US3221863A - Printing arrangement for business machine - Google Patents

Printing arrangement for business machine Download PDF

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Publication number
US3221863A
US3221863A US257320A US25732063A US3221863A US 3221863 A US3221863 A US 3221863A US 257320 A US257320 A US 257320A US 25732063 A US25732063 A US 25732063A US 3221863 A US3221863 A US 3221863A
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Prior art keywords
type
printing
platen
selector
positions
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Expired - Lifetime
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US257320A
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English (en)
Inventor
Pietzsch Hans
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Digital Kienzle Computersysteme GmbH and Co KG
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Kienzle Apparate GmbH
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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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • B41J1/44—Carriers stationary for impression
    • B41J1/46—Types or dies fixed on wheel, drum, cylinder, or like carriers
    • 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers

Definitions

  • the present invention relates to a printing arrangement for business machines, and more particularly to a text printing arrangement for an accounting machine.
  • Business machines such as accounting machines use either a conventional typewriter mechanism, or rotary type wheels for printing text portions.
  • the type wheel arrangement has the advantage that the printing area can be arranged in the region of the printing area of the calculator printing means which print numbers.
  • the type wheel When all necessary characters and symbols are provided on a single type wheel, the type wheel is comparatively large and heavy, and does not permit very high printing speeds.
  • Another object of the present invention is to provide in a business machine a printing arrangement using a plurality of rotary type wheels which are automatically selected and operated when a single key is actuated by the operator.
  • Another object of the invention is to provide a printing arrangement in which upon actuation of a key, a continuously rotating type wheel is stopped in a corresponding printing position, and automatically moved by power drive means toward the platen to produce an imprint.
  • Another object of the present invention is to provide a printing arrangement composed of a control unit and a printing unit which are connected by simple transmission means so that the control unit and the printing unit can be mounted in the casing of a standard business machine wherever space is available.
  • Another object of the invention is to provide a printing arrangement in which the manual operation of a key results in the selection of a corresponding type, and in a printing operation with the corresponding type while the necessary power is provided by a motor.
  • a printing arrangement comprises two supports movable toward and away from a platen and respectively carrying type members each of which is movable between a plurality of printing positions.
  • the support and type members, and associated elements form a printing unit.
  • a set of keys including first and second groups of keys respectively representing the types of the two type members operates control means which connect the keys with the supports and type members. The arrangement is such that upon actuation of any key one of the supports is moved toward the platen with a respective type member in a position in which the type corresponding to the actuated key confronts the platen. In this manner, the type represented by the actuate-d key engages the platen.
  • the keys and associated elements form a control unit which is connected by a transmission means to the printing unit, so that the control unit and the printing unit can be arranged Wherever space is available in a standard business machine, such as an accounting machine.
  • two type wheels are mounted on two supporting levers, and are continuously rotated between printing positions in such a manner that one or the other type wheel is in a printing position.
  • selector means are actuated to stop the type wheel having the type corresponding to the actuated key in a printing position in which the respective type confronts the platen.
  • the key operation also initiates the operation of actuating means by the drive means so that the actuating means cause a movement of the support carrying the respective type wheel toward the platen.
  • a selector shaft is provided in the control unit, and can be stopped in a number of angularly spaced selector positions, depending on which key is selected and actuated.
  • the selector shaft is connected for rotation with both type wheels, so that the same are stopped when the selector shaft is stopped in the selected position.
  • One of the stopped type wheels is in the proper turned position to imprint the selected type of the selected key on a sheet of paper on the platen.
  • Clearing means are automatically operated by the power drive means to clear the selector mechanism of the control unit after each printing operation.
  • the actuator means operate both type wheel supports, and therefore it is necessary to sense by feeler means which type wheel has been stopped in a printing position, and to couple only this type wheel to the actuating means.
