US3394882A - Card punch mechanism - Google Patents

Card punch mechanism Download PDF

Info

Publication number
US3394882A
US3394882A US590684A US59068466A US3394882A US 3394882 A US3394882 A US 3394882A US 590684 A US590684 A US 590684A US 59068466 A US59068466 A US 59068466A US 3394882 A US3394882 A US 3394882A
Authority
US
United States
Prior art keywords
arm
punch
drive
solenoid
control
Prior art date
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
Application number
US590684A
Other languages
English (en)
Inventor
Joseph F Cattorini
Larry L Leiter
Donald E Landis
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NCR Corp filed Critical NCR Corp
Priority to US590684A priority Critical patent/US3394882A/en
Priority to GB45369/67A priority patent/GB1136538A/en
Priority to SE14339/67A priority patent/SE352185B/xx
Priority to BE705587D priority patent/BE705587A/xx
Priority to CH1505567A priority patent/CH458802A/fr
Priority to DE19671549819 priority patent/DE1549819A1/de
Priority to FR126286A priority patent/FR1542064A/fr
Priority to AT980367A priority patent/AT267920B/de
Application granted granted Critical
Publication of US3394882A publication Critical patent/US3394882A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

Definitions

  • This invention relates to perforating apparatus and more particularly to a selectively controlled actuating device which may be utilized to drive a punch or an escapement mechanism, the operation being made at high speeds.
  • the actuating device of the present invention is of a solenoid-operated, interposer type of construction.
  • One object of this invention is to provide such an actuating device which is simple in operation and capable of highspeed operations.
  • Another object of this invention is to provide a solenoid-operated actuating mechanism in which all moving parts, including the solenoid arm, are positively restored by cam action.
  • a further object of this invention is to provide an actuating mechanism in which there are no moving parts during a state of non-selection.
  • Another object of this invention is to provide a completely self-contained actuating mechanism on a removable package for ease of adjustment and replacement.
  • a further object of this invention is to provide an actuating device, the operation of which is initiated by the de-energization of a solenoid.
  • Another object of this invention is to provide a solenoid-operated actuating device in which the solenoid arm is restored during the actuation of the interposer.
  • this invention provides an actuating a-rm mounted adjacent a pair of constantly operating shafts, said arm being moved into engagement with one of such shafts upon de-energization of a solenoid, engagement with the shaft resulting in a downward movement of the actuating arm, thereby actuating a punch or drive mechanism, after which the second shaft engages the arm and returns it to its home position.
  • the actuating mechanism includes a latch member operated by the solenoid for releasing said arm for engagement by said shaft and a restoring arm actuated by the downward movement of said actuating arm for conditioning said latch member to hold the actuating arm in its home position upon the energization of the soleacid.
  • FIGS. 1A and 1B taken together, constitute a front view of the perforating apparatus, showing the main drive system and the punch mechanism.
  • FIG. 2 is a side detail view of the perforating apparatus, showing the main drive system.
  • FIG. 3 is a back partial detail view of the punch mechanism.
  • FIG. 4 is a detailed sectional view taken on the line 4--4 of FIG. 1, showing the actuating device used to operate the punch pins.
  • FIG. 5 is a detailed sectional view taken on the line 5 -5 of FIG. 1, showing the idler wheel control mechamsm.
  • FIG. 6 is a partial detailed View of the idler wheel control mechanism.
  • FIG. 7 is a side detailed view of the escapement mechanism, showing the actuating device for controlling the operation of the card feed drive rollers.
  • FIGS. 1A, 1B, and 2 there is shown, bolted to the main frame 20, a motor support mount 21, on which is mounted a motor 22.
  • a motor support mount 21 on which is mounted a motor 22.
  • Secured to the motor shaft 23 are a pair of pulleys 24, 25, which accommodate the drive belts 26 and 27, respectively.
