US2421069A - Punch - Google Patents

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US2421069A
US2421069A US608534A US60853445A US2421069A US 2421069 A US2421069 A US 2421069A US 608534 A US608534 A US 608534A US 60853445 A US60853445 A US 60853445A US 2421069 A US2421069 A US 2421069A
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card
punches
carriage
punch
zone
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US608534A
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Walter F Kelley
Edwin O Roggenstein
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Remington Rand Inc
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Remington Rand Inc
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Priority to US608534A priority Critical patent/US2421069A/en
Priority to FR941712D priority patent/FR941712A/en
Priority to GB23024/46A priority patent/GB617358A/en
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Publication of US2421069A publication Critical patent/US2421069A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/02Methods or arrangements for marking the record carrier in digital fashion by punching

Definitions

  • This invention relates generally to, machines used in perforating cards for use in statistical machines, and more particularly to an electromechanically operated punch mechanism adapted to perforate a card in accordance with a predetermined code, the invention being more specifically applied to portable machines which perforate a carriage propelled card in a column by column manner.
  • the Powers card which is produced in twowidely used forms, namely, the forty-five column card. and the ninety column card.
  • each column contains twelve index positions, thereby permitting each of the ten digits to be indicated by a single perforation, and the alphabet letters by a combination of one or more perforations in a column.
  • the ninety column Powers card is divided horizontally into two zones, an upper and lower zone, each zone containing forty-five columns of six index positions each, thereby requiring each of the ten digits and the alphabet letters to be indicated in each card column by one or more perforations therein, in accordance with a pre-determined code.
  • the present invention may be embodied in a machine provided with the usual base with a card carriage and keyboard mounted thereon.
  • the present machine is provided with two separate and independently driven rows of punches, or, accordingly a separate row operable in each separate zone of the card.
  • the two rows of punches are set in separate punch supporting blocks extending over the path of the card carriage, near opposite ends of the key actuated mechanism, and both rows are simultaneously conditioned upon depression of the same digit key.
  • the linear distance between said separate punch supporting blocks is such that, as a.
  • the card is drawn by the card carriage from right to left below both rows of punches, the first column of the lower zone is in position for perforation by punches in one of said rows of punches upon completion of the punching of the last column of the upper zone by the other of said rows of punches.
  • Spacing mechanism is provided for advancing the card column by column through the respective punching chambers, with means responsive to the relative position of the card in the machine for disabling that row of punches operable on that zone of the card in which a perforation of the card in such position is not desired.
  • a key actuated carriage release mechanism is provided for disabling the carriage escapement mechanism so as to permit return of the carriage to its extreme left hand position wherein the card may be either inserted or withdrawn from the machine.
  • the present machine is provided with a card carriage capable of being positioned by the escapement mechanism in a number of positions equal to the total number of columns in a, plural zoned card, in the present disclosure the carriage mechanism being of a ninety column capacity. Accordingly, such carriage mechanism, in cooperation With the unique arrangement of the plural rows of punches, permits a complete punching of all columns of a. plural zoned card within one continuous and uninterrupted series of punching operations, and the additional operation, previously required, of returning the carriage to normal starting position upon completion of punching in one zone, is thereby eliminated. The entire card may be punched within one operational cycle of the card carriage, upon completion of which the card is in position for removal from the machine.
  • FIG. 1 is a view of the machine in isometric perspective
  • Fig. 2 is a detail front view partly in section, showing the carriage release key and associated mechanism
  • Fig. 3 is a detail front view partly in section showing the carriage space key and associated esoapement mechanism
  • Fig. 4 is a plan view of the key actuated punch gag mechanism taken along line 4--4 of Fig. 6;
  • Fig. 5 is another plan view of the key actuated punch gag mechanism along line 5-5 of Fig. 6;
  • Fig. 6 is a longitudinal cross section through the machine
  • Fig. '7 is a cross section taken along line 1-1 of Fig. 5;
  • Fig. 8 is a cross section taken along line 8-8 of Fig. 5;
  • Fig. 9 is a fragmentary view in isometric perspective showing a digit key and associated mechanism
  • Fig. 10 is a fragmentary plan view of the carriage esoapement rack and transfer switch control
  • Fig. 11 is a wiring diagram of the machine operating circuit
  • Fig. 12 is a. detail side view partly in cross section of the key actuated contact switch.
  • the machine embodying the present invention is similar in construction and operation to that disclosed in the patent to E. 0. Roggenstein,
  • the mechanism is mounted on a base l5, which is over double the length of the usual statistical punch card.
  • the base is formed with a shallow recess l6 which extends the full length. of the base, and is the same width as a statistical card I1, thus forming a guide therefor.
  • the base i5 is further provided with a o e l8 tending its entire length in which is mounted a carriage rail 19 on which is mounted for longitudinal travel a carriage escapement rack 2
  • is provided near each end thereof with 'double flange rollers 22, as best seen in Fig, 10, which rollers ride on said carriage rail, and are held against vertical displacement therefrom by the overhanging arm of a guide bar 23 amxed to base l5.
  • is an arm 24 projecting at right angles thereto carrying a concavely curved finger piece 25 and a horizontally projecting tongue 26, the bottom surface of which tongue rides on the floor of recess 16 in base IS.
  • the forward free end of said tongue is notched to engage therein the edge of a card l1 and thus prevent longitudinal or vertical displacement of the card in relation thereto.
  • a similar arm 21 (Fig.
  • the card carriage may be spaced, either in conjunction with the operation of any digit key, as will be hereinafter described, or by depression of the space key 30, the stem 3
  • the other arm of bell-crank 32 is pivotally connected at 35 to one end of a link 36 pivoted at its opposite end at 39 to a lever 40 secured to a rock shaft 4
  • is suitably journaled in arms 38 formed on a punch supporting block hereinafter described, and has also secured thereto a pair of rock arms 42 one of which extends below its pivot point and carries a lug 43 projecting beneath an esoapement bail 44 which is pivoted through its bent ends to brackets 45 affixed to base i5.
  • a pin 46 on the esoapement bail 44 extends through holes cut in an esoapement pawl 48 and an arm of a bellcrank 41 jointly pivoted to a bracket mounted on base i5.