  • FIG. 1 is a cross sectional view taken on line I1 in FIG. 4 and illustrating the control unit of the preferred embodiment of the invention
  • FIG. la is a perspective View illustrating details of FIG. 1,
  • FIG. 2 is a cross sectional view taken on line IIII in FIG. 5 and illustrating the printing unit of one embodiment of the invention
  • FIG. 2a is a cross-sectional view of the printing unit in an operative printing position
  • FIG. 3 is a fragmentary cross sectional view taken on line IIIIII in FIG. 4 and illustrating a detail of the control unit;
  • FIG. 3a is a cross-sectional view of the embodiment of FIG. 3 in an operative position
  • FIG. 4 is a horizontal sectional view of the control unit, the view being expanded and distorted to more clearly show the parts of the apparatus;
  • FIG. 5 is a horizontal sectional view of the print ng unit, and constituting a somewhat distorted continuation of FIG. 4;
  • FIG. 6 is a perspective view illustrating a detail of the control unit.
  • FIG. 7 is a fragmentary horizontal sectional view illustrating a detail of the printing unit.
  • a key lever 11 of a conventional key-board forms a parallelogram linkage with a link 14 and a pair of transverse links 12 and 13.
  • Links 12 and 13 are respectively mounted for pivotal movement on frame parts 15 and 16 which are comb-shaped to guide all links 12 and 13 of all key levers of the key-board.
  • Forty-eight keys and key levers 11 may be provided, corresponding to forty-eight characters and symbols of a standard key-board, and the links 13 of all keys are aligned in a row and guided in slots of the comb-shaped support 16.
  • a spring 47 is secured to a fixed frame part and to each link 12 and urges each key to a normal position.
  • FIG. 4 illustrates the position of the key levers 11, and of related elements operated thereby, for the sake of clarity in a distorted and expanded position.
  • each selector member 28 carries a lever 30 turnable about a pin 28', and is located directly adjacent a member 29 which is secured to shaft 4.
  • a spring 31 connects each lever 36 with a corresponding member 29, and urges lever 30 against the peripheral surface of member 29, while the corresponding selector member 28 is turned in counterclockwise direction until the shoulder 32 of lever 30 abuts the corresponding radial projection of member 29.
  • a corresponding number of angularly spaced selector members 28, 27 is mounted on shaft 4 so that the transverse projections 27 are spaced from each other in circumferential direction the fortyeighth part of 360. Therefore, when a key lever 11 is depressed, and the corresponding linkage system including members 13, 20, 22, and 26 is actuated, the respective stop latch 26 will move down to cooperate with the respective selector member 28.
  • a pulley 1 to which two stepped wheels 2 and 3 are secured is freely turnable about shaft 4, and driven through a belt by a motor, not shown, to continuously rotate about shaft 4.
  • a toothed disc 5 is fixedly secured to shaft 4 and carries a turnable coupling pawl 6 cooperating with the stepped coupling 4 wheel 2 so that shaft 4 is rotated when coupling pawl 6 engages the stepped coupling wheel 2.
  • a pin 7 is secured to the toothed disc 5 and projects into a cutout 8' of a similar toothed disc 8 which is mounted on a hub of disc 5 for turning movement.
  • a spring 9 connects pin 7 with a projection of disc 8 so that disc 8 is connected by spring 9 and pin 7 for turning movement with disc 5.
  • a projecting pin 10 is secured to pawl 6 and is received in a cutout 8 of disc 8.
  • Spring 9 urges discs 5 and 8 to a relative angular position in which pin 10 is displaced by disc 8 to move to a position in which coupling pawl 6 engages the stepped coupling wheel 2.
  • the teeth on the peripheries of discs 5 and 8 face in opposite directions.
  • a spring 41 is connected to lever 38, and cooperates in the return of lever 38 to its normal position. Consequently, whenever shaft 4 is stopped by engagement between stop lever 35 and the fixed disc 5 on shaft 4, actuator shaft 42 will be angularly rocked by lever 38, the necessary power being supplied by the motor-driven drive means 1, 3.
  • control unit which is shown in FIG. 4.
  • the selector shaft 4 and the actuator shaft 42 project from the control unit of FIG. 4, and are connected to the printing unit shown in FIG. 5.
  • the control unit and the printing unit are connected by two rotary elements only, so that the control unit and the printing unit may be placed at selected locations of an accounting machine, or other business machine, and 'since each unit is small and compact, it is very easy to improve a standard accounting machine by adding the 'control unit and typing unit where sufi'icient space is found in the standard machine.
  • the printing unit which is shown in FIGS. 2 and 5, is controlled by selector shaft 4, and actuated by actuator shaft '42.
