spring 43 to urge lever 4| in the proper direction for clutching the gears. The parts 6'! and 10 provide means for controlling the declutching time so that a uniform disengagement of the gears is secured during the operation of the machine at listing or tabulating speed.

From the foregoing section of the description it is clear that for subtraction the accumulator :0 wheels are clutched to the driving gears by the accumulator magnets A, AP and AH and they are declutched by the magnets SC at difierential times during a cycle or by cam 5| at the end of a cycle. During ordinary adding operations, the

7 magnets SC are not used, the accumulator wheels being clutched at the differential times by the magnets A, AP and AH and declutched at the zero position by cams 5|.

Accumulator transferring devices For effecting carrying or transferring from one order to the next order in an accumulator, a frame 11 pivoted at 18 is adapted to cooperate with the cam faces on the transfer cam disk 36;) which is attached to the accumulator gear wheel 35p as described hereinbefore. An insulation block 19 secured to frame 11 cooperates with the center blade of a set of contact blades 80, 8| and 82. A finger 83 extending from the frame 11 cooperates with the periphery of the transfer disk 36.

When the accumulator wheel is located in the eleven position (Fig. 11) a notch 84 in the disk is in line with finger 83 and allows frame 17 to rock in a counterclockwise direction, permitting the center spring contact blade 80 to rise, closing the contacts 85 between the two upper blades.

If the accumulator wheel passes from the eleven to the zero position during an adding operation (Fig. 10) a projection 86 on disk 36 strikes the finger 83 and rocks the frame 11 in a clockwise direction. The block 19 then depresses the center blade 88 below the normal position and closes contacts 87 between the two lower blades. A latch 88 pivoted at 89 cooperates with a shoulder 98 to hold the frame in shifted position after the wheel passes the camming position. A spring 9| holds the latch in position until the end of the adding cycle when one of the rollers 13 strikes the latch and releases frame 11 for movement counterclockwise into normal position as urged by blade 80.

The transferring devices for the ordinary decimal orders using cam disks 36 (Fig. 5) are constructed and operated in a similar way, the only differences being that the finger 83 drops into notch 84 when a disk 36 is in the nine position, and the frame 11 is rocked in a clockwise direction by projection 86 when a decimal wheel goes from nine to zero.

In the half pounds or tens of shillings order the transfer cam disk- 36h cooperates with a similar form of electric transfer mechanism. However, here the finger 83 drops into notch 84 when the accumulator wheel is in any one registering position. And when the tens of shillings accumulator wheel goes from one to zero the frame 11 is rocked in a clockwise direction by projection 86. In this way a unit is transferred to the pounds order every time the shillings orders accumulate more than nineteen shillings.

After accumulating, the wheels are restored to the normal zero position, finger 83 rests on the concentric edge of the disk, and frame 1'! holds the center blade 80 with both contacts 85 and 81 opened.

Each lower contact 81 is wired in series with the next higher order accumulator magnet A or AH in a manner to be explained more fully hereinafter with reference to the wiring diagram.

The upper contacts 85 are also wired to connect to higher order magnets so that if a transfer impulse is directed to the magnet associated with closed contacts 85,-the impulse is carried through them to the next higher magnet. The transfer impulses through the contacts 85 and 81 are timed to occur after the cam projection 5| (Fig. '7), passes the extension 53, so that if a transfer is desired the magnet A or AH is energized, releasing lever 4| and clutching the accumulator gear for one step of movement after which the clutch lever is again thrown out by the engagement of cam projection 52 with extension 53.

The highest order upper contacts 85 are used in minus balance testing, and the contacts 81 are used to declutch the accumulator wheels at zero in total taking and for printing the total in a manner more fully explained hereinafter.

The energization of the units order magnet at the twelve rather than the eleven position during complement addition is mentioned before in this specification. The extra unit thus gained fills out the complement to the true full complementof the number being subtracted. If the number represented on a record card contains a zero in the units column, the rotation of the units order wheel through twelve steps of movement will actuate the transferring mechanism to induce a carry into the next higher order wheel, thus automatically carrying the extra unit to the higher orders to fill out the complement.

Printing mechanism The printing mechanism includes a platen 92 (Fig. 2) and a series of type carriers 93 each having a plurality of type elements 94 adapted to be struck by a hammer 95 loosely pivoted on a shaft 96. The type carrier is connected at its lower end to an arm 91 fulcrumed at 98. Springs 99 connected to the arms 91 and to a. cross beam I connected between arms I 0| pivoted at I02, tend to raise the arms 91 to raise the type carriers. A restoring bail I03 connected by links I04 to arms MI is adapted to restore the arms 91 to their lowest or normal position.

An arm I05 (Fig. 1) fixed to the shaft I02 on which the arms IOI are also fixed, is connected by a link I06 to a complementary cam follower arm I01 pivoted at I08 and cooperating with cams I09 and H0 on cam shaft I I l.

* Shaft III is driven through a chain of gears H2, H3, and H4 the latter of which is mounted on shaft 23'. The shaft 23' turns in synchronism with the feeding of the cards through the machine, and thus the bail I03 (Fig. 2) is raised so as to permit the type carriers to rise in synchronism with the feeding of the card.

Thus when the type element 94 carrying the numeral nine is approaching the printing line with respect to platen 92 and the actuating hammer 95, the nine position on the card will be passing the card reading brushes LB. If there is a perforation in the card at the nine position, a circuit will beclosed through the brush LB to a printing magnet PM (Fig. 2) of that particular column. This will attract the associated armature II5 which is connected to one of the rods II6 which at the other end is connected to a latching member II1 of that particular column.

This will release a latching pawl IIB permitting it to cooperate with the top one of the ratchet teeth II9 carried by the type carrier to stop the type carrier with the nine type 94 in line for printing.

