US2683410A - Selective wire printing machine - Google Patents

Selective wire printing machine Download PDF

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Publication number
US2683410A
US2683410A US80136A US8013649A US2683410A US 2683410 A US2683410 A US 2683410A US 80136 A US80136 A US 80136A US 8013649 A US8013649 A US 8013649A US 2683410 A US2683410 A US 2683410A
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Prior art keywords
printing
print
devices
wires
elements
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US80136A
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English (en)
Inventor
Wockenfuss William
Herman A Speh
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Unisys Corp
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Burroughs Corp
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Priority to DENDAT1071719D priority Critical patent/DE1071719B/de
Application filed by Burroughs Corp filed Critical Burroughs Corp
Priority to US80136A priority patent/US2683410A/en
Priority to GB5445/50A priority patent/GB692096A/en
Priority to GB10008/52A priority patent/GB692137A/en
Priority to FR1066884D priority patent/FR1066884A/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/245—Print head assemblies line printer type

Definitions

  • This invention relates to improvements in printing machines and has particular reference to a machine wherein one or more print heads are employed, each comprising a multiplicity of printing elements adapted for selective operation in various combinations to form different characters.
  • An object of the invention is to provide an improved and practical construction of a printing machine in which a plurality of print heads of the type referred to are assembled into groups each carried by an individually mounted panel which also supports the selectively operable controls for the printing elements of the various heads on said panel.
  • Another object is to cyclically move the printing elements of a head to and from print and non-print positions and to control said movements by means of retaining devices for said elements which are rendered ineffective by one of the movements and are then selectively maintained ineffective during a printing cycle.
  • Another object resides in the provision of an improved printing machine wherein a group of printing elements are operable in various combinations to form different characters, and to provide electromagnetic devices which cooperate with said printing elements and which are selectively operable to identify by their energization the combination of printing elements required to print any one of said characters.
  • Another object is to employ a movement of a controlled element to close the air gap of an armature of an electromagnetic device which controls said element, and to thereafter energize said device to maintain its armature in closing position.
  • Fig. i is a fragmentary front elevation of a printing machine constructed in accordance with the invention.
  • Fig. 2 is a section taken substantially on the line 2-2 of Fig. 1 and illustrating a complete panel or print section on which is mounted six print heads, the character forming elements of each head and the individual controls for said elements, there being also illustrated in said figure a portion of the common mechanism for cyclically controlling the print heads of all of the print sections;
  • Fig. 3 is an enlarged section on the line 33 of Fig. 2;
  • Fig. 4 is an enlarged fragmentary elevation, partly in section, of the lower portion of one of the panels or print section illustrating the retaining or latching devices for two of the printing or character forming elements of a print head and showing said devices in their normal operative condition in which said printing elements are retained in a non-print position;
  • Fig. 5 is a fragmentary view similar to Fig. 4 illustrating the position assumed by a latching device of one of the printing elements upon return of the latter to a non-print position under the control of a restoring bail which forms a part of the cyclically operating means that controls the movements of the printing elements to and from print and non-print positions;
  • Fig. 6 is a view similar to Figs. 4 and 5 showing two printing elements in their advanced or print positions, with the latching devices for said elements maintained in their inoperative positions by the energization of the electromagnetic devices associated therewith;
  • Fig. 6a is an enlarged fragmentary elevation of a modified form of printing element and its associated electromagnetic device
  • Fig. '7 is a bottom plan view of the print section or panel shown in Fig. 6;
  • Figs. 8 and 9 combine to illustrate diagrammatically the control circuits for one of the print heads by which selection of the printing elements constituting said head to form any particular character is accomplished in accordance with the analysis of a punched card or similar statistical record;
  • Fig. 10 is a diagrammatic view illustrating a circuit for controlling the elimination of printing of zeros to the left of a significant figure
  • Fig. 11 is a diagrammatic view illustrating a timing chart for the machine
  • Fig. 12 is a greatly enlarged view of the type of character to be printed.
  • Fig. 13 is a similar View showing diagrammatically, one of the print heads with the various printing elements comprising said head indicated by numerals.
  • Figs. 1 to 7 structurally show the machine as comprising the side plates l5 and 16 connected by the tie rods H, and between these plates are suitably supported a plurality of individual print sections, generally indicated at H8, in the form of substantially rectangular and narrow panels which are vertically arranged in abutting relation.
  • the front of each panel is constituted by a block 58 (Fig.
  • each block contains six print heads 29 arranged in horizontal pairs so as to provide for three lines of printing, but it will be understood that the number of heads and their line arrangement is arbitrary.
  • each panel has extending therethrough six groups of movable printing elements til, each group being conventionally represented in Fig. 2 by two dotted lines.
  • Said printelements are in the form of wires of very small diameter and, within the block 59, they extend through guide tubes 3
  • the present construction may also employ thirty-five printing wires to constitute single print head, and the slight reciprocating movements of these wires between non-print print positions are selectively controlled in various combinations, and in accordance with the analysis of a record such as a tabulating card, to form different characters which are impressed upon a sheet 33 movable over a platen in any preferred manner.
  • the selection of certain of the printing wires of a group results in the advancement of those wires from non print to print positions, but it is within the scope of the invention to reverse the above action by arresting the selected wires in non-print position and permitting those that are not selected to move to print position to form any particular character, as illustrated in Fig. 6a which will later be described.
  • each group of wires to has assigned thereto a supporting unit, generally indicated at 35, in vertical alignment with the five other similar units constituting the panel.