  • a gear pulley 48 is secured to the end of selector shaft 4, and drives the main shaft 51 of the printing unit through a toothed belt 49 and another gear pulley 50.
  • Gear pulleys 54 and 54' are respectively located adjacent positioning discs 52 and 52 and coupled to the same by axially extending coupling pins 53 and 53 so that each positioning disc 52 or 52' remains coupled to the corresponding gear pulley 54 or 54' when the same is shifted in axial direction along shaft 51.
  • Each support 58 and 58' carries at its outer end another gear pulley 56 and 56, respectively, which are respectively connected to printing wheels 57 and 57' for turning movement. Toothed belts 55 and 55' run over gear pulleys 54, 56 and 54', 56'.
  • Each type wheel 57 and 57' has twenty-four type faces and is turnable between twenty-four printing positions. In each printing position one type face with a type thereon confronts the platen 69, as best seen in FIG. 2. However, the type wheels 57 and 57' are in a relative angular position in which the type faces thereof are staggered half the pitch so that either a type face of type wheel 57, or a type face of type Wheel 57 fully confronts platen 69 in a printing position, while the respective other type wheel is in a staggered position in which a notch between two type faces confronts the platen 69.
  • cam 71, or cam 71' is effective to cause movement of the returnmg support away from the other support and to its normal inoperative position spaced along the platen the same distance as the respective other support.
  • link 13 When the selected key lever 11 is actuated by the operator, link 13 turns and shifts lever 22 through latch 26 in counterclockwise direction so that stop latch 26 is released and is turned by spring 25 to a stop position in which it is located in the circular path of the projection 27 of the respective associated selector member 28.
  • the angular position of selector member 28, 27 relative to the corresponding type wheel 57 is such that when stop lever 26 engages and stops the corresponding selector member 28, 27, the type and printing face corresponding to the selected key lever 11 is located opposite platen 69.
  • stop lever 26 stops the corresponding selector member 28, 27 in a predetermined angular position of shaft 4, the cam projection of the corresponding cam 29 acts on lever 39 to raise the same in clockwise direction so that shaft 33' is turned.
  • the plate 33 is engaged by all forty-eight levers 30, so that operation of any selected key lever will result in turning of shaft 33.
  • stop lever 35 will engage disc 5 which is fixed on shaft 4 and will lock selector shaft 4 in a predetermined angular position in which the respective printing face of type wheel 57 confronts the platen.
  • the other type wheel 57 is also stopped in a staggered position in which no printing face thereof directly confronts the platen. In this manner, the desired and selected type is ready for the printing operation.
  • Bridge member 61 is turned in clockwise direction as viewed in FIG. 2 to release both feeler members 63 and 63 so that the same sense the positions of the positioning discs 52 and 52.
  • the positioning disc 52 is in a position in which the feeler arm 63a abuts a projection
  • the positioning disc of printing wheel 57 is in a position in which the projection at the end of feeler arm 63a can enter the outer wider part of a recess in positioning disc 52. This is due to the fact that a printing face of type wheel 57 is in an operative printing position.
  • the feeler lever 63 associated with the correct type wheel 57 is thus permitted to make a turning movement whereby the coupling latch 56 on the respective support 58 couples actuators bridge 61 to the respective support 58. Further turning movement of actuator bridge 61 will effect turning movement of support 58 to which actuator bridge 61 is now coupled. Since the other feeler lever 63' was not permitted to turn, the other support 58 is not coupled to the actuator bridge 61.
  • either support with the respective type wheel can be moved to the central printing position, when selected.
  • the types are distributed over two type wheels, the operation in nevertheless completely automatic, and by actuation of a single key of a standard key-board, the type wheel having the desired type is stopped in the correct position, and automatically moved by power drive means to the printing position.
  • a printing arrangement comprising, in combination, a platen; two supports mounted for reciprocating movement independently of each other toward and away from said platen; two type members, each type member having a group of types and being mounted on one of said supports, respectively, for movement between a plurality r of printing positions in which different types thereof confront said platen; first means for moving one of said supports, and second means for moving the other support with the respective type member; a set of keys including first and second groups of keys respectively representing the types of said type members; and means connecting said first group of keys with said first means, and connecting the other group of keys with said second means so that upon actuation of any key, one of said supports is moved toward said platen with the respective type member in a position in which the type corresponding to the actuated key confronts said platen until the type represented by the actuated key and moving with said one support produces a printing impact on said platen.
