GB509979A - Improvements in frames for bifocal spectacles - Google Patents

Improvements in frames for bifocal spectacles

Info

Publication number
GB509979A
GB509979A GB33973/38A GB3397338A GB509979A GB 509979 A GB509979 A GB 509979A GB 33973/38 A GB33973/38 A GB 33973/38A GB 3397338 A GB3397338 A GB 3397338A GB 509979 A GB509979 A GB 509979A
Authority
GB
United Kingdom
Prior art keywords
rest
channels
wire
spectacles
rims
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
GB33973/38A
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.)
SANDOR CSEREP
Original Assignee
SANDOR CSEREP
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 SANDOR CSEREP filed Critical SANDOR CSEREP
Publication of GB509979A publication Critical patent/GB509979A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/12—Nose pads; Nose-engaging surfaces of bridges or rims
    • G02C5/122—Nose pads; Nose-engaging surfaces of bridges or rims with adjustable means
    • G02C5/124—Nose pads; Nose-engaging surfaces of bridges or rims with adjustable means for vertically varying the position of the lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

509,979. Spectacles. CSEREP, S. Nov. 22, 1938, No. 33973. Convention date, Nov. 22, 1937. [Class 97 (i)] In a frame for bifocal spectacles, having a rigid bridge connecting the rims and a nose rest behind the bridge and vertically adjustable in relation thereto to enable the lenses to be moved up or down in front of the eyes, the ends of the nose rest have attached thereto wires &c. guided around the peripheries of the rims and held in any adjusted position by their own resilience. As shown, the rear surface of each rim 2 is provided with two channels 5, 6 through which passes the wire 7 connected to the nose rest 4. In the gap between the channels the wire carries a stop 8 having a thumb-piece 9 so that the length of this gap determines the distance through which the rest 4 can be moved. The natural shape of the wire is such that it has to be constrained to enter the channels so that it bears on them frictionally by its own resiliency. By drawing together the thumb-pieces, the rest 4 is lowered so that the lenses are raised in relation to the eyes to facilitate the use of the reading segments 1b.
GB33973/38A 1937-11-22 1938-11-22 Improvements in frames for bifocal spectacles Expired GB509979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU509979X 1937-11-22

Publications (1)

Publication Number Publication Date
GB509979A true GB509979A (en) 1939-07-25

Family

ID=10979410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33973/38A Expired GB509979A (en) 1937-11-22 1938-11-22 Improvements in frames for bifocal spectacles

Country Status (1)

Country Link
GB (1) GB509979A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660924A (en) * 1950-02-17 1953-12-01 Bausch & Lomb Spectacle with vertically adjustable lenses
GB2123976A (en) * 1982-07-16 1984-02-08 Engelhardt Nominees Pty Ltd R Adjustable spectacle frame

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660924A (en) * 1950-02-17 1953-12-01 Bausch & Lomb Spectacle with vertically adjustable lenses
GB2123976A (en) * 1982-07-16 1984-02-08 Engelhardt Nominees Pty Ltd R Adjustable spectacle frame

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