  • Each of said units comprises upper and lower pairs of spaced supporting bars 3% (Fig. 3) the inner opposed edges of which converge rearwardly so as to be inclined. with respect to the horizontal for a purpose which will later appear, and joining said bars are a plurality of vertically disposed and equi-distantly spaced guide plates i? for the rear portions of the printing elements till.
  • Said rear portions are of different lengths, as indicated by the stepped formation of the two dot and dash lines in Fig.
  • next two long lines between the second and third steps in Fig. 2 and extending through the fourth and fifth plates 3? represent the two second upperniost and the two second lowermost printing wires in the two outer columns in Fig. 3, while the next two short lines in Fig. 2 represent the sec ond uppermost and second lowermost wires in the intermediate row of Fig. 3, and so on throughout the length of the panel to the thirtyfifth wire which is the longest and is the midd e one in said intermediate row controlled by electromagnetic device 38 shown at the Fig. 2.
  • Figs. 4 to 6 portions of the printing wires 30 which project from the rear ends of the guide tubes 31 where the latter are secured in the plate 32 of each panel, are rigidly fastened to the forward ends of rods 4! which thereby become parts of the printing elements.
  • Said rods are slidable in the guide plate 42 and each rod has an enlargement 43 thereon forming an abutment for one end of an expansion spring 44 coiled on said rod and engaging at its other end the rigid wall 39.
  • Said spring forms part of a mechanism for cyclically controlling the movements of the printing element between non-print and print positions and acts to constantly urge said element toward its print position when the spring is under compression.
  • fragmentarily shown in Figs. 4 and 6 is the bottom element in the intermediate row of Fig. 3; the third rod shown is the next to the lowermost element in the left hand row of the latter figure; the fourth rod is the second lowermost element in said intermediate row; the remaining rods (not shown in Figs. 4 and 6) alternate in the same manner and progressively increase in length until they reach the horizontal centerline of the supporting unit 35; and for the upper half of the unit, the rods are similarly arranged beginning with the two shortest rods at the top.
  • Figs. 4 and 6 show the electromagnetic devices 38 for controlling the two lowermost rods 4! and the printing wires 39 of which they form a part. and since said control is the same in each instance a description of the operation of one of the printing elements will suiiice.
  • Each device 38 comprises a substantially U-shaped plate 45 secured at its intermediate portion between the bars 36 by means of screws 46, with one leg of the plate forming the core of said device while the other leg provides a pivotal support for the armature 41 which constitutes a latch for its associated printing element whereby to control its movement.
  • a coil spring 48 connects one end of the armature 41 to the lower portion of the plate t5 and acts to normally urge said armature to its latching or operative position with its air gap open, and to restore said armature to such position upon deenergiza-tion of the coil of the magnet.
  • a shoulder 49 on the armature latch engages a stop collar 50 on the rod ll to prevent advancement of the printing element to print position under the infiuence of its spring is which is now compressed.
  • an armature actuating collar 5! thereon is slightly spaced from a second shoulder 52 on the latch 4'2.
  • the springs A l form part of the mechanism for controlling the cyclic operation of the printing elements, their action being to advance said elements to print positions which is immediately followed by the de-ener gization of all devices 38, as will later appear.
  • the bail dwells during analysis of a record card and until selected devices 38 are energized to retain their latches in inoperative position, whereupon the bail again advances to permit expansion of the springs 44.
  • the initial impetus of said springs disengages the collars from the shoulders 52 of the armature latches the springs 38 of those latches which are not held in closed position because of the non-energized condition of their magnets will immediately restore such latches to their operative position where they will be engaged by the collars 5E1 of those printing elements which are not to be further advanced toward printing positions.
  • each bail is provided at its upper and lower ends with recessed heads 54 slidable in the blocks 24 of its panel, and engageable with each head is a bell crank 55.
  • Each arm freely engages in a recessed end of one of the bell cranks 55 to impart thereto an oscillatory movement which causes the reciprocation of the associated bail 53.
  • a source of power (not shown) is geared at 59 (Fig. 1) to a vertically extending shaft 56 supported by the side plate l5.
  • couples the shaft 69 to a stub shaft 62 journaled in the late l5 and the lower end of said shaft 60 is similarly connected to a stub shaft 63 (Fig. 2).
  • Said shafts 52, 63 mount the complementary cams B l, 85 each ongaged by different arms of the followers 56 connected by links El to the crank arms 98 secured on the shafts 56 and :5! so as to impart simultaneous rocking movement thereto and thus reciprocate the various bails in unison.
  • Figs. 8 and 9 illustrate the circuits that selectively control the thirty-five electromagnetic devices 38 allotted to the printing elements of one print head, the circuits for the remaining print heads being duplicates of those shown.
  • Devices 38 are selectable for energization in various combinations and in accordance with any desired code such as the two-hole combin-ational code for alphabetical characters disclosed in the aforementioned copending application, wherein twelve index point positions are provided in each column of a card. The first three of said positions to be sensed for an alphabetical character in each card column are designated in Fig.
  • the character 0, whether it is employed to designate the letter or a zero, is formed by the energiza-tion of the same group of devices 38 but, as will be seen in the course of the description, the shection of said group for the printing of a zero is accomplished difierently for the letter.
  • the coils of said devices each have one terminal thereof joined to a common bus bar 69 connected to a conductor 10, and the other terminal thereof to an individual conductor 1 l, and said conductor is connected to a bus 12 to which all similar conductors of the various print heads are joined.
  • a record card feed mechanism (not shown) of any desired construction successively feeds the cards to a sensing device conventionally illustrated as comprising the contact roll l3 and a series of brushes 14, one for each card column, which progressively sense punched index points in the card columns as the card is fed between the roll and brushes, and a distributor 75 operates in synchronism with the feed of the cards so that the wiper thereof will successively engage its twelve contacts simultaneously with the sensing of the corresponding index points in the card columns. all said contacts being multipled to the other print heads.