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for reciprocating movement independently of each other toward and away from said platen and having normal inoperative positions spaced in one direction from said platen, and spaced from each other and from said printing area in a direction transverse to said one direction; means for moving in said transverse direction each of said supports so that the support moves to a position of readiness located opposite said printing area; two type members, each type member having a group of types and being mounted on one of said supports, respectively, for movement between a plurality of printing positions in which different types thereof confront said platen; first means for moving one of said supports, and second means for moving the other support with the respective type member from said position of readiness in a printing stroke in said one direction toward said area so that said type members are spaced from each other in said one direction; a set of keys including first and second groups of keys respectively representing the types of said type members; and means connecting said first group of keys with said first means and with the respective type member, and connecting the other group of keys with said second means
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for reciprocating turning movement independently of each other toward and away from said platen and having normal inoperative positions spaced in one direction from said platen, and spaced equal distances along said platen in a direction transverse to said one direction from a plane extending in said one direction from said printing area; means for moving in said transverse direction each of said supports during movement of the same toward said platen so that the support moves to a position of readiness located opposite said printing area; two type members, each type member having a group of types and being mounted on one of said supports, respectively, for rotary movement about axes coinciding in said inoperative positions of said supports between a plurality of printing positions in which different types thereof confront said platen; first means for moving one of said supports, and second means for moving the other support with the respective type member from said position of readiness in a printing stroke in said one direction toward said area so that said type members are spaced from each other in said one direction; a set of keys including first and second groups of
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for turning movement independently of each other toward and away from said platen and having a normal inoperative position spaced in one direction from said platen and spaced equal distances from said printing area in a direction transverse to said one direction and along said platen; two type wheels, each type wheel having a group of types and being mounted on one of said supports, respectively, for rotary movement about an axis parallel to the axis of said platen between a plurality of printing positions in which difierent types thereof confront said platen, said axes of said type wheels coinciding in said inoperative positions of said supports, said type wheels being connected to each other for rotation in such a relative angular position that when one type wheel is in one of said printing positions, the respective other type Wheel is in an intermediate position between two printing positions; a set of operator influenced keys including two groups of keys respectively representing the groups of types of said two type wheels; rotary selector means having a plurality of selector positions and being operatively
  • said first coupling means include a stepped wheel connected for rotation with said drive means; a pair of toothed discs having oppositely oriented teeth on the periphery thereof, one of said discs being secured to said selector shaft, and the other disc being mounted for turn ing movement on said selector shaft, said one disc supporting a coupling pawl cooperating with said stepped wheel for coupling said selector shaft with said drive means; resilient means connecting said discs and urging the same to assume a predetermined relative angular position; a pin secured to said pawl and engaging a camming surface of said other disc so that upon relative movement of said discs said coupling pawl is operated between a disengaging and a coupling position; a first stop lever actuated by said shifting means and cooperating with said teeth of said other disc for locking the same in one direction of rotation for causing movement of said coupling pawl to a disengaged position when a key is actuated; and a second stop lever operated by said
  • said actuating means includes an actuator shaft and an actuator lever secured to said actuator shaft; said connecting means including a stepped coupling wheel continuously rotated by said drive means, and a coupling latch mounted on said actuator lever and being operated by said shifting means to move to a position engaged by said stepped coupling wheel whereby said actuator shaft is caused to perform a rocking motion for moving the respective support to which said actuating means is coupled by said second coupling means.
  • said actuating means includes an actuating member; a shaft supporting said actuating member and said supports; wherein each of said coupling means is a coupling member turnably mounted on one of said supports, respectively, and having one end cooperating with the respective feeler means, and another end cooperating with said actuating means when said coupling member is actuated by the respective feeler means in said coupling position of said feeler means; and spring means connected to each support and to the corresponding coupling member for returning the same to a normal position of rest.
