US3616749A - Key controlled setting apparatus for printing wheels in rotary duplicators - Google Patents

Key controlled setting apparatus for printing wheels in rotary duplicators Download PDF

Info

Publication number
US3616749A
US3616749A US809487A US3616749DA US3616749A US 3616749 A US3616749 A US 3616749A US 809487 A US809487 A US 809487A US 3616749D A US3616749D A US 3616749DA US 3616749 A US3616749 A US 3616749A
Authority
US
United States
Prior art keywords
printing
wheels
switch
printing wheels
coupling
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
US809487A
Other languages
English (en)
Inventor
Gerhard Ritzerfeld
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3616749A publication Critical patent/US3616749A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2700/00—Manifolding, printing or duplicating for office purposes
    • B41P2700/10—Hectographic line duplicators

Definitions

  • a printing mechanism including an ordinal series of digital printing wheels is set to selected digital positions by an electric control circuit including an ordinal series of digital sets of manually operated key switches. After actuation of a key switch for each printing wheel, a start switch is operated whereupon the printing wheels are automatically set to the selected printing position.
  • the mechanism is built into a cavity of a printing cylinder so that a copy sheet imprinted by the same is also imprinted by the printing wheels. It is also possible to arrange the printing wheels in the path of movement of a copy sheet imprinted in a printing machine, and to use the printing wheels to print additional information on the copy sheet.
  • Printing devices including a plurality of printing wheels requiring manual setting are known. Particularly, it is known to mount a series of printing wheels in a cavity of a printing cylinder or duplicating roller so that after manual setting of the printing wheels, additional information is imprinted on a copy sheet which is also imprinted by a master attached to the duplicating cylinder.
  • the manual setting of each printing wheel is generally carried out by an implement for engaging recesses of a toothed segment secured to each printing wheel, and to turn the segment with the printing wheel until the implement is stopped by a stationary stop.
  • the manual setting of a printing mechanism having a great number of printing wheels leads to errors and is very time consuming.
  • Another object of the invention is to provide a key controlled setting apparatus for printing whels which is so compact that it can be mounted in a cavity of a printing cylinder.
  • Another object of the invention is to provide a key controlled automatic setting apparatus for printing wheels which can be mounted on the support of a printing or duplicating machine in such a position that the printing wheels print on copy sheets imprinted in the machine and transported away from the printing cylinder.
  • Another object of the invention is to provide a key controlled automatic setting apparatus by which ordinal printing wheels are set to selected digital positions respectively.
  • Another object of the invention is to provide a key controlled automatic setting apparatus which accurately and reliably sets printing wheels to printing positions selected by operation of the respective keys.
  • each printing position of each printing wheel is correlated with a key operated selector switch, and each printing wheel is associated with coupling means which are operated by elec- 3,616,749 Patented Nov. 2., 1971 tromagnetic means under the control of a cam operated interrogation device to couple the printing wheels to drive means in angular position corresponding to the selected digit or character representing types on the same.
  • One embodiment of the invention comprises a series of printing wheels, each having a set of types, and being turnable between a set of printing position, a series of coupling means for connecting drive means with the printing wheels, respectively; a set of cam means rotated by the drive means; and a control circuit.
  • control circuit includes a series of electromagnetic means for operating the coupling means, respectively, a series of sets of key switches, and a set of interrigation switches sequentially actuated by said cam means during one revolution of the same, and connected with said key switches, respectively.
  • each series all have the same number, and the several sets also have the same number. Specifically, if only numbers are to be printed, each series in an ordinal series, and each set is a digital set for representing the ten digits 0 to 9.
  • the apparatus can be used for printing words, so that each printing wheel has types respectively corresponding to an alpha numerical font.
  • the drive means include a shaft supporting the printing wheels for free rotation, and the coupling means are biased to connect the shaft with the printing wheels, and are operable by the electromagnetic means to disengage the printing Wheels and to engage the same in selected angular positions.
  • the arresting means is operated by another electromagnetic to release the printing wheels when the start switch is operated, and to engage the same again when the printing wheels have been set.
  • the coupling means When the printing wheels are mounted on a drive shaft, the coupling means preferably include a set of coupling teeth on the drive shaft, and a biased coupling pawl normally engaging the coupling teeth, and being operable by a control lever of the electromagnetic means to release the coupling teeth to permit relative movement between the printing wheels and the drive shaft.
  • the electromagnetic means can be simultaneously energized for causing disengagement of all coupling means.
  • the set of cam means is mounted on the drive shaft and rotate with the same to sequentially actuate the interrogation switches which are connected with all key switches, each set of key switches being connected in series with the respective electromagnetic means and with manually opened and closed contacts. All electromagnetic means are simultaneously energized by the closed contacts, and are successively de-energized by the interrogation switches at moments depending on the selection of key switches.
  • a respective coupling means again assumes a coupling position, and more specifically, the coupling pawls engage the coupling teeth of the drive shaft.
  • the coupling pawl transports the printing wheel only during a part of the net yet completed revolution of the shaft so that the selected type stops in the printing line.
