SHATTERPROOF GLASS USED IN SPECTACLES (Nov, 1934)

SHATTERPROOF GLASS USED IN SPECTACLES
Hammer blows cannot shatter the glass in safety spectacles recently developed in England. Under the impact of the metal, the lenses crack as does the safety glass used in automobiles, but the broken fragments will not scatter. The glasses are designed for athletes, workers, and others who run the risk of having their spectacles struck by flying objects.

5 comments
  1. mrchurchill109 says: August 15, 20074:30 am

    Is it me, or does that look just painful?

    Hopefully those lenses weren’t shattered while the guy was wearing them…that hadda hurt.

    Alan

  2. Stannous says: August 15, 20071:43 pm

    “No just hold perfectly still. This won’t hurt a bit…”

    “DAMMIT, I TOLD you not to move!”

  3. mr.beaver says: September 29, 200712:21 am

    if this work, it will be pretty cool.

  4. Phone says: May 30, 20082:14 pm

    Why is this under weird section?

    We have shatterproof glass today. There are vynil stickers glued to both sides of the glass to prevent it from flying off when cracked.

  5. nlpnt says: May 30, 20082:58 pm

    Most eyeglass lenses today aren’t glass at all, but polycarbonate.
    It takes a LOT to break optical-grade polycarbonate; I don’t think it’s even possible to “shatter” it except under lab-test conditions (in real live, the frames’ll bend or break first).

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