US2113229A - Multiplying device - Google Patents

Multiplying device Download PDF

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Publication number
US2113229A
US2113229A US662687A US66268733A US2113229A US 2113229 A US2113229 A US 2113229A US 662687 A US662687 A US 662687A US 66268733 A US66268733 A US 66268733A US 2113229 A US2113229 A US 2113229A
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Prior art keywords
card
contacts
machine
relay
control
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US662687A
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English (en)
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James W Bryce
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International Business Machines Corp
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International Business Machines Corp
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Priority to US662687A priority Critical patent/US2113229A/en
Priority to GB32337/33A priority patent/GB428794A/en
Priority to DE1934I0049303 priority patent/DE688520C/de
Priority to FR784793D priority patent/FR784793A/fr
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/46—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using electromechanical counter-type accumulators
    • G06F7/462—Multiplying; dividing
    • G06F7/465—Multiplying; dividing by partial product forming (with electric multiplication table)

Definitions

  • a further object of the present invention resides in the provision of a multiplying machine with a code number control to enable the ma- ⁇ chine to perform multiplying computations in a selected manner with selective deriving of the 20 multiplier to be used in the computation from a plurality of multipliers upon the record from which the multiplicand is derived.
  • a further object oi' the present invention resides in the provision of a multiplying machine 2f with an improved code number control therefor to enable the machine under code number control to automatically effect and select multiplications of multiplicand amounts by selected multipliers derived selectively from multiplier data on conf30 trolling records and/or from hand setup multif plier devices.
  • a further object of the present invention resides in the provision of improved controls for an automatic multiplying machine to enable the y* 35 machine to function with a minimum number .45 controlling machine operations in accordance.
  • FIGS. 1 and 1a taken together show a diagrammatic view of the various units of the machine and also show the driving devices for the various umts;
  • Fig. 2 is a central transverse sectional view of ⁇ the card handling, reading and punching section of the machine. This section is taken substantially on line 2 2 oi' Fig. 1a;
  • Fig. 3 is a side elevational and positional view 15 o! one of the multi-contactelectromagnetic relay devices which are used in the machine;
  • Fig. 4 is a viewof a modified contact arrangement showing' certain pairs of contacts adapted for closure and another contact pair adapted to be opened upon the operation of the relay device;
  • Fig. 5 is a front elevational view of one of the hand setup devices used in the machine for setting up a control number
  • Fig. 6 is an enlarged detail sectional view, the 25 section being taken substantially on line 6 6 of Fig. 5
  • Figs. 7 and 8 respectively are similar views of another of the hand setup devices used in the machine for setting up multiplier amounts by hand; Fig. 8 being a sectional viewtaken on line -Bof Fig. 7;
  • Fig. 9 shows somewhat diagrammatically the arrangement of the MPRO (multiplier) readout device and the driving train therefor;
  • Fig. 10 is a fragmentary sectional view of the MPRO readout device
  • Fig. 11 shows somewhat diagrammatically the arrangement of the MCRO (multiplicand) readout device and the driving train therefor;
  • Fig. 12 is a fragmentary sectional view of this MCRO readout device
  • Fig. 13 shows somewhat diagrammatically the arrangement of the RHRO (right hand partial product) readout device and the LHRO (left hand These readout devices are substantially the same in construction except ior the number of segment spots provided;
  • Fig. 14 is a fragmentary sectional view of one 50 of the readout devices shown in Fig. 13;
  • 'I'he machine embodies a card feed, card handling and a punching section which are shown in the upper right hand section of Fig. la and also shown in cross-transverse section in Fig: 2.
  • This part of the machine is arranged to feed cards, derive readings therefrom and afterwards pass each card into a punching mechanism where such card is punched.
  • This punching mechanism is preferably of the gang punch type wherein there is a preliminary selection of punches for punching and a subsequent concurrent displacement of the selected punches through the card.
  • the machine also includes a number of counters and receiving devices which may be enumerated as follows.
  • the usual RH accumulator and an LH accumulator designated RH and LH on Fig. l.
  • RH and LH are respectively designated RH and LH on Fig. l.
  • two hand setup devices for multipliers which are respectively designated MP-i and MP-2.
  • Also disposed in the upper part of the machine are four hand setup devices for control numbers respectively designated C-I, C-2, C-3, C-4.
  • the setup device for the control numbers and the setup devices of the multipliers are connected by cables to'the other sections of the machine as will be shown in the wiring diagram.
  • the lower part of the machine there are two counters used as multiplicand and multiplier entry devices and such counters are respectively designated MC and MP.