  • each column of the record card Assigned to the index point positions #12, #11 and #0 of each column of the record card are the three zoning thyratrons '55, ll and '18 of standard construction which have the characteristic of remaining conductive, once they are fired, until the voltage is removed from the plate elements thereof.
  • the plate elements of said tubes 16, ll and 18 are connected to associated zoning relays 19, 8d and 81, and the firing of any one of said tubes by the sensing of a hole at a zoning index point position in the card simultaneously with the engagement of the wiper of the distributor 75 with a contact corresponding to said point, determines the zone of the alphabetical character to be printed.
  • a fourth zoning relay 82 is assigned to the printing of the numerals 1 to 9, but if either one of the tube ll or T8 is fired, a relay 33 multipled to the c ode elements of said tubes is energized an: by opening its back contact M, will disconnect relay 82 from the power supply 85 (Fig. 8).
  • relay 82 will be energized to close its group of cont. l to 8 shown at the right of Fig. 9 to await the sensing of a hole in the card column designating the particular numeral to be printed.
  • the second hole of the two-hole combination in a card column is then sensed by its brush it and, through the distributor 15, this results in the firing of one of the nine thyratrons 86 to 94 identified by the sensed hole and the establishment of circuits thr gh one of said set of alphabetical contacts in the selected zone to the group of devices Bil which are to control the particular alphabetical character to be printed.
  • the letter A is to be printed and in order to better follow the circuits for the various devices 38 which are to be energized, the conductors t5 acsaci leading from the contact A controlled by the relay I9 are indicated by heavier lines, and rectifiers 96 are interjected in all circuit groups at points where it is desired to prevent the shunting effect of unrelated circuit groups which may have connection to the same conductor 'II.
  • the letter A when printed, takes the form shown in Fig. 12 and, by reference to Fig.
  • the printing elements 30 of a head are diagrammatically designated by the numerals l to 35, it will be seen that the elements to be actuated, and consequently the devices 38 (also numbered 1 to 35 on the bus bar 69) to be energized in order to print said letter, are identified in Fig. 13 by the eighteen numerals 2, 3, 4, 6, 10, 11, 15, 16, 17, 18, 19, 20, 21, 25, 26, 30, 31 and 35.
  • the contact A is connected by the conductors 95 to the eighteen conductors 'li through which the circuits of the selected electromagnetic devices 38 will be energized.
  • the contact for the numeral 1 controlled by the relay 82 has three conductors leading therefrom which are connected to seven conductors ll joined to a corresponding number of devices 38 identified in Fig. 13 and on the bus bar 69 by the numerals 3, 8, 13, 18, 23, 28 and 33.
  • the three zoning thyratrons 16 to 18 and the nine numeric Thyratrons 86 to 94 are non-conductive clue to the application of a negative bias from the power source 85 through the bridge network of each tube to the grid thereof and, upon closure of the contact of holding cam cl, positive voltage is applied to the plate elements of the tubes 16 to is from the source 85 over the conductor 91, through the contact of said cam, and the conductor 98 connected to the bus 99 common to all the print heads.
  • the brush 14 now starts to successively sense the index point positions #12, #11 and and, simultaneously therewith, the wiper of the distributor I successively engages contacts corresponding to said points.
  • the card being analyzed now passes its #11 and #0 index points under the brush it but, since no hole is punched at either or" said points, the tubes '5? and T8 are not fired and, consequently, the other two sets of alphabetical zone contacts of relays 86 and BI remain open.
  • the numeric tube holding cam 02 is operated to close its contact to thereby prepare a holding circuit for any one of the subsequently fired numerical tubes 35 to 94, said circuit extending from the positive terminal of source 85 through the contact of cam 02, and the conductor [U6 connected to the bus Itil to which all similar conductors of the circuits for the remaining print heads are joined, said conductor [06 being connected through a resistance to the plate element of each of said numeric tubes.
  • Said cam 02 maintains its contact closed throughout the sensing of all nine numerical index points, as indicated in Fig. 11, and opens said contact directly after the print bail 53 has started its advance.
  • the wiper of distributor '55 When hole #1 is sensed in the card, the wiper of distributor '55 also engages its #1 contact, thereby connecting zero potential from the source 85 over the conductors H30 and Its to one midpoint of the bridge network of tube 8t, while the other midpoint of said network is connected to said potential over the conductors I92 and Its, the roll '13 and brush it, and conductors t5 and I99, thus raising the grid voltage of said tube to zero and causing the same to fire.
  • the tube is maintained conductive from the intermediate terminal of source 85 through the winding of relay IIS, the tube 86 and its holding resistor, the common conductor E06, and the contact of cam c2 to the positive terminal of said source 85.
  • Relay I i3 is energized by the current flowing from the plate of said tube 86, for a purpose to later appear in connection with the elimination of zeros to the left of a significant figure.
  • Brush I4 now continues to sense the remaining numerical index point positions and upon the sensing of the last or #9 position, the print cam 04 closes to establish circuits from the positive terminal of the source 85 for the energization of the eighteen previously mentioned electromagnetic devices 33 whose associated printing elements 35) form the letter A, said circuits extending from the positive terminal of source 85 over the conductor 97, the contact of cam c t, conductor It and bus es, the windings of the eighteen devices 33, the conductors H connected to said windings, the conductors 95, the contact A of the zoning relay 19, the tube 86 and through the winding of relay II! to the intermediate terminal of the source 85.
  • All of said devices 33 now energize to retain their armature latches 41 in the position of Fig. 5, as previously described, to thus permit the respective printing elements to be advanced to the position shown in Fig. 6.
  • the print bail 53 dwells in the position shown in Fig. 5 and indicated in Fig. 11, and immediately after the energization of the electromagnets 38, said bail advances to permit the selected printing elements to move forward toprint position and then returns to the non-print position at the conclusion of the cycle to perform the previously described functions of restoring the printing elements and again actuating the armature latches il to close their air gaps preparatory to another selection in the next operating cycle.
