US2918123A - Punched card machines - Google Patents

Punched card machines Download PDF

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Publication number
US2918123A
US2918123A US457459A US45745954A US2918123A US 2918123 A US2918123 A US 2918123A US 457459 A US457459 A US 457459A US 45745954 A US45745954 A US 45745954A US 2918123 A US2918123 A US 2918123A
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US
United States
Prior art keywords
punching
card
elements
sensing
punched
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US457459A
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English (en)
Inventor
Balde Ulysse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mithra A G
MITHRA AG
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Mithra A G
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Publication date
Priority claimed from GB32446/52A external-priority patent/GB743996A/en
Application filed by Mithra A G filed Critical Mithra A G
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Publication of US2918123A publication Critical patent/US2918123A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/02—Methods or arrangements for marking the record carrier in digital fashion by punching
    • G06K1/05—High-speed punches, e.g. controlled by electric computer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/04—Perforating by punching, e.g. with relatively-reciprocating punch and bed with selectively-operable punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0087—Details, accessories or auxiliary or special operations not otherwise provided for for use on a desktop

Definitions

  • PUNCHED CARD MACHINES Filed Sept. 21, 1954 3 Sheets-Sheet 3 Jig PUNCHED CARD MACHINES Ulysse Bald, Zurich, Switzerland, assignor to Mithra A.G., Zurich, Switzerland Punched card machines are known which sense the punched cards during their movement, and others which carry out the sensing when the cards are stationary. With both types of punched card machines there are constructions with which also the punching of the cards is possible, by way of example on the basis of data already fixed on the cards in the form of punched holes. During the punching operation the cards are always stationary.
  • the present invention has as its main object the elimination of the deficiencies described and relates to a punched cards machine for sensing the punched cards while they are stationary and for punching the cards.
  • the machine according to the invention is characterized in that the elements for sensing and the elements for punching are designed and arranged in such a manner that these two operations can be carried out without any intervening displacement of the respective cards.
  • each of the locking pawls locking the punches has a locking face cooperating directly with a head at the rear end of the associated punch; that all punches are constructed alike, and that the locking pawls of those punches which are arranged side by side in a row have different lengths and are connected to the electromagnets by rodshaped links, all of which run in a plane parallel to the said row at least approximately at right angles to the longitudinal direction of the punches.
  • the locking pawls are pivotally mounted two armed levers, and the ratio of the distances from the pivot axis to the articulation point of the associated link, and from the pivot axis to the locking face are equal for all locking pawls.
  • Fig. 1 is a cross-section through an embodiment of a punched card machine for sensing and punching the cards
  • Fig. 2 is a part of Fig. 1 to an enlarged scale and partly in section during the sensing operation of a card
  • Fig. 4 shows a cross section through part of another embodiment of a punched card machine for sensing and punching the cards.
  • the punched holes are arranged in horizontal rows and in vertical columns, there being, by way of example, twelve rows and forty columns, although the number of each may be smaller or larger as desired.
  • the machine shown is designed for twelve lines, and in Fig. l the elements for sensing and punching one column are shown. Twelve punches 20 for punching the holes are guided for axial displacement in the vertical direction by the perforated bars 21. The rear and top end of these punches is provided with an enlarged portion 22 which limits the downward movement of the punch b-y abutment against the upper perforated bar 21. All the punches 20 are axially and concentrically bored through and a pin 23 serving for the sensing operation passes through each of them.
  • the pins 23 are mounted on an assembly plate 26 for axial displacement by means of the guide members 24 and 25. At its top end each pin 23 carries a pressed-on cylindrical member 27 (Fig. 2) which limits the downward movement of the pin by abutment against one of the guide members 24. According to Fig. 1 the pins 23 are of various, stepped length so that the top ends of the pins are at different levels, whereas in their position of rest the bottom ends of said pins are all at the same level.
  • a ball 28 is fitted in a recess in each cylindrical member 27. Twelve doublearmed levers 29 are mounted on the assembly plate 26 for rocking about the pivot 30. One of the lever arms of the levers 29, the one directed towards the right in Figs.
  • Each of the contact springs 34, 35, 37 and 38 is connected to an associated terminal strip 41 through an electric conductor not shown, said strips being fixed to the assembly plate 26 by means of an insulating bar 42.
  • the pins 23 are each surrounded by two tubes 43 and 44 screwed into each other in such a manner that said pins can slide in said tubes.
  • the tubes 43 and 44 are mounted for axial displacement in the guide members 25 already mentioned.
  • the lower tubes 44 are each provided with an enlarged portion 45 which can rest on one of said guide members 25.
  • the top tubes 43 are' each surrounded by a coil compression spring 46 which bears against the enlarged portion 45 at one end and against the top guide member 25 at the other end and thus tends-to pushthetubes 43 and 44 joined to each other downwardly.”