  • Also pivoted on bracket 50 is a holding pawl 5
  • the esoapement pawl is normally pulled into engagement with a tooth of the carriage esoapement rack 2
  • ) results in the counter-clockwise rocking of bell crank 32 moving link 36 to the left against tension of spring 31 to rock shaft 4
  • the rocking of ball 44 raises pin 45 which disengages the esoapement pawl from the rack, and at the same time rocks the bell-crank 41, the other arm of which is bent and provided with a pin 49 engaging a slot in the holding pawl 5
  • the card carriage may be released for return to its extreme left hand position by manual depression of the release key 53, the stem 58 of which is pivoted, as shown in Fig. 2, to one arm of bell-crank 58 mounted on a bracket 55 secured to the base I5,
  • the other arm of bellcrank 58 is connected to one end of a link 59, the other end of which is pivoted to an arm of a bell-crank 60 mounted .on a bracket 56, likewise secured to base I5.
  • the free arm of bellcrank 60 projects beneath a lug 6
  • the ten digit keys 63, Release key 53, and Space key 30 are arranged in three rows as shown in Figs. 1, 6, and 7.
  • Each digit key comprises the button 53 mounted on a rectangular stem 62 extending through rectangular perforations in each of two guide plates 64, securely mounted on two frame plates 55, 66, and which are in turn secured to base I5 to form a supporting structure suitably enclosed by a cover plate 61.
  • the key stem for each of the center row of keys extends vertically downward through said guide plates to rest on a stud 69 on one arm of a bell-crank 58, while the key stem of each of the outer row keys is cut off below the lower guide plate and carries, instead, an inwardly projecting arm I0, bent downward through a perforation in lower guide plate 68 to similarly rest on a stud on the supporting arm of its corresponding bell-crank 68.
  • Said bell-cranks are loosely mounted on a fixed cross shaft II suitably supported by the two frame plates 65 and 66, and are normally urged counter-clockwise by action of a spring I2,
  • Each of said bell-cranks 68 is formed with a horizontal arm projecting to the right directly above a row of steel balls I3 in a slotted housing extending between the said two side frame plates in such a manner as to constitute a ball lock mechanism,
  • each bell-crank 68 has pivoted thereto at I5 a link I6 having a slot 11 to engage a pin I8 on a lever "I9 which is secured by a collar to a rock shaft suitably journaled in the two side frame plates 65 and 66.
  • a collar to each rock shaft 80 are two or more fingers 83 extending downwardly to engage studs 82 on individual punch conditioning slides 8
  • the rearmost six punches 88 positioned over the six index positions of the card's upper zone, are dummy punches with the cutting edge eliminated, their purpose being to support the six rearmost punch conditioning slides BI, and their incidental depression during actuation of the punches 88 is ineffective to cause a card perforation. All of said punches 88 are normally urged -upward by compression springs 94 resting on guide block 93 and pressing against the punch heads thereby allowing free passage of a punched card therebelow.
  • Punch dies 95 are secured in the base I5 in any well known manner, A hammer bail 96 is pivoted to shoulders on the block 88 and is rocked by a hammer bail arm 97 pivotally connected thereto and extending downward through an opening in base I5, where it is pivoted to a bell-crank I02 mounted on the under side of the base. Said bell-crank is connected by link I00 to an armature IOI cooperating with electromagnet I03, both armature and magnet being suitably secured to the underside of the base. The energization of the magnet rocks its armature I III counter-clockwise (Fig.
  • the construction and operation of the upper zone punch mechanism is similar to that of the lower zone just described, except that the six efiective punches are the rearmost six in the row of punches I09, being aligned with the six column positions in the upper zone of a card, while the front most six are the dummy or inefi'ective punches in said row. Accordingly,
  • the card carriage is automatically spaced, upon the actuation of any punch, by means of spacing bails H6 or II! which underlie the punch conditioning slides of each end thereof.
  • Spacing bail IIB (Figs. 3, 7, and 8) is carried by arms 42 integral therewith secured to the rock shaft M as heretofore described, and, spacing bail I I1 is carried by a pair of arms I I8 secured to a rock shaft H9 journaled to arms I20 formed on the punch supporting block 81.
  • the rearmost arm III! of bail II'I extends downward and carries a lug I2I (Fig. 3) projecting directly beneath the escapement bail 44.
  • rock shafts 80 (Figs. 5 and 8) in a machine of this type provides a simple and expedient means for conditioning a. plurality of punches as is required in code punching, by the depression of only one digit key.
  • the punch code used in the present disclosure is one in which the zero and all odd digits are consecutively represented by a perforation in a single index position, and the even digits are represented by perforations in the next lower odd digit index position in combination with the "nine digit index position.
  • rock shafts 80 linked to the zero and odd digit keys each carry two fingers 83 for shifting one punch conditioning slide 8I efiective on punches operable in each of the two card zones
  • those rock shafts linked to the even digit keys each carry four fingers 83 for shifting two punch conditioning slides in accordance with the code to effective position over punches operable in each of the two card zones.
  • Fig. 9 is a fragmentary view showing mechanism actuated by the six digit key wherein it can be seen that the rock shaft 80 carries four fingers 83 for shift. ing four punch conditioning slides 8
  • any code combination can be obtained by grouping the fingers 83 on the cross shafts 80 in such a manner that the rocking of any shaft 80 by an individual key will result in the positioning of one or more punch slides 13! in accordance with the desired code.
  • a link I34, formed as shown and pivoted to the contact pawl I21 has a slot near its lower end through which passes a tie link I35 pivoted to hammer bail arms 91 and I05. Depression of a digit key rocks the contact bail I25 clockwise, raising contact pawl I21. closing contacts I29, I28 to complete an electrical circuit (Fig. 11) through a transfer switch hereinafter described, to either magnet I03 or I06. Upon energization of either magnet its associated hammer bail arm 91 or I05 is pulled downward to rockits corresponding hammer bail, at the same time lowering tie link I35 to a point Where it engages the lower edge of the slot in link I34, thereby rocking contact pawl I21 clockwise.
  • the transfer switch comprises two contacts I31 and I38 having a common contact I40 mounted on a center spring I39.
  • One or the other of contacts I37 and I38 is always closed, and they are controlled by a contact slide I4I abutting the common center spring and extending through a slot in the base I5.
  • a roller I42 mounted on the slide engages the side surface of the carriage escapement rack 2I. As best seen in Fig.
