US3746141A - Shift device for positioning single element type carriers on typewriters and like machines - Google Patents

Shift device for positioning single element type carriers on typewriters and like machines Download PDF

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Publication number
US3746141A
US3746141A US00124017A US3746141DA US3746141A US 3746141 A US3746141 A US 3746141A US 00124017 A US00124017 A US 00124017A US 3746141D A US3746141D A US 3746141DA US 3746141 A US3746141 A US 3746141A
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United States
Prior art keywords
lever
drive
translating
positions
drive lever
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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
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US00124017A
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English (en)
Inventor
H Decker
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.)
Triumph Werke Nuernberg AG
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Triumph Werke Nuernberg AG
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Filing date
Publication date
Priority claimed from DE19702018418 external-priority patent/DE2018418C/de
Application filed by Triumph Werke Nuernberg AG filed Critical Triumph Werke Nuernberg AG
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Publication of US3746141A publication Critical patent/US3746141A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/54—Selecting arrangements including combinations, permutation, summation, or aggregation means
    • B41J7/56—Summation devices for mechanical movements

Definitions

  • ABSTRACT A range shiftable motion transmitting connection between a single element type carrier and a drive lever positionable by differential mechanism to any of n discrete positions permits positioning of the type carrier to 2(n-1) discrete type carrier positions through utilization of a translating lever responsive to movement of said drive lever through first and second ranges of posi tioning movement according to the relative positions of said levers.
  • the levers are shifted relative to one another whenever the drive lever, after having moved to one extreme position, is moved to its other extreme position.
  • Positioning mechanisms for cylindrical, spherical, and prism shaped type carriers on printers and especially for automatic printers and teletypers are known.
  • To position such type carriers in order to print a character two different motions are required which in most cases are performed at the same time.
  • a rotational motion is required to select the character from a vertical column and an axial motion to select the character from a horizontal row.
  • differential mechanisms are used which are known in several executions. Most of these differential mechanisms are arranged in such a way that with a given amount of input or calling members, which are activated in different combinations, a given amount of different motions are generated at the output of the mechanism.
  • FIG. 1 is an isometric view of the shiftable connection to position a sphere shaped type carrier
  • FIG. 2 is a side view of the shiftable connection in a I stable position different from the position shown in FIG. 1;
  • FIG. 1 shows a sphere shaped type carrier 1 consisting of two parts on the surface of which six vertical columns of characters 2 are arranged.
  • the type carrier 1 is mounted on a shaft 3 which also carries a gear 4 in engagement with a rack 5 which is guided by aroller 6.
  • the rack 5, which serves to create the rotational motion of the type carrier 1 about shaft 3, is only shown in principal and is not necessary for the description of the instant invention.
  • the type carrier 1 is mounted on a fork 7 which is fastened to the carrier tube 8 at the lower end of which a crank 9 is provided which has a guide slot 10.
  • the carrier tube 8 with the type carrier 1 is mounted on a carriage 11, which is not fully shown, in a known fashion in front of a platen cylinder and can move laterally .or is fixed when used with a platen cylinder mounted in a movable carriage.
  • Also fastened to the carriage 11 . is an outwardly directed mounting stud or pivot 12 carrying a drive lever 13 and a translating lever 14. As viewed in FIGS.
  • drive lever 13 has a forked guide 15 on the end of its rightwardly extending lever arm, into which the output member of a differential mechanism (not shown) fits, and also has a grooved stud l6 extending'outwardly therefrom.
  • the drive lever 13 carries on its outer or leftward extending lever arm, adjacent the end thereof, an outward extending mounting stud 17, and is also provided, between pivot 12 and stud 17, with an enlarged hole or vertical slot 18.
  • the translating lever 14, which is also mounted on the mounting stud 12 so that it can rotate, has a grooved stud 19 extending outward from its rightward extending arm and a leftward open slot 20 in the end of its leftward extending arm.
  • the translating lever 14 is shaped like a bridge to support a lever 21 with a ball 22 formed on it.
  • the ball 22 is accommodated in the guide slot 10 to thereby rotate the tube 8 to move the type carrier 1 to a selected one of six columns.
  • the ends of a coiled torsion spring 23 are mounted in the grooves of the stud 16 of the drive lever 13 and the closely adjacent stud 19 of the translating lever 14, the ends of a coiled torsion spring 23 are mounted.
  • a shift lever 24 is pivotally mounted between its ends on the mounting stud l7 and secured with an E-ring 25 for movement in a plane parallel to and outwardly of the planes of movement of the drive lever 13 and the translating lever 14.
  • a differential mechanism positions the drive lever 13 to n or four different positions I, II, III and IV from which 2(n-1) or six different positions P1 to P6 of lever 21 can be generated.
  • two solenoids identified by reference M1 and M2 comprising the differential mechanism are used to generate movements which position the drive lever 13 to any one of the four positions I-IV.
  • the six positions of lever 21 are obtainable by changing or shifting the relative positions of the drive lever 13 and the translating lever 14 from one to another of two stable conditions. This occurs, with the help of overcentering spring 23 and shift lever 24 as will hereinafter appear, whenever the drive lever 13, after having moved to one extreme position in a range of n-1 positions moves to the other extreme position.
  • This shifting thereby provides for movement of the lever arm 21 within two ranges each having (n-l) or three positions corresponding to two ranges of (n1) or three positions I, II and III and IV, III and II, respectively of drive lever 13.
  • the position marked I of the drive lever 13 in FIG. 1 corresponds with the position P1 of the ball lever 21 and 22.
  • the drive lever 13 can be moved into the positions II and III by means of the differential mechanism (not shown), causing the lever 21 and ball 22 to move into the corresponding positions P2 and P3.
  • the solenoid M2 is activated according to the table (FIG. 3). This causes the forked member of the drive lever 13 to move from one of the positions in the range I to III, e.g., III into the position IV and this causes a shift of the translating lever 14 relative to the drive lever 13 into another possible and stable condition shown in FIG. 2.
  • the shift of the translating lever 14 relative to drive lever 13 is caused by the fact that the roller 31 which is mounted on the shift lever 24 comes to rest against the lower stop 33 of the member 34 while the drive lever 13 is moving to position IV and thereby causes the shift lever 24 to move clockwise about stud 17, with the result that the translating lever- 14 is moved counterclockwise by the eccentric portion 28 of stud 27. While this happens, the torsion spring 23 goes beyond its tension point causing the translating lever 14 to rotate further counterclockwise to the FIG. 2 position at which stud 27, which normally transmits the motion of the drive lever 13 to the translating and shift levers 14 and 24, rests at the other end of the elongated hole 18 in the drive lever 13.
  • the shiftable connection it is possible to increase considerably the amount of characters which can be positioned at a type carrier without changing the differential mechanism and the calling elements, e.g., solenoids, clutches, etc.
  • the system is not limited to generate six mechanism positions out of four but can just as well be used to generate for instance fourteen mechanism positions out of eight.
  • the principle to use a shiftable connection to position the whole system into a different area remains the same.
  • the amount of characters are increased from 64 to 96.
  • said translating lever means being shiftable to one or another stable position relative to said drive lever whenever said drive lever after having been moved to one extreme position is moved to the other extreme position, said translating lever means in one stable position being movable with said drive lever through a first range of n-l positions corresponding to a range of n-l positions of said drive lever which includes said one extreme position of said drive lever, and in said other stable position being movable by said drive lever through a second range of n] positions corresponding to a range of n-l positions of said drive lever which includes said other extreme position of said drive lever, 9 and means connected to said translating lever means to position a selected column of type characters corresponding to one of said 2 (n-l) positions.
  • a drive lever having a range of n positions includingfirst and second limit positions
  • a translating lever connected to and movable in response to drive lever movement to position a selected column within one or the other of said areas on said type element from which a type character may be positioned for printing
  • said means connecting said drive and translating levers includes a shift lever pivoted on said drive lever and movable toward an abutment whenever said drive lever after having moved to one extreme position moves to another extreme position thereby to shift the positions of said drive and translating levers relative to one another, said shift lever having a connection with said translating lever.
  • said means connecting said translating and drive levers being operative to switch the positions of said drive and translating levers relative to one another for operation together thereafter through one or the other range of movement when, after movement of said drive lever to one of its extreme positions, said drive lever is moved to itsother extreme position.
  • said connecting means being movable through oneior the other discrete range .of n-l positions according to the last movement of said drive lever from one to the other extreme of said n positions.

