IT8322408A0 - EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS OBTAINED SO. - Google Patents

EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS OBTAINED SO.

Info

Publication number
IT8322408A0
IT8322408A0 IT8322408A IT2240883A IT8322408A0 IT 8322408 A0 IT8322408 A0 IT 8322408A0 IT 8322408 A IT8322408 A IT 8322408A IT 2240883 A IT2240883 A IT 2240883A IT 8322408 A0 IT8322408 A0 IT 8322408A0
Authority
IT
Italy
Prior art keywords
gems
cutting
equipment
spherical facets
facets
Prior art date
Application number
IT8322408A
Other languages
Italian (it)
Other versions
IT1168707B (en
IT8322408A1 (en
Inventor
Giovanni Colliva
Original Assignee
Giovanni Colliva
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 Giovanni Colliva filed Critical Giovanni Colliva
Publication of IT8322408A0 publication Critical patent/IT8322408A0/en
Priority to IT22408/83A priority Critical patent/IT1168707B/en
Priority to IL69576A priority patent/IL69576A/en
Priority to DE19833332673 priority patent/DE3332673A1/en
Priority to NL8303189A priority patent/NL8303189A/en
Priority to IE686/84A priority patent/IE55064B1/en
Priority to GB08407316A priority patent/GB2144622B/en
Priority to IN255/DEL/84A priority patent/IN160559B/en
Publication of IT8322408A1 publication Critical patent/IT8322408A1/en
Priority to US06/829,460 priority patent/US4686795A/en
Application granted granted Critical
Publication of IT1168707B publication Critical patent/IT1168707B/en
Priority to US07/060,015 priority patent/US5003791A/en

Links

Classifications

    • 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/02—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
    • 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
    • B24B9/168—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 grinding peripheral, e.g. conical or cylindrical, surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Adornments (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
IT22408/83A 1982-09-16 1983-08-03 EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS SO OBTAINED IT1168707B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
IT22408/83A IT1168707B (en) 1983-08-03 1983-08-03 EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS SO OBTAINED
IL69576A IL69576A (en) 1982-09-16 1983-08-28 Apparatus for the cutting of spherical-faceted gems and gems thus obtained
DE19833332673 DE3332673A1 (en) 1982-09-16 1983-09-10 GEM GRINDING DEVICE
NL8303189A NL8303189A (en) 1982-09-16 1983-09-15 APPARATUS FOR GRINDING GEMSTONES AND CUT GEMSTONES.
IE686/84A IE55064B1 (en) 1983-08-03 1984-03-20 Gemstones and apparatus for their lapidation
GB08407316A GB2144622B (en) 1983-08-03 1984-03-21 Gemstones and apparatus for their lapidation
IN255/DEL/84A IN160559B (en) 1983-08-03 1984-03-22
US06/829,460 US4686795A (en) 1982-09-16 1986-02-12 Principles and appliances for cutting of spherical-faceted gems and gems thus obtained
US07/060,015 US5003791A (en) 1982-09-16 1987-06-09 Principles and appliances for the cutting of spherical-faceted gems and gems thus obtained

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT22408/83A IT1168707B (en) 1983-08-03 1983-08-03 EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS SO OBTAINED

Publications (3)

Publication Number Publication Date
IT8322408A0 true IT8322408A0 (en) 1983-08-03
IT8322408A1 IT8322408A1 (en) 1985-02-03
IT1168707B IT1168707B (en) 1987-05-20

Family

ID=11195907

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22408/83A IT1168707B (en) 1982-09-16 1983-08-03 EQUIPMENT FOR CUTTING GEMS WITH SPHERICAL FACETS AND GEMS SO OBTAINED

Country Status (4)

Country Link
GB (1) GB2144622B (en)
IE (1) IE55064B1 (en)
IN (1) IN160559B (en)
IT (1) IT1168707B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB581619A (en) * 1943-09-21 1946-10-18 Linde Air Prod Co Improvements in synthetic gem bodies and their manufacture
GB697804A (en) * 1949-12-21 1953-09-30 Union Carbide & Carbon Corp Improvements in and relating to the manufacture of synthetic corundum containing titanium
FR1564878A (en) * 1968-03-13 1969-04-25
IL39936A (en) * 1971-07-30 1975-04-25 De Beers Ind Diamond A diamond particle particularly for use in heat sinks
BE793007A (en) * 1971-12-20 1973-06-19 Union Carbide Corp PROCESS FOR MODIFYING THE APPEARANCE OF CORUNDUM CRYSTALS AND CRYSTALS THUS OBTAINED
US3742731A (en) * 1972-06-08 1973-07-03 Queensbury Opal Co Ltd Gem having light piping fibres with cores of high refractve index and clad layers of lower refractive index
IL58834A (en) * 1978-12-06 1982-12-31 Clarke Roger Maxwell Gemstone and method and device for cutting it

Also Published As

Publication number Publication date
IT1168707B (en) 1987-05-20
IN160559B (en) 1987-07-18
IT8322408A1 (en) 1985-02-03
GB2144622B (en) 1987-01-14
IE840686L (en) 1985-02-03
GB2144622A (en) 1985-03-13
GB8407316D0 (en) 1984-04-26
IE55064B1 (en) 1990-05-09

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19930831