  • a printing cylinder such as a duplicating roller
  • the printing wheels print on copy sheets already imprinted by the master on the duplicating roller, and being transported away from the same.
  • the printing wheels are mounted for free rotation on a shaft, but are not driven by the same.
  • the shaft is carried by a movable support which is operated by a printing magnet to move the support with the printing wheels to a position for printing on the copy sheet.
  • the transporting means of the copy sheets permit stopping of the same while being imprinted by the printing wheels. After the printing operation, an electromagnet is energized to Withdraw the stop means from the path of the imprinted copy sheet, and the transporting means are again effective to discharge the same.
  • the discharged copy sheet operates a switch which de-energizes the respective magnet so that the stop means becomes again operative to stop the next following copy sheet.
  • the drive means include a motor driven shaft carrying the cam means and being connected by gears to a drive cam which operates cam follower means.
  • Each coupling means includes a first coupling member having a rack portion meshing with a gear secured to the respective printing wheel, and a ratchet portion.
  • a biassed second coupling member in the form of a coupling pawl is reciprocated by the cam follower means and is biassed to engage a coupling recess in the respective first coupling member.
  • Each coupling means also includes an arresting member engaging the ratchet portion of the first coupling member, and being operated by an electromagnetic means.
  • the cam shaft by which the interrogation switches are sequentially operated is driven by a motor through a one revolution clutch so that the cam shaft, and also the drive cam stop after one revolution of the cam shaft.
  • the rack portions of the first coupling members turn all printing wheels one revolution so that all types traverse the printing line.
  • the interrogation switches cause de-energization of the electromagnets controlling the arresting means so that the latter engage the first coupling member and arrest the same in a position in which the respective printing wheel is in a printing position selected by operation of the respective key switch.
  • the drive cam causes return of all coupling members to an initial position during a second revolution performed by the cam shaft upon a second actuation of the one revolution clutch.
  • FIG. 1 is a fragmentary plan view illustrating one en 1 bodiment of the invention which is mounted in a cavity of a duplicating cylinder;
  • FIG. 2 is a fragmentary sectional view taken on the line A-B in FIG. 1 and illustrating a part of the apparatus on an enlarged scale;
  • FIG. 3 is a fragmentary sectional view taken on line C-D in FIG. 1, and illustrating another part of the apparatus on an enlarged scale;
  • FIG. 4 is a diagram illustrating the electric control circuit of the embodiment of FIGS. 1 to 3;
  • FIG. 5 is a fragmentary schematic elevation illustrating a second embodiment of the invention disposed adjacent the printing roller of a duplicating machine for printing on discharged imprinted copy sheets;
  • FIG. 6 is a diagram illustrating the electric control circuit of the embodiment of FIG. 5.
  • FIGS. 1 to 4 DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • printing cylinder 1 is mounted for turning movement on shaft 55, and cooperates with a counterpressure roller, not shown, to imprint on a copy sheet the text of master 128.
  • An indexable drive shaft 30 is mounted in the side walls of the cavity for rotation, and is driven from a motor 31 through a Geneva transmission, see FIG. 3, including a rotary driving member 37 provided with a pin 38 which cooperates with the recessed driven wheel 39 to rotate shaft 30 stepwise in the direction of the arrow F.
  • the blocking member 40 turns with the driving member 37 and blocks turning movement of the driven member 39 intermediate its angular steps until transporting pin 38 engages the respective next following recess 41 of the driven member 39.
  • An ordinal series of printing wheels 28 is mounted on shaft 30, each wheel having a digital set of printing types.
  • a coupling pawl 27 is mounted on each printing wheel 28 for pivotal movement about a pin 29, and is biased by a spring 44 to engage one of the notches between coupling teeth on shaft 30.
  • the number of coupling teeth and notches is the same as the number of types on each printing wheel 28.
  • ten types are provided which respectively represent the digits from,
  • the types are separated by arresting notches 36 which can be axially aligned, irrespective of the digital printing position of each printing wheel 28.
  • One printing type projects out of the cavity and is in a printing position in which the type thereon can be printed on a copy sheet together with the text of the master 128 during rotation of printing cylinder 1.
  • a U-shaped arresting means On a shaft 33 mounted in the side walls of the cavity, a U-shaped arresting means is mounted for turning movement, and has an arresting bar 34 which is normally urged by a spring 35 to a position engaging a row of notches 36 so as to align the printing wheels 28. Upon operation of an electromagnet 32, arresting bar 34 is withdrawn from the notches 36 of the printing wheels 28 so that the same can be turned and set to desired printing positions.
  • Electromagnets 20 respectively operate control levers 21 and 22 which are mounted on pivots 24 and 23 and are biassed by springs 25 and 26 which are secured to fixed points 129 and 47 and urge control levers 22, 21 to the inoperative positions shown in FIG. 2.
  • the axially alternating control levers 21 and 22 are selectively moved to pawl 27 of the same order, and to release the coupling between pawl 27 and the teeth of drive shaft 40 until electromagnetic means 20 are again de-energized.
  • shaft 30 can be stepwise turned by the Geneva transmission 37 to 40 while some or all printing wheels 28 are uncoupled from the same and locked by the arresting bar 34.
  • a digital set of staggered cam means 42 is secured to shaft 30 and turns stepwise with the same.
  • Each cam means 42 is correlated with one of the digits from to 9, and cooperates with a corresponding digital interrogation switch 43, shown in FIG. 4 so that switches 43 are sequentially opened during each revolution of shaft 30 which takes place in ten steps.
