Tilley AL 21 glass shattered

Discussion in 'Pressure Lamp Discussion Forum' started by Darryl Durdin, May 9, 2022.

  1. Darryl Durdin

    Darryl Durdin Australia Subscriber

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    Hi fellas, not good news but what causes the globe to shatter, good one moment broken the next , it had been running for an hour before no issues 26036CEC-CE04-48AB-B8C4-CC2A25DC5AF4.jpeg
     
  2. AussiePete

    AussiePete United States Subscriber

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    Sad, very sad mate.
    Maybe the glass was too tight in its frame and when the glass heated up, it expanded and subsequently shattered.
    Just a thought.
     
  3. MYN

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    That's sad.
    I'm just a little curious on the way it shattered. Almost like tempered automotive glass. I've had glass globes that broke during use or while cooling down on lanterns but not in a way like the above.
     
  4. WimVe

    WimVe Subscriber

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    That is sad to see but did you have a original glass and how thight was is mounted?
    It should have some space to expand.
     
  5. paul m

    paul m Subscriber

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    Just checked this and it's 7" x .210" thick DSC00576.JPG
     
  6. Sedgman

    Sedgman Subscriber

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    So sorry to see this @Darryl Durdin
    Have only a leaning towards expansion over time and a tightly held glass. Was it a first time run? Had it been run before for a similar period of time? Had the mantle developed a hole through movement? How much movement had the lantern had in that past hour? These are the things I am wondering about. Like @MYN I am also curious about the manner in which the glass shattered.
    Scares me a bit too as I have only ever run my unit for perhaps 10 minutes and mostly in a shed. I may purchase an automotive safety glass special cut to use and keep the Tilley glass for display. I ponder if this idea would work or if the glass has to be heat resistant. I think in FL6 units I have seen circular cut replacement safety glass.
    Better luck Darryl with a replacement lens.

    iain
     
  7. Tony Press

    Tony Press Netherlands Subscriber

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    @Darryl Durdin

    Did that glass have “Tilley” or some other manufacture’s mark? It looks like windscreen glass…

    Tony
     
  8. Erik Leger

    Erik Leger Germany Subscriber

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    Does not look like heat-resisting glass to me. Borosilicate glass like Suprax or Duran break differently. (I tried it.](*,))
    Have a glassmaker cut a pane of borosilicate glass.
    Judging the way it broke, I think there was a hole in the mantle so a sharp flame was directed towads the glass. This will also damage the best heat-resisting glass.

    Erik
     
  9. Darryl Durdin

    Darryl Durdin Australia Subscriber

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    Hi fellas, the glass was an original Tilley Henson, the glass had some movement it wasn’t tight. The lamp had been idle for 10 or more years, I replaced the gaskets/ seals, I used a generic two tied mantle, it flared up a bit when started but settled down to a good glow.
    I sat it down on the ground and checked on it every now and then, it was good.
    When I went to check on it I could smell the kerosene, I checked it and the globe had shattered, the mantle looks a bit sad and definitely soot inside the lamp and reflector.
    Maybe it had flared up big time, it still had pressure in the tank when released , picture shows some definite holes in mantle. 76A671BD-2E1F-4339-B22C-AA9D5A87580E.jpeg image.jpg
     
  10. Buggerlugs

    Buggerlugs Australia Subscriber

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    That's so sad mate, just terrible news.
    I don't know what else to say but sorry to see it happen.
     
  11. Darryl Durdin

    Darryl Durdin Australia Subscriber

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