US3356364A - Feed catch for apparatus handling sheet material - Google Patents

Feed catch for apparatus handling sheet material Download PDF

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Publication number
US3356364A
US3356364A US563199A US56319966A US3356364A US 3356364 A US3356364 A US 3356364A US 563199 A US563199 A US 563199A US 56319966 A US56319966 A US 56319966A US 3356364 A US3356364 A US 3356364A
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US
United States
Prior art keywords
feed
sheet
base plate
slots
check
Prior art date
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
Application number
US563199A
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English (en)
Inventor
Grigereit Helmut
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.)
BASF Schweiz AG
Original Assignee
Ciba AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba AG filed Critical Ciba AG
Application granted granted Critical
Publication of US3356364A publication Critical patent/US3356364A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/625—Apparatus which relate to the handling of originals, e.g. presence detectors, inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops

Definitions

  • ABSTRACT OF THE DISCLOSURE Apparatus to ensure that a sheet of paper is fed in straight to an office machine comprises a plurality of check levers arranged in spaced relation transversely of the direction of feed of the paper and which are rigidly secured to a spring loadedcross shaft which tends to retain all check levers in a position blocking passage of the paper sheet.
  • a pawl which when released from its retaining slot by contact with the leading edge of the paper sheet permits the leading edge to then engage the corresponding check lever and raise it out of its retaining slot thus rotating the check lever out of the path of travel of the sheet.
  • the arangement is such that only when the paper sheet is fed in straight are all of the pawls released simultaneously thus to permit all check levers to be actuated simultaneously to a position allowing the sheet to be passed by the levers. Should an attempt be made to feed the paper sheet in a slanted manner relative to the line of pawls so that one or more of the pawls remains latched in its retaining slot, none of the check levers can be actuated and thus the paper sheet is prevented from being fed into the machine.
  • This invention relates to a feed catch for apparatus handling sheet material to ensure that the sheets to be processed are fed in straight.
  • the feelers consist of the pawls which are rotatably mounted and drop into cams on the check levers; they can be operated individually by the respective sheet edges and are turned about their axis by the forward movement of the sheets, whereby they become disengaged from the cams on the check levers.
  • the edge of the sheet comes up against the cam of the check lever and, n consequence of the common shaft of the check levers, it can only be pushed on further when all feelers are d1sengaged.
  • the check levers are pushed downwards against the torque of a spring. If the sheet feed is not correct, i.e.
  • the projecting edge comes up against the camof the corresponding check lever and subsequently causes the sheet to be turned round until all the feelers are released. If the distance between the front edge of the feeler and the cam of the check lever is kept small, possible error in the feed becomes negligible.
  • the object of the invention is a simple feed catch for sheet material which obviates the above-described disadvantages and, While requiring little space, secures a perfect and straight feed-in of the individual sheets.
  • a feed catch device for ensuring straight feed of sheet material matically securing straight feed.
  • at least two feelers are disposed on a straight line at right angles to the direction of the sheet feed and can be operated by the front edge of the sheet and only after simultaneous operation do the feelers release a catch fitted immediately behind the feelers and permit the feed to continue.
  • Electrical contacts e.g. two contacts which have to be opened by the edge of the sheet, a light source with photocell, or mechanical sensing members are used as feelers. Connection between the catch and the feeler can be established by electrical, electromagnetic or mechanical devices.
  • the catches consist of check levers situated opposite one another at a distance less than the width of the sheets and connected through a common shaft with one another so as to be rotatable together.
  • the device is so arranged that the check levers and the common shaft are below the comprising, in combination,
  • each check lever mounted on said shaft for rotation therewith, each check lever having a lower edge, and each lower edge being engageable in a different first slot in said base plate,
  • each pawl being rotatably connected to a different check lever and being engageable in a different second slot in said base plate, release of said I the feed catch being enabled only when all said pawls are released from their associated second slots, allowing movement of all of the check levers from their associated first slots.