  • a contact bar 16 is secured to the side walls of the cavity and carries a series of stationary contacts 17 arranged in an axially extending row, as shown in FIGS. 1 and 3.
  • the stationary contacts are respectively connected with the electromagnetic control means which are respectively connected to digital sets of key switches 48 which can be independently operated to select one of the digits from 0 to 9 in each set of ten key switches 48. While keys are shown only for the first and last key switch of each digital set, it will be understood that each key switch can be independently selected and operated.
  • the number of sets of key switches 48 corresponds to the number of electromagnetic means 20, and to the number of printing wheels 28.
  • FIG. 4 shows the arrangement only for three orders, but it will be understood that any number of orders can form the series of printing wheels 28, and that the same number of digital sets of key switches 48 will have to be provided for selection of the desired printing positions of each printing wheel.
  • an ordinal series of contacts 15 cooperates with the ordinal series of contacts 17.
  • the contacts 15 are mounted on a movable contact bridge 7 which is supported for turning movement by pivots 13 on lateral walls 11 and 12, as best seen in FIG. 1.
  • One leg of the U-shaped contact bridge 7 carries a pin 8 engaged by an angular lever 3 which is mounted on a pivot 2 on lateral wall 11 and is biassed by a spring 6 to abut a first stop 9 so that the Weight of contact bridge 7 moves the same to the position in which contacts 15 respectively abut contacts 17 for energizing all electromagnetic control means 20 simultaneously.
  • angular lever 3 is turned in clockwise direction as viewed in FIG.
  • an ordinal series of key switches 48 is provided, only three sets of key switches being shown for the sake of simplicity.
  • the ten interrogation switches 43 are respectively connected with the corresponding digital key switches of all sets.
  • One terminal of a voltage source is connected to all movable contacts 17 on contact bar 7 and also to a switch 46 which is operated by an actuator pin 45 on shaft 30, as shown in FIG. 3.
  • a relay winding 50 is connected in series with switch 46 and controls three relay switches 51, 52, 53 which are respectively connected with the other terminal of the voltage source, which is also connected with the interrogation switches 43.
  • a start switch 49 is connected in series with rela; winding 50 and in parallel with the holding contact 51 of the same.
  • the second relay contact 52 is connected in series with the electromagnet 32 by which the arresting means 34 is operated, as shown in FIG. 2.
  • the third relay contact 53 is connected in series with motor 31, see FIG. 3, by which shaft is stepwise rotated by means of the Geneva transmission 37 to together with the digital set of cam means 42 by which the interrogation switches 43, not shown in FIG. 1, are sequentially operated during each revolution of cam 30.
  • a delay device 54 is connected in series with motor 31 so that when relay 50 operates relay contacts 52 and 53, electromagnet 32 first operates arresting means 34 to release the printing wheels 28, whereupon rotation of shaft 39 by motor 31 is started.
  • each ordinal printing wheel 28 is to be set.
  • One key switch 48 of each digital set is actuated by the operator, and closed.
  • the keys of the key switches of each set are provided with indicia indicating the digits from 0 to 9, and as many sets of keys are provided as there are printing wheels. For example, forty printing wheels 28, and a corresponding number of sets of key switches 48, electromagnetic means 20, and contacts 15 and 17 may be provided.
  • Each electromagnetic means 20 is energized through a selected key switch 48 and an interrogation switch 43 closed by a cam 42 to operate the control levers 21 and 22 in the direction of the arrow B in FIG. 2 so that the coupling pawls 27 are turned by control levers 21 and 22 to a position disengaging the coupling teeth of shaft 30 and interrupting the coupling connection be tween the same and printing wheels 28.
  • the start switch 49 is now operated, relay 50 is energized through the closed switch 46, and relay contacts 51, 52, 53 close. Holding contact 51 bridges start switch 49 so that the same can be released by the operator. Relay contact 52 effects energization of electromagnet 32 which withdraws arresting means 34 from all printing wheels 28.
  • motor 31 which is a quickly stopping brake motor, is energized and stepwise drives shaft 30 through the Geneva transmission 37 to 40 so that the ten cam means 42 sequentially open the interrogation switches 43 whereby electromag netic means 20 are sequentially tie-energized and permit springs 25, 26 to sequentially turn control levers 21 and 22 to positions releasing the biassed couplings pawls 27 which immediately couple the respective correlated printing wheels with shaft 30. Therefore, the angular position of each coupled printing wheel 28 on shaft 30 will depend on the selection of the respective key switch 48 so that a line of types representing the digits selected by key switches 48 is formed. At the end of one revolution of shaft 30, the selected types representing the selected number will be in a printing position projecting from the periphery of the printing cylinder.
  • Printing cylinder 1 is rotated so that a copy sheet transported by the printing cylinder and by a counterpressure roller, not shown, is imprinted not only by the text of the master 12-8, but also by the selected series of types which are aligned in axial direction.
  • printing wheels 28 have been described to have ten digital positions, and ten printing types representing the digits from O to 9, it is apparent that any alpha numerical character may be used for a type on a printing wheel.
  • an ordinal set of digital printing wheels 82 is 7 mounted for rotation on a shaft 132 on a supporting frame 62 which is located outside of the printing cylinder 1.
  • Transporting rollers 59 are continuously rotated by drive means, not shown.
  • Transporting rollers 58 and 5 9 have shafts 63 and 64, shafts 63 being mounted for vertical movement with transporting rollers 58 in slots 60 in the lateral walls of the supporting frame 62.
  • Springs 55 connect shafts 63 and 64 to urge the rollers to a position engaging and transporting copy sheet 57 along table 66 until the leading edge of copy sheet 57 abuts the end portion of an angular stop lever 67 which is mounted for turning movement on a shaft 71 and holds the copy sheet in the illustrated position.