  • the machine also includes a multi-contact multiplying relay unit which is in the lower part of the machine (see Fig. la) and generally designated MPR. In the lower part of the machine there is also provided in the column shift relay unit generally designated CS. Certain additional electromagnetic multi-contact relays generally designated CR, are also located in the CS section of the machine.
  • the machine also includes a number of emitter mechanisms and cam contact devices which will be subsequently described.
  • Machine drive The machine is adapted to be driven by a constantly running motor M (Fig. 1). 'I'his motor, through a belt and pulley and ratchet drive drives a shaft 5
  • Shaft 5l, through worm gear drive 53 drives a vertical shaft 5l which shaft drives the units in the upperl and lower sections of the machine.
  • the drive to the upper units is provided as follows.
  • Shaft 54, through worm gearing 55 drives the counter drive shaft 55.
  • Reset drive for the upper counters is provided as follows.
  • Shaft 55 is provided with a spur gear 51 driving a gear 55 with a four to one drive ratio.
  • Gear 58 has extending from it four Geneva pins cooperating with the cross-element of the Geneva designated 50.
  • Secured to 50 is an internal gear 5i which gear has cooperating with it a spur gear 51 mounted on the end of the reset shaft 53.
  • Electromagnetically actuated one revolution clutches are provided for effecting selective reset of the various counters.
  • the drive for the units in the lower part of the machine is substantially the same as previously described for the upper units. that is, shaft 54, through worm gearing IIb drives a shaft 55h.
  • a similar Geneva drive 51h, 55h, and "b is adapted to drive an internal gear Hb which in Card feed, card handling and reading and card punching unit drive Referring to Figs. la and 2, the shaft 55 near its extreme right hand end is provided with a gear 6I which drives a gear 69 freely rotatable upon a shaft 10 but having fast to it the notched element 1I of a one revolution clutch.
  • 'I'he complemental part of this clutch comprises a pawl 12 carried by an arm 15 which is fixed to shaft 10.
  • This one revolution clutch is engaged by the energization of the usual clutch magnet I5.
  • shaft 10 With the clutch engaged, shaft 10 will rotate in unison with gears 59 and 5l and in unison with the counter drive shaft 56. With the clutch disengaged, shaft 10 will be stationary while shaft 55 will continue its rotation of movement.
  • Shaft 10 through spiral gearing generally designated 1I drives the lower of a series of pairs of card feed rolls designated 15, 15a, and 15b (see Fig. 2).
  • 'I'he shaft 1l also drives two gears on contact rolls 15 and 11 by gearing extending to certain of the rolls 15 (see Fig. la).
  • Cooperating with the lower feed rolls 15 are upper feed rolls 1l of the usual construction. These rolls 1l are preferably gear driven in unison with the lower feed rolls.
  • An upper roll 51a is also provided,
  • rolls 15a and 15b are arranged to have a slightly higher peripheral speed than rolls 15 and 1l and 15b and 15b. This may be secured by proper proportioning of the roll diameter or by the gear drive to rolls 15a and 15a. The purpose of providing the greater peripheral velocity is to ensure that a card in the punching die is fully advanced to abut against the card stop.
  • 'I'he machine is provided with the card supply magazine 19 and the usual discharge hopper 5l.
  • a picker Il of conventional construction and crank operated is driven in any suitable manner from the driving shaft 10 as by the driving train 82 shown in Fig. la. v
  • 'Ihe machine is provided with advance sensing brushes Il and a second set of sensing brushes M which respectively cooperate with the contact rolls 16 and 11.
  • contact rolls 15 and 11 are driven from the shaft 10 and preferably the drive is such that these contact rolls slip slightly relatively to the card to cause a slight slipping or creeping action of the contact rolls.
  • 59 and 90 are provided which are adapted to be closed upon the passage of cards thereunder and The usual card lever operated contacts 9,1 lance openupuponthe'failureofacarcitocoopcrate with each respective card lever.
  • Another card 'lever with associated contacts u is provided in the punching section of the machine. Acard leaving the right hand pair of rolls 10 and 10 entere a punching die comprising upper and lower die plates 02 -and 00.
  • Bets of rows of punches are provided suitably supported in a punch-operating frame generally designated 0l.
  • a series of interposer selector bars 00 are pro'vlded, one interposer selector beingprovided for each-row of punches and each selector bar carries ⁇ on its end a punch operating plunger 01, whichplunger slides over the tops of the punches 00 and below the top of the punch operating frame 00.
  • the drive for the punching section of the machine ie provided as follows.
  • the shaft l0 is provided with a gea-rv 00 which in turn drives a gear 00 freely rotatable on a punchoperating drive shaft
  • Gear 00 has fast to it the notched element
  • the complemental part of this clutch comprises a pawl
  • This one revolution clutch is of the electromagnetically controlled type and when engaged bythe energization of the punch clutch magnet 06, shaft
  • is provided with two notches to receive the pawl
  • 00 near its right hand end, through spiral gearing generally designated
  • the gearing drives an interposer cam
  • 06 is adapted to shift a crank follower
  • the interposers 98 are impositively driven from this cross-member
  • the interposers are selectively controlled for position over the punches by means of pawls i2, which engage ratchet teeth in the top of the interposer bars in the usual manner.