  • an energizing circuit for the numerical zoning relay 82 will be established extending from the source 85 through the conductor 91, the contact of cam cl, conductor 98, winding of relay 82, back contact 84 of relay 83 and the contact of cam c3 to the intermediate terminal of the source 85.
  • relay 82 Upon energization of relay 82 in this circuit, its group of numerical contacts I to 8 are closed and await the sensing of the hole punched in one of the numerical index points in the card column. When this occurs, zero potential will be applied to the grid of one of the tubes 86 to 94, depending upon which hole is sensed, through the brush M and distributor 15 in a manner which will now be understood.
  • Said tube will then fire and will remain conductive through the contact of cam 02 and conduc tor 506, as previously described.
  • energizing circuits will be established for the electromagnetic devices 38 which are selected to effect the printing of the desired numerical character, said circuits extending, as previously described, through said cam 04 and over the conductors 'H which are connected to the numerical contact of relay 32 that extends to the plate element of the fired tube, and from thence the circuit extends through the Winding of relay I it to the intermediate terminal of the source 85.
  • Energization or" the selected group of devices 38 permits the associated printing elements to be advanced under the control of the print bail 53 to print the desired numeral.
  • Fig. 10 wherein there are fragmentarily shown four of the circuits illustrated in Figs. 8 and 9.
  • the first circuit unit to the left is set up, as in Fig. 8, for the printing of all zeros by connecting the plug H5 to the two lower jacks HQ so that a zero will be printed as above described, and it will be assumed that the three serially arranged circuit units to the right, and any required additional ones (not shown), are assigned to the columns of an amount field in each of the cards to be analyzed.
  • the first circuit unit of highest denominational order (the second to the right in Fig.
  • each printing wire 30 is secured to rod d Ia similar in all respects to the rod 4! except that it is made of magnetic material to act as a keeper and does not have the collar 5! formed thereon, as in the previously described embodiment. It does, however, have thereon a stop collar 50a, similar to the collar 59, which acts as a safety device to insure prevention of the advancement of the printing element when its U-shaped electromagnetic device 38a is energized to attract the rod 4Ia which has a loose fit in the guide plates 3'!
  • a printing machine a plurality of printing elements grouped to form different characters and selectively operable in various combinations each capable of printing one of said characters, electromagnetic devices cooperating with said printing elements and selectively operable to identify by their energization the combination of printing elements required to print any one of said characters, a circuit for said devices, said circuit including a plurality of contacts one for each different combination of said printing elements and arranged in groups, circuit connections between each contact and the electromanetic devices that identify the combination of printing elements individual to said contact, a relay for each of said groups of contacts for closing the same, means to energize one of said relays to close its contacts, means operable through one of said closed contacts and the circuit connections thereto for energizing the electromagnetic devices that identify the combination of printing elements individual to said contact, and means controlled by the last named electromagnetic devices upon energization thereof for im parting a single operation to said combination of printing elements to print the complete character identified by said devices.
  • a printing machine a plurality of printing elements grouped to form difierent characters and selectively operable in various combinations each capable of printing one of said characters, an electromagnetic device individual to and cooperating with each of said printing elements and selectively operable in groups to identify by their energization the combinations of printing elements required to print said characters, a circuit having a current source for said devices, said circuit including a plurality of contacts one for each different combination of said printing elements and arranged in groups, circuit connections between each contact and the electromagnetic devices that identify the combination of printing elements individual to said contact, a relay for each of said groups of contacts for closing the same, a plurality of electronic devices, means to activate one of the latter devices to energize one of said relays to close its contacts, means to activate another of said electronic devices to establish from said current source the circuit connections between one of the last named contacts and the electromagnetic devices that identify the combination oi printing elements individual to said contacts to thereby energize the last named electromagnetic devices, and means controlled by said last named electromagnetic devices upon energization thereof for imparting a
  • a plurality of print heads each including printing wires selectable in various combinations to form diiierent characters, advancing means to move selected. ones of said wires from non-print to print positions, a reciprocating bail member common to the wires of all said heads controlling said advancing means and also operable to return said selected wires to non-print positions, latching devices for said printing wires having normally operative positions relative thereto, means under control of said bail member when returning said wires to non-print positions for rendering ineflective said latching devices, means to selectively retain certain of said latching devices ineffective while said advancing means is operated, and means to restore to normal the remaining latching devices.
  • a plurality of print heads each including printing wires selectable in various combinations to form different characters, advancing means to move selected ones of said wires from non-print to print positions, a reciprocating bail member common to the wires of all said heads controlling said advancing means and also operable to return said selected wires to non-print positions, latching devices for said printing wires having normally operative positions relative thereto, means under con trol of said bail member when returning said wires to non-print positions for rendering ineffective said latching devices, electromagnetic de vices operable, when energized, to retain said latching devices ineffective while said advancing means is operating, record controlled means for selectively energizing certain of said electromagnetic devices, and means to restore to normal those latching devices whose electromagnetic devices remain de-energized.
  • a plurality of printing elements selectable in various combinations to form different characters and having print positions and primary and secondary non-print positions to which they are adapted to be moved, means to so move said printing elements, a latching device for each printing element having an operative position relative thereto when said element is in its primary non-print position and also having a release position, means controlled by said moving means when said printing element is being moved to its secondary non-print position to move said latching device to its release position, means to selectively retain certain of said latch devices in. their release positions, and means to restore the non-selected latching devices to their operative positions.