  • the side of the carriage escapement rack is formed with a cam I43 extending over a portion of its surface, which cam, in cooperating with roller [02, acts to shift the contact slide rearward away from the carriage escapement rack, thereby breaking contact l3! and making the contact I38.
  • Electromagnets I03 and I00 are wired to the alternate contacts of the transfer switch as shown in the wiring diagram Fig. 11.
  • Suitable means for conducting a source of electrical energy to the circuit herein disclosed may comprise any such means known and familiar to the art.
  • such means comprises a dry disk rectifier in a combination circuit permitting use of either an A. C. or D. C. potential in the manner disclosed and fully described in the aforesaid Patent 2,l5l,232,'issued to Roggenstein March 21, 1939.
  • a machine for perforating a plural zoned statistical card means for spacing said card in successive positions corresponding to successive columns of said card, and key controlled perforating means separately grouped in successively offset rows aligned with the columnar index positions of each separate zone and successively operable in each of said separate zones of said card.
  • a machine for perforating a statistical card having separate parallel zones of successive data registering columns, means for rectilinearly advancing said card to successive positions to correspond to each successive columns in each separate zone of said card, and key controlled perforating means grouped in separate rows successively offset relative to the rectilinear advance of said card so as to align with successive columns of said card in each successive card position.
  • a machine for perforating a plural zoned statistical card comprising spacing means for advancing said card step by step into punching positions corresponding to the separate columns of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for conditioning related punches in each of said separate groups of punches, and means for operating the punches so conditioned by said key actuated means.
  • a machine for perforating a plural zoned statistical card comprising spacing means for advancing said card into separate positions for each separate column of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for simultaneously conditioning related punches in each of said separate group of punches, and means selectively enabled according to the relative position of said card for operating the con ditioned punches in one of said separate group of punches.
  • a machine for perforating a plural zoned statistical card comprising spacing means for advancing said card into separate positions for each separate column of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for simultaneously conditioning related punches in each of said separate rows of punches, punch operating means for each of said separate groups of punches, and transfer means responsive to the movement of said spacing means for selectively enabling one of said punch operating means.
  • a card carriage for perforating a plural zoned statistical card, a card carriage, escapement means for spacing said carriage in successive positions corresponding to successive columns of the card, and key controlled punches separately grouped in offset rows to successively align with the columnar index positions of each separate zone in predetermined carriage positions.
  • a machine for perforating a plural zoned statistical card the combination with a row of punches aligned to perforate one zone of said card in separate successively spaced positions of the card, operating means for said row of punches, of an additional row of punches aligned to perforate another zone of said card in addi-- tional successively spaced positions of the card, operating means for said additional row of punches, punch conditioning means for simultaneously gagging related punches in each of said rows of punches, and transfer means responsive to the advance of said card through predetermined positions for selectively enabling the corresponding punch operating means.
  • a key operated machine for perforating a statistical card in accordance with a multiple hole code
  • a key operated machine for perforating a plural zoned statistical card in accordance with a multiple hole code the combination with punches separately aligned with the index positions of successively spaced card columns of each separate zone, interponent slides movable into gagging position relative to punches aligned with each of said separate zones, and selectively enabled means for separately operating the gagged punches aligned with each separate zone, of a rock shaft for and actuated by each operating key and common to said slides, and means mounted on each shaft and selectively engaging slides effective in each of said separate zones for simultaneously moving the slides selected in accordance with said code into gagging position relative to the punches aligned with each of said separate zones.
  • a machine for perforating a plural zoned statistical card comprising a base, a card carriage, escapementmeans for successively spacing said carriage relative to said base, a row of punches aligned to perforate separate columns in one zone of said card in one group of carriage positions, an additional row of punches aligned to perforate separate columns in another zone of said card in another group of carriage positions, key actuated punch conditioning means for simultaneously gagging related punches in each of said separate rows of punches, individual punch operating means for each ,of said separate rows of punches, and transfer means responsive to the movement of said carriage for selectively enabling one of said punch operating means depending upon the position of said carriage.
  • a machine for perforating a plural zoned statistical card comprising a base, a card carriage, escapement means for successively spacing said carriage relative to said base, a row of punches aligned to perforate separate columns in one zone of said card in one group of carriage positions, an additional row of punches aligned to perforate separate columns in another zone of said card in an additional group of carriage positions, key actuated punch conditioning means for each group individual to a zone of said card.
  • card carriage for carrying said card step by step past said groups of punches, operating means individual to each group of punches and means controlled by the position of said carriage for selectively enabling said operating means.
  • a punch for perforating a plural zoned statistical card in accordance with a multiple hole code a base, a plurality of groups of punches each aligned to perforate in one zone of said card and positioned apart along said base, a card carriage, escapement means for successively spacing said carriage relative to said groups of punches, an actuating bail for each group of punches, interponents adapted to be shifted to an effective position between said bails and punches, a plurality of cross shafts one for each character to be perforated, shifting members secured to each shaft one of said members for each of said interponents which corresponds in each card zone to an index position of the character associated with each shaft, a key actuated member connected to each of said shafts, said actuating member rocking said shaft to position said interponentsin effective position, and means under control of said carriage for selectively operating one of said bails.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

M y 7, 1947- V w. F; KELLEY EIAL PUNCH Filed Aug. 2, 1945 5 Sheets-Sheet 1 mvzmons W'F. KELLEY A D h .QROGGENSTEIN NOE ATTORNEY w.' F. KELLEY EIAL May 27, 1947.
PUNCH Filed Aug. 2, 1945 5 Sheets-Sheet 2 Fa mvm'roas ATTORNEY W. F. KE LLEY AND E.O. ROGGENSTElN Z n U. 3 n.
n Nw L .3 g |.||l
| I mw N mQ 5 551 g fie N. no mu A. .N Hm 2. Q. G 2... i1- Y n 8 m a O 0N] W May 27, 1947. w. F. K ELLEY EI'AL PUNCH Filed Aug. 2, 1945 5 Sheets-.-Sheet 3 mvcmoas W. F. KELLEY AND E.0. ROGGE NSTEIN ATTORNEY 5 Sheets-Sheet 4 PUNCH Filed Aug. 2, 1945 W. F. KELLEY ETAL May 27, 1947.
mvzfirons v W.F. KELLEY AND E.O.ROGGENSTEIN AnomisY 0:! n v M 0 Q 2. R R 2 2. E 6 2. E.