When the arms IOI raise the bail I03 to permit the type carriers to rise, the springs 99 will be stretched when the type carriers are latched and the arms 91 are stopped in differential positions. After printing has been effected, the arms IOI are then lowered with the bail I03 to restore the type carriers to normal position.

- The latching pawls II8 must then be restored before the type bars can begin the next upward movement. For this purpose a bail I20 is adapted, when rocked clockwise, to rock the latching pawls H8 counterclockwise against the action of their spring and permit them to be latched by the latches H1. The ball I20 is connected by link I2I to arm I22 fixed on shaft I23 on which is also fixed an arm I24 (Fig." 1) connected by link I25 to an arm I26 pivoted at I21 and connected to a cam follower arm I26 (Fig. 2) adapted to be actuated by a cam I 29 on shaft I I I.

The several type actuating hammers 95 are actuated by individual springs I30 tending to rock them against the type 94 to effect printing. The hammers are normally locked in their retracted position by individual latches I3I. These latches are connected to levers I32 adapted to be moved to the left by a bar I33.

The bar or ball I33 is pivoted at I34 andis connected to an arm I35 (Fig. 1) connected by a link I36 to a bell crank I31 in turn connected by a link I38 to an arm I 39 fastened to a shaft I40 which carries (see Fig. 2) a cam follower arm I having rollers I 42 cooperating with complementary cams I43 mounted on shaft III.

A bail I44 which restores the hammers to normal position is supported on a pair of arms fixed on the shaft 96 to the end of which is fixed the crank I31 (Fig. 1). 'ine pin and slot connection I45 between link I36 and arm I35 permits the shaft 96 to turn clockwise a slight amount without link I36 moving arm I35. This is arranged in order that bail I44 .(Fig. 2) may be moved out of the path of the hammers 95 before the arm I36 and ball I33 are actuated by link I36 to release the hammers.

Where listing is to be effected on a record sheet I46 (Fig. 4), while an item is also being accumulated, the printing magnet PM will be connected to receive an impulse through the perforation in the card simultaneously with the transmission of such impulse to the related accumulator magnet AP, A or AH. The amount may be listed whether the item is a debit or a credit.

The total. taking control When a total is to be taken of a group of items which have been accumulated, and the total or balance is to be printed, it is necessary to open the listing circuits to the. sensing brushes and close the total printing circuits to contacts in the accumulator. The mechanism for effecting these circuit changes is controlled by a total control magnet TM, the operation of which is explained with reference to the wiring diagram. This magnet is adapted to be energized-either by depression of the total key or automatic operation of group control devices whenever a total is to be taken.

The plugboard circuit breaker switch During accumulating, total taking and transferring operations it is necessary to break connections between the sensing brushes, the accumulator magnets and the total printing contacts in order to prevent back circuits.

The devices for opening and closing the contacts PBCA and PBCB (Fig. 123) are shown in Fig. 2. A plate I95 is fastened to the machine frame near the card feed control shaft I54. -The plate carries a series of contacts arranged in groups of three, an upperblade I86, a center blade I81, and a lower blade I88. Each center blade I81 projects into a slot I89 cut in the side of a vertical insulation bar I90 riveted on a link' with a cam I99 on shaft I54. Another horizontal arm (not shown) guides the lower end of link I 9| The cam I96 has three different concentric levels I91, I98 and I99 for adjusting crank I92 and controlling the contacts.

Early in the counterclockwise movement of cam I96, the roller is raised to level I91 and the crank is rocked counterclockwise to close the upper contacts PBCA and condition the machine for 0 adding so that the impulses from the lower brushes are directed to the accumulator magnets. At transferring time, the crank roller I95 falls to level I98 and closes the lower contacts PBCB enabling the transmission of transferring im Pulses through the transfer contacts to the accumulator magnets. Then finally the crank is brought to rest on level I99 whereupon both contacts PBCA and PBCB are opened and the machine is adapted to take a total.

The machine operating connections" The wiring diagram in Figs. 12A and 12B shows the control connections in the machine for effecting adding, subtracting, transferring, printing and total taking.

The source of energy is at PS (Fig. 12A) and includes the lines 200 and 2M. When the switch is closed at PS, the operating motor M is energized and turns the shafting to which may be clutched the various mechanisms in the machine. Another main line 202 is connected to line 20I through contacts CR4, CR5, CR6, and CR1 which are closed instantaneously as the index point positions on the card appear under the upper and 5 lower brushes U3 and LB.

When the start key is depressed, contacts 203 are closed and a circuit is established from line 200, through the stop key contacts 2I6, contacts MII, card feed clutch magnet CFCM, magnet R6 in parallel therewith, contacts 203 and wire 204 to line 2!".

The energization of magnet CFCM will cause operation of the card feeding mechanism to feed cards through the machine. This magnet also controls contacts CFCI and CF02, closing them when the magnet is energized. As the cards feed through the machine they depress the lower card lever and operate the lower card lever contacts LCL. The magnet R6 closes contacts RBB as long as.cards are feeding, but opens these contacts to prevent the passage of pence accumulating and printing impulses during the taking of a total.

When contacts LCL are closed a circuit is established through magnets CLR and CLRH, from line 200, through contacts LCL, magnets CLR, CLRH, in parailel, and wire 205 to line 2Ill. The magnet CLRH when energized forms a holding circuit by closing contacts CLI which are in series with contacts CR2 which close when contacts LCL open. The other magnet CLR closes contacts GL4 in parallel with start key contacts 203, so that by means of contacts CFCI and GL4 the energization of magnet CFCM is maintained after the start key is released. -If the auto start switch AS is closed as shown, the closing of the contacts PI at the end of a total cycle serves to energize the magnet CFCM and resume cardfeeding. If cards fail to feed because of an empty magazine or jammed cards, the contacts LCL remain open and the circuit is opened at GL4, deenergizing the card feed clutch magnet and stopping the card feeding mechanism.

