On 09/21/2014 01:51 PM, Tony Duell wrote:
On 09/20/2014 03:12 PM, Tony Duell wrote:
I am not so sure. I don't think that 2 sheets
of normal glass would be as
safe as laminated glass for a car windscreen, for example. I don't know
if the outer faceplate is enoguh to stop the fragments of CRT, and I do
not intend to find out by experiment. I do feel that the adhesive
between the 2 layers does help to keep the bits together if the CRT
implodes, though.
I'm sure that it's certainly not a shatter guard. However, if you
What do you think the purpose of the outer faceplace is? The CRT
manufactuers seem to think it's necessary for safety (as in 'Do not attemp
to remove it') and it's boned all over the screen area, not just at the
edges. To me that certainly suggests a 'laminated glass' type of thing.
I think we could be in violent agreement. I was responding to the
thought that two sheets of separated glass (i.e. a crt faceplate and the
outer guard) would not be shatterproof. Bonded together, yes.
Same in the UK. Older sets had laminaged glass
protection screens (they
were not jsut plain galss), later ones had a moulded perspex cover aound
the front of the CRT.
No perspex faceplates here, but plain old window glass in the early
1950s. Some later sets used it, but keeping the stuff scratch-free was
a problem.
--Chuck