Patented 2,421,069 rrmcnf Walter F. Kelley, Whitestone, and Edwin 0.
Roggenstcin, Ilion, N. Y., assignors to Remington Rand Inc., Buffalo, N. Y., a corporation of Delaware Application August 2, 1945, Serial No. 608,534
14 Claims. 1
This invention relates generally to, machines used in perforating cards for use in statistical machines, and more particularly to an electromechanically operated punch mechanism adapted to perforate a card in accordance with a predetermined code, the invention being more specifically applied to portable machines which perforate a carriage propelled card in a column by column manner.
As is now well known to the art, one type of statistical card in common use is the Powers card which is produced in twowidely used forms, namely, the forty-five column card. and the ninety column card. In the forty-five column card each column contains twelve index positions, thereby permitting each of the ten digits to be indicated by a single perforation, and the alphabet letters by a combination of one or more perforations in a column. The ninety column Powers card is divided horizontally into two zones, an upper and lower zone, each zone containing forty-five columns of six index positions each, thereby requiring each of the ten digits and the alphabet letters to be indicated in each card column by one or more perforations therein, in accordance with a pre-determined code. In the code commonly known as the ninety column code and used with this type of Powers card, the and all odd digits are consecutively represented by a perforation in single successive index positions from the top of a, column, and all even digits are represented by a multiple perforation comprising perforations in the next lower odd digit -index position in combination with the nine digit index position. This latter type of card, together with the code adapted for use therewith, is disclosed and more fully described in patent to W. W. Lasker 1,780,621, issued November 4, 1930. It is to a machine for punching such type of card that the present invention relates, and in the embodiment herein disclosed the code for indicating numerical data in six position card columns as therein described is herein adopted.
Heretofore, it has been the practice to provide all card perforating machines of the type described with a traveling card carriage and associated escapement mechanism capable of positioning the card in a number of separate positions equal to the number of columns across the entire width of the card. Accordingly, such machines for use with Powers type cards were pro- 'vided with carriages and carriage escapement racks of forty-five column capacity. This practice has been continued in adapting such ma-i chines for use with plural zoned cards, with the result that in all machines so adapted a return of the card carriage has been required between punching of the separate zones of the card, and for this reason necessitating more than'one cycle of carriage operation for a complete punching of one plural zoned or ninety column card. This practice necessarily likewise required provision of means for selectively activating one of two groups of punches in a plurality of punch combinations for each digit in every carriage position, depending upon the card zone in which a perforation was desired.
The present invention may be embodied in a machine provided with the usual base with a card carriage and keyboard mounted thereon. However, instead of the usual single row of twelve reciprocable punches, the present machine is provided with two separate and independently driven rows of punches, or, accordingly a separate row operable in each separate zone of the card. The two rows of punches are set in separate punch supporting blocks extending over the path of the card carriage, near opposite ends of the key actuated mechanism, and both rows are simultaneously conditioned upon depression of the same digit key. The linear distance between said separate punch supporting blocks is such that, as a. card is drawn by the card carriage from right to left below both rows of punches, the first column of the lower zone is in position for perforation by punches in one of said rows of punches upon completion of the punching of the last column of the upper zone by the other of said rows of punches. Spacing mechanism is provided for advancing the card column by column through the respective punching chambers, with means responsive to the relative position of the card in the machine for disabling that row of punches operable on that zone of the card in which a perforation of the card in such position is not desired. A key actuated carriage release mechanism is provided for disabling the carriage escapement mechanism so as to permit return of the carriage to its extreme left hand position wherein the card may be either inserted or withdrawn from the machine.
The present machine is provided with a card carriage capable of being positioned by the escapement mechanism in a number of positions equal to the total number of columns in a, plural zoned card, in the present disclosure the carriage mechanism being of a ninety column capacity. Accordingly, such carriage mechanism, in cooperation With the unique arrangement of the plural rows of punches, permits a complete punching of all columns of a. plural zoned card within one continuous and uninterrupted series of punching operations, and the additional operation, previously required, of returning the carriage to normal starting position upon completion of punching in one zone, is thereby eliminated. The entire card may be punched within one operational cycle of the card carriage, upon completion of which the card is in position for removal from the machine. It follows that such a feature avoids the necessity of providing a machine of this type with means for selectively activating one of a plurality of punch combinations in each card carriage position, and the pos-' sibility of inadvertent operational error in failure to so select correctly resulting in the perforation of the wrong card zone is thereby eliminated.
It is, therefore, the principal object of this invention to improve the construction and design of card punches to permit the perforating of all columns of a plural zone statistical card within one cycle of its carriage operation.
It is a further object of this invention to simplify the art of card punch operation by eliminating the carriage return upon the completion of punching in one zone of a plural zone data card.
It is a further object of this invention to avoid, in card punch operation, the possibility of operational error of causing the machine to perforate in the unintended zone of a plural zone data card.
A clearer concept of the invention, with additional objects and features therein apparent, may be derived from the following description of the drawings, in which Fig. 1 is a view of the machine in isometric perspective;
Fig. 2 is a detail front view partly in section, showing the carriage release key and associated mechanism;
Fig. 3 is a detail front view partly in section showing the carriage space key and associated esoapement mechanism;
Fig. 4 is a plan view of the key actuated punch gag mechanism taken along line 4--4 of Fig. 6;
Fig. 5 is another plan view of the key actuated punch gag mechanism along line 5-5 of Fig. 6;
Fig. 6 is a longitudinal cross section through the machine;
Fig. '7 is a cross section taken along line 1-1 of Fig. 5;
Fig. 8 is a cross section taken along line 8-8 of Fig. 5;
Fig. 9 is a fragmentary view in isometric perspective showing a digit key and associated mechanism;
Fig. 10 is a fragmentary plan view of the carriage esoapement rack and transfer switch control;
Fig. 11 is a wiring diagram of the machine operating circuit; and
Fig. 12 is a. detail side view partly in cross section of the key actuated contact switch.