  • a spring 69 urges the armature '70 of an electromagnet 68 to a position in which stop lever 67 is operative, but when electromagnet 68 is energized, stop lever 67 is withdrawn to an inoperative position, and copy sheet 57 can be further transported by the transporting rollers 58, 59.
  • a switch 74 In the stop position of the copy sheet 57, a switch 74 is closed. Switch 74 controls an inking magnet 75 which, when energized, turns in the direction of the arrow H so that an inking means 80 including a roller passes over the printing types which are aligned in a row located opposite copy sheet 57.
  • Inking lever 80 is mounted for turning movement on a support 79 which also carries the shaft 132 of printing wheels 82.
  • inking lever 80 When inking lever 80 has been displaced to the angular position shown in chain lines in FIG. 5, it operates a switch 83 by which printing magnet 85 is energized.
  • Support 79 is pivotally connected with a forked armature portion 90 of printing magnet 85 and is biassed by spring 89 to turn about support shaft 78 to the illustrated position in which the printing wheels 82 are spaced from the copy sheet.
  • printing magnet 85 When printing magnet 85 is energized, support 79 turns about shaft 78 to a printing position in which the lowermost axial row of printing types engages copy sheet 57.
  • An indexable drive shaft 104 is driven through a onerevolution clutch, not shown, by a motor, not shown, and carries a digital set of earns 1 which are angularly staggered and axially spaced to sequentially engage a digital set of axially spaced interrogation switches 111, see also FIG. 6.
  • a gear 100 on shaft 104 meshes with a gear 101 secured to a shaft 102 which carries a drive cam 103 whose periphery has two parts symmetrical to one plane of symmetry.
  • Shaft 102 has a projecting cam portion and a recessed portion for operating a switch 105 which is connected in series with the interrogation switches 111, as shown in FIG. 6.
  • a cam follower lever 115 cooperates with cam 103 toward which it is biassed by spring 116, and is mounted on a shaft 114 for angular reciprocating movement.
  • the free end of cam follower lever 115 has a slot in which a pin 117 secured to a link means 120 is mounted.
  • Link means 120 carries a prismatic body 121 having vertical slots receiving the ends of elongated coupling members 112. Body 121 and link 1120 are guided by rollers 118 for straight reciprocating movement along a supporting surface 119.
  • Coupling pawls 123 are mounted in the vertical slots of body 121 for turning movement about the pivot 122 and are biassed by springs 124 to engage the upper notched edges of correlated coupling members 112 which are formed with recesses engaged by coupling pawls 123 in the illustrated position.
  • Each coupling member 112 has an end portion with a lower edge formed as a rack meshing with a correlated pinion 125 secured to one of the printing wheels 82.
  • a coupling member 112 with a rack is provided for each printing wheel 82 of the series so that each printing wheel 82 can be set to a selected angular position, as will be described hereinafter.
  • Each coupling member 112 co- 8 operates with a coupling pawl 123, an ordinal series of coupling pawls 123 being mounted in the body 121.
  • each electromagnetic control means 20 has a fork-shaped link pivotally connected with an arresting pawl means 108 which is turnable on a shaft 109 mounted on support 79.
  • Springs 113 act on the armatures of electromagnetic control means 106 and urge the same to a position in which arresting pawl means 108 engage notches in the upper edge of the end portion of the respective coupling member 112.
  • Ten notches are provided, corresponding to ten digital positions of the respective printing wheel 82.
  • a switch 92 is operated by support 79 and is closed in the printing position of the printing wheels 82, and opened in the illustrated position.
  • one terminal of a voltage source is connected to all electromagnetic control means 106, which correspond to the electromagnetic control means 20 of the embodiment of FIGS. 1 to 4.
  • Each electromagnetic control means is connected to a digital set of key switches 98, and the number of sets of key switches is the same as the number of printing wheels.
  • Ten interrogation switches 111 are respectively connected with the corresponding key switches of all ordinal sets of key switches 98.
  • the other terminal of the voltage source is connected by switch 105 to the interrogation switches 111.
  • the inking electromagnet 75 is connected in series with the RC network 76, 77 and the switch 74 which is closed by a copy sheet 57 in the stopped position shown in FIG. 5.
  • the printing magnet 85 which operates support 79 of the printing wheels 82, is connected in series with a delay device and a RC network 86, 87, and also with a switch 83 which is operated by the inking means after the same has inked the row of types of the printing wheels which is located in the printing position opposite the copy sheet 57.
  • Another switch 97 shown at the right of FIG. 5, is also operated by copy sheet 57 when the same have been transported out of the illustrated position after printing. Switch 97 is connected in series with the relay 93 which controls two relay contacts 94 and 95.
  • Switch 92 is also connected in series with relay 93 and switch 97, and is bridged by the holding contact 94 when relay 93 is energized.
  • Relay contact 95 is connected in series with the releasing magnet 68 by which stop lever 67 is moved to a position releasing the leading edge of copy sheet 57 so that the same can move on.
  • Control lever 73 is also connected with the fork-shaped armature portion 70 and is turnable about a shaft 72 to move shaft 63 with the respective transporting roller '58 away from copy sheet 57 so that a copy sheet 57 abutting stop lever 57 is not transported.
  • copy sheets 57 are imprinted by the text on the master 128, stripped off the printing cylinder, and transported by the first pair of transporting rollers 58, 59, and then by the driven transporting roller 59 of the second pair of transporting rollers until its leading edge abuts stop lever 67 in the position illustrated in FIG. 5. Since the upper transporting roller 58 of the second pair is held by lever 73 spaced from the respective lower transporting roller 59, copy sheet 57 is only lightly pushed against stop lever 67, and remains in the illustrated position while closing switch 74.
