GB112297A - Process for Manufacturing Multi-focal Eyeglass Lenses. - Google Patents

Process for Manufacturing Multi-focal Eyeglass Lenses.

Info

Publication number
GB112297A
GB112297A GB1868116A GB1868116A GB112297A GB 112297 A GB112297 A GB 112297A GB 1868116 A GB1868116 A GB 1868116A GB 1868116 A GB1868116 A GB 1868116A GB 112297 A GB112297 A GB 112297A
Authority
GB
United Kingdom
Prior art keywords
lenses
grinding
curvature
polishing
multifocal
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
GB1868116A
Inventor
Henry Orford Gowlland
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1868116A priority Critical patent/GB112297A/en
Priority to FR484156D priority patent/FR484156A/en
Publication of GB112297A publication Critical patent/GB112297A/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
    • 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/0012—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor for multifocal lenses
    • 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
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • B24B13/012—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools conformable in shape to the optical surface, e.g. by fluid pressure acting on an elastic membrane

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

112,297. Gowlland, H. O. Dec. 30, 1916. Lenses, grinding and polishing.-Multifocal lenses are produced by grinding one face to a spherical curvature and the other to a multifocal curvature, and smoothing and polishing the face of multifocal curvature by elastic means incapable of changing the curvature. In the grinding- machine shown, the lenses are mounted in holders on a pair of spindles 10 driven in opposite) directions by bands from the shaft of a grinding-wheel 8 of parabolic or spiral &c. section. The spindles may be moved endways to lift the lenses from the wheel, and they may be retained in the elevated position by collars 15 engaging with cams 16. The smoothing is effected by a rotary tool having a resilient surface covered with chain mail, as described in Specification 111,716, and the polishing by a similar tool covered with felt. The resilient surface may be provided by cork or sponge rubber; or it may be a rubber disk under fluid pressure.
GB1868116A 1916-12-30 1916-12-30 Process for Manufacturing Multi-focal Eyeglass Lenses. Expired GB112297A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1868116A GB112297A (en) 1916-12-30 1916-12-30 Process for Manufacturing Multi-focal Eyeglass Lenses.
FR484156D FR484156A (en) 1916-12-30 1917-01-11 Manufacturing process of multifocal lenses for glasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1868116A GB112297A (en) 1916-12-30 1916-12-30 Process for Manufacturing Multi-focal Eyeglass Lenses.

Publications (1)

Publication Number Publication Date
GB112297A true GB112297A (en) 1917-12-31

Family

ID=32484208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1868116A Expired GB112297A (en) 1916-12-30 1916-12-30 Process for Manufacturing Multi-focal Eyeglass Lenses.

Country Status (2)

Country Link
FR (1) FR484156A (en)
GB (1) GB112297A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098028A (en) * 1977-04-21 1978-07-04 American Optical Corporation Adaptor for lens surfacing tool
JPS55164462A (en) * 1979-06-06 1980-12-22 American Optical Corp Head for polishing lens

Also Published As

Publication number Publication date
FR484156A (en) 1917-09-12

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