  • a plurality of printing elements selectable in various combinations fill to form different characters and having print positions and primary and secondary non-print positions to which they are adapted to be moved, means to so move said printing elements, a latching device for each printing element having an operative position relative thereto when said element is in its primary non-print position and also having a release position, spaced collars on each printing element, one of which is engageable with the associated latching device in the primary non-print position of said printing element, and the other collar engaging said latching device to move it to release position upon movement of said printing element to its secondary non-print position, an electromagnetic device for each latching device, means to selectively energize certain of said electromagnetic devices to retain their respective latching devices in release position, and means to restore the remaining latching devices to operative position for re-engagement with the first named collars of their associated printing elements.
  • a printing machine a plurality of print heads each including printing wires selectable in various combinations to form different characters, advancing means to move selected ones of said wires from non-print to print positions, a reciprocating bail member common to the wires of all said heads controlling said advancing means and also operable to return said selected wires to non-print positions, latching devices for said printing wires having normally operative positions relative thereto, means under control of said bail member vhen returning said wires to non-print positions for rendering ineiiective said latching devices, an electromagnetic device for each of said latching devices, record controlled means for selectively energizing certain of said electromagnetic devices to retain their latching devices ineffective while said advancing means is operated, and means to restore to normal those latching devices whose electromagnetic devices are not energized.
  • a framework a plurality of contiguously mounted panels supported therein and each comprising a plurality of print heads having a multiplicity of selectively operable printing elements, guides through which the elements of each head extend, supporting members for said guides, a latch device for each printing element mounted on one of said supporting members and having operative and inoperative positions relative to its printing element, means including an individual spring for each printing element and a common restoring bail for all the elements mounted in one of said panels to, respectively, move said elements from nonprint to print positions and to restore them to non-print positions, means to operate saicl restoring bail, an electromagnetic device for each latching device mounted on one of said supporting members and controlling the position of its latch device relative to the associated printing elements, and means to selectively energize certain or" said electromagnetic devices to render inoperative their respective latching devices.
  • a framework a plurality of contiguously mounted panels supported therein and each comprising a plurality of print heads having a multiplicity of selectively operable printing elements, guides through which the elements of each head extend, supporting members for said guides, a latch device for each printing element mounted on one of said supporting members and having operative and inoperative 17 positions relative to its printing element, means including an individual spring for each printing element and a common restoring bail for all the elements mounted in one of said panels to, re-
  • a circuit for each head including means to conductor through the first circuit for printing a zero by the circuit of lower denominational order.
  • a plurality of print heads each including a multiplicity of printing elements selectable in various combinations to form different characters including zeros
  • circuits for said print heads serially arranged in denominational order and each including means individual to each printing element for selecting the same for operation, means cooperating with said individual means to operate the selected printing elements to print a character, asource of supply for said circuits, a conductor connected to said source and common to said circuits and normallydisconnected therefrom, the circuit of highest denominational order being. entirely disconnected from said conductor, and means in one circuit perable upon the selectionof a significant figure to be printed to connect a'circuit of lower denominationol order to said common conductor through the first named circuit for printing a zero by the circuit of lower denominational order.
  • a print head comprising a plurality of printing wires selectable in various combinations each identifying a different character to be printed and movable between print and non-print positions, means to move to print position each selected combination of printing wires, means thereafter operable to restore the selected combination of wires to non-print position, a plurality of electromagnetic devices, one for each of said printing wires, cooperating with the first named moving means to render the same effective when said devicesare energized, and each device having an armature'means .operable to hold said armature open, means to close said armatures when said printing wires are restored to non-print position, and means thereupon operable to energize a groupof said electromagnetic devices corresponding to the combination .of printing wiresthat identifies a characterto be p n cd o ret n t arm s 0 sa qsrpurin 18 closed position to thereby render effective the first named moving means.
  • a print head comprising a plurality of printing wires selectable in various combinations each identifying a different character and movable between print and non-print positions, means to move to print position each selected combination of printing wires that identifies a character, means to then move the selected combination of wires to non-print position, latching devices, one for each of said printing wires, movable to non-latching position reiative to its wire, means to so move said latching devices, selectively operable means for retaining certain of said latching devices in their nonlatching position so that their associated printing wires will move to their print position under control of the first named moving means, and means operable before movement of the last named printing wires to print position to restore the remaining latching devices to latching position relative to their respective wires to retain the latter in non-print position while said last named wires are being moved to print position.