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  • Transmission Devices (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US00124017A 1970-04-17 1971-03-15 Shift device for positioning single element type carriers on typewriters and like machines Expired - Lifetime US3746141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702018418 DE2018418C (de) 1970-04-17 Einrichtung zum Einstellen eines Typenträgers an Schreib- oder Rechenmaschinen

Publications (1)

Publication Number Publication Date
US3746141A true US3746141A (en) 1973-07-17

Family

ID=5768315

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US00124017A Expired - Lifetime US3746141A (en) 1970-04-17 1971-03-15 Shift device for positioning single element type carriers on typewriters and like machines

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Country Link
US (1) US3746141A (enrdf_load_stackoverflow)
JP (1) JPS5015405B1 (enrdf_load_stackoverflow)
AT (1) AT301588B (enrdf_load_stackoverflow)
NL (1) NL142896B (enrdf_load_stackoverflow)
SE (1) SE359058B (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847105A (en) * 1955-01-03 1958-08-12 Ibm Movable drum typewriter
US3349888A (en) * 1962-09-12 1967-10-31 Royal Typewriter Co Inc Vibrator type ribbon handling mechanism
US3467233A (en) * 1967-10-19 1969-09-16 Burroughs Corp Mechanism for positioning a spheroidal type head to present a selected type to a print position
US3517124A (en) * 1967-02-27 1970-06-23 Siemens Ag Device for adjusting a type carrier in teletype or data teletype machines
US3516528A (en) * 1968-01-16 1970-06-23 Ibm Character selector
US3625331A (en) * 1968-06-20 1971-12-07 Triumph Werke Nuernberg Ag Type head positioning apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847105A (en) * 1955-01-03 1958-08-12 Ibm Movable drum typewriter
US3349888A (en) * 1962-09-12 1967-10-31 Royal Typewriter Co Inc Vibrator type ribbon handling mechanism
US3517124A (en) * 1967-02-27 1970-06-23 Siemens Ag Device for adjusting a type carrier in teletype or data teletype machines
US3467233A (en) * 1967-10-19 1969-09-16 Burroughs Corp Mechanism for positioning a spheroidal type head to present a selected type to a print position
US3516528A (en) * 1968-01-16 1970-06-23 Ibm Character selector
US3625331A (en) * 1968-06-20 1971-12-07 Triumph Werke Nuernberg Ag Type head positioning apparatus

Also Published As

Publication number Publication date
NL7009598A (enrdf_load_stackoverflow) 1971-10-19
AT301588B (de) 1972-09-11
SE359058B (enrdf_load_stackoverflow) 1973-08-20
JPS5015405B1 (enrdf_load_stackoverflow) 1975-06-05
DE2018418A1 (de) 1971-10-28
DE2018418B2 (de) 1972-10-05
NL142896B (nl) 1974-08-15

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