If printing is to be effected under the control of the cards being fed through the machine, the list switch is closed as shown so that when contacts CF02 are closed by magnet CFCM and contacts GL3 are closed by magnet CLR, the printing clutch magnet PCM is energized. The circuit is as follows: line 20!], wire 206, magnet PCM, wire 201, contacts PCI, contacts CF02, contacts M15, the switch arm, contacts CL3, and Wire 208 to line 20L The energization of magnet PCM causes the printing operation devices to be clutched to the main operating mechanism so that the type bars and associated mechanism are operated. If tabulating control of printing is desired, the switch may be shifted to TAB, then during the printing of the first card after a total, contacts P2 open to deenergize magnet PCM. The magnet remains deenergized during the accumulation of a group of cards because contacts PCI are opened by the unlatching oi. armature 209 by energization of magnet PCRM. The circuit includes line 200, contacts P3 closed during the printing of the first card after the total, magnet PCRM, the switch arm at TAB, contacts CL3 and wire 208 to line 20 I.

The magnet PCM may be energized for the printing of a total by the automatic closing of contacts M12, or the closing of contacts 2 by the hand total key. The circuit is from line 200, wire 206, magnet PCM, wire 2I2, contacts M12, wire 2I3, the switch HTS in the position shown for automatic totals or moved to the left for hand totals, thence through wire 2I5 or contacts 2| I, contacts CR3 normally closed, and wire 320 to line 2!.

While the machine is in operation and cards are being fed the machine may be stopped at any time by depression of the stop key to open the contacts 2 I6. This will break the circuit through the card feed clutch magnet CFCM which then allows contacts CFC2 to open to deenergize the printing clutch magnet PCM. The operating motor will continue to operate until the switch at PS is opened.

A platen feed mechanism is provided to feed the record paper before printing in both listing and total taking operations. A platen feed magnet PF'M, when energized acts to clutch the platen spacer to the driving mechanism. The circuit through the platen feed magnet is as follows: line 200, wire 2"], switch SF, contacts CFII, contacts Pl closed during printing, paper feed magnet PFM, and wire 2 to the other line 2M. The magnet may be energizeddarautomatic total taking by the closing of contacts M13 and contacts P5.

The passage of cards under the upper brushes UB serves to deenergize magnets RI and R2 which in turn control the operation of many contacts throughout the machine. These contacts are associated with magnet R2 and are operated thereby to indicate the presence of cards under brushes UB. When cards fail to appear under the brushes UB a circuit is closed through line 202, wire 2I8, common brush 230, contact roller 23I, brush 279, contacts CF9, magnets RI and R2 in parallel and wire 280 to line20II. Magnet RI closes associated contacts RIA and a holding circuit is established through contacts CF8 and RIA.

In an ordinary adding operation, as the card passes the lower brushes LB the amount perforated therein is added and printed. The circuit is from line 200 (Fig. 12A), contacts GL2, and CF2, common brush 2I9, contact roller 220, brush LB touching roller 220 at a differential time controlled by the location of the perforation, Jack 22I, plug wires to jacks 224 and 26I if both adding and listing control is desired; then the circuit branches out in two parallel circuits, the printing or listing branch includes contact 114, printing magnet PM and line 202; the adding branch continues through jack 228, cable 225, (Fig. 123), contacts R4113 closed for adding, wire 350, contacts PBCA closed during accumulating, wires 351 and 352, contacts 114 closed for item entry, accumulator magnet A and line 202.

The energization of the accumulator magnet acts to clutch the accumulator wheel to the driving gear and rotation continues until cam 51 (Fig. '1) declutches the gears. I

The addition of the amounts 1 to 9 are carried out in a similar way in the pence'order. The circuit for the addition of such numbers in this lower order bank may be traced at the top of Fig. 123. The impulses from the lower brushes travel along the cable 225, through wire 353, contacts PBCA, wire 354, contacts 355, wire 356, contacts 351, wire 358, contacts 359 closed during adding, wire 360, wire 352, contacts 114, magnet AP and line 202.

The listing of the ordinary. decimal figures in the pence order. follow a path somewhat different from the printing circuit in the higher orders. The circuit may be followed in Fig. 12A from line 200, contacts CL2 and CF2, common brush 219,, contact roller 220, brush LB in the lower order, jack 221, a plug wire to socket 224, wire 361, contacts 362, plug socket 363, a plug 'wire to socket 261, in the pence order of printing bank, contacts 114, magnet PM and, line 202.

In the adding of ten or eleven pence in the lowest order of the accumulator a diiferent mode of entry is employed. The perforations representing these two amounts are placed at the top of the column of index points on the record card Referring to Fig. 3, it is noted for the perforation in the fourth column from the left that the X position represents 10 pence. A perforation in the 9th column at the R index position represents 11 pence. These two perforations are sensed as the card passes through the upper brushes, one card cycle before the regular adding operation takes place as the card passes through the lower brushes. The sensing of such perforations causes contacts to be adjusted for the early meshing of the accumulator wheels to add the amount of 10 or 11.

Considering first the mode of operation for the entry of 10 pence, the sensing of an X perforation in the pence column sets up a controlv cir- 5 cuit which may be traced starting with line 202 (Fig. 12A) through wire 218, common brush 230, contact roller 231, brush UB in the lowest order, socket 232, a plug wire to socket 233, magnet R10, wire 364, brushes 365 which make contact with a segment 366 on a commutator 361 which is rotated in synchronism with the feeding of thecircuit including magnet R156. The circuit may be followed from line 200, wire 369, contacts CF15, wire 310, contacts R10A, holding magnet R10H and magnet R156 and wire 311 to line 201. The energized magnet R156 holds contacts 351' opened and contacts 312 closed during the following cycle to add 10 pence into the accumulator. The circuit through accumulator magnet AP The energized magnet v R10 closes contacts R10A and sets up a holding I for the additionof 10 pence may be followed from line 202 (Fig. 123) magnet AP, contacts 114, wire 352, wire 360, contacts 359, wire 358, contacts 312 operated by magnet R156, wire 313, brush 10A cooperating with a commutator 314 provided with a spot 315, contacting brush 10A, early in the adding operation at the time cal-- culated to mesh the accumulator wheel to add the value 10. The circuit continues through spot 315 to a contact ring 316, common brush CA, contacts R6B, wire 311 (Fig. 12A). wire 318, wire 246, and contacts GL2 to line 200.

During the adding of the 10 pence in the lowest order of the accumulator, the number ten is printed on the record sheet 1 16 (Fig. 4) as shown by the second item on the sample sheet. For this purpose, two orders of the printing device and two type bars are associated with a pence order of the accumulator. When the magnet R10 is energized by the appearance of the X perforation, the contacts RIOB (Fig. 12A) are closed to effect the entry of an impulse at the onetime in the operation of the machine to cause the tens of pence order of the type bars to print the figure l. followed from line 202 (Fig. 12A) through the pence order of the printing magnet PM, contacts 114, plug socket 261, plug wire to socket 319, contacts R10B, wire 380, contacts CF3 closed at the one index point, wire 381, wires 318 and 246, and contacts GL2 to line 200. In the lowest order of the printing bank, the figure 0 will be printed since no perforation is sensed through contacts 362 during the rising movement of the lowest order type bar. will rise to the highest position with the 0 type in-line with the printing hammer.

The entry of 11 pence into the accumulator involves an operation somewhat different from the entry of 10 pence. The existence of a perforation in the R position on the card is sensed as the card passes the upper brushes. The circuit through the lowest order of upper brushes U3 is similar up to the socket 233. There, the impulse is directed through magnetRlI through wire 382 and brush 383 because the spot 384 on commutator 385 is timed to make contact as the R position is passing the upper brushes. The circuit continues through brush 386, contacts CF5, and contacts R2A to line 200.

The energized magnet R11 closes contacts RNA and sets up a holding circuit through-holding magnet R1 1H and R151. The holding circuit includes line 200, wire 369, contacts CF15, wire 310, contacts RIIA, magnets RHH and R151, wire 311 and line 201. Magnet R151 then closes contacts 381 (Fig. 123) to connect the pence order magnet AP to a circuit timed to operate the accumulator gear for a movement of 11 steps. The circuit runs from line 202 (Fig. 123) through magnet AP, contacts 110, wire 352, wire 360, contacts 359, wire 358, contacts 351, wire 356, contacts 381, wire 388, brush HA, commutator segment 389, contact ring 316, brush CA, contacts R6B, wire 311 (Fig. l2A), wire 318, wire 246 and contacts CLZ to line 200.

At the same time that the value 11 is added in the pence bank, the two lowest order printing banks are operated to print the number 11. To do. this, the magnet R151 opens contacts 362 (Fig. 12A), and closes contacts 390 at the same time magnet R11 closes'contacts R11B. After these connections are made, the closing of contacts CF3 at'the one index po nt directs a pair of impulses through plug sockets 363 and 319 The listing circuit may be Therefore, this type bar energizing the two lowest order printing magnets PM in time to print two figures one as shown in the fourth item on the same record in Fig. 4.

The appearance of a perforation at the X posi tion on the card may not only indicate the value of 11 pence, but its presence in certain columns, when the machine is plugged for control in subtraction, may indicate that the card carries a credit item which is to be subtracted from other amounts such as debit items carried on cards free from such special perforations as perforation 2 in Fig. 3.

When the cards are fed through the machine they pass first under the upper brushes and then one cycle later under the lower brushes. As the card passes under the upper brushes it is sensed to determine Whether it carries a credit item accompanied with a special perforation such as the X hole 2. If such a perforation is sensed, certain relays are energized to shift contacts so that the complement of the number on the card is added in the accumulator. If desired, true numbers of such credit amounts may be added at the same time that the complements are entered into another accumulator then it is necessary that the accumulator orders be divided into two sections, one to receive the true numbers of credit items and complements of debit items and the other to receive two numbers of debit items and complements of credit items. Such construction is shown in the copending application of A. W. Mills, referred to hereinbefore.

In the present case, the accumulator is shown as having only. one accumulator designed to add and subtract English currency. It is understood that a pair of such accumulators may be provided to handle simultaneously debit and credit amounts.

The subtraction control circuit is as follows: from line 202, wire 2!.8, common brush 230, contact roller 23!, an upper brush UB in a column plugged for sensing special perforations, plug socket 232, a plug wire to socket 39!, magnet KC,

contacts CF8, wire 32!, contacts R2A and line The energized magnet XC closes contacts 234 and sets up a holding circuit through magnets MC1 and to magnet XCH. This circuit is from line 200, wire 369, contacts CF22, wire 392, contacts 234, magnets X0 and MC! and line 20!.

The energized magnets MC! operate a seriesof contacts 244, 245 to deenergize certain relays and energize other relays for the shifting of subtraction control contacts throughout the machine. Normally, the contacts 245 are closed to energize relays R41, R49, Rl23and Rl25 to control the direction of an adding impulse for the addition of a debit item. An example of a cir- 0 cuit through one of such relays may be followed from line 200, through contacts CL2, wire 393, jack 394, plug wire to socket 241, contacts 245 normally closed, socket 248, plug wire to socket 395, magnet R41, bus bar 396, contacts CF26, and wire 31! to line 20!. On the operation of magnet MC1, contacts 244 are closed and then the circuit is directed through plug socket 252 and a plug wire to socket 391, magnet R46, bus

bar 396, contacts CF26, and .wire 31! to line 20!. By reversing the plugging in certain orders, such as the highest order, in running a plug wire from 252 to 395 and from 248 to 391, a complement may be entered as other orders enter true numbers. For ordinary adding operation the magnet R41 is energized by plugging directly from socket 394 to 395.