  • aprinthead comprising a plurality of printing wires selectable in various combinations each identifying a difierent character and movable between print and nonprint positions, means to move to print position each selected combination of printing wires that identifies a character, means to then move the selected combination of wires to non-print position, latching devices, one for each of said printing wires, movable to non-latching position relative to its wire, means to so move said latching devices, electromagnets, one for each printing wire, selectively operable to retain certain of said latching devices in their non-latching position so that certain of said printing wires will move to their print position under control of the first named moving means, and means operable before movement of said certain printing wires to print position'to restore the remaining latching devices to latching position relative to their respective wires to retain the latter in non-print position while said certain wires are being moved to print position.
  • a print head comprising a plurality of printing wires grouped to form different characters and selectively operable in various combinations each identifying one of said characters, means to move to print position each selected combination of printing wires that identifies a character, means to then move the selected combination of wires to non-print position, a latch device for each printing wire being moved to print position by said first named moving means, means to selectively operate said electromagnets, and means to restore non-selected latching devices to latching position prior to printing to allow printing by the wires associated with operated magnets.
  • a print head comprising a plurality of printing wires grouped to form difierent characters and selectively operable in various combinations each identifying one of said characters, means to move to print position each selected combination of printing wires that identifies a character, means to then move the selected combination of Wires to non-print position, a latch device for each printing wire having latching and non-latching positions relative to its wire, cooperating means on each printing wire and its latch device for actuating the latter to its non-latching position during movement of said printing wire to non-print position under control of the second named moving means, a plurality of electromagnets, one for each wire, selectively operated in accordance with said combinations for retaining the latch devices of certain wires in their non-latching position while their respective printing wires are being moved to print position by the first named moving means, record controiled means to selectively operate said electromagnets, and means to restore non-selected latching devices to latching position prior to printing to allow printing by the wires associated
  • a print head comprising a plurality of printing wires grouped to form difierent characters and selectively operable in various combinations each identifying one of said characters, means to move to print position each selected combination of printing wires that identifies a character, means to then move the selected combination or" wires to non-print position, a latch device for each printing wire having latching and non-latching positions relative to its wire, cooperating means on each printing wire and its latch device for actuating the latter to its non-latching position during movement of said printing wire to non-print position under control of the second named moving means, a plurality of electromagnets, one for each wire, selectively operated in accordance with said combinations for retaining the latch devices of certain wires in their non-latching position while their respective printing wires are being moved to print position by the first named moving means, means operable upon the latching devices of the remaining printing wires before movement of said certain wires toward their printing position to restore the remaining latching devices to latching position relative to their respective wires
  • a printing machine a plurality of printing elements movable in opposite directions to and away from printing position, a like plurality of control devices individually associated with respective ones of said printing elements and each movable to an effective position in which it stops movement of the respective printing element in a first one of said directions and to an ineffective position in which it does not interfere with such movement; of said printing element, means to return each of said control devices to said effective position, means common to all of said printing elements and their control devices and operable to move all of said printing elements in the opposite one of said directions and all of said control devices to their ineffective positions and subsequently to.
  • a printing machine a plurality of printing elements movable to. and away from printing position
  • a like plurality of control devices individually associated with respective ones of said printing elements and. each comprising an armature movable to an open. position in which it prevents movement of the respective printing element to printing position and to a closed position in which it permits movement of said printing element to printing position, electromagnetic means energizable to hold. said armature in closed position after movement to that position, and means. to return each of said armatures to said: open position, means common to all of said printing elements and operable to move all of said printing elements away from printing position and then. move to.
  • any printing elements not prevented by their armatures from moving to printing position said printing elements and the respective armatures having portions cooperating to move the armatures to closed position during a final portion of. the movement of the respective printing elements away from printing position by said common means and to permit return of the respec tive armatures to open position during an initial' portion of the movement of the printing elements toward printing position, and means to selectively energize said electromagnetic devices to hold the respective armatures in closed position while said common means operates to permit the remainder of said armatures to move to open position andto move the printing elements associated with the held armatures to move to printing position, the remainder of the printing elements being prevented from moving to printing position by those armatures which are returned to open position.
  • a printing machine a plurality of printing elements movable in opposite directions to and away from printing position
  • a like plurality of control devices individually associated with respective ones of said printing elements and each comprising an armature movable to an open position in which it stops movement of the respective printing element in a first one of said directions and to a closed position in which it does not interfere with such movement of said printing element, electromagnetic means energizable to hold said armature in closed position after movement to that position, and means to return each of said armatures to said open position
  • said second direction by said common means and to permit return of the respective armatures to open position during an initial portion of the movement of the printing 22 elements in said second

