GB662685A - Improvements in or relating to photoelectric sorters - Google Patents

Improvements in or relating to photoelectric sorters

Info

Publication number
GB662685A
GB662685A GB1396749A GB1396749A GB662685A GB 662685 A GB662685 A GB 662685A GB 1396749 A GB1396749 A GB 1396749A GB 1396749 A GB1396749 A GB 1396749A GB 662685 A GB662685 A GB 662685A
Authority
GB
United Kingdom
Prior art keywords
photo
cell
almonds
aperture
combination
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
GB1396749A
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.)
ELECTRIC SORTING MACHINE COMPA
Original Assignee
ELECTRIC SORTING MACHINE COMPA
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 ELECTRIC SORTING MACHINE COMPA filed Critical ELECTRIC SORTING MACHINE COMPA
Priority to GB1396749A priority Critical patent/GB662685A/en
Publication of GB662685A publication Critical patent/GB662685A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain

Landscapes

  • Sorting Of Articles (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

662,685. Sorting photo-electrically STEVENS, A. H. (Electric Sorting Machine Co.). May 25, 1949, No. 13967/49. Class 40 (iii). Images of articles to be sorted photo-electrically are projected into a plane between the article and the photo-cell and a scanning device in this plane exposes the cell to successive portions of the image. As shown, almonds for example are lifted one at a time from a supply 34 by suction tubes 13 carried on the periphery of a wheel 12. Part of the periphery of this wheel passes through an illuminated chamber 14 in which the almond is compared with the background of a replaceable plate 33 (Fig. 3). Light reflected from the face 31 of the beam passes through a lens system 15 (which may be an achromatic combination) and is brought to a focus at the optical centre of a further lens combination 17, 18. The purpose of this combination is to defocus the light from the bean on to the photo-cell so that irregularities of photo-cell sensitivity are ineffective. At the optical centre of this lens combination is situated a scanning plate 16 having near its edge holes 44 so that as the almond is traversed horizontally the hole examines successive vertical bands, the disc rotating at such a speed that the bands overlap. To prevent the cell receiving pulses as a result of receiving light first from one aperture and then two, bars 47, 48 are provided which are relatively angularly adjustable, the top bar being friction held and the lower screw adjusted so that as one aperture enters the space between the bars the other leaves it and the photo-cell is always receiving light from an area equal to that of one aperture. Almonds in which one spot differs in colour from the rest or which differ in colour from the background are rejected by a pusher 21 into a trough 23. Good almonds enter a trough 25. The scanning disc may be replaced by a reciprocating plate or a mirror drum, Figs. 13 and 14 (not shown). Examples of suitable ejector control mechanism are given in U.S.A. Specifications 2,131,095, 2,152,758, 2,325,665, and 2,244,826.
GB1396749A 1949-05-25 1949-05-25 Improvements in or relating to photoelectric sorters Expired GB662685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1396749A GB662685A (en) 1949-05-25 1949-05-25 Improvements in or relating to photoelectric sorters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1396749A GB662685A (en) 1949-05-25 1949-05-25 Improvements in or relating to photoelectric sorters

Publications (1)

Publication Number Publication Date
GB662685A true GB662685A (en) 1951-12-12

Family

ID=10032624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1396749A Expired GB662685A (en) 1949-05-25 1949-05-25 Improvements in or relating to photoelectric sorters

Country Status (1)

Country Link
GB (1) GB662685A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074885B (en) * 1960-02-04 Gewerkschaft Brigitta Hannover Device for reading out microfossils from sediments or finely crushed rock
DE1135201B (en) * 1959-04-22 1962-08-23 Meyer Geo J Mfg Co Control device for the detection of foreign bodies in a translucent container with means for illuminating a zone of the container to be controlled

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074885B (en) * 1960-02-04 Gewerkschaft Brigitta Hannover Device for reading out microfossils from sediments or finely crushed rock
DE1135201B (en) * 1959-04-22 1962-08-23 Meyer Geo J Mfg Co Control device for the detection of foreign bodies in a translucent container with means for illuminating a zone of the container to be controlled

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