Considering first the entry of a complement in the ordinary accumulator banks other than the pence bank and half pounds bank. In these orders, the accumulator magnet A is energized at the 9 index position to start the accumulator wheel revolving. The operation of accumulation continues until the associated magnet SC is energized by the appearance of the perforation at a certain index point in a related column on the card. The differential position of the perforation determines the complemental value of the figure entered.

A circuit for the clutching of the accumulator wheels at the 9 index position may be traced from line 200 (Fig. 12A), contacts CL2, wire 24B, wire 318, wire 311 (Fig. 12B), contacts CF28 closed at the 9 index position, wire 398, wire 399, contacts R|22A closed by magnet Rl22 during subtraction, contacts PBCA, wire 35!, wire 352, contacts I14, through magnet A to line 202. This serves to start the accumulator wheel revolving and the operation of the wheel continues until a perforation is sensed, then a circuit is directed through the related magnet SC (in the present instance the pounds order magnet) for the termination of the complement entry. A' circuit may be followed from line 200, contacts CL2,

wire 246, contacts CF2, common brush 2! 9, contact roller 220, lower brush LB, socket 22!, a plug wire to socket 224, through cable 225 (Fig. 123) contacts R! 23A closed for subtraction, wire 400, contacts I14, magnet SC and line 202.

The entry of a complement in the half pounds or tens of shillings order follows a somewhat similar course of operation. However, in this order, it is unnecessary to add more than 1 as a complement at any time. The bank is designed to transfer when amounts larger than one are added in it. Therefore, the related accumulator magnet AH is energized at the one index position for the meshing of the accumulator wheel to start the entry of a unit when a zero is presented in the related column on the card. The circuit through magnet AH may be followed along a circuit from line 200, contacts CL2, wire 248, wire 318, wire 38!, contacts CF3 closed at the one index position, wire 40! (Fig. 12B), contacts RI22B, contacts PBCA, wire 35! wire 352, contacts I14, m'agnet AH to line 202. The circuit terminating the complement entry operation is directed through a hole in a card to cable 225, contacts RI23A, wire 500 and magnet SC associated with magnet AH in the same manner as described above in connection with the termination of the complement entry in the pounds order.

For the entry of a complement in the pence order, the accumulator magnet is energized at a time corresponding to a twelve index position, in other words, the magnet is energized three index points before the regular nine index point position. This is done so that a complement of any number of pence from zero to eleven may be entered into the lowest order. The pence complement entry initiating circuit may be followed from line 200, contacts CL2, wire 248, wire 318, wire 311 (Fig. 12B), contacts RBB, contacts CA, contact ring 316 on commutator 314, a contact spot 402.1ocated on the commutator in a position to contact a brush position. 403, contacts R!24B, wire 35!, wire 352, contacts I14 and magnet AP to line 202. The related !2A at the 12 index The circuit continues through wireaccumulator wheel is meshed .withthe drivin gears and rotation is started and continued until magnetSC. is energized. If SC is energized by any of the ordinary digit perforations to 9, thecornplement terminating circuit follows a path which may be traced from the line .200,

contacts 0L2, wire246, contacts CF2, brush 2", contact roller 220, lowest order brush LB, socket 22l, plug wire to socket 224, cable 225, wire 353, contacts PBCA, wire 354, contacts 355, contact wire 355, contacts 351, wire 353, contacts 404, wire 405, contacts I14, magnet SC ,in the pence order, and line 202. 1

Should the values or 11 be perforated in the pence column of index points, it is necessary to energize magnet SC early in the complement entering operation. This is done so that the value 2 which is the complement of 10 or the value 1 which is the complement of 11 may be added in the pence order. This early energization of SC is taken care of by the sensing of the X and R perforations under the upper brushes one cycle before the complement operation, just as in the adding operation they were sensed ahead of time and in the same way as in adding, the magnets Rlll or RH are energized according to whether a 10 or 11 perforation is sensed.

The control magnets Rl55 and RI5I are operated selectively to close contacts 312 or 331 to make connection with commutator 314 in the same manner as in adding. The only difference being that in subtraction, the contacts 359 are opened and the contacts 404 are closed so that the special perforations are directed through pence magnet SC instead of magnet AP. In this way, the 10 and 11 impulses are added to'pass through magnet SC to follow soon after the starting 12 impulse through magnet AP for the entry 40 of the complements 2 or 1 in the pence order.

The printing of amounts during subtraction of the values in the accumulator is similar in operation to the entry of printing impulses during addition. In the orders other than the pence 5 order, the printing impulses follow the regular course from the lower brushes through socket 22! along a plug wire to socket "I through contacts I14 and magnet PM. The true credit values perforated in the card are those represented on 50 a record sheet. In the two printing banks associated with the pence order, control is again selectively effected through contacts 352 or con tacts 390 or RIOB or RIIB. The printing impulses for the representation of the digits 0 to 9 55 are directed through contacts 352. The printing of 10 and 11 is controlled by the closure of contacts 390 and RIOB and the closure of 390 and both HIGH and of RI IB, respectively.

The special perforation 2 (Fig. 3) has a further 60 use under control of class selection or class elimination. In other words, the appearance of this perforation on the card may be used to control the machine to eliminate the addition or printing of the amounts represented thereon or to 05 cause amounts in a plurality of fields on the card to be directed into a. single set of printing banks or accumulator orders. For this purpose, the upper brush sensing the column allotted for the reception of the special perforation 2 is connected T0 with a class selection magnet CS.

The circuit is as follows: from line 202, through wire 2l8, brush 230, contact roller 23!, upper brush UB, socket 232, plug wire to socket 405,

through magnet CS, contacts CF8, wire 32!, con- 75 tests-BIA and line 200.

ing circuit through magnet CSH and a set of associated magnets MCR. A circuit through magnets MCR, includes wire 369, contacts CFl5,

The energized magnet CS closes an associated pair of contacts CSA and CS3 to set up a hold-.

wire 310, contacts CSB, magnets MCR and wire 1 3'. The operated magnets MCR serve to shift These contacts-may be connected between the lower brushes and the adding and printing magnets in many ways to direct the impulses controlled by the card. 1

The same contacts may also be used during the taking of totals to select the 'orders in'the accumulator to be connected to the printing magnets for the control of the printing of the balance.

