GB537637A - Means for attaching spectacle lenses to gas masks - Google Patents

Means for attaching spectacle lenses to gas masks

Info

Publication number
GB537637A
GB537637A GB520440A GB520440A GB537637A GB 537637 A GB537637 A GB 537637A GB 520440 A GB520440 A GB 520440A GB 520440 A GB520440 A GB 520440A GB 537637 A GB537637 A GB 537637A
Authority
GB
United Kingdom
Prior art keywords
kinks
glass
spectacle lenses
ring
gas masks
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
GB520440A
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.)
RICHARD CHARLES WHEATLEY
WHEWAY OPTICAL CO Ltd
Original Assignee
RICHARD CHARLES WHEATLEY
WHEWAY OPTICAL CO Ltd
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 RICHARD CHARLES WHEATLEY, WHEWAY OPTICAL CO Ltd filed Critical RICHARD CHARLES WHEATLEY
Priority to GB520440A priority Critical patent/GB537637A/en
Publication of GB537637A publication Critical patent/GB537637A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Lens Barrels (AREA)

Abstract

537,637. Goggles. WHEWAY OPTICAL CO., Ltd., and WHEATLEY, R. C. March 20, 1940, No. 5204. [Class 97 (i)] Spectacle lenses are removably carried in the glazed apertured mountings of gas masks by means of a ring having projections, of which at least one is rigid and at least one is resilient. Fig. 2 shows a mounting comprising screwed annular parts c d having flanges e f holding a glass a with the aid of a sealing ring g. A lens is carried in a ring i having a rigid projection k and two spring wire arms m terminating in finger pieces n and having kinks o. The projection k and kinks o are engaged under the flange e by pressing and releasing the pieces n when putting the lens in place, on the outside of the glass a. Fig. 3 shows a modification for insertion on the inner side of the glass wherein circular ends on the arms m engage the mounting and kinks q form the finger pieces. Specification 509,025 is referred to.
GB520440A 1940-03-20 1940-03-20 Means for attaching spectacle lenses to gas masks Expired GB537637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB520440A GB537637A (en) 1940-03-20 1940-03-20 Means for attaching spectacle lenses to gas masks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB520440A GB537637A (en) 1940-03-20 1940-03-20 Means for attaching spectacle lenses to gas masks

Publications (1)

Publication Number Publication Date
GB537637A true GB537637A (en) 1941-06-30

Family

ID=9791663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB520440A Expired GB537637A (en) 1940-03-20 1940-03-20 Means for attaching spectacle lenses to gas masks

Country Status (1)

Country Link
GB (1) GB537637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015990A (en) * 1958-08-11 1962-01-09 Optische Ind De Oude Delft Nv Mounting of optical elements
US4493309A (en) * 1982-09-29 1985-01-15 British Gas Corporation Fuel fired heating element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015990A (en) * 1958-08-11 1962-01-09 Optische Ind De Oude Delft Nv Mounting of optical elements
US4493309A (en) * 1982-09-29 1985-01-15 British Gas Corporation Fuel fired heating element

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