  • 2 are electromagnetically tripped by punch selector magnets ll3. After a. given interposer bar or bars have been selectively positioned under the control of the purch selector magnets the punches which are under the ends of the punch operating plungers 91 will positively be forced through the cards by the punch operating cam
  • each card is arrested in the punching die by a card stop
  • Thel feed rolls 10a and 10a urge the card into cooperation with the card stop and after the card has been intercepted by the card stop, these rolls slip relatively thereto before their rotational movement Pterminates.
  • the card stop afterpunching. the card will be 'elected from'the punching die by the rolls 10a and 10a and delivered to the discharge stack by rolls 10b and 10b.
  • a card is removed from the die plates 02 and 00 during the card feed cycle in which a new card is being introduced into the die and being sensed and that the one revolution card feed clutch permits a card to be advanced through one station and then arrested for an indefinite number of cycles and the one revolution punch clutch permits the punch to be called into operation after the requisite number oi' computing cycles. Upon the completion of punching, a new card feed and reading cycle may ensue.
  • the main counter drive shaft 50 is adapted to drive the cams of certain CC cam contact devices, such cams being correspondingly I numbered on Fig. 1 as CC-I to CC-linclusive.
  • cams being correspondingly I numbered on Fig. 1 as CC-I to CC-linclusive.
  • Such cams arecorrespondingly designated FC-I to FC0 inclusive on Fig. 1a.
  • 00 also drives the cams of a PC group cf cam contacts.
  • Such cams are designated PC-I to PC-l.
  • the machine is provided with a series of emitters which are of fonventional construction and which are driven from the 'main counter drive shaft 56 (see Fig. 1). Five of such emitters are provided which are designated
  • 29 is also provided which is driven in unison with the cam contacts CC-I to CC-3. Referring to Fig. 1 the reset gear of the LH accumulator is shown as provided with a cam adapted upon the reset of this accumulator to cause closure of contacts
  • MC readout Referring now to Figs. 1i and 12, in 111g. 1l is shown the brush driving arrangement for the MC readout.
  • 42 drives a units brush assemblage
  • 42 drives a brush assemblage
  • 48 is another brush assemblage
  • FIG. 13 shows the general arrangement of the rcadouts for the RH accumulator and the LH accumulator.
  • 52 are common to two sets of brush assemblages designated
  • 53 as shown in Fig. 13 is driven from the units order clutch gear train
  • 54 on the other hand is driven from the tens order clutch train
  • Hand setup devices In the present machine provision is made i'or at times using a iixed multiplier or multipliers. Hand setup readout devices are provided for these fixed multipliers. Provision is also made for using ilxed control numbers and hand setup readout devices are also used for such control numbers. These hand setup devices are substantially the same in construction as the rea'douts heretofore described. 'Ihey diifer in providing means whereby the brush elements may be positioned manually. There is a knurled wheel provided for each brush assemblage, which knurled wheel can be positioned and turned by hand. Referring to Figs. 5 to 8 inclusive, the knurled wheel is shown at
  • the periphery of this wheel may be provided with suitable designating indicia (see Figs. 5 and 7).
  • the wheel may be impositively held in any set position by a spring detent
  • 62 with ten conducting spots, is provided and there is a single common conducting segment
  • the brush assemblage is generally designated
  • the wiring of the iixed control number readout will be shown and explained in connection with the description of the circuit diagram (see Fig. 15a).
  • four sets of control number setup devices are provided, each set being of a four-wheel type for a four order control number.
  • the hand setup readout devices for the two xed multipliers is substantially the same construction except that the segment
  • each setup device being an eight-wheel type for an eight-order multiplier.
  • MuIti-cOntaCtJeZays The electromagnetically tripped multi-contact relays which are used in the machine multiplying relay section and in the column shiit relay section and control section (see Fig. la) are those of the type customarily used in multiplying machines.
  • the shaft 56h drives operating cams 65.
  • Cooperating with each cam 65 is a follower 66 which is adapted to rock a bail
  • 61 are a number oi' U-shaped members
  • the armature is normally rocked clockwise by a spring
  • 69 has an armature knockoi! arm
  • 69 is an insulated operating contact part
  • 80 are provided, the latter
  • 61 is rst displaced to the position shown in Fig. 3 and the arm
  • a relay magnet X, CS or CR may then be energized, swinging the armature
  • 61 is elevated allowing an antlclockwise motion of member I and permitting the contacts to close under their own spring action and under the influence of spring
  • multiplicand amounts are to be multiplied by a multiplier amount which is to be selected from one of several multipliers, depending upon controlling classifications which are related to the multipliers to be used. For example in billing operations to wholesale and retail customers, a wholesale customer coming under a wholesale classification would be billed at one rate according to one multiplier and a retail customer coming under a retail classiilcation would be billed at a different rate and according to another multiplier. practices would be followed in billing for com' modities sold in bulk, or in packages or broken' lots. Also in ⁇ computations involving ⁇ loans and discounts, one loan of one classiiication might have one interest rate to be used as the multiplier and a loan of a different classificationl would call y for a different interest rate as a multiplier.