  • Switch 74 energizes the turnable inking magnet 75 over RC network '76, 77, so that inking lever 80 is turned to the position shown in chain lines and inks the lowermost row of types of the printing wheels 82 whereupon inking lever 80 closes switch 83.
  • spring 81 After this movement of inking lever 80 in the direction of the arrow H against the action of spring 81 which is secured to support 79 by a pin 84, spring 81 returns inking lever 80 to its initial position.
  • Closing of switch 83 by the inking lever 80 effects energizing of printing magnet through RC network 86, 8'7 and delay device 88 so that printing magnet 85 turns support 79 about shaft 78 against the action of spring 89 to a printing position in which the lowermost row of type faces engages the copy sheet 57 and prints a line of digits or characters on the same.
  • switch 92 is closed by support 79 and energizes relay 93 since switch 97 is not yet opened by copy sheet 57 which is held by the stop lever 67 in the illustrated printing position.
  • Relay 93 closes the holding contact 94 so that switch 92 is bridged when support 79 is returned by spring 90 to its initial inoperative position, and relay contact 95 energizes release magnet 68 which turns stop lever 67 to a position releasing the leading edge of copy sheet 57, while control lever 73 permits the spring biassed top roller 58 of the second pair of supporting rollers to move downward into full driving engagement with copy sheet 57 so that the same is transported and gripped by the third pair of transporting rollers 58, 59 until the leading edge of the transported copy sheet opens switch 97.
  • Switch 97 interrupts the circuit of relay 93 so that relay contacts 94 and 95 open again and the release magnet 68 is deenergized, permitting spring 69 to turn stop lever 67 to the operative stop position, and control lever 73 to raise top roller 58 of the second pair of transporting rollers so that the next copy sheet can be received from the first pair of transporting rollers 58, 59.
  • the setting of the printing wheels 82 to new selected angular positions representing a new number having several orders, each of which is printed by a digital printing wheel 82, is accomplished under the control of drive shaft 104 which is driven from a motor, not shown, through a one-revolution clutch 99 to turn one revolution, when a switch, not shown, is manually operated.
  • Gears 100 and 101 are designed so that drive cam 103 performs half a revolution with shaft cam 102 when drive shaft 104 and cams 110 thereon perform one revolution.
  • the circumferential cam projection on shaft 102 closes switch 105 which, as best seen in FIG. 6, is connected with all interrogation switches 111 which are sequentially closed by the ten cams 110. All electromagnetic control means 106 are energized through the segmentially closed interrogation switches 111, and through the single key switch 58 selectively closed in each digital set of key switches.
  • the energized electromagnetic control means 106 overcome springs 113 and turn all arresting means 108 to positions releasing the respective coupling members 112, and thereby the printing wheels 82 which can now be freely turned by the respective coupling members 12.
  • the first cam 110 is correlated with the digit and opens the respective interrogation switch 111 so that in all orders in which the 0 key switch 98 was selected and actuated, the respective electromagnetic control means 106 are de-energized so that the respective arresting 'means 108 are urged by the respective springs 113 to engage the respective recess in the respective coupling members 112 whereby the respective printing wheels 82 are locked in a position in which the zero types thereof are located opposite the copy sheet 57, ready for printing a 0 in the respective order.
  • drive cam 103 acts on cam follower means 115, 120 to move body 121 with all coupling pawls 123 in the direction of arrow L.
  • the arrested coupling members 112 cannot be displaced, and the respective pawls 123 move out of the recesses in the same, and slide along the same during the reciprocating stroke to the right of the cam follower means 115, 120.
  • the other coupling pawls 121 remain coupled with the respective coupling members 112 and move the same to the right in the direction of the arrow L so that the respective printing wheels 82 are turned due to the engagement of the rack portions of coupling members 112 with the respective pinions 125.
  • One cam 110 after the other engages and opens the correlated digital interrogation switch 111, so that electromagnetic control means 106 are de-energized by each operated interrogation switch which is connected to a selected and closed key switch 98.
  • Each de-energized electromagnetic control means 106 permits spring 113 to operate arresting means 108 to arrest coupling member 112, and thereby printing wheel 82 associated therewith in an angular position representing the digit selected by operation of the respective key switch 98 in the set of key switches correlated with the respective printing wheel 82.
  • all printing wheels 82 After one revolution of drive shaft 104 with cams 110, all printing wheels 82 are set to selected positions and arrested by arresting means 108 so that a printing operation can be started during which printing magnet presses the lowermost row of types representing the selected number against copy sheet 57.
  • drive cam 103 At the end of one revolution of the drive shaft 104, drive cam 103 has turned half a revolution, and the cam follower means 115, 120 are at the end of the reciprocating stroke to the right. Since the one revolution clutch 99 stops shaft 104 after one revolution, the cam follower means and the body 121 with coupling pawls 103 remain in the same position, while any desired number of copy sheets is imprinted with the respective selected number.
  • the onerevolution clutch 99 is again started to rotate shaft 104 one revolution so that drive cam 103 performs the second half of its revolution during which spring 116 turns the cam follower means 115, 120 to perform a reciprocating stroke toward the left, as viewed in FIG. 5.
  • all coupling pawls 123 are urged by the respective springs 124 into the coupling recesses in coupling members 112 so that at the end of the reciprocating stroke, all printing wheels 82 are returned to the zero position.