  • the other end of the belt 26 engages a pulley 28, mounted to a magnetic slip clutch 30, secured to a shaft 31, Sup ported by ball and roller bearings 32 and the support member 33.
  • the shaft 31 has a stub portion 34, which engages one end of a torsion spring 35.
  • the other end of the torsion spring 35 engages a drive shaft 36, rotatably mounted in a pair of supporting mounts 37, which are attached to a die member 38.
  • the die member 38 is supported between the side frames 40, 41 of the apparatus.
  • the magnetic clutch 30 is of the type which will transmit a torque to the torsion spring 35, thereby rotating the torsion spring until a predetermined torque limit is reached, at which point the magnetic clutch goes into a slip condition, thereby holding the torsion spring at the predetermined torque.
  • the torsion spring is used to drive the drive shaft 36.
  • the drive belt 27 engages a pulley 42 (FIG. 2), secured to a restoring shaft 43, which, as will be described more fully hereinafter, is used in the card feed escapement mechanism.
  • a gear 44 Secured to the shaft 43 is a gear 44, which drives a similar gear 45 (FIG. 2), secured to a drive shaft 46, used in the operation of the escapement mechanism.
  • a second pulley 47 which drives a belt 48.
  • the belt 48 drives a guide pulley 50, rotatably supported on a hub 51 (FIG. 1), and a driven pulley 52, secured to a drive shaft 53 rotatably supported by the side frames 40, 41 of the perforating apparatus.
  • a gear 54 pinned to the shaft 53, drives a second gear 55 pinned to a restoring shaft 56 similarly rotatably supported by the side frames 40 and 41.
  • Both shafts 53, 56 are each supported by a pair of ball bearing races 57, each mounted in a bearing support 58, which in turn is bolted to one of the side frames 40, 41.
  • the drive shaft 53 and the restoring shaft 56 are utilized in the actuating device used to drive the punch pins in the punch mechanism, as will be described more fully hereinafter.
  • the hub 51 (FIGS. 1 and 2), on which the pulley 50 is supported, is mounted on a frame member 60, which in turn is secured to the side frame 40 by means of screws 61.
  • Pinned to the other end of the shaft 53 are three timing cams 62 (FIGS. 1, 3, and 7), one having one contact point 63, while the other two each have four contact points 63, which interrupt a magnetic field generated at the tip 64 of an associated magnetic pickup 65.
  • the signals generated by the magnetic pickups 65 are transmitted over a conductor 66 for use in controlling the operation of a 'number of solenoids in a manner which will be described more fully hereinafter.
  • Each of the magnetic pickups 65 is mounted on a support member 67, secured to the side frame 41.
  • a timing dial 68 rotatably mounted on the shaft 53, is used in timing the earns 62.
  • FIGS. 3 and 4 there is shown the punch pin section of the card punch apparatus.
  • an upper guide block 70 and a lower guide block 71 each containing a plurality of slots 72 on their inside surfaces. These slots accommodate a number of punch-actuating mechanisms.
  • Each mechanism is composed of a support member 73,- to which is secured a solenoid 74.
  • the support member is positioned within a slot 72 of the guide blocks 70, 71 by an adjustment screw 69 and a spring-operated plunger 79.
  • Rotatably mounted on the support member 73 is a solenoid arm 75 controlled by the solenoid 74 and a restoring arm 76.
  • the solenoid arm 75 is engaged by one end of a spring 77, secured to the support member 73, while the restoring arm is engaged by one end of a spring 78, also secured to the support member 73.
  • an interposer arm 80 Rotatably mounted on the front portion of the support member 73 is an interposer arm 80, the top 81 of which is positioned adjacent the drive shaft 53.
  • the portion of the drive shaft 53 and the restoring shaft 56 located adjacent the punch-actuating mechanism comprises four projections 82, which, in the case of the drive shaft 53, engage the top 81 of the interposer arm 80 when the arm is moved into an engaging position.
  • a die member 38 mounted between the side frames 40, 41 of the apparatus.
  • the card is a standard tabulating punch card which is punched serially column by column.
  • Mounted on the die member 38 is a guide member 83, on which are mounted four pre-hardened strips 84, through which are positioned the punch pins 85 of the punch mechanism.
