GB183571A - Improvements in machines for grinding and polishing bi-focal lenses - Google Patents

Improvements in machines for grinding and polishing bi-focal lenses

Info

Publication number
GB183571A
GB183571A GB1188521A GB1188521A GB183571A GB 183571 A GB183571 A GB 183571A GB 1188521 A GB1188521 A GB 1188521A GB 1188521 A GB1188521 A GB 1188521A GB 183571 A GB183571 A GB 183571A
Authority
GB
United Kingdom
Prior art keywords
frame
tool
disc
spring
spindle
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
GB1188521A
Other languages
English (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.)
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
Priority to FR552806D priority Critical patent/FR552806A/fr
Application filed by Individual filed Critical Individual
Priority to GB1188521A priority patent/GB183571A/en
Publication of GB183571A publication Critical patent/GB183571A/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
    • B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • B24B13/065—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes using a template

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
GB1188521A 1921-04-25 1921-04-25 Improvements in machines for grinding and polishing bi-focal lenses Expired GB183571A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR552806D FR552806A (xx) 1921-04-25
GB1188521A GB183571A (en) 1921-04-25 1921-04-25 Improvements in machines for grinding and polishing bi-focal lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1188521A GB183571A (en) 1921-04-25 1921-04-25 Improvements in machines for grinding and polishing bi-focal lenses

Publications (1)

Publication Number Publication Date
GB183571A true GB183571A (en) 1922-07-25

Family

ID=9994456

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1188521A Expired GB183571A (en) 1921-04-25 1921-04-25 Improvements in machines for grinding and polishing bi-focal lenses

Country Status (2)

Country Link
FR (1) FR552806A (xx)
GB (1) GB183571A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228159B (de) * 1959-04-07 1966-11-03 Lunetiers Cottet Soc D Vorrichtung zum Feinschleifen vorgearbeiteter Linsen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228159B (de) * 1959-04-07 1966-11-03 Lunetiers Cottet Soc D Vorrichtung zum Feinschleifen vorgearbeiteter Linsen

Also Published As

Publication number Publication date
FR552806A (xx) 1923-05-08

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