Transferring from one order to the next higher order in an accumulator is efiected as explained in connection with the mechanism shown in Figs. 5 to 11 inclusive. Wiring connections for these transferring mechanisms are shown in Fig. 123. If the accumulator wheel of any order passes to 0 during an adding operation, it will cause the contacts 81 to close (see Fig. 10). The closure of these contacts sets up connections as part of a circuit directed through a higher order adding magnet. After the accumulator wheels are disengaged in adding, the contacts CFIO and CBI3 (Fig. 123) are closed momentarily. These contacts are in line with transferring contacts 81. The closure takes place after cam 5| (Fig. 7) passes the extension 53 on clutch lever 41 so that at this time the lever is free to be operated again to mesh the accumulator wheel with the driving gear.

A transferring control circuit may be traced through the pence order as follows: from line 200, through wire 50!, contacts CFIO, wire 401, contacts CBI3, wire 408, contacts 31 in the lowest order, wire 409, contacts PBCB closed during transferring, wire 35l, wire 352, contacts I14, and accumulator magnet A in the units of shillings order.

As soon as one step of transferring movement is imparted to the units of shillings wheel, the cam point 52 (Fig. 7) cams the pinion 31 out of mesh so that the accumulator wheel again stops after having received an additional step of movement.

If the shillings accumulator wheel should-happen to be standing at 9 when the transfer impulse is directed through. the related magnet A,

the impulse is carried on to the next higher order magnet through the closed contacts 85. With the wheel at 9, the contacts 35 are closed as seen in Fig. 11. Therefore, when the transferring impulse passes through wire 409 to wire 35I, it may also pass through contacts 85 and. wire4l0 to magnet AH in the third order.

The transferring operation is the same in all orders in depending on the condition of trans ferring contacts 85 and 81. The operation of these contacts differs in the three different forms of accumulator orders as pointed out hereinbefore. With the ordinary type of decimal wheel shown in Fig. 5, contacts 81 are closed as the wheel passes from nine to zero. In the 12ths or pence orders (Fig. 10), contacts-'81 are closed as the wheel passes from 11 to 0. The half pounds order is adapted to operate contacts 81 as a wheel 36h (Fig.6) passes from 1 to 0. The other transfer contacts'85 are operated by the wheels 35,

361), 36h, when the wheels stand at the 9, 11 or 1 positions respectively.

The machine is provided with group control devices for sensing and comparing the group number perforations on successive cards under the upper and lower brushes. For this purpose 5 each one of a group of magnets GC is connected in series with an upper and a lower brush. A

plug wire may connect jack 2" to jack 232, and

another plug wire may be placed between jack 268 and jack 22! in a related column. Then, if 0 the perforations in a certain column on successive cards agree in index position, the related magnet GC is energized to prevent the taking of an automatic total. The magnets GC are associated with-contacts 209 in series with group control holding circuit magnets GCH, so that when magnet GC is energized, contact 209 is closed and is held closed by the energized magnet GCH which at the same time opens a group control contact 210. The circuit through magnets GCH is from line l, wire 2, wire 2', magnets GCH, contacts 289, contacts CFIZ, and wire 322 to line 200.

The opened contacts 210 prevent the energize.- tion of the minor group control magnet MI which may be connected in series to one or more of said contacts in parallel by plug wires from jack. 2H to jack JGC.

When one or more of the contacts 210 remain closed indicating a change in record card group, the connected group control magnet MI is energized. The circuit is from line 20L wire 2 l1, contacts CRi, wire 2T5, magnet MI, switch MIS, Jack. 214, plug wire to the secondiaclr JGC, one or more contacts 270, contacts CFE closed after comparing cards, wire 248 and contacts GL2 to the line 200. The energized magnet MI acts to operate contacts MIT and energize the magnets MIC which control the MI contacts throughout the machine, opening some and closing others to stop the regular adding and listing operations of the machine so that an automatic total taking operation may take place. The circuit through magnets MIC may be followed from line 200 to wire ME, contacts PMS, contacts MIT and through magnets MIC to line 20!.

One of the magnets MIC operates to close contacts M12 to energize the total selection control magnets TSC and TM. The circuit is from line 28-0 through magnets TM and T86 in parallel through contacts CRI3, wire 286, contacts M12,

contacts CR3 and wire 320 to line 2!.

The energmed magnets TM then act to shift a number of sets of contacts I14, I15 already noted in connection with the wiring in Fig. 123. The other magnet TSC closes contacts 206 (Fig. 12A) to establish minus balance testing and holding circuits for total selection.

The testing circuit is connected from line 200 through contacts CBZl closed at the testing time, contacts TCZ closed by magnet TSC, wire 4| l, wire- 35l, contacts 85 closed when wheel is at 9 registering a complement, wire 2, plug socket 289, and plug wire to socket 290 (Fig. 12A), through contacts 286 and magnet R20 to line 20!. If the highest order accumulator wheel does not stand at 9, it is an indication that the accumulator contains a true number or a debit balance and the transfer contacts 8!; remain open and the magnet R20 is not energized. However, should the accumulator contain a negative balance, the highest order wheel is at 9 and the contacts 85 are closed with magnet R20 effective because of the circuit traced. With the use of this highest order wheel for minus balance testing, the

capacity of the accumulator is understood to be one order less than the number of orders or banks provided. when the magnet R20 is energized, it is adapted to operate contacts RNA and R203 to form a holding circuit for R201! and at the same time energize class or balance selection magnets MGR. The circuit used for the energization of magnets MCR. during total taking may be followed from line 200, through contacts OBIS, wire 3, contacts R208, magnets MGR and wire 3'" to line 20L The energized magnets MGR operate class or balance selection contacts 288 and 300 to shift the total taking impulses from connecting one accumulator to another or the elimination of total printing when only the complement of a total is registered. As shown, the accumulator banks are connected to act as one unit, but it is possible to divide the orders shown into two banks of accumulating orders and thus have a positive and negative balance accumulated separately. Then such contacts as 299 and 300 may be used to connect the printing devices to that certain one of the accumulators which holds the balance as a true number.

