US3871508A - Tabular device for an office machine - Google Patents

Tabular device for an office machine Download PDF

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Publication number
US3871508A
US3871508A US402154A US40215473A US3871508A US 3871508 A US3871508 A US 3871508A US 402154 A US402154 A US 402154A US 40215473 A US40215473 A US 40215473A US 3871508 A US3871508 A US 3871508A
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US
United States
Prior art keywords
tabulating
tabulator
holes
stop
rack
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Expired - Lifetime
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US402154A
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English (en)
Inventor
Leif Gunnar Petersson
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FACIT HALDA AB
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FACIT HALDA AB
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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
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B41J21/04—Mechanisms for setting or restoring tabulation stops
    • 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
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B41J21/02—Stops or stop-racks

Definitions

  • ABSTRACT A tabulator mechanism for an office machine, such as a typewriter, in which the tabulator rack is mass fabricated by a simple manufacturing process, and the tabulating stops are of an inexpensive construction. The stops can be easily mounted or removed from the tabulator rack. Furthermore, the tabuiator mechanism construction is not only inexpensive but effectively achieves the desired function.
  • the tabulator mechanism comprises a tabulator rack which takes the form of an elongated bar having sections provided with grooves extending perpendicular to the longitudinal axis. The grooves are spaced apart a distance which corresponds to a single travelling step of the typewriter carriage.
  • the tabulating stops are so constructed and arranged that they can assume two different positions, i.e., an operative position and an inoperative position.
  • the tabulating stop acts upon a release member or a stop member when passing the desired printing position.
  • the above-mentioned relative movement is stopped either directly by the impact of the stop member or by a special stop member being engaged by the release member.
  • the use of the release member is known especially in the construction of electrically operated office machines in which the tabulating stops would be broken or damaged if the tabulating stop struck the stop member directly. This problem arises due to the face that the magnitude and velocity of the moving masses, such as a typewriter carriage, is so great that the stopping force of the mass cannot be absorbed by the relatively weak stop.
  • the release means do not require any greater forces in order to enter into the desired function.
  • the aforesaid constructional arrangement is set forth in U.S. Pat. No. 3,586,150.
  • the known tabulator devices for office machines are relatively complicated to manufacture as well as comparatively expensive to produce.
  • the tabulator rack of known construction is provided with alarge number of transverse grooves being fabricated by means of a time consuming milling procedure.
  • it is difficult to mount the tabulating stops since they have to be fitted in the grooves of the tabulator rack and must be provided with a through shaft and a latching means that can maintain the stops in a preset position.
  • the present invention is directed to a tabulator device for office machines, such as typewriters, in which the tabulator rack constructed according to the teachings of the present invention can be mass produced by a simple technique, such as punching. Furthermore, the tabulator stops can be manufactured simply and inexpensively.
  • Another object of the present invention is to provide a clearing device of simple construction which will clear the tabulator mechanism in both directions of movement of the tabulator rack.
  • FIG. I is a perspective view of the tabulator rack and a single tabulating stop constructed in accordance with the teachings of the present invention and illustrating diagramatically the structure for setting the tabulating stop;
  • FIG. 2 is a partial perspective view of the tabulator rack shown in FIG. 1 having all the tabulating stops mounted thereon in which one stop is in the inoperative position while the remainder are in the active position;
  • FIG. 3 is a sectional view taken along the lines III-Ill of FIG. 1 illustrating the manner of mounting each of the tabulating stops in the tabulator rack.
  • a tabulator rack 10 is shown in FIGS. 1 and 2 for use in a tabulator mechanism of an office machine, such as a typewriter T.
  • the tabulator rack is formed by a simple manufacturing process as a single bent metal plate of two contiguous U-shaped sections opening in opposite directions. The construction results in three parallel upstanding parts ll, l2, 13.