  • the tubes 43 are of various, stepped lengths so that their topends are at different levels. At their top end the tubes 43 are each provided with a pressed-on sleeve 47. 7 By means of the pins 48 twelve pawls 49 are pivotally mounted on the plate 26, said pawls being capable ofv having their downwardlydirected portion swung towards the sleeves 47 in order to lock the tubes 43 and 44 and thus too the punches 20 against upward movement. In Fig. 2 it can be seen clearly that this locking takes place in a shape-conformity manner, when the pawls ,arein their operative position, i.e. no force need be, applied to the pawls in order to prevent upward movement of the parts 43, 44 and 20.
  • each pawl 49 extending upwarly is coupled to the armature 51 of an electro-magnet 52 by means of a link 50.
  • the links 50 are arranged at least approximately horizontal and are thus at right angles to the longitudinal axes of the punches 20 and the pins 23.
  • the electro-magnets 52 are arranged laterally to the pins and punches, namely, according to Fig. 1, six on one side and six on the other side, where they are secured to the plate 26.
  • the longitudinal direction of the magnets 52 is parallel to the longitudinal'axes of the punches and the pins.
  • each magnet 52 is mounted pivotally and is under the coercion of a tension spring 53 which tends to swing the armature away from the coil of the magnet and thus to move the pawl 49 into the non-operative position.
  • the coil of each magnet is connected to two terminal strips 41 by electric conductors not shown in the drawing.
  • a perforated plate 61 which can be raised parallel by means known and not shown in the drawing for the purpose of bringing an inserted card into contact with the pins 23 and the punches 20 respectively. In doing so the punches and pinscan plunge into the perforations of plate 61.
  • a card A (Fig.2) to'be sensed is laid von the plate 61, whereupon said plate is raised. Thereby the punched card A is moved from the position shown by a dash dotline in Figs. 2 and 3 into the position represented by full lines.
  • the bottom ends of the pins 23 pass through the holes already provided in the card, as is shown for a single hole in Fig. 2.
  • the rest of the pins are pushed upwardly by the card. In the positionof rest the pins project out of the punches 20 at have to move through, until the bottom ends of the pins and of the punches are flush, is sufficient to actuate the contacts 34/35 and 37/38 respectively. Whilst according to Fig. 2 the left-hand pin remains inoperative, the other two are moved and thereby the contacts coupled to them are opened.
  • the output of the calculating machine will energize one or more magnets 52 through not shown electric conductors, and these magnets will cause the punched card to be perforated in a row, that until then has no perforations, so that the new holes in this row will represent the product of the said two numbers.
  • the second magnet 52 from the left is energized, the pawl 49 coupled to its armature 51 swings into the path of motion of the sleeve 47, as is shown in Fig. 2. If the card A is raised still further intothe position shown in Fig. 3, the second punch 20 from the left cannot take part in this movement as it is prevented from doing so by the associated pawl 49. It therefore punches a new hole into the card A.
  • the third punch can take part in the movement of the card without hindrance and therefore produces no hole.
  • the corresponding pin 23 returns into its position of rest and thereby closes the associated electric contact and contacts respectively.
  • the machine re-senses the card immediately after a punching operation which fact can be utilized or not for verifying the punching with the aid of the calculating machine.
  • the cards need not be moved, but remain in the same place.
  • the operations of sensing and punching can be repeated as often as desired which allows new possibilities of evaluation and application of the punched cards;
  • sensing and punching takes place practically simultaneously, considerable saving of time also results.
  • the machine can also be adapted in such a manner that the sensing and punching oper-' ations take place consecutively, the cards, however, remaining always at the same place.
  • the holes of the punched cards are, as well known, usually arranged in horizontal rows and in vertical columns, the number of rows amounting for example to twelve, and the number of the columns for example to forty, which numbers can however be smaller or larger, as desired.
  • the machine illustrated is constructed for twelve rows, and in the drawing the elements for the sensing and those for the punching of a single column are represented. Twelve punches 120 for the producing of holes are guided in the vertical direction axially shiftable in perforated plates 121..
  • the rear and upper end'of each punch 120 has an enlarged head 122 which limits the downward movement of the punch by abutting on the upper perforated plate 121.
  • All of the punches 120 are axially bored, and each is penetrated by a needle 123 serving for the sensing operation.
  • the upper ends of the needles 123 are. guidedin a guide ledge 124 which is fixed to an assembly plate 126.
  • the needles 123 are each provided with a head 127, which limits the downward movement'of the needle by abutting on the guide ledge 124.
  • All thepunches 120 and the heads thereof," 122 are constructed alike, likewise all needles bottomto such an extent that the path of the. l23'and the heads thereof, 127.
  • each locking pawl 131 has at its lower end a locking face 134, which can cooperate with a shoulder 135 of the head 122 of the associated punch 120. All the locking pawls 131 which are associated with the punches 120 are arranged side by side in a row, i.e.