  • each of said notches has a wider outer portion and a narrower inner portion so that said feeler means moves to said coupling position when located in said wider outer portion, and locks the respective positioning means when located in said inner narrower portion so as to lock the respective type wheel in a printing position.
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for turning movement independently of each other toward and away from said platen and having a normal inoperative position spaced in one direction from said platen and spaced equal distances from said printing area in a direction transverse to said one direction and along said platen; two type wheels, each type wheel having a group of types and being mounted on one of said supports, respectively for rotary movement about an axis parallel to the axis of said platen between a plurality of printing positions in which different types thereof confront said platen, said axes of said type wheels coinciding in said inoperative positions of said supports, said type wheels being connected to each other for rotation in such a relative angular position that when one type Wheel is in one of said printing positions, the respective other type wheel is in an intermediate position between two printing positions; two positioning discs, each positioning disc being connected to one of said type wheels for rotation therewith and having a group of alternate notches and projections respectively corresponding to said types and printing positions of the respective type wheel;
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for turning movement independently of each other toward and away from said platen and having a normal inoperative position spaced in one direction from said platen and spaced equal distances from said printing area in a direction transverse to said one direction and along said platen; two type wheels, each type wheel having a group of types and being mounted on one of said supports, respectively, for rotary movement about an axis parallel to the axis of said platen between a plurality of printing positions in which diiferent type thereof confront said platen, said axes of said type wheels coinciding in said inoperative positions of said supports, said type wheels being connected to each other for rotation in such a relative angular position that when one type wheel is in one of said printing positions, the respective other type wheel is in an intermediate position between two printing positions; two positioning discs, each positioning disc being connected to one of said type wheels for rotation therewith and having a group of alternate notches and projections respectively corresponding to said types and printing positions of the respective
  • a printing arrangement comprising, in combination, a platen having a printing area; two supports mounted for turning movement independently of each other toward and away from said platen and having a normal inoperative position spaced in one direction from said platen and spaced equal distances from said printing are-a in a direction transverse to said one direction and along said platen; two type wheels, each type wheel having a group of types and being mounted on one of said supports, respectively, for rotary movement about an axis parallel to the axis of said platen between a plurality of printing positions in which difierent types thereof confront said platen, said axes of said type wheels coinciding in said inoperative positions of said supports, said type wheels being connected to each other for rotation in such a relative angular position that when one type wheel is in one of said printing positions, the respective other type wheel is in an intermediate position between two printing positions; positioning means connected to said type wheels for rotation therewith and having a plurality of circumferentially spaced element-s respectively arranged in angular positions corresponding to the printing positions of

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US257320A 1962-02-10 1963-02-08 Printing arrangement for business machine Expired - Lifetime US3221863A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343642A (en) * 1965-04-24 1967-09-26 Wanderer Werke Ag Koln Typing apparatus having plural type wheels which selectively strike platen
US3353648A (en) * 1965-08-31 1967-11-21 Fujitsu Ltd Typewriter with typewheel and hammer mounted on movable carriage
US3404765A (en) * 1966-06-25 1968-10-08 Olivetti & Co Spa Printing device with selecting mechanism employing a group of eccentrics
US3420350A (en) * 1966-09-03 1969-01-07 Grundig Emv Type head driving means employing flexible belt
US3760926A (en) * 1971-08-25 1973-09-25 Honeywell Inf Systems Free flight print system for a serial printer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US864430A (en) * 1900-12-24 1907-08-27 American Typographic Corp Typographic machine.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US864430A (en) * 1900-12-24 1907-08-27 American Typographic Corp Typographic machine.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343642A (en) * 1965-04-24 1967-09-26 Wanderer Werke Ag Koln Typing apparatus having plural type wheels which selectively strike platen
US3353648A (en) * 1965-08-31 1967-11-21 Fujitsu Ltd Typewriter with typewheel and hammer mounted on movable carriage
US3404765A (en) * 1966-06-25 1968-10-08 Olivetti & Co Spa Printing device with selecting mechanism employing a group of eccentrics
US3420350A (en) * 1966-09-03 1969-01-07 Grundig Emv Type head driving means employing flexible belt
US3760926A (en) * 1971-08-25 1973-09-25 Honeywell Inf Systems Free flight print system for a serial printer

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DE1250161B (en(2012))

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