The machine embodying the present invention is similar in construction and operation to that disclosed in the patent to E. 0. Roggenstein,
2,151,232, issued March 21, 1939. The mechanism is mounted on a base l5, which is over double the length of the usual statistical punch card. The base is formed with a shallow recess l6 which extends the full length. of the base, and is the same width as a statistical card I1, thus forming a guide therefor. The base i5 is further provided with a o e l8 tending its entire length in which is mounted a carriage rail 19 on which is mounted for longitudinal travel a carriage escapement rack 2|. The carriage esoapement rack 2| is provided near each end thereof with 'double flange rollers 22, as best seen in Fig, 10, which rollers ride on said carriage rail, and are held against vertical displacement therefrom by the overhanging arm of a guide bar 23 amxed to base l5. Secured to the left end of carriage escapement rack 2| is an arm 24 projecting at right angles thereto carrying a concavely curved finger piece 25 and a horizontally projecting tongue 26, the bottom surface of which tongue rides on the floor of recess 16 in base IS. The forward free end of said tongue is notched to engage therein the edge of a card l1 and thus prevent longitudinal or vertical displacement of the card in relation thereto. A similar arm 21 (Fig. 4) is secured to the right hand end of the carriage escapement rack 2| and acts as a card stop by similarly engaging the opposite edge of the card, the two arms thereby comprising a carriage for holding the card in fixed relation to the carriage esoapement rack while being drawn thereby beneath the punching mechanism. The card is inserted in the machine when the carriage is in its extreme left hand position, at which time the card carriage is manually urged to its extreme right hand position preparatory to punching. The carriage esoapement rack is then urged to the left, step by step, by a pinion 28 (Fig. 6) driven by a spring 29 and engaging with the rack 2|, upon release of key controlled esoapement mechanism as hereinafter described.
The card carriage may be spaced, either in conjunction with the operation of any digit key, as will be hereinafter described, or by depression of the space key 30, the stem 3| of which, as shown in Fig. 3, is pivoted to one arm of a bell-crank 32 pivotally mounted at 33 to a bracket 34 secured to base |5. The other arm of bell-crank 32 is pivotally connected at 35 to one end of a link 36 pivoted at its opposite end at 39 to a lever 40 secured to a rock shaft 4|. Rock shaft 4| is suitably journaled in arms 38 formed on a punch supporting block hereinafter described, and has also secured thereto a pair of rock arms 42 one of which extends below its pivot point and carries a lug 43 projecting beneath an esoapement bail 44 which is pivoted through its bent ends to brackets 45 affixed to base i5. A pin 46 on the esoapement bail 44 extends through holes cut in an esoapement pawl 48 and an arm of a bellcrank 41 jointly pivoted to a bracket mounted on base i5. Also pivoted on bracket 50 is a holding pawl 5|. The esoapement pawl is normally pulled into engagement with a tooth of the carriage esoapement rack 2| by spring 52. The manual depression of thespaoe key 3|) results in the counter-clockwise rocking of bell crank 32 moving link 36 to the left against tension of spring 31 to rock shaft 4|, thereby rocking escapement bail 44 through lug 43 on the extended rock arm 42. The rocking of ball 44 raises pin 45 which disengages the esoapement pawl from the rack, and at the same time rocks the bell-crank 41, the other arm of which is bent and provided with a pin 49 engaging a slot in the holding pawl 5|. The rocking of bell-crank 41 rocks the holding pawl 5| simultaneously into engagement with another tooth of the carriage esoapement rack. The pivotal connection of esoapement pawl 48 with bracket 50 is of the pin and slot type, so that this pawl, upon disengagement with the carriage escapement rack, is urged by spring 52 to the right a slight distance as limited by said slot, which distance is sufhcient to prevent the return of the pawl 48 to engagement with the same tooth of the rack, Release of the space key allows spring 52 to pull the escapement pawl 48 back into engagement with the next succeeding tooth of the carriage escapement rack, at the same time rocking the holding pawl 5I out of engagement with the rack through the action of pin 46, bellcrank 81, and pin 89. The carriage is thus restrained by the escapement pawl from moving to the left a distance greater than that between two adjacent teeth, which distance is equal to the columnar spacing of a punch card, and in this manner a single column carriage spacing is efiected.
The card carriage may be released for return to its extreme left hand position by manual depression of the release key 53, the stem 58 of which is pivoted, as shown in Fig. 2, to one arm of bell-crank 58 mounted on a bracket 55 secured to the base I5, The other arm of bellcrank 58 is connected to one end of a link 59, the other end of which is pivoted to an arm of a bell-crank 60 mounted .on a bracket 56, likewise secured to base I5. The free arm of bellcrank 60 projects beneath a lug 6| on escapement pawl 08. Depression of the release key rocks bellcranks 58 and 60 clockwise, causing the free arm of said bell-crank 50 to engage the lug 6|, thereby rocking the escapement pawl counter-clockwise to disengage it from the teeth of the carriage escapement rack. The lost motion between the hole in escapement pawl 88 and the escapement bail pin 46 permits the pawl to be rocked out of engagement without the concurrent rocking of bell-crank 81. Due to the bell-crank 41 not being rocked, holding pawl 5| remains inefi'eetive. IAC- cordingly, in this operation both the escapement pawl and holding pawl are simultaneously free from the escapement rack, permitting release of the carriage to its extreme left hand position.