In the total taking cycle, the magnets A, AP and AH are energized automatically to clutch the accumulator wheels to the driving gears and start the wheels revolving towards the 0 position. The pence order magnet is energized at a point in the cycle three index points before the nine index point. The circuit may be followed from line 200, through contacts C322, closed early in the operation, contacts M18, sockets MP, a plug wire to socket All through cable 410, to contacts H8 in the pence order, magnet AP and line 202.

The cancelling circuit through the. ordinary adding magnets A may be followed from line 200, through contacts CBl'i closed at the ten index point, contacts M14, plug socket MT, a plug wire to socket H6 and through cable 4|! and contacts I15 and magnets A to line 202.

The tens of shillings order wheel is started to revolve in total taking under control of the accumulator magnet AH over a circuit somewhat similar to that used for the magnets A. However, in this order, a commutator H1 is provided in line with the related socket 8 for the purpose of preventing the passage of an impulse at the ten index point. In the same cancelling circuit another contact CB|8 is provided and closed at'the two index point to start the related tens of shillings wheel 36h (Fig. 6) moving back to the 0 position. The circuit provided for the meshing of this order late in the total taking cycle may be followed from line 200, through contacts CBIB, contacts M14, socket MT, plug wire to socket 8 through commutator 1 which permits passage of an impulse at two index point, cable M5, contacts 115, magnet AH and line 202.

' The reason the tens of shillings or half pounds wheel is started to turn so late in the total taking cycle is because it never accumulates more than one unit and, therefore, the projection 06 (Fig. 6), is always close to the end 83 for oper-' ating the closing of contacts 81 and the printing of the total.

' When the magnets A, AP and AH are energized, the related accumulator wheels 35 (Fig. 7) are clutched to the driving gears and continue to turn until they arrive at the 0 position. Then the transfer contacts 81 are closed to direct impulses through magnets SC for declutching accumulator wheels, and similar impulses are directedthrough magnets PM to eilect the control of total printing.

During total printing, the projection 86 on wheel 38 approaches the end 83 of lever 11 in synchronism with the rising of the type bars. The type bars are stopped in differential positions according to the time of energization of control magnets PM which time, in turn, is controlled by the number of steps that projection 88 is removed from end 83 at the beginning of a total taking operation. As the wheel 36 moves into the position, contacts 81 are closed to energize the related printing magnet PM and also energizes magnet SC to declutch the accumulator wheel from the driving gear and leave it in normal position.

An example oi. a total printing circuit in. one of the ordinary decimal orders may be traced on a diagram in Fig. 123. The circuit starts at line 200, then through contacts CFl0 held closed during total taking because they are opened only when cards feed, wire 401, contacts CBI3 or CBI4, wire 408, contacts 81, wire 8, cable 420 (Fig. 12A), plug socket 42!, a plug wire to socket 308, contacts I18, magnet PM and line 202. At the same time that this impulse is directed through the printing magnet, the circuit branches at contacts 81 through wire 422 and contacts I15 to direct a similarly timed impulse through the related declutching magnet SC. Thus, the number registered in the accumulator wheel is printed and the wheel is held in the 0 position.

The printing and the declutching operations in the half pounds order is-similar to the operation described with relation to the ordinary decimal orders. The only diilerence being as already pointed out that the energization of magnet AH is delayed until the two index position is reached after which time the operation of the related contacts 81 may result in printing of the figure 1 in the tens of shillings order.

The total printing and zerolzing of the pence order is accomplished by special devices provided between the single accumulator wheel and the pair of type members controlled thereby. In this pence order should the wheel 36P (Fig. 10) stand in the 10 or 11 position, operation of the wheel in total taking will cause an early closing of total control contacts 81. The impulse thus initiated will disconnect the usual connections .between the pence accumulator wheel and the lowest order printing control magnet PM and at'the same time establish other connections for the printing of 10 or 11 by the two lowest order printing magnets.

wire 423, brush 424, commutator 428 which estab lishes contact between 424 and another brush 426 during the. last nine index points of movement in total taking, then through wire 421, contacts RIBIA, plug socket 428 and a plug wire to socket 308 (Fig. 12A) in the lowest order, contacts I18, and printing control magnet PM to line 202.

As printing control is effected, another impulse is directed through the lowest order magnet SC to hold the accumulator wheel in the 0 position. The total control circuit continues through contacts 81, wire 423, through wire 428 and contacts H5 through magnet SC to line 202.

Should the pence wheel be standing at when ing contacts 0323.

a total taking operation is initiated, the contacts 01 are closed before a connection is made between brushes 424 and 426. However, the impulse initiated by the early closing of contacts .81 follows another path to energize a magnet Ri12 tor the control oi .both lower order printing banks for the printing of the numeral 10. This circuit con- I tinues through contacts 01, wire 423, wire 42 8, wire 480, magnet Ri12, commutator 43i establishing contact between brush 432, and brush 433 early in the total taking operation. The energized magnet Rl12 closes contacts RI12A (Fig. 12A) to set up a holding circuit through magnet RI12H and another magnet RAM. The circuit through these magnets may be followed from line 200, through contacts CBI8, contacts Rl12A,'magnets RI12H, RIM, and wire 31I to line 20l.