  • a code or control number would signify that a correspond-4 tions and in this case such multipliers can be set up by hand to be selectively used under code or control number control.
  • the code or control numbers may conveniently be perforated upon the record cards which contain perforated data representative of the multiplicand amounts which are to enter into the computations and in certain cases some of such records may also be provided with a number of multiplier amounts.
  • 'Ibus records may be passed through the ma- Simiiar chine, each record having thereon a code or control number, and a multiplicandfamount.
  • a card with a code or control number one thereon would call for a multiplication by a certain multiplier which might be termed a number one" multiplier and a card with a number 2 code or control number thereon would call for a multipucation by a different multiplier, say by a num-A ber two multiplier and so on.
  • the machine may be conveniently provided with four hand ⁇ setup devices for four separate code or control numbers.
  • Other hand setup devices may be provided for setting up different multipliers corresponding to or re- .latedwith certain of the setup control numbers.
  • the cards are introduced into the machine.
  • the code number setup devices are set up for the desired control numbers to be used in controlling the computation and the multiplier setup devices are set up with multipliers related to certain control numbers.
  • the machine is then plugged up and then set into operation.
  • control number was number four and this number read from the card matched with the same control number on the number four control number setup device another multiplier amount would be read from the card.
  • the machine reads a control number amount from each card. It then compares this control number reading derived from the card with the various setup control numbers and. upon the control number which is read from the card matching with the control number on any of the setup devices this matching will cause a corresponding selection of multipliers and will automatically effect multiplication of the multiplicand amount which is also read from the card by such selected multiplier.
  • the machine provides for multiplier selection from a plurality of multipliers, such plurality of multipliers may be upon hand setup devices, or they may be upon the record cards, or some may be upon the hand setup devices and others may be upon the record cards.
  • the selection of the multipliers is under code numbe'r control and is brought about upon the matching of a code or control number read from the card with the same control code number upon one of the hand setup devices, which latter devices are correlated with the different multipliers to be selected.
  • the machine If there is a non-matching of control numbers as read from the card with the control numbers of the hand setup devices, the machine passes the card or cards which contain such non-matching control number or numbers and does not eiIect any computations whatsoever. 'I 'he machine furthermore passes such card or cards without going through idle cycles and without eiecting any recording on the card. Such card with a non-matching control number would be immediately passed by the machine to the discharge stack.
  • Accounting operations of this general class are useful in record control accounting machines where it is desired to run cards through multiplying machines without disturbing the order of the cards in the pack.
  • the present machine provides means whereby such operations can be handled without requiring that there be a preliminary sorting operation prior to computing.
  • control number hand setup devices C-i to 0 4 inclusive have been set up as follows: 1234 is set up on C-i, 2345 is set up on C-2, 3456 is set up on C-I, 7890 is set up on C-4.
  • hand setup devices for the multiplier are set up as follows: 204 is set up upon MP--i, 305 is set up upon NIP- 2. The cards which are used in the computation will be punched up with their respective control numbers and with the amount of the multiplicand upon every card and on certain cards which are perforated with control numbers 3456 (corresponding with the set up on C-3) a multiplier amount will be punched on the card.
  • Such multiplier can be assumed to be 278.
  • Circuit diagram a Main line switch i (Fig. 15e) is ilrst closed providing a source of current for driving motor M, setting this motor in operation and causing the A. C.D. C. generator to supply alternating current impulses from the 52AC end (see Fig. 15a) to bus isi and to ground. Direct current supply is also provided by the 52DC end of the generator (see Fig. 15e) to the D. C. buses i9! and
  • the start key (see Fig. 15e) is now depressed closing start key contacts i and energizing relay coil A. Energization of relay coil A will close relay contacts A-2 and current will then be supplied to energize card feed clutch magnet Il through the circuit path traced as follows: From
  • the first card is withdrawn from the supply magazine and sdf vanced to a position where it is about to be read by the brushes Il. For first card operations on starting up the machine the start key is again depressed or maintained depressed for two card feed cycles.
  • plug connections will be made to plug sockets ill, from plug sockets III plug connections will be made to sockets i", from sockets 2" to 2li and from 202 to 2li. Plug connections will also be made from sockets I to the selected sockets of the 2 set which pertain to the control number field of the card.