  • the pre-hardened strips 84 act to keep the punch pins in alignment.
  • a pre-hardened strip of material 86 is also secured to the die member 38.
  • Each punch pin 85 has a cup member 87 (FIGS. 3 and 4), which cooperates with one of the pre-hardened strips 84 to enclose a return spring 88, which helps to return the punch pins 85 to their home positions and to keep such pins in the home positions.
  • each punch pin has an L-shaped portion 90, which engages the lower end of the interposer arm 80 (FIG. 4). This engagement is due to the action of the spring 88.
  • the solenoid 74 is energized whenever a punching operation is not to occur.
  • the solenoid 74 of the actuating mechanism is de-energized, which allows the spring 77 to rotate the solenoid arm 75 counter-clockwise until the lower end 91 of the arm engages a stop stud 92 mounted on the support member 73.
  • the solenoid arm rotates, it releases the interposer arm 80 for counter-clockwise movement by the action of the restoring arm 76, which is rocked clockwise by the spring 78.
  • the counter-clockwise movement of the interposer arm 80 is limited by a guide stop stud 93 mounted on the support member 73. This stopping of the interposer arm 80 by the stud 93 allows the top portion 81 of the interposer arm 80 to be engaged by one of the projections 82 of the shaft 53, which drives the interposer arm downward, against the action of the spring 88, thereby driving its associated punch pin 85 through the card positioned on the die member 38.
  • the downward movement of the interposer arm 80 is controlled by a slot 94, located in the interposer arm 80, which slides over a stud 95, mounted on the support member 73.
  • the interposer arm 80 has a front extension 96, which trips a magnetic pickup 97 during the downward movement of the arm.
  • the pickup 97 is mounted on a support 98 extending between the two side frames 40, 41 of the apparatus.
  • the signal generated by the tripping of the pickup 97 is used as a check of the punch operation.
  • the arm rocks the restoring arm 76 counter-clockwise, thereby El6 storing the solenoid arm 75 to its home position against a stop stud 100.
  • the timing is such that the solenoid is again energized if no punching is required in the next column of the card. If punching is required, the solenoid remains de-energized.
  • the solenoid 74 is not strong enough to pull the solenoid arm 75 across the large area gap when it is dropped out, but it is strong enough to hold the solenoid arm when the arm is moved into engagement with the solenoid by the action of the restoring arm.
  • solenoid arm is fully restored to its home position when the interposer arm is at the end of its downward movement.
  • one of the projections 82 of the restoring shaft 56 engages the L-shaped portion of the punch pin 85, thereby driving the pin and the interposer arm 80 upward to their home positions.
  • the solenoid 74 had been energized at this time, the lower end of the solenoid arm 75, being in its home position, resists the upward movement of one end of the interposer arm 80, thereby causing the interposer arm to rotate clockwise as the arm moves towards its home position. This clockwise rotation of the arm moves the top portion 81 of the arm out of an engaging position with the projections 82 of the drive shaft 53.
  • FIG. 5 there is shown a detailed view of the idler wheel mechanism used in driving the punch card past the punch pins.
  • the idler wheel 101 is shown rotatably supported on a lever 102, which in turn is rotatably mounted on a stud 103 (FIGS. 3, 4, and 5) secured to the guide member 83.
  • One end of the lever 102 supports an adjustment screw 104 (FIGS. 1, 4, and 5) for controlling the rotational travel of the lever, while the other end of the lever has an overhang portion 105 (FIGS. 1 and 4), which is engaged by a spring 106 mounted between the overhang portion and an extension member 107 (FIGS.
  • the spring 106 urges the lever to rotate counterclockwise to move the idler wheel 101 into engagement with a punch card which would normally be positioned on the die 38 between the idler wheel and a drive wheel 108 mounted on the shaft 36.
  • a control arm 11.0 rotatably mounted on the stud 103 , the upper portion of which constitutes the arm of a pair of solenoids 111 (FIGS. 1 and 5) mounted to the side frame 40.
