[GreenKeys] WBR70

[David Christ]

Ah yes.  Reminds me of the high speed Shepard line printer we had 
prior to 1970.  Had a rotating drum 132 characters wide engraved with 
the alphabet and special characters.  132 hammers all driven by 
discrete electronics supposed to hit the right letter as it came by. 
No integrated circuits then!  Getting it to print the right letters 
was bad enough.  Keeping it from printing wavy lines was well nigh 
impossible.  Then we went to IBM printers with print chains.  Never 
had to work on those.

Does anyone remember the the old accounting printers they used with 
punch cards.  The ones where there was a blade for each column that 
moved up a certain amount for each character?  Fascinating to watch. 
Modern terminals and printers are fast and reliable but not nearly as 
much fun to watch (or frustrating if you were responsible for keeping 
them working)

David K0LUM

PS  Anyone have a CK722 in their junkbox?


At 10:45 PM -0400 10/1/10, Teletypeparts wrote:
>
>
>The USAF had the first Kleinschmidt Comet 300 (?) WX machines that I 
>ever worked on.  They ran at 300 WPM.  Fast rotating drum and 2 
>little moving hammers that hit at exactly the right time.  Always 
>breaking down.  And then the GE Terminets.  Matchstick like fingers 
>with letters on a fast rotating belt.  Another nightmare to work on. 
>
>Enough TTY war stories for tonight.  LOL.
>
>Wayne
>KB1FDW