Landscapes

  • Printing Methods (AREA)
  • Impact Printers (AREA)
  • Facsimile Heads (AREA)
  • Credit Cards Or The Like (AREA)
US80136A 1949-03-08 1949-03-08 Selective wire printing machine Expired - Lifetime US2683410A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DENDAT1071719D DE1071719B (de) 1949-03-08 Elektromagnetische Vorrichtung zum Steuern der Druckdrähte einer z. B. durch Lochkarten, Lochstreifen od. ä. gesteuerten Drahtdruckmaschine
US80136A US2683410A (en) 1949-03-08 1949-03-08 Selective wire printing machine
GB5445/50A GB692096A (en) 1949-03-08 1950-03-03 Improvements in or relating to printing machines
GB10008/52A GB692137A (en) 1949-03-08 1950-03-03 Improvements in or relating to printing machines
FR1066884D FR1066884A (fr) 1949-03-08 1952-06-09 Perfectionnements aux appareils d'impression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80136A US2683410A (en) 1949-03-08 1949-03-08 Selective wire printing machine

Publications (1)

Publication Number Publication Date
US2683410A true US2683410A (en) 1954-07-13

Family

ID=22155480

Family Applications (1)

Application Number Title Priority Date Filing Date
US80136A Expired - Lifetime US2683410A (en) 1949-03-08 1949-03-08 Selective wire printing machine

Country Status (4)

Country Link
US (1) US2683410A (fr)
DE (1) DE1071719B (fr)
FR (1) FR1066884A (fr)
GB (2) GB692137A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785627A (en) * 1953-10-07 1957-03-19 Ibm Wire printer
US2802414A (en) * 1954-10-13 1957-08-13 Ibm Wire printer
US2829592A (en) * 1954-12-30 1958-04-08 Ibm Print actuating member control mechanism
US2873666A (en) * 1955-06-16 1959-02-17 Sperry Rand Corp High speed printer
US2889770A (en) * 1954-12-30 1959-06-09 Ibm Wire printer
US2909994A (en) * 1954-12-30 1959-10-27 Ibm Wire printer
US2917996A (en) * 1955-04-25 1959-12-22 Burroughs Corp Thermal printer
DE1075878B (de) * 1957-10-24 1960-02-18 Siemens Ag Kontaktmatrize fuer Lochkartenabfuehl-einrichtungen
US2938455A (en) * 1954-12-31 1960-05-31 Ibm Wire printer
US3584575A (en) * 1968-11-12 1971-06-15 Johann Distl Mosaic printing head and device for producing the same
US3715020A (en) * 1970-09-21 1973-02-06 Teletype Corp Wire recording and mechanism therefor
US4174182A (en) * 1977-04-15 1979-11-13 Triumph Werke Nurnberg A.G. Needle printing head

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028037A (en) * 1911-04-26 1912-05-28 Tideman M Lilleberg Character-forming machine.
US1124150A (en) * 1912-03-26 1915-01-05 Tideman M Lilleberg Character-forming machine.
DE523698C (de) * 1927-10-28 1933-08-21 Georg Krauss Schreibmaschine mit fuer die Bildung der Buchstaben verschiebbaren Nadeln
US2016682A (en) * 1932-09-24 1935-10-08 Ibm Printing mechanism
US2053243A (en) * 1933-12-08 1936-09-01 Ibm Tabulating machine
US2111122A (en) * 1936-12-22 1938-03-15 Ibm Printing mechanism
US2129065A (en) * 1937-07-06 1938-09-06 Joseph N Loop Apparatus for printing characters
US2248522A (en) * 1939-04-18 1941-07-08 Ivan W Conrad Automatic telegraphy
US2291970A (en) * 1939-09-27 1942-08-04 Ibm Printing mechanism
US2338173A (en) * 1941-10-25 1944-01-04 Ibm Printing mechanism
US2353083A (en) * 1942-08-27 1944-07-04 Ibm Recording machine
US2486985A (en) * 1945-10-10 1949-11-01 Ruderfer Martin Electrical printing type
US2524127A (en) * 1946-11-06 1950-10-03 Ibm Printing character forming wires

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028037A (en) * 1911-04-26 1912-05-28 Tideman M Lilleberg Character-forming machine.
US1124150A (en) * 1912-03-26 1915-01-05 Tideman M Lilleberg Character-forming machine.
DE523698C (de) * 1927-10-28 1933-08-21 Georg Krauss Schreibmaschine mit fuer die Bildung der Buchstaben verschiebbaren Nadeln
US2016682A (en) * 1932-09-24 1935-10-08 Ibm Printing mechanism
US2053243A (en) * 1933-12-08 1936-09-01 Ibm Tabulating machine
US2111122A (en) * 1936-12-22 1938-03-15 Ibm Printing mechanism
US2129065A (en) * 1937-07-06 1938-09-06 Joseph N Loop Apparatus for printing characters
US2248522A (en) * 1939-04-18 1941-07-08 Ivan W Conrad Automatic telegraphy
US2291970A (en) * 1939-09-27 1942-08-04 Ibm Printing mechanism
US2338173A (en) * 1941-10-25 1944-01-04 Ibm Printing mechanism
US2353083A (en) * 1942-08-27 1944-07-04 Ibm Recording machine
US2486985A (en) * 1945-10-10 1949-11-01 Ruderfer Martin Electrical printing type
US2524127A (en) * 1946-11-06 1950-10-03 Ibm Printing character forming wires

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785627A (en) * 1953-10-07 1957-03-19 Ibm Wire printer
US2802414A (en) * 1954-10-13 1957-08-13 Ibm Wire printer
US2829592A (en) * 1954-12-30 1958-04-08 Ibm Print actuating member control mechanism
US2889770A (en) * 1954-12-30 1959-06-09 Ibm Wire printer
US2909994A (en) * 1954-12-30 1959-10-27 Ibm Wire printer
US2938455A (en) * 1954-12-31 1960-05-31 Ibm Wire printer
US2917996A (en) * 1955-04-25 1959-12-22 Burroughs Corp Thermal printer
US2873666A (en) * 1955-06-16 1959-02-17 Sperry Rand Corp High speed printer
DE1075878B (de) * 1957-10-24 1960-02-18 Siemens Ag Kontaktmatrize fuer Lochkartenabfuehl-einrichtungen
US3584575A (en) * 1968-11-12 1971-06-15 Johann Distl Mosaic printing head and device for producing the same
US3715020A (en) * 1970-09-21 1973-02-06 Teletype Corp Wire recording and mechanism therefor
US4174182A (en) * 1977-04-15 1979-11-13 Triumph Werke Nurnberg A.G. Needle printing head

Also Published As

Publication number Publication date
GB692096A (en) 1953-05-27
FR1066884A (fr) 1954-06-10
GB692137A (en) 1953-05-27
DE1071719B (de) 1959-12-24

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