  • the arm has rotatably mounted thereon an actuating wheel 112, which coacts with a cam portion 113 of the restoring shaft 56 to move the arm 110 into engagement with the solenoid 111.
  • a stud 114 is also mounted on the arm 110 a stud 114, to which is secured one end of a spring 115, the other end of which is secured to a stud 116 mounted on the guide member 83.
  • a second spring 117 is secured between the stud 114 and the stud 118 mounted on a latch arm 120 rotatably supported on the lever 102.
  • the idler wheel Under normal punching operations, the idler wheel will be in the position shown in FIG. 5 except that the control arm 110 will be in contact with the solenoids 111, which will be energized. This condition will drive a card past the punch pins during a punching operation.
  • the solenoids 111 When a new card is to be punched, the solenoids 111 will be deenergized by a signal generated by one of the timing cams 62. This will result in the control arm 110 being rocked counter-clockwise by the spring 115, which allows the actuating wheel 112 to engage the cam portion 113 of the shaft 56.
  • This clockwise movement of the arm 110 moves a stud 127 from engagement with the top portion of the latch arm 120, thereby allowing the arm 120 to be rocked counter-clockwise by the spring 117, resulting in the latching of the stud 127 by a slot 128 in the arm 120.
  • the latch arm 120 will, in the latch position, be adjacent a fiat portion 126 of a shaft 124 rotatably supported between the side frames 40, 41 (FIG. 3).
  • the idler wheels 101 and the lever 102 Upon the clockwise rotation of the arm 110 by the cam action of the shaft 56 on the wheel 112, the idler wheels 101 and the lever 102 will be rotated clockwise, thus allowing a new card to be positioned between the idler wheels 101 and the drive wheels 108.
  • the solenoids 111 will be energized at this time to hold the control arm 110 and the idler wheel 101 in an up position.
  • the solenoids 111 will be deenergized, thereby allowing the control arm to be rocked counter-clockwise by the spring 115.
  • a solenoid 121 mounted on the side frame 40, is energized, thereby rotating a disc 122, attached thereto, clockwise.
  • An arm 123 rotatably mounted on the disc, transmits the rotation of the disc to the shaft 124 by means of an arm 125 pinned to the shaft 124. This is shown in FIG. 6.
  • the magnetic slip clutch 30 (FIG. 1) will wind up the torsion spring 35 to a predetermined torque.
  • the spring 35 engages the shaft 36, to which the two drive wheels 108 are secured.
  • the drive wheels are composed of an abrasive material to facilitate moving of the punch card past the drive wheels.
  • Secured to one end of the shaft 36 is a ratchet wheel 130 engaged by a pair of anti-backup detent blades 131.
  • One of the blades 131 is mounted on the side frame 41, while the other is secured to a support member 132 mounted to the side frame 41.
  • a spring 134 Positioned within a hole 133 in the support member 132 is a spring 134, one end of which engages a cap member 135, while the other end abuts a movable support member 136, the position of which is controlled by a screw 137.
  • the cap 135 supports a ratchet detent blade 138, which engages the ratchet wheel, holding the ratchet wheel against the torque transmitted by the torsion spring 35.
  • a trip lever 140 rotatably mounted to a support member 141, has a hook portion which engages the tip of the detent blade 138.
  • a spring 139 mounted between the blade 138 and the support member 141, normally urges the blade into engagement with the ratchet wheel 130.
  • the lower end of the lever 140 is engaged by one end of an escapement pin 142, which is similar to the punch pin 85, previously described.
  • the escapement pin 142 is actuated by an actuating mechanism similar to that previously described with regard to the punch mechanism.
  • the support member 143 of the mechanism is mounted within a pair of guide members 144 secured to the side frame 41.
  • An adjustment screw 145 and a plunger 149 position the support member 143 with relation to the escapement pin 142.
  • the solenoid arm 147 is rocked clockwise by the spring 148, allowing the restoring arm 150 to be rocked counter-clockwise by its spring 78, resulting in the interposer arm 151 being moved to a position for actuation by the drive shaft 46.
