[GreenKeys] How The Teleprinter Works- 1940 (11:05 mins)

[Sam Hallas]

Ed Sharpe Archivist for SMECC via GreenKeys wrote:
> Henry - notice too it is in the  early  color process  too...
> this is great !!   Thanks  for sharing it  with us .
> I had not seen the workings  of  one  with a print wheel like that  before.
> In a message dated 1/26/2015 8:21:02 A.M. US Mountain Standard Time,
> henry.eck at statisticalfinance.com writes:
>     This is an instructional film from BT which illustrates some
>     mechanisms in a teleprinter (but not the clutch/selector).
>     https://www.youtube.com/watch?v=HcMHam54EOI

What a clever model of a Creed Model 7!. It shows the complicated way 
the bellcranks select the letters, but it's a pity it doesn't mention 
the start/ stop synchronisation.

It also implies single current working, but as far as I know the British 
Post Office always used double current polar working.

I hope BT Heritage will be uploading more of their historic films. They 
covered the telephone and postal service as well. I look forward to 
seeing more of them.
Their YouTube channel is at
<https://www.youtube.com/user/btletstalk/videos>

Cheers,
Sam