US3410469A - Arrangement for effecting the optional in-and-out movement of guide pins on typewriter platens - Google Patents

Arrangement for effecting the optional in-and-out movement of guide pins on typewriter platens Download PDF

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Publication number
US3410469A
US3410469A US656394A US65639467A US3410469A US 3410469 A US3410469 A US 3410469A US 656394 A US656394 A US 656394A US 65639467 A US65639467 A US 65639467A US 3410469 A US3410469 A US 3410469A
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United States
Prior art keywords
guide pins
arrangement
cam plate
effecting
optional
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Expired - Lifetime
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US656394A
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English (en)
Inventor
Deeg Reinhard
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International Standard Electric Corp
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International Standard Electric Corp
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Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
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Publication of US3410469A publication Critical patent/US3410469A/en
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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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/26—Pin feeds
    • B41J11/27—Pin feeds on or within the platen-rollers

Definitions

  • the present invention relates to an arrangement for effecting the optional in-and-out movement of guide pins which are provided on the platens of form-processing typewritt ers.
  • the guide pins are positioned in a pinned ring capable of being radially displaced, and are provided with bolts which are arranged transversally in relation to the pin axis and serve as a torsional resistance and actuation means.
  • German Patent No. 1,920,424 in which the guide pins with their transversal bolts engage on one side of a common slotted disk and, on the other side, project into the range of action of a stationary connecting link guide.
  • the action of at least one radially influenced guide pin causes the readjustment of the common slotted disk, such that all guide pins are moved in and out in common.
  • the object of the present invention is to provide a guide pin arrangement which is simple in its construction and operation, and which insures a careful handling of the sheets of recording medium to be guided.
  • the guide pins are provided with bolts arranged transversally in relation to the pin axis for serving as a torsional resistance and actuating means, and are displaceably supported in a pinned ring.
  • the guide pins are acted upin in the radial direction by springs and project with their transversal bolts into the range of the curved tracks of two concentrically arranged cam plates. These curved tracks are congruent, and one of the cam plates is capable of being turned so that the two curved tracks can be brought into and out of congruence.
  • the guide pins within a certain curvature section are permitted to move out of the circumference of the cam plates to engage the paper feed holes.
  • FIGS. 1 to 3 of the accompanying drawings in which:
  • FIG. 1 shows the end of a platen comprising the arrangement according to the invention
  • FIG. 2 shows a sectional view of the arrangement according to the invention.
  • FIGS. 3a and 3b show the arrangement in a sectional elevation taken on line I-I of FIG. 2, FIG. 3a showing the arrangement in its operative position and, FIG. 3b showing the arrangement in its non-operative position.
  • FIGS. 1 and 2 Arranged in the usual way at both ends of the platen 2, the arrangement substantially consists of a pinned ring 3 and two cam plates 6 and 8. These plates are capable of rotating over the concentrical portion of their congruent inner cam plate (FIGS. 3a and 3b) on correspondingly set-off annular projections 3a of the pinned ring 3. In the axial direction, the cam plates are guided by the plane surface of the platen 2 or by a spring ring 10.
  • the pinned ring 3 is positioned on the concentrical or shoulder portion of the platen support 2a, and is on a form-locking connection therewith by a not shown locking-pin. The axial position is maintained by the employment of a spring ring 11.
  • the pinned ring 3 is in a form-locking connection with the drive 13 or 14 via the shaft 1, and the cam plate 6 isfixed in a predetermined position by the engagement of the fork-shaped projection 6a and a stationary bar 7.
  • the cam plate 8 is detachably connected with a stationary engaging lever 9 which, by a resilient engagement in engaging grooves 8a arranged on the circumference, can fix these grooves in at least two predetermined positions.
  • cam plates 6 and 8 are provided with congruent cam plates which, according to FIG. 3a and with the exception of an angle or extend concentrically.
  • This angular range a is chosen smaller than and the remaining cam plate section functions as a bearing surface.
  • the guide pins 4 are guided radially in recesses 3b of the pinned ring 3, and are acted upon by compression springs 5, as shown in FIG. 2.
  • the guide pins 4 are provided with transversal bolts 4a, extending into the range of the cam plates 6 and 8. Under the action of the springs 5, the transversal bolts 4a are retained by one of the two curved tracks of the cam plates, depending on which of the two tracks has the smaller curved radius.
  • the cam plate 6 has a priority position in this respect, the significance of which will be explained hereinafter.
  • Cam plate 6, by the engagement between the stationary bar 7 and the fork-shaped projection 6a, is fixed in a position with its operating range a, is shown in FIG. 3a, approximately to the centre of the area through-out which the recording medium 12 is adapted to the platen surface.
  • the guide pins 4 With the outer cam plate 8, as shown in FIG. 3a, in the same position, the guide pins 4 enter the range of operation a in the course of the platen rotation.
  • the transversal bolts 4a are capable under the action of the spring 5 to follow the respective curved track of the cam plate and extend in the radial direction out of the pinned ring 3 to engage the marginal perforation of the recording medium 12.
  • the outer cam plate 8 To withdraw the guide pins, the outer cam plate 8 must be turned at least by the angle of the operating range a with respect to the stationary cam plate bolts 4a indicated in FIG. 3b, one end of the transversal bots 4a is within the range of one or the other concentrical curved track section, so that all guide pins 4, during the platen rotation, will remain in the non-extended condition.
  • the ends of the transversal bolts 4a associated with cam plate 8 are somewhat larger in diameter. With the exception of the transversal bolts 4a falling within the operating range a, the bolts are always lying against the curved track of the cam plate 8 by the action of the springs 5. The friction is sufiicient for readjusting the cam plate 8, in its released condition, together with turning the platen.
  • the engaging lever 9 is brought out of engagement with the respective engaging grove 8a, for turning the platen 2 either in a machine-controlled manner via the line-switching wheel 13, or manually via the handwheel 14, the engaging lever 9 may be released again after the first partial rotation. On further turning of the platen, the engaging groove 8a which is the next one in the direction of rotation, will engage the projection of the engaging lever 9. Thus the cam plate 8 is automatically fixed in the desired position.
  • FIGS. 3a and 3b show two engaging grooves 8a which are displaced by 180. It is conceivable, however, to provide the cam plate 8 with four engaging positions provided that the operating range a is not greater than 90.
  • An arrangement for effecting the in-and-out movement of guide pins on platens of form-processing typewriters comprising:
  • a bolt for each of said guide pins arranged transversally in relation to the pin axis for serving as a torsional resistance and actuating means
  • cam plates having curved tracks, one of said cam plates being stationary and the other one capable of being rotated;
  • each of said guide pins being acted upon by a spring in the radial direction, such that the associated transversal bolt extends into the range of the curved tracks of said pair of cam plates.
  • said curved tracks are inner cam plates which, with the exception of an operating range (a), have a concentrical shape, with the diameter thereof corresponding to the annular projections provided on said pinned ring.