The ten digit keys 63, Release key 53, and Space key 30 are arranged in three rows as shown in Figs. 1, 6, and 7. Each digit key comprises the button 53 mounted on a rectangular stem 62 extending through rectangular perforations in each of two guide plates 64, securely mounted on two frame plates 55, 66, and which are in turn secured to base I5 to form a supporting structure suitably enclosed by a cover plate 61. The key stem for each of the center row of keys extends vertically downward through said guide plates to rest on a stud 69 on one arm of a bell-crank 58, while the key stem of each of the outer row keys is cut off below the lower guide plate and carries, instead, an inwardly projecting arm I0, bent downward through a perforation in lower guide plate 68 to similarly rest on a stud on the supporting arm of its corresponding bell-crank 68. Said bell-cranks are loosely mounted on a fixed cross shaft II suitably supported by the two frame plates 65 and 66, and are normally urged counter-clockwise by action of a spring I2, Each of said bell-cranks 68 is formed with a horizontal arm projecting to the right directly above a row of steel balls I3 in a slotted housing extending between the said two side frame plates in such a manner as to constitute a ball lock mechanism,
the operation of which is well known to the art, the purpose of which is to allow no more than one bell-crank 68 and corresponding actuating digit key to be depressed at one time. The vertical arm of each bell-crank 68 has pivoted thereto at I5 a link I6 having a slot 11 to engage a pin I8 on a lever "I9 which is secured by a collar to a rock shaft suitably journaled in the two side frame plates 65 and 66. Likewise secured by a collar to each rock shaft 80 are two or more fingers 83 extending downwardly to engage studs 82 on individual punch conditioning slides 8|. Said punch conditioning slides, as seen in Figs. 4 and '7, are guided through comb plates 88 and 85 secured to punch supportingblocks 86 and 81, respectively, to rest loosely near each end thereof, on the heads of punches 88 and 89, and are normally urged to the right, as shown in Fig. 7, by action of springs 90. Motion imparted by depression of a digit key 63 is carried through bell-crank 68, link I6, lever I9, rock shaft 80, fingers 83, to shift the punch conditioning slides engaged thereby to the left wherein shoulders 9| and 92 at each end thereof will act as punch gags for the punches 88 and 89, respectively, as hereinafter described. The punches 88 (Fig. 7), for perforating the lower zone of a Powers ninety column punch card, are supported as aforementioned in the block 88 and a guide block 93, both of which are secured to base I5 and extend over the card bed at the left hand end of the key actuated mechanism. The punches 88 are aligned in a row of twelve to correspond with the twelve index positions from top to bottomin a Powers type statistical card, and, likewise, to support one end of the twelve punch conditioning slides 8|. However, only the front six of said punches 88 ar effective for perforating a card, they being positioned over the six index positions comprising a column in the lower zone of a card. The rearmost six punches 88, positioned over the six index positions of the card's upper zone, are dummy punches with the cutting edge eliminated, their purpose being to support the six rearmost punch conditioning slides BI, and their incidental depression during actuation of the punches 88 is ineffective to cause a card perforation. All of said punches 88 are normally urged -upward by compression springs 94 resting on guide block 93 and pressing against the punch heads thereby allowing free passage of a punched card therebelow. Punch dies 95 are secured in the base I5 in any well known manner, A hammer bail 96 is pivoted to shoulders on the block 88 and is rocked by a hammer bail arm 97 pivotally connected thereto and extending downward through an opening in base I5, where it is pivoted to a bell-crank I02 mounted on the under side of the base. Said bell-crank is connected by link I00 to an armature IOI cooperating with electromagnet I03, both armature and magnet being suitably secured to the underside of the base. The energization of the magnet rocks its armature I III counter-clockwise (Fig. 6) against the tension of spring I08 to rock hammer bail 96 clockwise through link I00, bell-crank I02 and hammer bail arm 91, thereby depressing whichever shoulders SI of slides 8| have been laterally shifted into its path, and in so doing driving the associated punch or punches through the card II. Deenergization of magnet I08 permits return of the parts to normal or inactive position by spring I08. The construction and operation of the upper zone punch mechanism is similar to that of the lower zone just described, except that the six efiective punches are the rearmost six in the row of punches I09, being aligned with the six column positions in the upper zone of a card, while the front most six are the dummy or inefi'ective punches in said row. Accordingly,
a description thereof need be only briefly noted here wherein energization of magnet I03 rocks armature I08 against the tension of spring III, and rocks hammer bail I01 through link I09, bell-crank II and hammer bail arm I to depress whichever shoulders 32 of punch conditioning slides 8| have been laterally shifted into its path, thereby driving the corresponding punches 89 yieldably supported by springs H2 in block 81 and guide block II3 through the upper zone of the card I! and into punch dies I I4.
The card carriage is automatically spaced, upon the actuation of any punch, by means of spacing bails H6 or II! which underlie the punch conditioning slides of each end thereof. Spacing bail IIB (Figs. 3, 7, and 8) is carried by arms 42 integral therewith secured to the rock shaft M as heretofore described, and, spacing bail I I1 is carried by a pair of arms I I8 secured to a rock shaft H9 journaled to arms I20 formed on the punch supporting block 81. The rearmost arm III! of bail II'I extends downward and carries a lug I2I (Fig. 3) projecting directly beneath the escapement bail 44. Thus the depression of a punch conditioning slide 8I (Fig. 3) by hammer bail I01 rocks spacing bail III clockwise to raise escapement bail 44 through lug I2I and, similarly, the depression of a punch conditioning slide by hammer ball 96 rocks spacing bail IIIi counter-clockwise, likewise raising escapernent bail 44 through the lug 43. Theefiect of raising the escapement ball 44 causes carriage spacing, as has been previously described in connection with the operation of the space key. In this manner the depression of any punch slide by either hammer bail simultaneously actuates one or the other spacingbaiis, resulting in the spacing of the carriage to position the card I! in preparation for perforating the next succeeding column.
The use of rock shafts 80 (Figs. 5 and 8) in a machine of this type provides a simple and expedient means for conditioning a. plurality of punches as is required in code punching, by the depression of only one digit key. As hereinbefore mentioned, the punch code used in the present disclosure is one in which the zero and all odd digits are consecutively represented by a perforation in a single index position, and the even digits are represented by perforations in the next lower odd digit index position in combination with the "nine digit index position. Ac-- cordingly, those rock shafts 80 linked to the zero and odd digit keys each carry two fingers 83 for shifting one punch conditioning slide 8I efiective on punches operable in each of the two card zones, while those rock shafts linked to the even digit keys each carry four fingers 83 for shifting two punch conditioning slides in accordance with the code to effective position over punches operable in each of the two card zones. Fig. 9 is a fragmentary view showing mechanism actuated by the six digit key wherein it can be seen that the rock shaft 80 carries four fingers 83 for shift. ing four punch conditioning slides 8|, two for the upper zone and two for the lower. Number "six" being an even digit and represented in the six position code by perforations in the fourth and sixth positions from the top of a column, the slides shifted by depression on the "six digit key are, accordingly, those conditioning two of the punches 89 aligned with the fourth and sixth position in the punch cards upper zone, and those conditioning two of the punches 8Il aligned with the fourth and sixth columnar position of the card's lower zone. Thus it is apparent that upon depression of a digit key, the resultant perforation can be effected in either the upper or lower zone of a ninety column card. depending on which of the two hammer balls 96 or I 0'! is caused to rock in cooperation therewith. As can be seen by reference to Figs. 4 and 5, it is obvious that any code combination can be obtained by grouping the fingers 83 on the cross shafts 80 in such a manner that the rocking of any shaft 80 by an individual key will result in the positioning of one or more punch slides 13! in accordance with the desired code.
