GB922780A - Apparatus for separating sheets sequentially from a stack - Google Patents

Apparatus for separating sheets sequentially from a stack

Info

Publication number
GB922780A
GB922780A GB2990/61A GB299061A GB922780A GB 922780 A GB922780 A GB 922780A GB 2990/61 A GB2990/61 A GB 2990/61A GB 299061 A GB299061 A GB 299061A GB 922780 A GB922780 A GB 922780A
Authority
GB
United Kingdom
Prior art keywords
roller
rollers
driven
sheet
stack
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
Application number
GB2990/61A
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.)
Grinten Chem L V D
Chemische Fabriek L Van der Grinten NV
Original Assignee
Grinten Chem L V D
Chemische Fabriek L Van der Grinten NV
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 Grinten Chem L V D, Chemische Fabriek L Van der Grinten NV filed Critical Grinten Chem L V D
Publication of GB922780A publication Critical patent/GB922780A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
    • B65H3/5253—Driven retainers, i.e. the motion thereof being provided by a dedicated drive the retainers positioned under articles separated from the top of the pile
    • B65H3/5261—Retainers of the roller type, e.g. rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

922,780. Feeding sheets. CHEMISCHE FABRIEK L. VAN DER GRINTEN N.V. Jan. 25, 1961 [Feb. 2, 1960], No. 2990/61. Class 100 (1). Sheets are separated sequentially from a stack by a pair of opposed friction rollers 1, 4, or belts, which are driven in the same direction, but the member 4 is driven through a slipping clutch which is so adjusted that, when a single sheet passes between the members, the member 4 is driven in the opposite direction by frictional forces exerted by the sheet on the member 4. Fig. 1 shows a stack of sheets 16 on a fixed curved support 15, and a front gate 21 which normally only allows the bottom sheet to pass into the nip of rollers 1, 4. The roller 1 is constantly driven, and a gear on the shaft thereof drives, through an idler gear 6, a gear which is rotatably mounted on the shaft 3 of the roller 4 but coupled thereto by an adjustable slipping clutch. The roller 4 is driven at a faster peripheral speed than the roller 1. When a single sheet passes between the rollers, the sheet is urged over a guide 17 towards feed rollers 18, 19, and the friction exerted by the sheet overcomes the action of the clutch and reverses the direction of rotation of the roller 4. When, however, two superposed sheets enter the nip of the rollers 1, 4, the friction between the two sheets cannot overcome the clutch, and the roller 4 returns the top sheet to the stack: the bottom sheet is then fed by the rollers over the guide 17. The rollers 4, 19 are urged towards the rollers 1, 18, respectively, by gravity, and the roller 18 is driven from the roller 1 by a rope 20 and pulleys. In Fig. 3, sheets 16 are separated from the top of a stack by a friction roller 24 driven from the roller 1 by a rope 25 and pulleys. As before, the roller 4 is driven from the roller 1 through gears and a slipping clutch, and the roller 4 is urged towards the roller 1 by springs 36 and adjustment screws 23. The top sheet is urged by the roller 24 through a gap between a bent lip on a front plate 33 and the roller 1, into the nip between the rollers 1, 4, and the friction exerted by the sheet overcomes the clutch and reverses the rotation of the roller 4, so that the sheet is fed away between curved guides 34, 35. When two superposed sheets pass through the gap, the roller 4 returns the bottom sheet to the stack. The stack is supported on a table 28 which is urged upwardly by a rack bar 31 engaged by a pinion 32 which is driven by a motor through a slipping clutch. The roller 4 in both cases comprises spaced discs, but may be a solid roller : also, the rollers 1, 4 may be replaced by endless friction belts.
GB2990/61A 1960-02-02 1961-01-25 Apparatus for separating sheets sequentially from a stack Expired GB922780A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL247994 1960-02-02

Publications (1)

Publication Number Publication Date
GB922780A true GB922780A (en) 1963-04-03

Family

ID=19752152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2990/61A Expired GB922780A (en) 1960-02-02 1961-01-25 Apparatus for separating sheets sequentially from a stack

Country Status (5)

Country Link
US (1) US3044770A (en)
BE (1) BE599465A (en)
CH (1) CH396952A (en)
GB (1) GB922780A (en)
NL (1) NL247994A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51491B1 (en) * 1966-12-31 1976-01-08
FR2280575A1 (en) * 1974-08-02 1976-02-27 Docutel Corp INDIVIDUAL DOCUMENT TRAINING MECHANISM
US3968959A (en) * 1974-12-31 1976-07-13 International Business Machines Corporation Document transport and separating device
GB2150921A (en) * 1983-12-07 1985-07-10 R Clark Dubois Automatic shoot feeding device, particularly for copiers and other machines having sheet transport mechanisms and assemblies therewith