  • the part 11 is provided with a row of circular holes 14 while the part 12 has a series of elongated holes 15, the longitudinal axis of each hole being substantially perpendicular to the longitudinalaxis of the tabulator rack 10.
  • the part 13 of the rack 10 has a row of holes 16, each in the form of a substantially V-shaped opening with its axis of symmetry parallel to the longitudinal axis of the rack 10.
  • the distance between each of the holes 16 corresponds to a single travelling step of the typewriter carriage. It should be observed from FIG. 3 that the elongated holes 15 in the middle part 12 of the tabulator rack 10 are displaced to the left of the corresponding holes 14 and 16 in the respective parts 11 and 13 of the. rack.
  • each tabulating stop 17 is fabricated of a yieldable wire, such as music wire, and is provided with a head 17a. It should be noted that the tabulating stops 17 are so constructed to be suitable for mass production in which a single operation, a suitable length of wire can be cut for a stop and simultaneously one end of the wire can be staved to form a head 17a. When the tabulator mechanism is being mounted in the carriage, it is a rather simple pro-.
  • each of the tabulating stops 17 are not perpendicular to the parts ll, 12, and 13 of the tabulator rack 10 but are bowed substantially at the center of the stop. This howing effect is created since, as mentioned hereinabove, the holes 15 are displaced with respect to the holes 14 and 16. Moreover, each of the holes 16 is located on a line which extends substantially at right angles to the rack 10 through the holes 14. Because of this arrangement, the stop 17 has to be bent back in order to insert the end thereof through the hole 16. The end of the stop then will be under tension and will snap either into the bottom or top of the substantially V-shaped hole 16. The stop 17 then will assume a stable condition in either of the aforesaid positions.
  • the active position of the tabulating stop 17 is set by an adjustment yoke 19 which by means of lever 21 of the type common in typewriters is actuated by a tabulator set key 22.
  • the adjustment yoke 19 is loosely supported on a shaft 20 so that when the key 22 is depressed, theyoke 19 is turned in an angular movement and the curved finger 23 connected to the yoke 19 engages the end of the tabulating stop 17 to urge the same down to the lower active position of the stop.
  • a clearing member 24 is shown with adjustment yoke 19 and the curved finger 23 removed for purposes of clarity.
  • the clearing member 24 is fixed on shaft 20, and as shown diagrammatically, the clearing member 24 is actuated by a clearing key 26. In this manner, the clearing member 24 is rotated in a clockwise direction thereby engaging the end of the tabulating stop 17 to return the same to its upper inoperative position as seen in the extreme left hand stop 17 of FIG. 2.
  • the clearing member 24 is provided with inclined edges 27 and 28 which permits the rapid clearing of the stop, since the carriage with its tabulator rack moves linearly in one direction or the other after the clearing key 26 is depressed and one of the inclined edges of the clearing member 24 moves the tabulating stops 17 to their upper inoperative position.
  • the clearing member 24 functions in either path of movement of the carriage.
  • the tabulating stops 17 and the stop members of the office machine can co-act through a releasing means 29 (FIG. 1) which when struck by a tabulating stop 17 in its lower active position actuates the respective stop member of the machine.
  • a tabulator mechanism for an office machine having stop members comprising a tabulator rack provided with a plurality of tabulating stops co-acting with said stop members, said tabulator rack having three spaced structural elements, each being provided with a set of spaced holes extending in separate spaced planes parallel to the longitudinal axis of said tabulator rack, the spacing between each adjacent hole in each set corresponding to one step of travel of the machine, each of the holes in said middle set being offset relative to the corresponding holes in both the interior and exterior structural elements, said tabulating stops being yieldable pins and each being inserted through one hole in each of the three corresponding rows of holes so that the tabulating stop will be under tension in the direction of the longitudinal axis of said tabulator rack, each hole of the exterior set of spaced holes being elongated and arcuate whereby an end of each of the tabulating stop assumes a stable position in a selected end of said elongated and arcuate hole.
  • said means includes a curved finger, a lever operatively connected to said curved finger whereby when said lever is depressed said finger engages a selected tabulating stop to move the latter to its operative position.