The magnet Rl8l operates the contacts RI8IA, previously mentioned, to disconnect the lowest order printing control magnet from the usual circult through plug socket 428. The result bein that a 0 is printed in the lowest order. The other magnet R112 closes contacts RI12B in line with other contacts C823 which are closed at the one index point position o control the printing mag net PM for stopping the related type bar in posi tion to print the numeral 1 in the second lowest order. A circuit through RI12B can be traced from line 200, through wire 434, contacts C323, contacts RI12B, plug socket 435, and plug wire to socket 308 (Fig. 12A) in the second lowest printing order, through contacts I15, magnet PM to line 202. The above described control of the two lower order printing banks causes the printing of the multi-denominational figure 10 under control of a single accumulator wheel registering the value 10 before the taking of a total.

' Should the pence order accumulator wheel in the 11 position is used to energize magnet.

Rl12 and another magnet BI 13 for the control of both lower order printing banks for the printing of the numeral 11. This impulse occurs at a point in the operation when brush 424 is disconnected from brush 426. The total printing control circuit I continues through contacts 81, wire 423, wire ,428, wire 430 and wire 436 to magnet Rl13 and continuing through commutator 431 establishing contact between brush 438 and brush 438 earlier than commutator 43| in the total taking cycle. At the same time that R113 is energized Rl12 is also energized by a circuit already described. Both circuits set up holding circuits by closing contacts RI13A (Fig. 12A) and contacts RI12A. A circuit may be followed from line 200, through contacts CBi8, contacts R|12A and RI13A, magnets Ri12H, RI13H and RAM, and wire 31l to line 201.

The energized magnet RI8| acts in the usual way to open contacts R|8IA to prevent the passage of impulses from commutator 425. The energized magnet R|12H operates in the usual way to connect contacts RI12B to the line includ- The active magnet RUSH closes contacts RI13B to connect plug socket 428 to contacts 0323 for the direction of an impulse controlling the printing of 1 in the lowest order. Thus, through the connection of both plug sockets 428 and 436 to the contacts C1323 closed at the one index point position, both lower order printing bars are adapted to be stopped in a position wherein the numeral 1 type is on the printing line.

Since the basic novel features of the invention have been shown and described as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and changes in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.

What is claimed is:

1. In a machine controlled by a perforated record with digit index points each representing a digit and a plurality of special index points each representing a multidenominational number, an accumulator wheel, a driving means for said wheel, a magnet controlling the engagement of said wheel with said driving means, means for sensing said digit index points and controlling the energization of said magnet at a diflerential time to operate said wheel to add a digit corresponding to the index point perforated, means for sensing said special index points and controlling an early energization of said magnet to operate said wheel to add a multidenominational number corresponding to the special point perforated, and means for disengaging said wheel from said driving means at the end of an adding cycle.

2. In a. machine controlled by records arranged with perforations in columns of index points, each column containing points for the digits 0 to 9 and special points for the numbers 10 and 11, an accumulating wheel, means for sensing the digit points, means under control of said sensing means for operating the accumulator wheel to add a digit, other means for sensing perforations in the special points one cycle before the sensing of said digit points, and means under control of said other means for operating said accumulator operating means to turn said wheel to add 10 and 11.

3. In a machine controlled by a perforated record with a plurality of special index points above the digit index points, means for first sensing said special points on records, other means for sensing said records after said first means, an accumulator wheel, means under control of said first sensing means for operating said accumulator wheel to add a number larger than a digit, and means associated with said operating means and controlled by said other sensing means for operating said accumulator wheel to add a digit.

4. In a machine controlled by records with digit perforations and a special perforation, an accumulator, means under control of the digit perforations for adding digits in said accumulator, a pair of typebars, one for the units order and one for the tens order, means under control of the digit perforations for positioning the units order typebar to print corresponding digits, and means including said adding means under control of said special perforation for operating said accumulator to add multidenominational numbers and for positioning the tens order bar in addition to operating the type bar positioning means to position the units type bar so that both bars together print plural ordered numbers.

5. In a machine controlled by records with digit perforations and a special amount perforation, only one perforation of either kind being present in the same column of the record, an accumulator, means under control of said digit perforations for subtracting corresponding amounts in a certain single order of said accumulator, and additional means cooperating with said subtracting means and under control of said special perforation for subtracting a multi-denominational amount in said single order of said accumulator.

6. In a machine controlled by records with digit perforations, special amount perforations and a subtraction control perforation, an accumulator, means under control of said control perforation and one of said digit perforations for operating said accumulator to add the twelfths complement of any digit corresponding to a digit perforation, and means cooperating with said accumulator operating means under control of said control perforation and one or the other of said special perforations for operating said accumulator to add the twelfths complements of 10 and 11.

'7. In a machine controlled by records with digit perforations and perforations representing duo-decimal amounts, said digit and duo-decimal perforations being arranged in one column on the records, an accumulator with a plurality of denominational order wheels, means under control of said perforations for operating the units order accumulator wheel to accumulate digits and duodeoimal amounts, 9, pair of typebars, and means under control of said units order wheel for ad justing said pair of typebars to print the total duo-decimal amount accumulated thereon.

8. In a machine of the class described, an accumulator comprising a plurality of denominational order wheels, means for adding digits and duo-decimal amounts and twelfths complements thereof on the units order wheel of said accumulator, a pair of units and tens typebars, both under control of said units order wheel, means under control of said wheel for adjusting the units typebar to print a total digit, and means under control of said wheel and selectively operated thereby according to the magnitude of the amount registered thereon for adjusting the tens typebar to print a total duo-decimaLgiglt.

9. In a machine controlled by records with digit perforations, duo-decimal perforations, and a subtraction control perforation, an accumulator comprising a plurality of orders, means under control of said digit and duo-decimal perforations for operating an order of said accumulator to add amounts represented thereby, means under control of said digit and duo-decimal perforations and said control perforation for adding the twelfths complement of the amount representing perforations in said order of said accumulator, a pair of typebars, and means under control of said order of the accumulator to adjust said typebars to print the accumulated balance as a true number.

EDWARD J. RABENDA.

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