  • Arresting means 108 slides over the tapered backs of the ratchet teeth of coupling members 112 during the reciprocating stroke to the left.
  • switch remains open due to the shape of cam 102 so that the interrogation switches 111 and electromagnetic control means 106 are not energized.
  • Key controlled setting apparatus for printing wheels comprising, in combination, a series of printing wheels, each having a set of types, and being turnable between a set of printing positions; drive means including indexa-ble stepwise movable drive shaft means; a series of coupling means for connecting said drive shaft means with said printing wheels, respectively; a set of staggered cam means stepwise moved by said drive shaft means and moving along paths; and a control circuit including a series of electromagnetic means for operating said coupling means, respectively, a series of sets of key switches, and a set of interrogation switches located in said paths, respectively, and being sequentially actuated by said staggered cam means, respectively, during one revolution of said drive shaft means, said interrogation switches being connected with said key switches, respectively, of said sets of key switches so that when a selected key switch of any set of key switches is actuated, the respective correlated electromagnetic means operates the respective correlated coupling means upon actuation of the respective interrogation switch to couple said drive shaft means with the respective printing wheel so that the same is turned to
  • Key controlled setting apparatus as claimed in claim 1 in combination with a printing machine having means for transporting a copy sheet along a path, and printing means located in said path for printing on one part of said copy sheet; wherein said printing wheels are located along said path; and comprising means for operating said series of printing wheels to make an imprint on another part of said copy sheet.
  • said printing means comprising a printing cylinder .having a cavity in which said printing wheels, coupling means, cam means and electromagnetic means are located.
  • said drive shaft means support said printing wheels for rotation; said drive means including a motor for driving said drive shaft means; wherein said coupling means connect said drive shaft means with said printing wheels, respectively, and are operable by said electromagnetic means to disengage said printing wheels, respectively, and to engage the same with said drive shaft means in selected angular positions respectively correlated with different types.
  • each of said printing wheels has arresting recesses between said types; comprising an arresting means movable to and from an arresting position engaging said recesses and aligning the same and said types while blocking rotation of said printing wheels; comprising another electro-magnet for operating said arresting means; and means for energizing and de-energizing said other electromagnet and said motor so that said arresting means releases said printing wheels before said motor rotates the same, and moves to said arresting position when said motor has stopped so that said printing wheels remain in selected printing positions aligned for printing.
  • each coupling means includes a first coupling member connected with the respective printing wheel for movement between said printing positions, a second coupling member disengageably coupled with said first coupling member and moved by said cam follower means and arresting means operated by said electromagnetic means to block movement of said first coupling member in selected digital positions so that said second coupling member is disengaged from said first blocked coupling member While moving with said cam follower means.
  • said drive means include a motor driving said drive shaft means; and wherein said control circuit includes switch means controlling said motor and operated by said drive shaft means after one revolution for terminating rotation of said motor and drive shaft means so that the types corresponding to the selected key switches are aligned in a printing line at the end of one revolution.
  • Key controlled setting apparatus in combination with a printing machine having means for printing copy sheets; and comprising transporting means for transporting an imprinted copy sheet along a path; a supporting surface for said copy sheet along said path; a shaft supporting said printing wheels for rotation; a movable support for said shaft and the printing Wheels thereon; and printing magnet means for moving said support toward and away from said supporting surface and between a printing position in which said printing wheels print on said imprinted copy sheet, and an inoperative position in which said printing wheels can be set to selected printing positions.
  • Key control setting apparatus as claimed in claim 10 comprising transporting means having a transporting position for positively transporting said copy sheet, and an engaging position for frictionally engaging said copy sheet; stop means having a stop position for stopping said copy sheet and a releasing position releasing the same; and operating means for moving said transporting means and stop means simultaneously to said transporting and releasing positions, and to said engaging and stop positions respectively.
  • said operating means include an electromagnet having a spring biassed armature for urging said transporting means and stop means to said engaging and stop positions, respectively and being energizable for moving the same to said transporting and releasing positions; and wherein said control circuit includes switch means operated by said copy sheet to energize and deenergize said electromagnet.
  • Key control setting apparatus as claimed in claim 10 comprising inking means for said printing Wheels; inking magnet means for moving said inking means to and from an inking position; and wherein said control circuit includes an inking switch operated by said transported copy sheet and connected with said inking magnet for energizing the same.
  • control circuit includes a printing switch connected with said printing magnet means and operated by said inking means after movement to said inking position to energize said printing magnet means so that the inked printing wheels print on said copy sheet.
  • said drive shaft means includes a rotary shaft having a projecting portion; and wherein said control circuit includes a switch operated by said projecting portion to energize and de-energize said electromagnetic means, and connected in series with said interrogation switches and key switches.
