[GreenKeys] Model 15 kbd

[Jim Haynes]

On Tue, 20 May 2008, Joe Stevens wrote:

> I have two Model 15 machines.  One has a working keyboard but the other has 
> an odd pinion on the keyboard shaft.   It has 25 teeth and won't mesh with 
> the gear in the printer.  There is no number on the pinion.  The shaft is 
> 0.250 inch diameter.  Can anyone supply me with  the correct pinion for my 
> keyboard?  It is Western Union BK34/HE.  (The machine with the correct pinion

Well the W.U. explains it.  All but W.U. Model 15 machines used 7.42
unit code, but W.U. used 7.0 unit code.  So the keyboard shaft has to
turn at a slightly different speed to make the baud speed come out right.
But if you change the gear to the one used for 7.42 code then the
speed will still be wrong because of the different cam sleeve.

Hence I'm not clear on what you are asking for.  If it's a W.U. keyboard
then it will have a W.U. cam sleeve and needs the W.U. gear, and
therefore a W.U. typing unit with the correct mating gear.