  • rod-shaped links 140 are connected to the locking pawls 131 which links run at least approximately at right angles to the longitudinal direction of the punches 121) and of the needles 123, and depart from the locking pawls in that direction in which the smaller locking pawls are situated. All these links 140 are associated with the punches arranged in one row, run in a plane which is parallel to the last mentioned row, and accordingly parallel to the assembly plate 126.
  • each armature 144 has an elongated coil 14-2 and an armature 144 arranged laterally thereof and pivoted about a pin 143.
  • the longitudinal direction of the magnets runs parallel to that of the punches 120 and needles 123.
  • the moveable end of each armature 144 is articulated by a joint pin 145 to one of the links 140.
  • a nose 146 is arranged which projects rearwardly beyond the pin 143 and on which engages a tension spring 147, which on the other hand is anchored on the assembly plate 126 by means of a pin 14-8.
  • the spring 147 has the tendency of tilting the armature 144 away from the coil 142, whereby the associated locking pawl 131 is rocked into an inoperative position, in which it does not lock the associated punch 120.
  • an assembly plate 126 with the elements 123148 is provided, as well as a row of punches 120.
  • the perforated guide plates 121 may be in common to all punches.
  • a horizontal plate 150 which is provided with holes 151 into which the punches 1211 and needles 123 can engage.
  • This plate is, in a conventional manner, capable of being raised by means of a machine component 152 while remaining parallel to itself (translation movement) in order to bring a card placed on it in contact with the needles 123 or punches 1211, respectively.
  • two mutually cooperating rollers the frame 155, transverse bars 156 are inserted, which cooperate with the shoulders of the heads 122, in order to lower the latter, together with the punches 1211, into the position illustrated, when they have been pushed upwardly by a card.
  • a device 162 is supported, from the bottom of which as many longitudinally shiftable pins 163 project, as in toto there are needles 123.
  • Each of the pins 163 cooperates with one of the heads 127, and is under the action of a spring 164, which abuts on the one hand on a collar 165 of the pin, and on the other hand against a guide plate 166.
  • the spring 164 has the tendency of pushing the pin 163, and thereby the needle 123, in a downward direction, as far as the collar 165 and the head 127 permit.
  • the upper end of the pins 163 carries a cone 167 consisting of insulating material, by the aid of which two associated contact springs 168 can be spread apart upon an upward movement of the pin 163.
  • These contact springs 168 are attached in a component 169 consisting of insulating material, and have contact elements 170 which are in contact with one another in the restposition of the springs.
  • the elements 167, 168 and 170 form between themselves an electric switch, which can be opened by means of the associated needle 123 for the purpose of interrupting an electric circuit. For each needle 123 such a switch is provided.
  • a punched card to be sensed is pushed on to the plate 151) from the right hand side in Fig. 4, the correct position of the card in relation to the punches and needles 123 being secured by abutments not shown. Thereafter the plate 150 together with the punched card is moved upward until the latter bears against the lower guide plate 121. The lower ends of the needles 123 then enter already into the holes present in the card, and remain accordingly unaffected. The other needles, however, are pushed upward by the card, whereby the corresponding contacts 170 are opened.
  • the pawl 31 coupled to the armature 144 thereof is rocked into the locking position illustrated in the drawing, the locking face 134 of the pawl coming into engagement with the shoulder of the head 132 of the punch concerned.
  • the second punch 120 from the right in the drawing is accordingly locked against an upward movement, and penetrates into the card upon an upward movement of the latter, whereby a hole is punched out.
  • the needle 123 concerned returns to its rest position, the associated contact 170 being closed thereby.
  • the machine is accordingly capable of sensing the card again immediately after having punched the same, which fact can be used for checking the perforation.
  • the plate together with the card is lowered, the needles 123 and the punches 1211 emerging then from the holes of the card.
  • the punches 120 are restored to their starting position, and by the aid of the springs 164 likewise the needles 123.
  • the contact device 162 is exchangeableand can be replaced when necessary by-another in which the switches are for example openin their rest position, and are closed by the upward movement of the needles only.
  • the device 162 could alternatively be so constructed that by the upward movement of the needles 123 at any time a beam of light is interrupted or deflected, which otherwise falls on to an associated photoelectric converter.
  • the advantage of the embodiment described hereinabove with reference to Fig. 4 of the punched card 'machine consists in that the locking pawls 131 cooperate directly with the heads 122, of the punches, whereby a lower structural height of the machine is made possible 'as compared with the 'case where between the heads of the punches and the locking pawls transmission members of different length are interposed, in order that the pawls can all be made of equal length, such as shown in the embodiment according to Figs. 1 to 3.
  • a punched card machine comprising card supporting means, punching elements, each punching element having an associated sensing element depending below the punching element, the sensing elements and the punching elements being disposed in such a manner with respect fto the supporting means that the whole card can be ⁇ sensed in one sensing operation and that the whole card can be punched in a subsequent punching operation while said elements are moved upwardly by the card, the card being held in'a fixed position on the card supporting means during the sensing and punching operations, said sensing and punching elements being disposed -coaxially and axially movable relative to one another, locking pawls adapted tolock said punching elements against upward movement and not to interfere with said punching elements in the other position when in their operative position, each locking pawl having a locking surface, an abutting head being provided at the upper end of each of said punching elements to cooperate each with one "of said locking surfaces, all of said punching elements being of identical construction and being arranged in rows and columns, said locking pawls
