GB930876A - Contact lens blank - Google Patents

Contact lens blank

Info

Publication number
GB930876A
GB930876A GB2766261A GB2766261A GB930876A GB 930876 A GB930876 A GB 930876A GB 2766261 A GB2766261 A GB 2766261A GB 2766261 A GB2766261 A GB 2766261A GB 930876 A GB930876 A GB 930876A
Authority
GB
United Kingdom
Prior art keywords
contact lens
blank
tool
lens blank
chuck
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
GB2766261A
Inventor
Henry J Kratt
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.)
Plastic Contact Lens Co
Original Assignee
Plastic Contact Lens Co
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 Plastic Contact Lens Co filed Critical Plastic Contact Lens Co
Priority to GB2766261A priority Critical patent/GB930876A/en
Publication of GB930876A publication Critical patent/GB930876A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/36—Chucks with means for adjusting the chuck with respect to the working-spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

930,876. Machine tool details. PLASTIC CONTACT LENS CO. July 31, 1961, No. 27662/61. Class 83 (3). A contact lens blank has a flange 20 and a conical surface 22, and is formed in a lathe from a plastic rod R, by a cutting tool 24 and a parting off tool 26. The blank is held on its conical surface in a chuck T<SP>1</SP>, and the partspherical portion 48 is cut by a swinging tool 42. Surface 22 may be spherical or cylindrical, and the blank seat in the chuck may be counterbored.
GB2766261A 1961-07-31 1961-07-31 Contact lens blank Expired GB930876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2766261A GB930876A (en) 1961-07-31 1961-07-31 Contact lens blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2766261A GB930876A (en) 1961-07-31 1961-07-31 Contact lens blank

Publications (1)

Publication Number Publication Date
GB930876A true GB930876A (en) 1963-07-10

Family

ID=10263228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2766261A Expired GB930876A (en) 1961-07-31 1961-07-31 Contact lens blank

Country Status (1)

Country Link
GB (1) GB930876A (en)

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