  • first and second slots are parallel to the intended direction of feed of sheet material, the first slots being in staggered relationship with the second slots and with the one end of each of the first slots being colinear with one end of each of the second slots.
  • FIGURE 1 shows the feed catch in perspective view
  • FIGURE 2 shows a section along the line AA of FIGURE 1 with the feed catch in the neutral position
  • FIGURE 3 shows the same section as FIGURE 2 but with the feed catch in the operational position
  • FIGURE 4 shows another embodiment of the feed catch.
  • Two boards 2 and 2' are mounted on a base plate 1 and a shaft 3 is rotatably mounted in the said boards.
  • Two check levers 4 and 4 are rigidly connected with the shaft 3 and in the neutral position their lower edges engage in the slots 10 and 10' respectively of the base plate.
  • the length of the slots 10 and 10 is made such that in the neutral position the check levers strike the base plate but on rotation of the common shaft 3 in the counterclockwise direction (as viewed in FIG- URES 2 and 3) they can be turned out of the slots (FIG- URE 3).
  • Two pawls 6 and 6' are rotatably connected with the check levers 4 and 4, respectively, by means of studs and 5' and are adapted to engage in slots 11 and 11' respectively of the base plate 1.
  • the slots and 10' and 1-1 and 11 are preferably parallel and are displaced in relation to one another in such a way that the leading edges of the slots 10 and 10' and the trailing edges of the slots 11 and 11 are colinear.
  • a spring 8 is fixed to the board 2 by means of a spring pin 9 while the other end of the spring is connected to a spring saddle 7 which in turn is rigidly connected with the shaft 3.
  • the width of the paper to be inserted must be at least the distance between the two slots 11 and 11.
  • FIGURE 1 does not give suflicient protection against the introduction of sheets of smaller width which can be pushed into the apparatus between the two check levers.
  • This disadvantage can easily be eliminated as shown in FIGURE 4, by disposing one or more supplementary pawls and check levers of the same type between the two outer pawls (FIGURE 1).
  • FIGUREA two extra pawls are provided, the individual components of which bear the same figures as those in FIGURE 1 but have the index and respectively. Their method of operation is the same as that of the above-described pawls.
  • the sheet feed continues to remain blocked-until all the pawls 6, 6', 6" and 6" have been released, which implies that the sheet material to be introduced must then have a certain minimum format.
  • the feed catch in FIGURE 4 has the further advantage of a more uniform distribution of pressure on the front edge of the sheets, which is favourable, particularly when very thin sheets are being fed in, since undulation of the sheets in the middle thereof can be prevented.
  • the appropriate selection of the distance between the two boards 2 and 2' can be used to limit the maximum size of the sheets to be introduced.
  • Sheet forwarding systems which can be considered are rollers, grippers, electrostatic or magnetic forwarding elements or any other known sheet transport system.
  • the system according to the invention has the advantage that pawls and check levers are disposed on one and the same side of the sheet feed plane, so that a fiat base plate can be used. This prevents damage due to buckling, tearing, etc., even of thin sheets, and the forces required to release the catch are considerably smaller than in proposed mechanical systems of this kind. Even while being operated, the pawls and the check levers remain connected with one another and so there are no problems of adjustment to ensure re-engagement.
  • a feed catch device for ensuring straight feed of sheet material comprising, in combination,
  • each check lever having a lower edge, and each lower edge being engageable in a dilferent first slot in said base plate
  • each pawl being rotatably connected to a dilferent check lever and being engageable in a different second slot in said base plate, release of the feed catch being enabled only when all said pawls are released from their associated second slots allowing movement of all the check levers from their associated first slots.
  • first and said second slots are disposed parallel to each other and parallel to the intended direction of feed of sheet material, said first slots being in staggered relationship with said second slots and with one end of each of said first slots being colinear with one end of each of said second slots.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)
US563199A 1965-07-12 1966-07-06 Feed catch for apparatus handling sheet material Expired - Lifetime US3356364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH972665A CH439340A (de) 1965-07-12 1965-07-12 Einlaufsperre für Blattware verarbeitende Geräte

Publications (1)

Publication Number Publication Date
US3356364A true US3356364A (en) 1967-12-05

Family

ID=4355001

Family Applications (1)

Application Number Title Priority Date Filing Date
US563199A Expired - Lifetime US3356364A (en) 1965-07-12 1966-07-06 Feed catch for apparatus handling sheet material

Country Status (5)