  • said drive means include a one revolution clutch for rotating said drive shaft means and cam means one revolution, drive cam means rotated by said one revolution clutch, and cam follower means operating said coupling means for turning and setting said printing wheels.
  • each coupling means includes a coupling member connected with the respective printing wheel and having a digit-a1 set of arresting recesses; wherein said coupling means comprise spring biassed arresting means for engaging said arresting recesses, and respectively operated by said electromagnetic means to release said arresting recesses when said electromagnetic means are ener gized, so that said printing wheels are arrested in selected printing positions when said electromagnetic means are sequentially de-energized by said interrogating switches under the control of said cam means.
  • said drive shaft means include a rotary shaft having a projecting portion; wherein said control circuit includes a switch operated by said projecting portion to energize and de-energize said electromagnetic means and connected in series with said interrogation switches; and wherein said switch is closed before said interrogation switches are opened by said cam means, and again opened before said interrogation switches are again closed by said cam means.
  • said drive means include means for rotating said drive cam means at half the speed of said one revolution clutch; and wherein said cam follower means move in a working stroke in one direction for setting said printing wheels during half a revolution of said drive cam means, and in a return stroke during the second half revolution of the same for clearing said printing wheels; and wherein said one revolution clutch is once started for setting said printing wheels, and a second time started for clearing said printing wheels.
  • Key controlled setting apparatus for printing wheels comprising, in combination, a series of printing wheels, each having a set of types, and being turnable between a set of printing positions; drive means including drive shaft means, drive cam means rotated by said drive shaft means, and cam follower means cooperating with said drive cam means; a series of coupling means for connecting said drive means with said printing wheels, respectively; a set of cam means rotated by said drive means; and a control circuit including a series of electromagnetic means for operating said coupling means, respectively, a series of sets of key switches, and a set of interrogation switches sequentially actuated by said cam means, respectively, during one revolution of said set of cam means and connected with said key switches, respectively, of said sets of key switches so that when a selected key switch of any set of key switches is actuated, the respective correlated electromagnetic means operates the respective correlated coupling means upon actuation of the respective interrogation switch to couple said drive means with the respective printing wheel so that the same turns to a printing position corresponding to the selected key switch; and where
  • Key controlled setting apparatus for printing wheels comprising, in combination, a series of printing wheels, each having a set of types, and being turnable between a set of printing positions; drive means including a drive shaft supporting said printing wheels for rotation, a motor, and a Geneva transmission connecting said motor with said drive shaft so that the same is step-wise turned between digital positions; a series of coupling means for connecting said drive shaft with said printing wheels, re-
  • said drive shaft transmits stepwise movement to said coupling means and printing wheels so that the same turn between said printing positions; a set of cam means rotated by said drive means; a control circuit including a series of electromagnetic means for operating said coupling means, respectively, a series of sets of key switches, and a set of interrogation switches sequentially actuated by said cam means, respectively, during one revolution of said set of cam means and connected with said key switches, respectively, of said sets of key switches so that when a selected key switch of any set of key switches is actuated, the respective correlated electromagnetic means operates the respective correlated coupling means upon actuation of the respective interrogation switch to couple said drive means with the respective printing wheel so that the same turns to a printing position corresponding to the selected key switch; and a printing cylinder having a cavity in which said motor, Geneva mechanism, drive shaft, printing wheels, coupling means, cam means, and electromagnetic means are located.
  • control circuit is connected with said motor, and includes a start switch for starting said motor, relay means including a holding contact for said motor, and another switch operable to disconnect said relay means; and wherein said drive shaft means has a projection for operating said other switch at the end of one revolution.
  • Key controlled setting apparatus as claimed in claim 22 including arresting means biassed for arresting said printing wheels in said printing positions, respectively, in which said types are aligned in axial rows; wherein said control circuit includes another electromagnet for moving said arresting means to a releasing position, and being energized by operation of said start switch, and being deenergized by said other switch so that said arresting means arrests said printing wheels.
  • each coupling means includes a biassed coupling pawl mounted on the respective printing wheel and a set of coupling teeth on said drive shaft for coupling said drive shaft with said printing wheels in said printing positions of the same, respectively.
  • each electromagnetic means includes an electromagnetic and a control lever operated by said electromagnet to move said biassed coupling pawl to a position releasing said coupling teeth of said drive shaft; comprising a series of contacts connected with said electromagnets, respectively, and mounted on said printing cylinder; a fixed support; and a contact member mounted on said fixed support for movement between a retracted position and an operative position, and including a series of contacts respectively engaging said contacts on said printing cylinder in said operative position for simultaneously energizing all said electromagnetic means in an initial position of said printing cylinder.