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL247689A (en) * 1960-01-25
US3108801A (en) * 1960-06-28 1963-10-29 Nederlanden Staat Device for conducting postal articles, forms or the like
US3295139A (en) * 1963-10-09 1966-12-27 Universal Match Corp Depository machine
CH515126A (en) * 1967-08-11 1971-11-15 Ruenzi Kurt Separation device for stacked sheets
US3594549A (en) * 1968-06-05 1971-07-20 Scan Data Corp Document handler
US3584867A (en) * 1969-05-19 1971-06-15 Us Navy Card input hopper
US3614089A (en) * 1969-06-16 1971-10-19 Copystatics Mfg Corp Automatic original feeder for copying machine
DE2104166B1 (en) * 1971-01-29 1972-08-24 Mathias Baeurle Gmbh
US3754754A (en) * 1971-12-03 1973-08-28 Honeywell Inf Systems Document separator for accidental bunching
US4105199A (en) * 1975-12-22 1978-08-08 Nippon Electric Co., Ltd. Paper feeder comprising a selectively drivable resilient body in frictional contact with a feed roller
DE2850185C2 (en) * 1978-11-18 1982-12-16 Nixdorf Computer Ag, 4790 Paderborn Take-off device for sheet material
US4420149A (en) * 1979-01-29 1983-12-13 Savin Corporation Automatic original document feeder for electrophotographic copier
CA1145783A (en) * 1979-06-27 1983-05-03 Savin Corporation Friction paper feeder
JPS5961138U (en) * 1982-10-15 1984-04-21 株式会社リコー Paper feeding device
US4548395A (en) * 1983-02-04 1985-10-22 Donald L. Snellman Microfiche feeder
JPS59149247A (en) * 1983-02-16 1984-08-27 Hitachi Ltd Automatic paper feeder
US4674735A (en) * 1983-12-07 1987-06-23 R. Clark DuBois Automatic sheet feeder for copiers and other machines having sheet transport mechanisms and assemblies therewith
US4607833A (en) * 1984-09-14 1986-08-26 Bell & Howell Company Demand document feeder
JPS62205943A (en) * 1986-03-04 1987-09-10 Minolta Camera Co Ltd Automatic paper feeder
US4934684A (en) * 1988-04-05 1990-06-19 National Computer Systems, Inc. Sheet picking mechanism
US4884796A (en) * 1988-05-26 1989-12-05 Daboub Henry A Singulator for document feeder
JP2740215B2 (en) * 1988-12-20 1998-04-15 三洋電機株式会社 Thermal transfer recording device
US5195738A (en) * 1989-06-30 1993-03-23 National Computer Systems, Inc. Single sheet picking and transport mechanism
US5815592A (en) * 1990-02-05 1998-09-29 Cummins-Allison Corp. Method and apparatus for discriminating and counting documents
US5207788A (en) * 1991-04-04 1993-05-04 Cummins-Allison Corp. Feed arrangement for currency handling machines
US5333848A (en) * 1993-09-29 1994-08-02 Xerox Corporation Retard feeder
JPH0859005A (en) * 1993-10-28 1996-03-05 Ricoh Co Ltd Paper separating device
US5687963A (en) * 1994-11-14 1997-11-18 Cummison-Allison Corp. Method and apparatus for discriminating and counting documents
US5730439A (en) * 1996-07-15 1998-03-24 Pitney Bowes Inc. Sheet feeder
US6798899B2 (en) 2001-01-04 2004-09-28 Cummins-Allison Corp. Document feeding method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762623A (en) * 1952-05-10 1956-09-11 Pitney Bowes Inc Sheet feeding device
US2813717A (en) * 1955-05-11 1957-11-19 Cummins Chicago Corp Feeding arrangement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51491B1 (en) * 1966-12-31 1976-01-08
FR2280575A1 (en) * 1974-08-02 1976-02-27 Docutel Corp INDIVIDUAL DOCUMENT TRAINING MECHANISM
US3968959A (en) * 1974-12-31 1976-07-13 International Business Machines Corporation Document transport and separating device
GB2150921A (en) * 1983-12-07 1985-07-10 R Clark Dubois Automatic shoot feeding device, particularly for copiers and other machines having sheet transport mechanisms and assemblies therewith

Also Published As

Publication number Publication date
NL247994A (en)
CH396952A (en) 1965-08-15
US3044770A (en) 1962-07-17
BE599465A (en) 1961-05-16

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