Country Link
US (1) US3356364A (enrdf_load_stackoverflow)
CH (1) CH439340A (enrdf_load_stackoverflow)
GB (1) GB1091993A (enrdf_load_stackoverflow)
NL (1) NL6609042A (enrdf_load_stackoverflow)
SE (1) SE302407B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572693A (en) * 1968-12-23 1971-03-30 Ibm Card stop-registration device
US3632991A (en) * 1970-02-19 1972-01-04 Burroughs Corp Sensing coded periphery of objects
US3787045A (en) * 1972-06-15 1974-01-22 Prudential Insurance Co Apparatus for controlling movement of objects
EP0019723A1 (en) * 1979-05-29 1980-12-10 International Business Machines Corporation Apparatus for aligning pliable sheet material
US4279555A (en) * 1978-12-29 1981-07-21 Rydell Edmund W F Machine for stacking panels
US4638989A (en) * 1984-09-03 1987-01-27 Sharp Kabushiki Kaisha Device to prevent transport of poorly aligned copy paper
US5074545A (en) * 1985-01-22 1991-12-24 Sharp Kabushiki Kaisha Device for preventing the transport of poorly aligned copy paper
US5113994A (en) * 1990-11-26 1992-05-19 Mueck Edward A Conveyer line straightener
US5531310A (en) * 1994-09-28 1996-07-02 Tetra Laval Holdings & Finance S.A. Mechanism for righting a tipped package along a conveyor line
EP1510480A1 (fr) * 2003-08-25 2005-03-02 Neopost Industrie Dispositif anti-biais pour machine de traitement de courrier
US20060033260A1 (en) * 2004-08-05 2006-02-16 Jean-Pierre Gregoire Anti-skew device for mail processing machine
CN102189851A (zh) * 2010-01-29 2011-09-21 精工爱普生株式会社 片材检测装置和记录装置
US20120228819A1 (en) * 2011-03-11 2012-09-13 Primax Electronics Ltd Sheet feeding apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328943A (en) * 1940-04-20 1943-09-07 Backhouse Headley Townsend Means for registering sheets

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328943A (en) * 1940-04-20 1943-09-07 Backhouse Headley Townsend Means for registering sheets

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572693A (en) * 1968-12-23 1971-03-30 Ibm Card stop-registration device
US3632991A (en) * 1970-02-19 1972-01-04 Burroughs Corp Sensing coded periphery of objects
US3787045A (en) * 1972-06-15 1974-01-22 Prudential Insurance Co Apparatus for controlling movement of objects
US4279555A (en) * 1978-12-29 1981-07-21 Rydell Edmund W F Machine for stacking panels
EP0019723A1 (en) * 1979-05-29 1980-12-10 International Business Machines Corporation Apparatus for aligning pliable sheet material
US4638989A (en) * 1984-09-03 1987-01-27 Sharp Kabushiki Kaisha Device to prevent transport of poorly aligned copy paper
US5074545A (en) * 1985-01-22 1991-12-24 Sharp Kabushiki Kaisha Device for preventing the transport of poorly aligned copy paper
US5113994A (en) * 1990-11-26 1992-05-19 Mueck Edward A Conveyer line straightener
US5531310A (en) * 1994-09-28 1996-07-02 Tetra Laval Holdings & Finance S.A. Mechanism for righting a tipped package along a conveyor line
EP1510480A1 (fr) * 2003-08-25 2005-03-02 Neopost Industrie Dispositif anti-biais pour machine de traitement de courrier
FR2859195A1 (fr) * 2003-08-25 2005-03-04 Neopost Ind Dispositif anti-biais pour machine de traitement de courrier
US20060033260A1 (en) * 2004-08-05 2006-02-16 Jean-Pierre Gregoire Anti-skew device for mail processing machine
US7255342B2 (en) 2004-08-05 2007-08-14 Neopost Industrie Anti-skew device for mail processing machine
CN102189851A (zh) * 2010-01-29 2011-09-21 精工爱普生株式会社 片材检测装置和记录装置
CN102189851B (zh) * 2010-01-29 2014-04-02 精工爱普生株式会社 片材检测装置和记录装置
US20120228819A1 (en) * 2011-03-11 2012-09-13 Primax Electronics Ltd Sheet feeding apparatus

Also Published As

Publication number Publication date
CH439340A (de) 1967-07-15
NL6609042A (enrdf_load_stackoverflow) 1967-01-13
SE302407B (enrdf_load_stackoverflow) 1968-07-15
GB1091993A (en) 1967-11-22

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