Landscapes

  • Rotary Presses (AREA)
  • Common Mechanisms (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
US809487A 1968-03-25 1969-03-20 Key controlled setting apparatus for printing wheels in rotary duplicators Expired - Lifetime US3616749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681761035 DE1761035A1 (de) 1968-03-25 1968-03-25 Rotationsvervielfaeltiger zum ganzseitigen,zeilen- bzw.abschnittweisen Abdrucken von Druckformen auf Karten,Bogen od.dgl.

Publications (1)

Publication Number Publication Date
US3616749A true US3616749A (en) 1971-11-02

Family

ID=5696352

Family Applications (1)

Application Number Title Priority Date Filing Date
US809487A Expired - Lifetime US3616749A (en) 1968-03-25 1969-03-20 Key controlled setting apparatus for printing wheels in rotary duplicators

Country Status (7)

Country Link
US (1) US3616749A (enrdf_load_stackoverflow)
JP (1) JPS4914887B1 (enrdf_load_stackoverflow)
CH (1) CH480185A (enrdf_load_stackoverflow)
DE (1) DE1761035A1 (enrdf_load_stackoverflow)
ES (1) ES365058A1 (enrdf_load_stackoverflow)
FR (1) FR2004637A1 (enrdf_load_stackoverflow)
GB (1) GB1222307A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738261A (en) * 1970-04-27 1973-06-12 Ritzerfeld Gerhard Paint wheel setting arrangement in duplicating print drums with punch control means
US4129073A (en) * 1974-12-20 1978-12-12 Gerhard Ritzerfeld Duplicator machine with means for applying to the copies different markings
US4227454A (en) * 1978-08-22 1980-10-14 M. E. Cunningham, Company Hydraulically operated drum series printer
US4321867A (en) * 1981-01-14 1982-03-30 Pitney Bowes Inc. Electro-mechanical latch apparatus
WO1988004991A1 (en) * 1987-01-09 1988-07-14 Innovative Graphic Industries, Inc. Adapting offset duplicator for printing, scoring, perforating
US4936214A (en) * 1987-01-09 1990-06-26 Innovative Graphic Industries Apparatus for adapting offset duplicator machines to accomodate numbering, printing, scoring, perforating and like device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132183U (enrdf_load_stackoverflow) * 1976-04-03 1977-10-07

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738261A (en) * 1970-04-27 1973-06-12 Ritzerfeld Gerhard Paint wheel setting arrangement in duplicating print drums with punch control means
US4129073A (en) * 1974-12-20 1978-12-12 Gerhard Ritzerfeld Duplicator machine with means for applying to the copies different markings
US4227454A (en) * 1978-08-22 1980-10-14 M. E. Cunningham, Company Hydraulically operated drum series printer
US4321867A (en) * 1981-01-14 1982-03-30 Pitney Bowes Inc. Electro-mechanical latch apparatus
WO1988004991A1 (en) * 1987-01-09 1988-07-14 Innovative Graphic Industries, Inc. Adapting offset duplicator for printing, scoring, perforating
US4936214A (en) * 1987-01-09 1990-06-26 Innovative Graphic Industries Apparatus for adapting offset duplicator machines to accomodate numbering, printing, scoring, perforating and like device

Also Published As

Publication number Publication date
DE1761035A1 (de) 1971-03-11
GB1222307A (en) 1971-02-10
CH480185A (de) 1969-10-31
ES365058A1 (es) 1971-02-16
FR2004637A1 (enrdf_load_stackoverflow) 1969-11-28
JPS4914887B1 (enrdf_load_stackoverflow) 1974-04-11

Similar Documents

Publication Publication Date Title
GB1107395A (en) Printing method and rotary duplicator for use therein
US3616749A (en) Key controlled setting apparatus for printing wheels in rotary duplicators
US3146705A (en) Rotary offset printing machine for a movable printing form
US3412676A (en) Automated control system and apparatus for offset duplicating machine
US3527164A (en) Proofing control system for a multiple couple printing press
US3585928A (en) Printing plate making machine
US1983247A (en) R n saxby
US3669016A (en) Selective printer including settable,resiliently driven type wheels
US3426676A (en) Decimal point or comma printing means in multi-cipher digital printers
US1863098A (en) Apparatus for computing statistical data
US3238868A (en) Cam controlled rotary printing machine
US3464349A (en) Line printing and recording method and apparatus
US3946666A (en) Comma printing mechanism
US3245367A (en) Printing machine for printing on different kinds of copy sheets
US3875859A (en) High speed printer
US3744614A (en) Rotating mechanism
US3039385A (en) Printing apparatus
US3998312A (en) Printing or stamping device
US3233538A (en) Printing and duplicating machine
US3242854A (en) Program controlled selective printing machine
US3530793A (en) Method and apparatus for printing and recording on a card
US3420163A (en) Numbering arrangement for selective printing machines
US2770186A (en) Plate sensing means in address printing machines
US3167003A (en) Multiple field printing mechanism
US3167007A (en) Throw-in and throw-off control device for multicolor printing presses