GB1511549A - Grading apparatus - Google Patents

Grading apparatus

Info

Publication number
GB1511549A
GB1511549A GB40208/75A GB4020875A GB1511549A GB 1511549 A GB1511549 A GB 1511549A GB 40208/75 A GB40208/75 A GB 40208/75A GB 4020875 A GB4020875 A GB 4020875A GB 1511549 A GB1511549 A GB 1511549A
Authority
GB
United Kingdom
Prior art keywords
rows
roller elements
projections
roller
gaps
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
GB40208/75A
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.)
ST NICHOLAS COURT FARMS Ltd
Original Assignee
ST NICHOLAS COURT FARMS Ltd
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 ST NICHOLAS COURT FARMS Ltd filed Critical ST NICHOLAS COURT FARMS Ltd
Priority to GB40208/75A priority Critical patent/GB1511549A/en
Publication of GB1511549A publication Critical patent/GB1511549A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • B07B1/155—Roller screens using corrugated, grooved or ribbed rollers the rollers having a star shaped cross section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers

Landscapes

  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

1511549 Roller separators ST NICHOLAS COURT FARMS Ltd 22 Dec 1976 [1 Oct 1975] 40208/75 Heading B2H An apparatus for grading objects, e.g. fruits and vegetables, into two sizes comprises at least two parallel rows 1, 4 of rotatable roller elements 2, 5, the outer peripheries of the roller elements being so shaped and the rows being so spaced apart that a gap 9 of predetermined cross-sectional area is defined between two adjacent rollers in one row and two adjacent rollers in the other row, and one row of roller elements carrying a number of projections 7 which revolve with the elements and project into the gaps as they do so. Thus the revolving projections tend to lift larger objects from the grading gaps 9 and keep the latter clear. The roller elements 2, 5 are in the form of plastics or rubber mouldings octagonal in shape and are carried on rotatable spindles 3, 6. The projections 7 are finger-like with a curved upper surface 8 and are secured to the rotatable spindle 6 so that they revolve with the roller elements 5. The apparatus includes a number of rows of roller elements with the projections 7 provided on alternate rows. The shapes of the roller elements 2 and 5 and the spacing apart of the spindles 3 and 6 can be varied so that gaps of increasingly larger cross-sectional area are obtained in the direction of travel of the objects to be graded. Alternatively gaps of the same area could be arranged between a number of rows and increase in subsequent rows. In a modification Figs. 3 and 4 (not shown), moulded ear-shaped projections (11) are provided on one or each side of each roller element 5.
GB40208/75A 1976-12-22 1976-12-22 Grading apparatus Expired GB1511549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB40208/75A GB1511549A (en) 1976-12-22 1976-12-22 Grading apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40208/75A GB1511549A (en) 1976-12-22 1976-12-22 Grading apparatus

Publications (1)

Publication Number Publication Date
GB1511549A true GB1511549A (en) 1978-05-24

Family

ID=10413748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40208/75A Expired GB1511549A (en) 1976-12-22 1976-12-22 Grading apparatus

Country Status (1)

Country Link
GB (1) GB1511549A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480068A1 (en) * 1980-04-14 1981-10-16 Inst Mekh Selskogo Rotary separator for agricultural harvester - has sectional structure, with each section having discs mounted on shafts rotating at different speeds
EP0285226A1 (en) * 1987-03-31 1988-10-05 TS Agro Products Im-Export B.V. Grading apparatus for agricultural, horticultural and other articles
DE3926451C1 (en) * 1989-08-10 1991-03-21 Aulmann & Beckschulte Maschinenfabrik Gmbh & Co Kg, 5275 Bergneustadt, De Roll grizzly for sizing minerals - has sizing openings kept clear during screening using lifters to eject lumps jamming in holes
WO1994001990A1 (en) * 1992-07-16 1994-02-03 Richard Pearson Limited A star wheel and a separator incorporating a star wheel
GB2292874A (en) * 1994-09-12 1996-03-13 Pearson Richard Ltd Waste crop separator
WO2002062493A1 (en) * 2001-02-09 2002-08-15 Pal Srl Apparatus and method to separate elements or materials of different sizes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480068A1 (en) * 1980-04-14 1981-10-16 Inst Mekh Selskogo Rotary separator for agricultural harvester - has sectional structure, with each section having discs mounted on shafts rotating at different speeds
EP0285226A1 (en) * 1987-03-31 1988-10-05 TS Agro Products Im-Export B.V. Grading apparatus for agricultural, horticultural and other articles
DE3926451C1 (en) * 1989-08-10 1991-03-21 Aulmann & Beckschulte Maschinenfabrik Gmbh & Co Kg, 5275 Bergneustadt, De Roll grizzly for sizing minerals - has sizing openings kept clear during screening using lifters to eject lumps jamming in holes
WO1994001990A1 (en) * 1992-07-16 1994-02-03 Richard Pearson Limited A star wheel and a separator incorporating a star wheel
GB2292874A (en) * 1994-09-12 1996-03-13 Pearson Richard Ltd Waste crop separator
GB2292874B (en) * 1994-09-12 1998-07-01 Pearson Richard Ltd A device for separating materials
WO2002062493A1 (en) * 2001-02-09 2002-08-15 Pal Srl Apparatus and method to separate elements or materials of different sizes
US6986425B2 (en) 2001-02-09 2006-01-17 Pal Srl Apparatus and method to separate elements or materials of different sizes

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee