GB147708A - Improvements in or relating to a machine for grinding bevels on meniscus lenses - Google Patents

Improvements in or relating to a machine for grinding bevels on meniscus lenses

Info

Publication number
GB147708A
GB147708A GB19698/20A GB1969820A GB147708A GB 147708 A GB147708 A GB 147708A GB 19698/20 A GB19698/20 A GB 19698/20A GB 1969820 A GB1969820 A GB 1969820A GB 147708 A GB147708 A GB 147708A
Authority
GB
United Kingdom
Prior art keywords
grinding
templet
abutment
lens
bevels
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
GB19698/20A
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.)
Optische Anstalt CP Goerz AG
Original Assignee
Optische Anstalt CP Goerz AG
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
Priority to DESCH54844D priority Critical patent/DE358578C/en
Priority claimed from DESCH54637D external-priority patent/DE356476C/en
Application filed by Optische Anstalt CP Goerz AG filed Critical Optische Anstalt CP Goerz AG
Priority to GB19698/20A priority patent/GB147708A/en
Priority to FR519401A priority patent/FR519401A/en
Publication of GB147708A publication Critical patent/GB147708A/en
Expired legal-status Critical Current

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
    • 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
    • B24B9/08—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 glass
    • B24B9/14—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 glass of optical work, e.g. lenses, prisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

147,708. Rushen, P. C., (Optische Anstalt C. P. Goerz Akt.-Ges.). July 8, 1920. Bevelling.-A device for grinding two bevels at right-angles to each other on the edges of meniscal lenses comprises a templet q of curvature corresponding to that of the lens h, and having an outline corresponding to the intersection of the bevels to be cut, mounted on the lens-holder shaft and adapted to roll against an abutment disposed parallel to the grinding-plane. The abutment has two surfaces k, i parallel to the grinding- plane of the grinding-wheel l, when one of the surfaces k, i is worn, the other may be used. In machines in which the work-holder is oscillated to and from the grinding-wheel about an axis parallel to the axis of the work-holder, the abutment surface is curved, to a radius of curvature agreeing with that of the grinding-wheel, in a plane at right-angles to the direction in which the point of contact of the templet travels. Instead of making the outside edges of the templet co-operate with the abutment k or i, the templet may be bevelled to agree with the bevel to be produced on the lens.
GB19698/20A 1919-03-03 1920-07-08 Improvements in or relating to a machine for grinding bevels on meniscus lenses Expired GB147708A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DESCH54844D DE358578C (en) 1919-03-03 Device for grinding two facets at an angle to one another on oval glasses with a curved shape (menisci)
GB19698/20A GB147708A (en) 1919-03-03 1920-07-08 Improvements in or relating to a machine for grinding bevels on meniscus lenses
FR519401A FR519401A (en) 1919-03-03 1920-07-08 Device for cutting two facets in oval glasses for spectacles, etc.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE519401X 1919-03-03
DESCH54637D DE356476C (en) 1919-03-03 1919-03-04 Device for grinding two facets at an angle to one another on oval glasses with a curved shape (menisci)
GB19698/20A GB147708A (en) 1919-03-03 1920-07-08 Improvements in or relating to a machine for grinding bevels on meniscus lenses

Publications (1)

Publication Number Publication Date
GB147708A true GB147708A (en) 1921-10-10

Family

ID=27207182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19698/20A Expired GB147708A (en) 1919-03-03 1920-07-08 Improvements in or relating to a machine for grinding bevels on meniscus lenses

Country Status (1)

Country Link
GB (1) GB147708A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674068A (en) * 1949-08-20 1954-04-06 American Optical Corp Bevel edging machine
US4713912A (en) * 1985-05-08 1987-12-22 Georges Zoueki Lens and pattern holder
CN105026106A (en) * 2013-03-08 2015-11-04 埃西勒国际通用光学公司 Device for cutting an ophthalmic lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674068A (en) * 1949-08-20 1954-04-06 American Optical Corp Bevel edging machine
US4713912A (en) * 1985-05-08 1987-12-22 Georges Zoueki Lens and pattern holder
CN105026106A (en) * 2013-03-08 2015-11-04 埃西勒国际通用光学公司 Device for cutting an ophthalmic lens

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