  • a punched card machine comprising card supporting ineans, punchingelements and sensing elements, each 'punchingelement having a sensing element associated therewith and depending below the punching element,
  • said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element, in combination with electromagnets mounted on the stationary structure of the machine, armatures associated with said electromagnets and mechanically coupled to said locking elements, and electric contacts electrically connected into the circuits of said electromagnets and mechanically operated by said sensing elements.
  • a punched card machine comprising card supporting means, punching elements and sensing elements, each punching element having a sensing element associated therewith and depending below the punching element,
  • said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elementsbeing so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element, in combination with electromagnets mounted on the stationary structure of the machine, armatures associated with said electromagnets and mechanically coupled to said locking elements, and electric contacts electrically connected into the circuits of said electromagnets and mechanically operated by said sensing elements, said sensing elements in their rest positions projecting beyond the ends of the respective punching elements to an extent sufiicient for said sensing elements to actuate said electric contacts when the ends of said sensing elements and said punching
  • a punched card machine comprising card supporting means, punching elements and sensing elements, each punching element having a sensing element associated therewith and depending below the punching element, said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element, in combination with electromagnets mounted on the stationary structure of the machine, armatures associated with said electromagnets and mechanically coupled to said locking elements, electric contacts electrically connected into the circuits of said electromagnets and mechanically operated by said sensing elements, and links connecting said armatures to said locking elements,
  • a punched card machine comprising card supporting means, punching elements and sensing elements, each punching element having a sensing element associated therewith and depending below the punching element, said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element, in combination with electromagnets mounted on the stationary structure of the machine and disposed at a side to said punching elements and said sensing elements, armatures associated with said electromagnets and mechanically coupled to said locking elements, electric contacts electrically connected into the circuits of said electromagnets and mechanically operated by
  • a punched card machine comprising card supporting means, punching elements and sensing elements, each punching element having a sensing element associated therewith and depending below the punching element, said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element, in combination with electromagnets mounted on the stationary structure of the machine with their longitudinal direction parallel to the axial direction of said punching elements and said sensing elements, armatures associated with said electromagnets and mechanically coupled to said locking elements, and electric contacts electrically connected into the circuits of said eletromagne
  • a punched card machine comprising card supporting means, punching elements and sensing elements, each punching element having a sensing element associated therewith and depending below the punching element,
  • said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to produce one single unidirectional displacement of said card supporting means toward said sensing and punching elements thereby to produce a sensing and a punching operation and another sensing operation subsequently during said single displacement, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, and a movable locking element associated with each punching element which in one position will lock the punching element against upward movement and in the other positions will not interfere with the upward movement of the punching element.
  • a punched card machine comprising card supportting means mounted movably on the machine structure, punching elements and sensing elements guided in the machine structure, each punching element having a sensing element associated therewith and depending below the punching element, said punching elements being bored through axially and said sensing elements extending through the axial bores in said punching elements, one punching element and one associated sensing element being provided for and facing each hole position on the card, means to produce one single unidirectional displacement of said card supporting means toward said sensing and punching elements thereby to produce a sensing and a punching operation and another sensing operation subsequently during said single displacement, means to hold the card in a fixed position on said card supporting means during the sensing and the punching operations, said punching and sensing elements being so mounted that they can be moved upwardly by the card, stops on the machine structure and stops on said punching and said sensing elements, said stops on the structure and on said elements limiting the axial movement of said elements, springs biasing said elements toward said stops on the machine structure, and a mov