  • the drive shaft 46 drives the interposer arm 151 and the escapement pin 142, which abuts the interposer arm, to the left, as viewed in FIG. 7, against the action of the spring 152.
  • This movement of the pin 142 rotates the lever clockwise, thereby moving the detent blade 138, against the action of the spring 139, from engagement with the ratchet wheel, which, under the action of the torsion spring 35, will be rotated clockwise, thereby allowing the drive wheels 108 to move the punch card to the right, as viewed in FIG. 5.
  • the solenoid 146 of the actuating mechanism is energized or deenergized. This involves whether the escapement mechanism is to be operated to stop the ratchet wheel. Since the rate of punching of the card can be up to two hundred columns per second, it would normally be that the solenoid will not be energized, and the interposer arm 151 will move to the right along a guide stud 153 until it is engaged and driven to the left by the drive shaft 46.
  • the control pulses for the solenoid 146 of the escapement mechanism are generated by one of the timing cams 62 (FIGS. 1, 3, and 7), the other two timing cams generating pulses to control the solenoid 74 (FIG. 4) used in the punch mechanism, and the solenoids 111 (FIG. 5) in the idler wheel control mechanism.
  • a device for actuating a punch member comprising:
  • said actuating means comprises resilient members one of which engages the other end of said lever member whereby, upon deenergization of said electromagnetic means, said resilient member will actuate said lever member to move said control member into engagement with said first drive member.
  • control member comprises an interposer arm mounted for rotational and rectilinear movement, said arm having a rearward extension engaged by said second control means;
  • said actuating means comprises resilient members one of which engages said second control means to disengage said second control means from said interposer arm upon deenergization of said electromagnetic means, thereby allowing said first control means to rotate said arm into engagement with said first drive member;
  • guide means is positioned adjacent said interposer arm for stopping the rotational movement of said arm and to guide said arm in a rectilinear movement upon actuation by said first drive member.
  • said second control means comprises a solenoid arm having one end positioned adjacent said electromagnetic means and the other end positioned adjacent said rearward extension of said interposer arm, said solenoid arm operated by said resilient member upon deenergization of said electromagnetic means to be disengaged from said interposer arm and said electromagnetic means;
  • said first control means comprises a restoring arm having one end engaging said interposer arm and the other end positioned adjacent said solenoid arm, said restoring arm being adapted to move said solenoid arm into an engaging position with said interposer arm and with said electromagnetic means upon the downward movement of said interposer arm by said first drive means;
  • timing means energizes said electromagnetic means upon the downward movement of said interposer arm whereby, upon the return movement of said interposer arm by said second drive member, said interposer arm will be disabled from engaging with said first drive member.
  • a plurality of punch actuating devices each including (a) a removable support member mounted adjacent one of said punch elements;
  • said restoring arm has one end engaging said interposer arm and the other end positioned adjacent the one end of said solenoid arm, said restoring arm being adapted for movement by the interposer arm after engagement with said first drive shaft, whereby said restoring arm positions one end of said solenoid arm into an engaging position with said interposer arm and the other end of said solenoid arm into engagement with said electromagnetic means.
  • the performing device of claim 9 which includes timing means for energizing said electromagnetic means upon the actuation of said interposer arm by said driv member, whereby said interposer arm will engage the one end of said solenoid arm upon actuation by said second drive shaft to rotate said interposer arm from engagement with said first drive shaft.