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  • Accessory Devices And Overall Control Thereof (AREA)
US402154A 1973-03-21 1973-10-01 Tabular device for an office machine Expired - Lifetime US3871508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7303960A SE363278B (US20100056889A1-20100304-C00004.png) 1973-03-21 1973-03-21

Publications (1)

Publication Number Publication Date
US3871508A true US3871508A (en) 1975-03-18

Family

ID=20316982

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Application Number Title Priority Date Filing Date
US402154A Expired - Lifetime US3871508A (en) 1973-03-21 1973-10-01 Tabular device for an office machine

Country Status (6)

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US (1) US3871508A (US20100056889A1-20100304-C00004.png)
JP (1) JPS5328801B2 (US20100056889A1-20100304-C00004.png)
CH (1) CH563245A5 (US20100056889A1-20100304-C00004.png)
DE (1) DE2340725A1 (US20100056889A1-20100304-C00004.png)
IT (1) IT1008443B (US20100056889A1-20100304-C00004.png)
SE (1) SE363278B (US20100056889A1-20100304-C00004.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042975A1 (en) * 1980-06-27 1982-01-06 International Business Machines Corporation Tabulation rack for a typewriter or the like
US4348124A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
US4348123A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
US4904099A (en) * 1977-01-14 1990-02-27 Shintaro Abe Electronic typewriter
WO2011047236A1 (en) 2009-10-16 2011-04-21 Weatherford/Lamb, Inc. Surface gas evaluation during controlled pressure drilling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5722086A (en) * 1980-07-11 1982-02-04 Serabisu Sa Tub set device for typewriter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892071A (en) * 1931-12-17 1932-12-27 Royal Typewriter Co Inc Typewriting machine
US2805749A (en) * 1947-08-20 1957-09-10 Edward E Kleinschmidt Tabulating mechanism for recording apparatus
US3279577A (en) * 1963-11-25 1966-10-18 Olivetti & Co Spa Tabulating device having stops spaced by two letter spaces
US3333669A (en) * 1965-03-26 1967-08-01 Ibm Tabulation rack
US3583542A (en) * 1968-07-16 1971-06-08 Litton Business Systems Inc Tabular rack assembly
US3586150A (en) * 1967-11-02 1971-06-22 Facit Halda Ab Tabulator safety apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1892071A (en) * 1931-12-17 1932-12-27 Royal Typewriter Co Inc Typewriting machine
US2805749A (en) * 1947-08-20 1957-09-10 Edward E Kleinschmidt Tabulating mechanism for recording apparatus
US3279577A (en) * 1963-11-25 1966-10-18 Olivetti & Co Spa Tabulating device having stops spaced by two letter spaces
US3333669A (en) * 1965-03-26 1967-08-01 Ibm Tabulation rack
US3586150A (en) * 1967-11-02 1971-06-22 Facit Halda Ab Tabulator safety apparatus
US3583542A (en) * 1968-07-16 1971-06-08 Litton Business Systems Inc Tabular rack assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904099A (en) * 1977-01-14 1990-02-27 Shintaro Abe Electronic typewriter
EP0042975A1 (en) * 1980-06-27 1982-01-06 International Business Machines Corporation Tabulation rack for a typewriter or the like
US4348124A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
US4348123A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
WO2011047236A1 (en) 2009-10-16 2011-04-21 Weatherford/Lamb, Inc. Surface gas evaluation during controlled pressure drilling

Also Published As

Publication number Publication date
DE2340725A1 (de) 1974-10-03
CH563245A5 (US20100056889A1-20100304-C00004.png) 1975-06-30
SE363278B (US20100056889A1-20100304-C00004.png) 1974-01-14
JPS49121611A (US20100056889A1-20100304-C00004.png) 1974-11-20
IT1008443B (it) 1976-11-10
JPS5328801B2 (US20100056889A1-20100304-C00004.png) 1978-08-17

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