  • the control number will be read from the card by the brushes I3. Concurrently with the reading of such control number from the card emitter ill is in operation and this emitter has its segment spots wired to transverse bus wiring 2 which extends across the various control number readout devices as shown in the wiring diagram (Fig. 15a). It will be assumed that the card which is passing the brushes I3 is perforated with the control number 1234 which amount is set up on the C-i control number setup device and upon the associated CRO-i read out device. With this amount set up there will be, during the comparing cycle at some time in such cycle, an energization of all four of the control unit pick up relay coils 201.
  • each of the relay coils 2.1 will have caused its corresponding contacts 2li to become closed and the closure of contacts 2 will energize a stick relay coil .20! to maintain 2li closed after the pickup coil 2.1 becomes de-energized.
  • the circuit for energizing any of the 209 coils is as follows. From i, through contacts 200, through 2 back through a wire 2li, through cam contacts FC-J which are closed during the comparing portion of 'a card feed cycle and back to the other side of the line In. With the closure of contacts 20
  • the control number read from the card fails to compare with any ofthe control numbers on any oi the hand setup control devices there will be no energization of any of the relay coils I-E, 2E, i-E. or 4E.
  • the control num- 'ber which is read from the card is concurrently compared with four set up control numbers and if there is a matching comparison with any one of these set up control numbers a corresponding selected relay will be energized.
  • relay coil I-E energized through the control device in the manner previously explained there will be brought about a closure of relay contacts I-E-i and closure of such contacts will maintain relay vcoil I-E energized through a circuit which extends back to the other side of the D. C.
  • the rst card will be in the position just about to be traversed by the sensing brushes 84.
  • brushes 8l traverse the card and read therefrom the amount of the muitiplicand.
  • the multiplicand amount is entered into the multiplicand counter, the multiplicand entry circuits being from the brushes, through sockets 2
  • multiplier entry circuits are to multiplier counter magnets Ill-MP and are alternatively through relay contacts l-CRf-i to I or through relay contacts l-CRf--I to 8.
  • the multiplier amount is not read from the card. but is to be derived from the MP-I hand setup device.
  • This multiplier amount in tra is the amount of 2 It may be here explained that during the cycle -in which the multiplier amount is being entered into the MP counter, that a following comparison is made between the control or code number upon the following-card with the Vcontrol number setup devices. Such comparison ultimately results in a new set up or re-energization of one of the relays I--E, l-E, l-E or I-E and there is a later energization of i-CR, Z-CR, 3-CR or 4-CR.. Such re-energization does not however, occur immediately but is delayed yto permit the previously described reading out cycle to occur followed by the subsequent computing cycle pertaining to the first card.
  • the cycle controller and column skipping arrangement are the form customarily used in these multiplying machines.
  • the cycle controller comprises relay coils Yu, Yt, Yh, etc. with stick relay contacts Yw-i, Yt-i, etc. and column 8 l transfer relay contacts Yu-2, Yt-2. etc.
  • the CS relays on Fig. b are designated CSu, CSt, etc. Such relays have additional control contact pairs CSu-L etc.
  • any brush of the multiplier readout MPRO stands on zero its corresponding 'Y magnet will be energized, current being supplied through line 223, through the zero spots of the MP readout device, then via the correspondin@ brush or brushes on a zero spot or spots to the respective Y magnets and back to the other side
  • a line 224 also extends over and connects with one side of each of the CSu-J to CStm-J group of contacts. The other side of these contacts are wired back to their respective Y magnets.
  • any Y magnet becomes energized the corresponding Y-I stick contacts will be closed and the Y magnet will remain energized.
  • zero is in the tens order of the multiplier and accordingly, Yt will become energized and contacts Yt-2 will be shifted to reverse position from that shown.
  • the energization of the multiplier relay magnet in this instance the X-4 magnet, establishes related contacts pertaining thereto (see Fig. 15e) and at the proper time in the operation of the machine current impulses flow from the emitter
  • Such impulses ilow out over the lines generally designated 22BLH and 226RH to the LH and RH sections of the multiplicand readout ⁇ MCRO.
  • the multiplicand readout device allows selected impulses to ow to the LH component lines 221LH and to the RH component lines designated 221RH.
  • the lines 22ILH and 22'IRH extend down to the various contacts of the CS relays, bein'g wired as shown in Fig.
  • the 15d and the other contacts of these relays connect to the LH and RH lines y 22ILH and 22IRH.
  • the 22ILH lines connect to the 2
  • Energization of this relay permits closure of the related contacts I-CR-I to I6 and contacts S-CR-IB 15d) and B-CR-I'l (Fig. 15e) and also allows contacts B-CR--II (Fig. 15b) to open.
  • the opening of contacts S-CRf-IU (Fig. 15b) breaks down the previously established setup of the cycle controller by causing deenergization of the relay coil N and all of the Y magnets.
  • the closure oi.' relay contacts 5-CR-l to IB (Fig.
  • relay coil 2E becomes energized (Fig. 15a).
  • the irst card has been advanced into the punching section of the machine and will have closed card lever contacts 9