An electrical circuit to either magnet I03 or I08 is closed upon depression of any digit key through the medium of a contact bail I25 (Figs. 4 and 6) extending beneath the horizontal arms of key operated bell-cranks 68 which bail is carried by arms I24 and I26 mounted on stud shaftsin side assembly frame plates 65 and 66. Ball arm I20 extends beyond the pivot point and has pivoted on its free end a. contact pawl I2'I (Figs. 6 and 12) pulled by spring I3I in a counter-clockwise direction against a stud B2. A lip on the contact pawl I2I normally engages the lower spring contact I29 of a pair of contacts I29 and I28 suitably insulated and secured to side frame plate 66. A link I34, formed as shown and pivoted to the contact pawl I21 has a slot near its lower end through which passes a tie link I35 pivoted to hammer bail arms 91 and I05. Depression of a digit key rocks the contact bail I25 clockwise, raising contact pawl I21. closing contacts I29, I28 to complete an electrical circuit (Fig. 11) through a transfer switch hereinafter described, to either magnet I03 or I06. Upon energization of either magnet its associated hammer bail arm 91 or I05 is pulled downward to rockits corresponding hammer bail, at the same time lowering tie link I35 to a point Where it engages the lower edge of the slot in link I34, thereby rocking contact pawl I21 clockwise. The rocking of the pawl disengages it from spring contact I29 permitting the contacts I29 and I28 to open the circuit. The circuit remains open and cannot be again closed until release of the digit key permitting return of contact ball I 25 to normal by spring I 30, and the concurrent lowering of the' pawl I 21 to again engage its lip under spring contact I29 in preparation for a succeeding punching operation.
The circuit completed by the closing of contacts I 28, I29, above described, passes through a two way transfer switch I36 mounted on the rear of base I5 as can be seen in Figs. 4, 5, and 8. The transfer switch comprises two contacts I31 and I38 having a common contact I40 mounted on a center spring I39. One or the other of contacts I37 and I38 is always closed, and they are controlled by a contact slide I4I abutting the common center spring and extending through a slot in the base I5. A roller I42 mounted on the slide engages the side surface of the carriage escapement rack 2I. As best seen in Fig. 10, the side of the carriage escapement rack is formed with a cam I43 extending over a portion of its surface, which cam, in cooperating with roller [02, acts to shift the contact slide rearward away from the carriage escapement rack, thereby breaking contact l3! and making the contact I38. Electromagnets I03 and I00 are wired to the alternate contacts of the transfer switch as shown in the wiring diagram Fig. 11. Thus, when the card carriage is moved to its extreme right hand position preparatory to the punching of a card, contact slide roller I42 engages the side surface of the carriage escapement rack, permitting the spring action .of the center contact spring of switch I36 to close contact l3! completing the circuit to magnet I06, it being the actuating meansfor driving punches 89 which, as aforementioned, are used for punching only in the upper zone of a ninety column card. This circuit to magnet IDS-is thus maintained during the forty-five columnar space positions of the card carriage to permit complete punching of the upper zone upon the completion of which, as the carriage proceeds leftward-to the forty-sixth space position, cam I43 engages roller I42 to shift contact slide Ml rearward. Said shifting of the slide opens the contact I31 and closes contact I38 opening the circuit to magnet I06 and closing the circuit to magnet M3, maintaining said circuit for the remaining forty-five columnar space positions of the card carriage. The linear distance between rows of punches -88 and 89, being the equivalent of forty-five carriage spaces, the spacing of the carriage upon the perforation of the last upper zone or forty-fifth card column by punches 89 will carry the card to a position where the first lower zone or forty sixth card column can be perforated by punches 8B. In
- this manner the entire ninety columns of the card may be punched in one continuous and uninterrupted series of punching operations, the
transfer from upper to lower zone being effected automatically through the unique arrangement of the punches, transfer switch, and associated mechanism.
Suitable means for conducting a source of electrical energy to the circuit herein disclosed may comprise any such means known and familiar to the art. In the preferred embodiment such means comprises a dry disk rectifier in a combination circuit permitting use of either an A. C. or D. C. potential in the manner disclosed and fully described in the aforesaid Patent 2,l5l,232,'issued to Roggenstein March 21, 1939.
While I have described what I consider to be a highly desirable embodiment of my invention, it is obvious that many changes in form could be made without departing from the spirit of my invention, and I, therefore, do not limit myself to the exact form herein shown and described, nor to anything less than the whole of my invention as hereinbefore set forth, and as hereinafter claimed.
What we claim as new, and desire to secure by Letters Patent. is:
1. In a machine for perforating a plural zoned statistical card, means for spacing said card in successive positions corresponding to successive columns of said card, and key controlled perforating means separately grouped in successively offset rows aligned with the columnar index positions of each separate zone and successively operable in each of said separate zones of said card.
2. In a machine for perforating a statistical card having separate parallel zones of successive data registering columns, means for rectilinearly advancing said card to successive positions to correspond to each successive columns in each separate zone of said card, and key controlled perforating means grouped in separate rows successively offset relative to the rectilinear advance of said card so as to align with successive columns of said card in each successive card position.
3. In a machine for perforating a plural zoned an additional row of key controlled punches aligned to perforate another zone of said a in additional separate spaced positions of the card, and means for advancing each zone of said card successively into said spaced positions relative to the row of punches aligned with each respective zone of the card.
4. A machine for perforating a plural zoned statistical card comprising spacing means for advancing said card step by step into punching positions corresponding to the separate columns of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for conditioning related punches in each of said separate groups of punches, and means for operating the punches so conditioned by said key actuated means.'
5. A machine for perforating a plural zoned statistical card comprising spacing means for advancing said card into separate positions for each separate column of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for simultaneously conditioning related punches in each of said separate group of punches, and means selectively enabled according to the relative position of said card for operating the con ditioned punches in one of said separate group of punches.
6. A machine for perforating a plural zoned statistical card comprising spacing means for advancing said card into separate positions for each separate column of said card, punches separately grouped in successive rows aligned with the individual zones of said card, key actuated means for simultaneously conditioning related punches in each of said separate rows of punches, punch operating means for each of said separate groups of punches, and transfer means responsive to the movement of said spacing means for selectively enabling one of said punch operating means.