Landscapes

  • 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)
  • Conveying Record Carriers (AREA)
US590684A 1966-10-31 1966-10-31 Card punch mechanism Expired - Lifetime US3394882A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US590684A US3394882A (en) 1966-10-31 1966-10-31 Card punch mechanism
GB45369/67A GB1136538A (en) 1966-10-31 1967-10-05 Control device for use in processing record media
SE14339/67A SE352185B (de) 1966-10-31 1967-10-19
BE705587D BE705587A (de) 1966-10-31 1967-10-25
CH1505567A CH458802A (fr) 1966-10-31 1967-10-26 Dispositif de commande pour le traitement de supports d'enregistrement
DE19671549819 DE1549819A1 (de) 1966-10-31 1967-10-28 Steuervorrichtung zur Verwendung fuer Aufzeichnungstraeger verarbeitende Geraete
FR126286A FR1542064A (fr) 1966-10-31 1967-10-30 Dispositif de commande pour le traitement de supports d'enregistrement
AT980367A AT267920B (de) 1966-10-31 1967-10-31 Steuervorrichtung für Aufzeichnungsträger verarbeitende Geräte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US590684A US3394882A (en) 1966-10-31 1966-10-31 Card punch mechanism

Publications (1)

Publication Number Publication Date
US3394882A true US3394882A (en) 1968-07-30

Family

ID=24363251

Family Applications (1)

Application Number Title Priority Date Filing Date
US590684A Expired - Lifetime US3394882A (en) 1966-10-31 1966-10-31 Card punch mechanism

Country Status (7)

Country Link
US (1) US3394882A (de)
AT (1) AT267920B (de)
BE (1) BE705587A (de)
CH (1) CH458802A (de)
DE (1) DE1549819A1 (de)
GB (1) GB1136538A (de)
SE (1) SE352185B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659779A (en) * 1970-03-26 1972-05-02 Ibm Punch mechanism
CN114211565A (zh) * 2021-12-10 2022-03-22 哈尔滨学院 一种塑封卡片加工系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845001A (en) * 1925-07-01 1932-02-16 Tabulating Machine Co Punch action
US2845122A (en) * 1954-12-24 1958-07-29 Ibm High speed punch
US2862555A (en) * 1954-11-12 1958-12-02 Ibm Card punching machines
US3122311A (en) * 1962-04-10 1964-02-25 Sperry Rand Corp Striker bar suspension for selective punch device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845001A (en) * 1925-07-01 1932-02-16 Tabulating Machine Co Punch action
US2862555A (en) * 1954-11-12 1958-12-02 Ibm Card punching machines
US2845122A (en) * 1954-12-24 1958-07-29 Ibm High speed punch
US3122311A (en) * 1962-04-10 1964-02-25 Sperry Rand Corp Striker bar suspension for selective punch device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659779A (en) * 1970-03-26 1972-05-02 Ibm Punch mechanism
CN114211565A (zh) * 2021-12-10 2022-03-22 哈尔滨学院 一种塑封卡片加工系统
CN114211565B (zh) * 2021-12-10 2022-09-09 哈尔滨学院 一种塑封卡片加工系统

Also Published As

Publication number Publication date
GB1136538A (en) 1968-12-11
CH458802A (fr) 1968-06-30
SE352185B (de) 1972-12-18
AT267920B (de) 1969-01-27
BE705587A (de) 1968-03-01
DE1549819A1 (de) 1971-06-03

Similar Documents

Publication Publication Date Title
US3545292A (en) Postal franking machine
GB721315A (en) Improvements in or relating to a record strip feeding device for recording machines
US3394882A (en) Card punch mechanism
US2229696A (en) Recording apparatus
US3732812A (en) Differentially positionable type wheels in remotely controlled print modules
US3415184A (en) High speed serial printing device for teleprinters, accounting machines and data processing equipments
US3612514A (en) Multiple mode geneva drive mechanism
US3744614A (en) Rotating mechanism
US2036016A (en) Printing mechanism
US3367469A (en) Digital printer with plural similar print heads
US2802416A (en) Check endorsing apparatus
US3668942A (en) Indexing mechanism
US2999625A (en) Tape transport apparatus
US3239216A (en) Feeding apparatus
US4461587A (en) Embossing machine having a movable carriage for character and like spacing
US3690250A (en) Compact label printer
US2451365A (en) Record tape advancing device
GB578575A (en) Improvements in or relating to record card controlled printing machines
US2150227A (en) Tabulating machine
US2294739A (en) Elapsed time recorder
US2971620A (en) Positioning clutch
US2244242A (en) Printing machine
GB688383A (en) Improvements in or relating to record-card-controlled machines
US2935934A (en) Printing mechanisms
US2832456A (en) Long paper feeding mechanism for record controlled machines