GB2080712B - Centering and working gem stones - Google Patents

Centering and working gem stones

Info

Publication number
GB2080712B
GB2080712B GB8117179A GB8117179A GB2080712B GB 2080712 B GB2080712 B GB 2080712B GB 8117179 A GB8117179 A GB 8117179A GB 8117179 A GB8117179 A GB 8117179A GB 2080712 B GB2080712 B GB 2080712B
Authority
GB
United Kingdom
Prior art keywords
centering
working
gem stones
gem
stones
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
GB8117179A
Other versions
GB2080712A (en
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.)
Gersan Ets
Original Assignee
Gersan Ets
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 Gersan Ets filed Critical Gersan Ets
Priority to GB8117179A priority Critical patent/GB2080712B/en
Publication of GB2080712A publication Critical patent/GB2080712A/en
Application granted granted Critical
Publication of GB2080712B publication Critical patent/GB2080712B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/87—Investigating jewels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/16—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs
    • B24B9/162—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs by bruting, i.e. rubbing two precious stones against each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
GB8117179A 1980-06-04 1981-06-04 Centering and working gem stones Expired GB2080712B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8117179A GB2080712B (en) 1980-06-04 1981-06-04 Centering and working gem stones

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8018349 1980-06-04
GB8117179A GB2080712B (en) 1980-06-04 1981-06-04 Centering and working gem stones

Publications (2)

Publication Number Publication Date
GB2080712A GB2080712A (en) 1982-02-10
GB2080712B true GB2080712B (en) 1983-12-21

Family

ID=26275735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8117179A Expired GB2080712B (en) 1980-06-04 1981-06-04 Centering and working gem stones

Country Status (1)

Country Link
GB (1) GB2080712B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184732A (en) * 1985-12-20 1993-02-09 Gersan Establishment Shape sorting
GB8531396D0 (en) * 1985-12-20 1986-02-05 Gersan Ets Sorting
IL82201A0 (en) * 1986-04-14 1987-10-30 Brilcut Patent Working gemstones,and a device for examining gemstones for brutting
IL86762A (en) * 1988-06-16 1991-04-15 Hargem Ltd Centering apparatus for a gemstone
GB8826224D0 (en) * 1988-11-09 1988-12-14 Gersan Anstalt Sensing shape of object
IL92642A (en) * 1989-12-11 1991-11-21 Legziel Brothers Ltd Diamond bruting system
GB9109496D0 (en) * 1990-05-04 1991-06-26 Brilcut Patent Working gemstones
FR2684184B1 (en) * 1991-11-26 1994-02-11 Jacques Pain METHOD FOR MEASURING THE HARDNESS OF A MATERIAL AND DEVICE FOR CARRYING OUT SAID METHOD.
JPH074934A (en) * 1993-02-12 1995-01-10 General Electric Co <Ge> Classification and sorting of crystalline material body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Also Published As

Publication number Publication date
GB2080712A (en) 1982-02-10

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20010603