US3601239A - Line-finding feed device for continuous forms for typewriting and such machines - Google Patents

Line-finding feed device for continuous forms for typewriting and such machines Download PDF

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Publication number
US3601239A
US3601239A US803659A US3601239DA US3601239A US 3601239 A US3601239 A US 3601239A US 803659 A US803659 A US 803659A US 3601239D A US3601239D A US 3601239DA US 3601239 A US3601239 A US 3601239A
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United States
Prior art keywords
platen
star wheel
roller
cylindrical wall
lever
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Expired - Lifetime
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US803659A
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English (en)
Inventor
Attilio De Ambrogio
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Olivetti SpA
TIM SpA
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Olivetti SpA
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Publication date
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Publication of US3601239A publication Critical patent/US3601239A/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
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed

Definitions

  • McMahon ABSTRACT Feed apparatus in a printing machine for feeding forms having registration apertures to a printing position comprising a rotatable platen, a star wheel operating in conjunction with said platen to sense said apertures by entering said apertures and rotating with the movement of said apertures, and electrical means responsive to the sensing of said apertures to halt said platen at predetermined writing lines relative to said apertures.
  • the present invention relates to a feed device for continuous forms in typewriting machines, teleprinters, high-speed printers, and other such machines, including a platen and means actuatable by motor to rotate the platen for the advance of the forms.
  • the device is for use in conjunction with a form provided with a hole in correspondence with a predetermined writingline.
  • a fect! device for a continuousform provided with a hole in correspondence with a predetermined writing line in a typewriting machine, teleprinter, high-speed printer, or other such machine
  • a actuatable means inoperative sothatthe form is arrested in correspondence with the writing'line.
  • the feed device of FIG. I is incorporated in a high-speed serial printer of the type having a type carriage slidable transversely on two guides'll secured to the fixedframe' 9 of the machine.
  • the printer moreover comprises a platen 12' which is fixed on two shafts l3 and 14 (FIG. 2) rotatable in the fixed frame 9 of the machine.
  • a knob 15 is fixed in known manner on the shaft 13; while on the shaft 14 there is fixed a gear 16 in mesh witha second gear 17.
  • the latter gear 17 is adapted to be rotated by a motor to effect the line spacing or continuous advance of the paper under the control of actuatable means, comprising an electromagnet indicated by" the reference 18 in FIG. 5, in the manner described in the specification of the copending US. Pat. application 'Ser; No. 774,375 tiled in thename of Alessandro Cortona and'Pietro Musso.
  • the platenlZ is adaptedtofeed continuous forms 19(FIG. l), for example of the-type folded in zigzag form, which are guided by a paper guide plate 20 and are held 'so'that they bear pressing rollers 21.
  • theforms 19 are held so that they bear against the platen 12 by a series of upper paperpressing rollers 22, which are carried' by a paper-holding frame or ball constituted by a bar 23 and two arms 24 pivoted at 26 on the frame 9' of the machine.
  • a spring 25 normally urges the bail 23,24 to cause the rollers to press the forms 19 on the platen 24.
  • the continu'ousforms 19 are separated from one another by a series of perforations 8 parallel tothe writing lines and disposed in correspondence with each fold.
  • a hollow cylindrical cup 28 (FIG; 2) Ofthe same diameter as the platen 12 is fixed on the shaft 13.
  • a star wheel 29 (FIG. 1) having three rounded pegs 30 arranged in accordance with the vertices of an equilateral triangle
  • a roller 31 fast with the star wheel 29 engages an inner cylindrical wall 32 of the cup 28.
  • the roller 31 is rotatable on a pin 33 fixed to a lever 34.
  • This lever 34 is pivoted at 35 on a crank 36 fixed to a sleeve 43 (FIG. 2) rotatable on the shaft 13.
  • the lever 34 (FIG. 1) is moreover connected tothe crank 36 by means of a spring 37 which holds the roller 31' pressed against the wall 32 of the cup 28.
  • a second sleeve 44 is rotatable on the shaft 13 and to it there is fixed a lever 38 actuated manually by means of a key 39 fixed thereto.
  • the lever 38 is provided with a slot 40guidedona fixed pin 41 to which there are fixed two rollers 42 which hold the lever 38 by frictionfromtime to time in the position reached.
  • Each sleeve 43 and 44 (FIG. 2) is fast with two like gears 45 and 46 with which there mesh two pinions 47 and 48 fixed ona pin 49 rotatable eccentrically on a disc of the cup 28;
  • the pegs 30 (FIG. 1) of the star wheel 29 are adapted to cooperate with a plunger 50 of an electric switch 51 fixed to a bentlug52 of an'arm 53 of the lever 38.
  • the electric switch 51 When the electric switch 51 is closed, it is adapted to send a signal to a first input of a flip-flop 54(FIG. 5). Another input of the flip-flop 54 is adapted toreceive a signal on the closing of a switch 5 5 and then emits an outputsignal'which, via an amplifier 56, energizesthe electromagnet-18'(FIG. 5).
