Great to see this. I worked in the drawing office (1'56") and the engineering department (in the second minute) during my electrical apprenticeship at Mullard Simonstone near Burnley in the UK from 1979 to 1982, as well as many other departments in the glass factory and the CRT assembly factory. All Simonstone apprentices including myself did their first year at Mullard Blackburn a few miles away. We had a great engineering team and could design and build pretty much anything. Simonstone was the largest CRT manufacturer in Europe at that time turning out a CRT every 2 seconds 24/7/365. Sadly the factory closed many years ago and is now a business park. The processes shown in this video are for black and white tubes. Only colour tubes were made during my time there and some of the processes were far more advanced by then.
Thanks for the interesting info Tony, pleased you enjoyed it. I have acquired some silent film shot in the KB Factory in Hastings in the 1960’s I must get around to uploading it.
I was at Simonstone from 57 until 91 when it closed. Apprentice, plant electrical, electronics lab and finally drawing office. Finished on my 50th birthday.
Mullard in the UK was similar to Sylvania in the US in many ways, for example like Sylvania, which was a subsidiary of GTE, Mullard was a subsidiary of Philips. And Mullard's electronics research activities in the UK in all areas of the industry paralleled Sylvania's own extensive involvement in everything from military and aerospace, to computers and industrial electronics. And sadly, both great companies are now history.
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The art of making such excellent documentaries has been lost long before CRT became obsolete. Replaced by flashy intros, short shots and long interviews. Not that anyone would care though what the technology behind their screen is anyway.
What an amazing film! I wonder did anyone ever stop to think if all the heat/ chemical / HT voltage/ repetitious processes had an effect on worker's health? A 17" monochrome CRT is a heavy and explosive glass bulb!
I dunno. The only thing that comes to mind is fatigue and maybe injuries. I doubt that the heat and HT had any effects, unless it was IR heat generated by lamps and gas burners, you don't want to look at IR for too long without IR blocking glasses otherwise you might get glassblower's cataracts. I'm pretty sure that those chemicals eventually caused illnesses and environmental damage, this was made back when wastewater was often untreated and before the days of robots (robots started to see widespread adoption in the 1970s, after ICs began to be mass produced)
Very interesting. Unless I’m mistaken, this was made by my late uncle. He made a vast number of educational films for Mullards/Phillips as well as various documentaries.
great documentary. who knew a decade later all this machinery was obsolete and new machines made to produce them faster with less human interaction. when i was a kid during the 70s i saw how tv's were made at an RCA tube factory, it still fascinates me today
Amazing Video of the tube factory and labs. I still think the vacuum tube has many other poosibilities Thanks for video from me Anthony in Canada , ham radio VE4AKF
These were just monochrome tubes. Would like to see how they applied the the phosphor coating and shadow mask into the manufacture of colour tubes. Great video though, made in the days of the BVA. (British valve association)
There is a Mullard film here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0Qd4IX3wpZk.html it does get on to manufacturing after the cartoon explanation.
My Pops told me that in the early 60s. He also told me I would be able to talk to the people in the car next to me. I told him he was "nuts!" Wish he could have lived to see it, and for me to apologize to him!
My father and grandfather were part of a generation that loved innovation and read lots of popular science magazines where things like cell phones, flat screen TVs, and even the internet were routinely predicted.
The research, design, tooling, resources and labor along with many other costs is a huge investment. Think of all the problems, headaches and countless meetings that go into determining if the whole effort is going to payoff in a given amount of time, plus the consideration of the economic forecast and the rapidly changing technology. That's a big gamble with all kinds of unforeseen problem like design issues showing up and new competition popping up.
in color TVs, if we have shadow mask and precise positions of blue red and green phosporus dots, how do picture streching, skewing, rotating and even resolution change work?
This has more to do with the deflection, geometry, scanning frequency etc. Advancements in the electronics that drive the CRT, rather than the CRT itself..
What was the incentive for producing these documentaries ? Was it for internal training, advertising to customers ? Or advertising to potentialinvestors ? It seems like they show a lot of trade secrets
I think this type of film was for potential tv manufacturers to use their tubes, I have other films on washing machines and cleaners that were obviously meant for promoting the products.
@@andygozzo72 You are right - I too was a bit concerned about what I thought was angular alignment error, but your comment reminded me that the cathode beam contained both electrons and ions; to avoid screen coating damage from heavy ion impact, the cathode's beam was directed down the neck at an off-angle, and the ion-trap ( a small permanent magnet help close to the outside of the neck using a tension spring strap around the neck ) was used to bend the lighter weight electrons back into the proper path for acceleration down toward the screen. ( I guess I always envisioned the heavier ions crashing into the first acceleration anode along the way )
That kink in the gun is intentional. It is done so ions from the cathode don't damage the phosphor - an ion trap. The electrons are steered straight using a magnet called, you guessed it, an ion trap magnet. With Aluminiumised screens the trap was not necessary.
Ther quality of sylvania valves were much better than Mullards. Mullard tv tubes were bad back in the fifties they wernt aluminised, other manufactures were.after a couple years of use they went dim. Our tv then jhad a mw4364 tube in it after 2 years had to be renewed emission was down. Mullard valves seemed to me to be a poor mans valve,. built like british cars using the that´ll do mentality. on the other hand RCA valves wer.e made with great care.- Take a look at a 12ax7 or 12au7 comparer then to a ecc81 or an ecc82.