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US457459A 1952-12-22 1954-09-21 Punched card machines Expired - Lifetime US2918123A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB32446/52A GB743996A (en) 1952-12-22 1952-12-22 Improvements in or relating to punched card machines
CH321756T 1954-04-28

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US2918123A true US2918123A (en) 1959-12-22

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BE (3) BE533558A (en(2012))
CH (2) CH302323A (en(2012))
FR (2) FR66823E (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064560A (en) * 1959-09-08 1962-11-20 Sperry Rand Corp Printing recorder and punching converter
US3106339A (en) * 1961-12-27 1963-10-08 Sperry Rand Corp Electromagnetic set-up device for a selective perforator
US3137441A (en) * 1961-12-26 1964-06-16 Ibm Punching device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134542B (de) * 1960-03-22 1962-08-09 Siemens Ag Einrichtung zur Lochung und Abtastung von Lochstreifen
DE1242020B (de) * 1962-08-09 1967-06-08 Olympia Werke Ag Einrichtung zum Lochen von Aufzeichnungstraegern mittels Funkenentladung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US782500A (en) * 1903-07-09 1905-02-14 Curt Handwerck Lashing device for card-punching machines.
US1170078A (en) * 1915-10-22 1916-02-01 Harry Lea Pattern duplicating and reversing machine.
US1732982A (en) * 1929-10-22 Jacquard card-punching machine
US1788694A (en) * 1927-02-04 1931-01-13 Accounting & Tabulating Corp Punching machine
US1879529A (en) * 1930-11-10 1932-09-27 Tabulating Machine Co Perforated card controlled machine
US2307617A (en) * 1941-04-29 1943-01-05 Remington Rand Inc Statistical cards and means for and method of preparing them
US2625225A (en) * 1950-01-31 1953-01-13 Burroughs Adding Machine Co Card punch and verifier
US2647580A (en) * 1948-05-13 1953-08-04 Ibm Machine for punching records

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732982A (en) * 1929-10-22 Jacquard card-punching machine
US782500A (en) * 1903-07-09 1905-02-14 Curt Handwerck Lashing device for card-punching machines.
US1170078A (en) * 1915-10-22 1916-02-01 Harry Lea Pattern duplicating and reversing machine.
US1788694A (en) * 1927-02-04 1931-01-13 Accounting & Tabulating Corp Punching machine
US1879529A (en) * 1930-11-10 1932-09-27 Tabulating Machine Co Perforated card controlled machine
US2307617A (en) * 1941-04-29 1943-01-05 Remington Rand Inc Statistical cards and means for and method of preparing them
US2647580A (en) * 1948-05-13 1953-08-04 Ibm Machine for punching records
US2625225A (en) * 1950-01-31 1953-01-13 Burroughs Adding Machine Co Card punch and verifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064560A (en) * 1959-09-08 1962-11-20 Sperry Rand Corp Printing recorder and punching converter
US3137441A (en) * 1961-12-26 1964-06-16 Ibm Punching device
US3106339A (en) * 1961-12-27 1963-10-08 Sperry Rand Corp Electromagnetic set-up device for a selective perforator

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BE524212A (en(2012))
CH302323A (de) 1954-10-15
BE531546A (en(2012))
CH321756A (de) 1957-05-15
FR66823E (fr) 1957-09-10
BE533558A (en(2012))
FR1107862A (fr) 1956-01-05

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