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
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  • Preliminary Treatment Of Fibers (AREA)
  • Conveying Record Carriers (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
US662687A 1933-03-25 1933-03-25 Multiplying device Expired - Lifetime US2113229A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US662687A US2113229A (en) 1933-03-25 1933-03-25 Multiplying device
GB32337/33A GB428794A (en) 1933-03-25 1933-11-20 Improvements in or relating to record-card-controlled multiplying machines
DE1934I0049303 DE688520C (de) 1933-03-25 1934-03-20 Durch Zaehlkarten gesteuerte Rechenmaschine mit Multiplikationsrechenwerk
FR784793D FR784793A (fr) 1933-03-25 1934-03-24 Perfectionnements aux machines comptables multiplicatrices commandées par des cartes perforées

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US662687A US2113229A (en) 1933-03-25 1933-03-25 Multiplying device

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US2113229A true US2113229A (en) 1938-04-05

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DE (1) DE688520C (fr)
FR (1) FR784793A (fr)
GB (1) GB428794A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424091A (en) * 1944-12-09 1947-07-15 Ibm Record controlled dividing machine
US2528453A (en) * 1947-05-29 1950-10-31 Ibm Record controlled multiplying machine
US2581870A (en) * 1946-04-29 1952-01-08 Duba Ab Total transfer mechanism
US2894683A (en) * 1959-07-14 Upper readout

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011193B (de) * 1936-05-06 1957-06-27 Ibm Deutschland Wertvergleichseinrichtung in durch Zaehlkarten gesteuerten Maschinen mit einer Einrichtung zur Abfuehlung von Zaehlpunktstellen der Karten und von in der Maschine eingestellten Zahlengroessen in zeitlicher Folge
DE1115813B (de) * 1957-12-03 1961-10-26 Ramstetter Otto Elektro Programmschaltanordnung
US3002689A (en) * 1958-03-31 1961-10-03 Burroughs Corp Multiplier accounting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894683A (en) * 1959-07-14 Upper readout
US2424091A (en) * 1944-12-09 1947-07-15 Ibm Record controlled dividing machine
US2581870A (en) * 1946-04-29 1952-01-08 Duba Ab Total transfer mechanism
US2528453A (en) * 1947-05-29 1950-10-31 Ibm Record controlled multiplying machine

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Publication number Publication date
GB428794A (en) 1935-05-20
DE688520C (de) 1940-02-23
FR784793A (fr) 1935-07-24

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