7. In a machine for perforating a plural zoned statistical card, a card carriage, escapement means for spacing said carriage in successive positions corresponding to successive columns of the card, and key controlled punches separately grouped in offset rows to successively align with the columnar index positions of each separate zone in predetermined carriage positions.
8. In a machine for perforating a plural zoned statistical card, the combination with a row of punches aligned to perforate one zone of said card in separate successively spaced positions of the card, operating means for said row of punches, of an additional row of punches aligned to perforate another zone of said card in addi-- tional successively spaced positions of the card, operating means for said additional row of punches, punch conditioning means for simultaneously gagging related punches in each of said rows of punches, and transfer means responsive to the advance of said card through predetermined positions for selectively enabling the corresponding punch operating means.
9. In a key operated machine for perforating a statistical card in accordance with a multiple hole code, the combination with 'punches aligned with the index positions of successively spaced card columns, interponent slides movable into gagging position relative to each of said punches, and means for operating the punches gagged by said slides, of a rock shaft for and actuated by each operating key and common to said slides, and means mounted on each shaft and selectively engaging said slides for moving the slides selected in accordance with said code into gagging position relative to said punches.
10. In a key operated machine for perforating a plural zoned statistical card in accordance with a multiple hole code the combination with punches separately aligned with the index positions of successively spaced card columns of each separate zone, interponent slides movable into gagging position relative to punches aligned with each of said separate zones, and selectively enabled means for separately operating the gagged punches aligned with each separate zone, of a rock shaft for and actuated by each operating key and common to said slides, and means mounted on each shaft and selectively engaging slides effective in each of said separate zones for simultaneously moving the slides selected in accordance with said code into gagging position relative to the punches aligned with each of said separate zones.
11. A machine for perforating a plural zoned statistical card comprising a base, a card carriage, escapementmeans for successively spacing said carriage relative to said base, a row of punches aligned to perforate separate columns in one zone of said card in one group of carriage positions, an additional row of punches aligned to perforate separate columns in another zone of said card in another group of carriage positions, key actuated punch conditioning means for simultaneously gagging related punches in each of said separate rows of punches, individual punch operating means for each ,of said separate rows of punches, and transfer means responsive to the movement of said carriage for selectively enabling one of said punch operating means depending upon the position of said carriage.
12. A machine for perforating a plural zoned statistical card comprising a base, a card carriage, escapement means for successively spacing said carriage relative to said base, a row of punches aligned to perforate separate columns in one zone of said card in one group of carriage positions, an additional row of punches aligned to perforate separate columns in another zone of said card in an additional group of carriage positions, key actuated punch conditioning means for each group individual to a zone of said card. a
card carriage for carrying said card step by step past said groups of punches, operating means individual to each group of punches and means controlled by the position of said carriage for selectively enabling said operating means.
14. In a punch for perforating a plural zoned statistical card in accordance with a multiple hole code, a base, a plurality of groups of punches each aligned to perforate in one zone of said card and positioned apart along said base, a card carriage, escapement means for successively spacing said carriage relative to said groups of punches, an actuating bail for each group of punches, interponents adapted to be shifted to an effective position between said bails and punches, a plurality of cross shafts one for each character to be perforated, shifting members secured to each shaft one of said members for each of said interponents which corresponds in each card zone to an index position of the character associated with each shaft, a key actuated member connected to each of said shafts, said actuating member rocking said shaft to position said interponentsin effective position, and means under control of said carriage for selectively operating one of said bails.
WALTER F. KELLEY. EDWIN O. ROGGENSTEIN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,034,341 Gregory et a1 Mar. 17, 1936 2,160,171 Roggenstein May 30, 1939 2,210,552 Maul Aug. 6, 1940 2,228,464 Kraft Jan. 14, 1941 simultaneously gagging related punches in each
US608534A 1945-08-02 1945-08-02 Punch Expired - Lifetime US2421069A (en)

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US608534A US2421069A (en) 1945-08-02 1945-08-02 Punch
FR941712D FR941712A (en) 1945-08-02 1946-08-01 Improvements to statistical machines
GB23024/46A GB617358A (en) 1945-08-02 1946-08-01 Improvements in or relating to machines used in perforating cards for use in statistical machines

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876607C (en) * 1950-12-21 1953-05-15 Michael Maul Key-controlled punch machine for multi-deck payment cards
US2703142A (en) * 1950-12-21 1955-03-01 Maul Punching machine for multiple deck record cards
US2729289A (en) * 1951-11-17 1956-01-03 Maul Michael Keyboard operated multi-deck record perforating machines
US2800181A (en) * 1956-02-27 1957-07-23 Melpar Inc Card punch
US2809695A (en) * 1949-11-08 1957-10-15 F S Smithe Machine Co Inc Die presses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2034341A (en) * 1934-03-06 1936-03-17 Accounting & Tabulating Corp Machine for producing records on statistical cards
US2160171A (en) * 1937-11-04 1939-05-30 Remington Rand Inc Card punch
US2210552A (en) * 1938-05-24 1940-08-06 Firm Deutsche Hollerith Maschi Card punching machine
US2228464A (en) * 1939-11-28 1941-01-14 Meyer Sheet perforating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2034341A (en) * 1934-03-06 1936-03-17 Accounting & Tabulating Corp Machine for producing records on statistical cards
US2160171A (en) * 1937-11-04 1939-05-30 Remington Rand Inc Card punch
US2210552A (en) * 1938-05-24 1940-08-06 Firm Deutsche Hollerith Maschi Card punching machine
US2228464A (en) * 1939-11-28 1941-01-14 Meyer Sheet perforating device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809695A (en) * 1949-11-08 1957-10-15 F S Smithe Machine Co Inc Die presses
DE876607C (en) * 1950-12-21 1953-05-15 Michael Maul Key-controlled punch machine for multi-deck payment cards
US2703142A (en) * 1950-12-21 1955-03-01 Maul Punching machine for multiple deck record cards
US2729289A (en) * 1951-11-17 1956-01-03 Maul Michael Keyboard operated multi-deck record perforating machines
US2800181A (en) * 1956-02-27 1957-07-23 Melpar Inc Card punch

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FR941712A (en) 1949-01-19

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