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  • Handling Of Sheets (AREA)
  • Gears, Cams (AREA)
US656394A 1966-08-06 1967-07-27 Arrangement for effecting the optional in-and-out movement of guide pins on typewriter platens Expired - Lifetime US3410469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST025728 1966-08-06

Publications (1)

Publication Number Publication Date
US3410469A true US3410469A (en) 1968-11-12

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Family Applications (1)

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US656394A Expired - Lifetime US3410469A (en) 1966-08-06 1967-07-27 Arrangement for effecting the optional in-and-out movement of guide pins on typewriter platens

Country Status (8)

Country Link
US (1) US3410469A (xx)
BE (1) BE702276A (xx)
CH (1) CH460822A (xx)
DE (1) DE1436744B2 (xx)
DK (1) DK117712B (xx)
GB (1) GB1148559A (xx)
NL (1) NL6710694A (xx)
SE (1) SE328003B (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136809A (en) * 1976-08-12 1979-01-30 Siemens Aktiengesellschaft Paper transport device
US4605209A (en) * 1984-02-09 1986-08-12 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Longitudinal folding apparatus for traveling webs, particularly paper webs received from a rotary printing machine
US5064305A (en) * 1986-03-28 1991-11-12 Oki Electric Industry Co., Ltd. Pin platen mechanism
US5209163A (en) * 1986-02-07 1993-05-11 R. R. Donnelley & Sons Company Printing cylinder with retractable plate register pin and method of assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058196A (en) * 1976-02-23 1977-11-15 Sycor, Inc. Printer with interchangeable paper-feed modules
CN114872451B (zh) * 2022-05-13 2023-09-29 怀化市新型印务有限公司 一种自动打码机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2815672A (en) * 1953-03-26 1957-12-10 Storer Clark Pin wheel feeding unit
US2913093A (en) * 1955-05-18 1959-11-17 Smith Corona Marchant Inc Strip feeding device with retractable pins
CA636510A (en) * 1962-02-13 The Standard Register Company Strip feeding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA636510A (en) * 1962-02-13 The Standard Register Company Strip feeding device
US2815672A (en) * 1953-03-26 1957-12-10 Storer Clark Pin wheel feeding unit
US2913093A (en) * 1955-05-18 1959-11-17 Smith Corona Marchant Inc Strip feeding device with retractable pins

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136809A (en) * 1976-08-12 1979-01-30 Siemens Aktiengesellschaft Paper transport device
US4605209A (en) * 1984-02-09 1986-08-12 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Longitudinal folding apparatus for traveling webs, particularly paper webs received from a rotary printing machine
US5209163A (en) * 1986-02-07 1993-05-11 R. R. Donnelley & Sons Company Printing cylinder with retractable plate register pin and method of assembly
US5064305A (en) * 1986-03-28 1991-11-12 Oki Electric Industry Co., Ltd. Pin platen mechanism

Also Published As

Publication number Publication date
BE702276A (xx) 1968-02-05
GB1148559A (en) 1969-04-16
DK117712B (da) 1970-05-25
DE1436744A1 (de) 1968-11-21
DE1436744B2 (de) 1971-12-09
CH460822A (de) 1968-08-15
NL6710694A (xx) 1968-02-07
SE328003B (xx) 1970-09-07

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