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  1. #1
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    Default John Tann Isolator Boltwork

    John Tann made an isolator boltwork system at one stage but discontnued it, whereas Chubb, of course, continued with theirs.

    Does anybody have any details of the Tann system?

  2. #2
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    I have seen the Ratner one, but not the Tann one, do you have any info as to how it worked or what it was fitted to?

  3. #3
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    I wonder if it was Ratner. Maybe my memory is failing me again.

  4. #4
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    Quote Originally Posted by Gary Stephenson View Post
    I have seen the Ratner one, but not the Tann one, do you have any info as to how it worked or what it was fitted to?
    Gary what's the Ratner version like?

  5. #5
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    Quote Originally Posted by Huw Eastwood View Post
    Gary what's the Ratner version like?
    Don't know of any Tann version of an isolator boltwork.

    This is the Ratner Lee-Matic :-

    Click image for larger version. 

Name:	Ratner LeeMatic.jpg 
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ID:	17322 and Patent illustration. Click image for larger version. 

Name:	Ratner LeeMatic.jpg 
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ID:	17323

  6. #6
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    Thanks safeman, Gary mentioned the Ratner Lee-Matic recently in a different post and I wondered what it referred to. Have seen a real mixture of Ratner's but have never seen one of those.

  7. #7
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    I have seen a couple of different ones now, but the first one was only about a year ago, I was called out to drill open a faulty Ratner strong room door that felt like it had a boltwork disconnect, it was a bit puzzling at first as old Ratner stuff I good heavy engineering, so don't expect parts to break , figured it out though. Clever simple mechanism, even the bank staff didn't know strongroom had this feature, hence the lockout.
    This is the nightsafe;
    Attached Thumbnails Attached Thumbnails WP_20170217_005.jpg   WP_20170217_006.jpg  

  8. #8
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    more pics
    Attached Thumbnails Attached Thumbnails WP_20170217_008.jpg  

  9. #9
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    Thanks for those pictures Safeman and Gary. A very nice simple idea.

  10. #10
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    Isn't it amazing just how simple that is and yet it does the job so effectively. What's also surprising is the patent drawing hints at pretty solid parts, U-shape casting and cast/machined block for the carrier and link etc, and yet Gary's photos show just how easy it was achieved with a folded brass channel and very basic parts. Hats off to Ratner for that, as much as we all love Chubb's legendary Isolators the cost and complexity of both Chubb's designs was stratospheric in comparison.

    Was that style unique to the Lee-Matics I wonder, of all the Ratners I've never seen one with those hinges or the distinctive shaped door pull and handle. Cheers again both for posting these.
    Last edited by Huw Eastwood; 17-03-17 at 09:42 AM.

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