  • the feed device operates in the following manner. Let it be assumed that the switch 55 has been closed and holds the flipflop 54 in the active state. This causes the gear 17 (FIG. 2) to rotate through the amplifier 56 and the electromagnet 18. This gear 17, acting through the gear 16, causes the shaft 14 to rotate together with the platen 12, the shaft 13 and the cup 28.
  • the platen 12 By rotating anticlockwise, the platen 12 (FIG; 1) causes the forms'l9 to advance upwardly.
  • the cup 28 carries the pinions 47 and 48'round and they roll onthe gears 45 and 46.
  • the lever 38 is actuated manually through the key 39.
  • the gear 46 rotates the pinion 48 which, through the pinion 47, rotates the gear 45 together with the crank 36 clockwise through the same angle as the lever 38.
  • the lever 34 then shifts the star wheel 29 downwardly, advancing the sensing of the holes 27 of the forms 19.
  • the lever 38 anticlockwise it causes the shifting of the star wheel 29 anticlockwise, via the pinions 47 and 48 and the gears 45 and 46, thereby retarding the sensing of the forms 19.
  • the continuous forms 19 are sensed by a star wheel 57 (FIG. 3) having five rounded points 58.
  • the star wheel 57 is disposed in correspondence with a circular groove 59 in the platen 12 and is fast with a sleeve 60 (FIG. 4) rotatable on the upper paper-holding bar 23.
  • the sleeve 60 is fast with two rollers 61 of the same diameter as the upper paper-pressing rollers 22.
  • the rollers 61 are therefore in engagement with the outer surface of the platen 12 through the action of a spring 62 (FIG. 3) acting on an arm 63 of the upper paper-holding bar 23.
  • a cam 64 Fast with the two rollers 61 is a cam 64 in the form of a pentagonal prism, which is disposed between the rollers 61 and is adapted to actuate the plunger 50 of the electric switch 51, which is now fixed to a lug 67 of the arm 63.
  • a feed device for a continuous form provided with a hole in correspondence with a predetennined writing line in a machine comprising:
  • a platen means actuatable to rotate the platen for the advance of said form, a cylindrical wall movable rigidly with said platen, a roller slidably frictionally engaging said cylindrical wall, a star wheel fixed to said roller having rounded pegs for entering a hole in said form by rotation of the star wheel due to the friction exerted by the cylindrical wall on the roller, and means responsive to the rotation of said star wheel to render the means actuatable inoperative so that the form is arrested in correspondence with the writing line.
  • a device wherein said platen is fixed on two rotatable shafts, said cylindrical wall is the inner surface of a cylindrical member fixed on one of the shafts and having an external diameter equal to that of said platen, said star wheel being disposed at one end of said platen.
  • a device wherein said star wheel is carried by an arm pivoted on a crank rotatable on said one of the shafts, adjustment means is connected to said crank for adjusting its angular position and resilient means is connected to said arm so as to press said roller against the inner surface of said cylindrical member.
  • crank is connected to a manually operable lever rotatable on said one of the shafts, the lever being disposed at the opposite end of said cylindrical member with respect to the crank.
  • crank is connected to said lever by a pair of pinions fast with each other and rotatable eccentrically on said cylindrical member, and two gears fast respectively with said crank and said lever, said two gears meshing with said pair of pinions and coaxial with the cylindrical member to permit the rotation of the crank via the lever.
  • a device wherein said lever is retained by a friction element in the position to which it is set.
  • a device wherein said roller engages the outer surface of the platen, the star wheel being disposed in correspondence with a circular groove in the platen.
  • a device according axially claim 10, wherein said star wheel is fast with a lobed cam coaxial therewith and operative to close an electric contact carried by said paper-holding bar to render said means actuatable inoperative.
  • a device wherein said cam has the fonn of a prism with the cross section of a regular polygon having a number of sides equal to the number of pegs of said star wheel, the contact being closed by means of the vertices of said prism.
  • a device wherein said means actuatable is controlled by a flip-flop which is brought to an active state by an advance signal, the flip-flop being returned to the inactive state by a signal generated on the closing of said contact.
  • a line registration device for operation in conjunction with a rotatable platen of a writing machine to register lines to be written on a fonn relative to registration holes in said form comprising:
  • d. means actuated by said star wheel to halt rotation of said platen whereby said form is arrested in correspondence with a line to be written.
  • a line registration device according to claim 14 wherein said cylindrical wall is a continuation of said platen.
  • a registration device wherein said cylindrical wall has a circumferential groove positioned to underlie said registration holes, said roller engages said cylindrical wall externally and said pegs enter said registration holes from the exterior surface of said form so as to enter said groove.
  • a registration device wherein said cylindrical wall is an interior wall of a cylinder concentric with said platen and said device further comprises means to support said roller and said star wheel in the interior of said cylinder.
  • a registration device according to claim 14 wherein said means actuated by said star wheel is an electrical switch responsive to rotation of said star wheel for changing the state of an electrical circuit controlling the rotation of said platen.

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US803659A 1968-03-07 1969-03-03 Line-finding feed device for continuous forms for typewriting and such machines Expired - Lifetime US3601239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5082368 1968-03-07

Publications (1)

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US3601239A true US3601239A (en) 1971-08-24

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Application Number Title Priority Date Filing Date
US803659A Expired - Lifetime US3601239A (en) 1968-03-07 1969-03-03 Line-finding feed device for continuous forms for typewriting and such machines

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US (1) US3601239A (it)
CH (1) CH490192A (it)
DE (1) DE1909924C3 (it)
FR (1) FR1598043A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237272A3 (en) * 1986-03-11 1989-01-04 Ing. C. Olivetti & C., S.P.A. Serial dot printer with movable head-carrying carriage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1985178A (en) * 1932-12-16 1934-12-18 Joseph H Loeb Attachment for bookkeeping machines
US2246969A (en) * 1940-12-28 1941-06-24 Autographic Register Co Typewriting machine
US2307351A (en) * 1941-07-18 1943-01-05 Autographic Register Co Typewriting machine
US2558947A (en) * 1948-05-27 1951-07-03 Ibm Sheet and envelope feeding device
US2831561A (en) * 1954-04-28 1958-04-22 Burroughs Corp Selective control for sheet feeding apparatus
US3211272A (en) * 1964-12-16 1965-10-12 Burroughs Corp Front feed apparatus for bookkeeping machines
US3247944A (en) * 1963-04-30 1966-04-26 Burroughs Corp Line find mechanism
US3356200A (en) * 1964-05-22 1967-12-05 Ibm Zone and line finding

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1985178A (en) * 1932-12-16 1934-12-18 Joseph H Loeb Attachment for bookkeeping machines
US2246969A (en) * 1940-12-28 1941-06-24 Autographic Register Co Typewriting machine
US2307351A (en) * 1941-07-18 1943-01-05 Autographic Register Co Typewriting machine
US2558947A (en) * 1948-05-27 1951-07-03 Ibm Sheet and envelope feeding device
US2831561A (en) * 1954-04-28 1958-04-22 Burroughs Corp Selective control for sheet feeding apparatus
US3247944A (en) * 1963-04-30 1966-04-26 Burroughs Corp Line find mechanism
US3356200A (en) * 1964-05-22 1967-12-05 Ibm Zone and line finding
US3211272A (en) * 1964-12-16 1965-10-12 Burroughs Corp Front feed apparatus for bookkeeping machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237272A3 (en) * 1986-03-11 1989-01-04 Ing. C. Olivetti & C., S.P.A. Serial dot printer with movable head-carrying carriage

Also Published As

Publication number Publication date
DE1909924C3 (de) 1978-07-27
DE1909924B2 (de) 1977-11-24
DE1909924A1 (de) 1969-10-16
FR1598043A (it) 1970-06-29
CH490192A (it) 1970-05-15

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