[GreenKeys] M-15... Auto Line Feed After every printed character

[John, W9DDD]

Open loop would not normally give constant LF.


On 7/20/2025 1:00 PM, john WA4KWK wrote:
> All printing is very clean. With a local loop and keyboard the line 
> feed is after each character typed. Please see attached. Also with the 
> loop current off and the 15 running open it is doing constant line 
> feeds. Not sure if that matters or not. I have attached a pdf and jpg 
> file to show how clean the typing is.
> I want to thank you guys for trying to help me out.
>
> John
> WA4KWK
>
> On Sun, Jul 20, 2025 at 12:31 PM John, W9DDD <w9ddd at tapr.org 
> <mailto:w9ddd at tapr.org>> wrote:
>
>     At the risk of beating a dead horse.
>
>     It would appear to me that the Line Feed Push Bar is supposed to
>     drop down to its stop at the end of each cycle.  That doesn't seem
>     to be happening fully and the Function Bail manages catch it each
>     cycle.  I think that the accurate print excuses the LF Function
>     Bar from being an issue.  If it didn't retract it would interfere
>     with the printing ... unless there's enough loose tolerance to
>     allow it to clear the Vanes, but not let the LF Push Bar end to
>     drop enough to the clear the Function Bail.
>
>     One thing that I don't understand is what ensures that the
>     complete LF linkage returns to its resting position after moving
>     the platen.one line up. I'd have thought there to be a spring
>     somewhere, but I don't see if on figure 21.
>
>
>     On 7/19/2025 8:18 PM, Jim Cooper wrote:
>>     On 19 Jul 2025 at 17:12, john WA4KWK wrote:
>>
>>>     Perfect typing just a line feed after every character.
>>     Keep in mind, we're dealing with MECHANICS with these
>>     monsters ... not electronics!   we can SEE how the mechanics
>>     work, and we can run them in slow motion.
>>
>>     Have you turned off the motor, connected the kbd and the
>>     selector magnet in a local look, turn the motor (in the
>>     proper direction), press a key on the keyboard, keep turning
>>     the motor and WATCH the mechanics ... you should see the
>>     selector magnet select the 5 codes of the key you pressed;
>>     then you should see the transfer levers moving into place
>>     (clearly these are working correctly as you get correct
>>     characters printed); just keep turning the motor BY HAND
>>     and watching.  Watch carefully when the typebar is thrust
>>     toward the platen -- watch the LINKAGE that ratchets the
>>     platen to the next line.  there is a lever that pulls a ratchet
>>     that snaps the platen to the next 'notch' for the next line.
>>
>>     SOMETHING releases that lever ... you need to keep
>>     sending characters from the keyboard and turning the
>>     motor by hand until you can SEE what is tripping that
>>     LF lever ...  then look for the adjustment related to that
>>     lever and ratchet pawl.  It's all mechanical and adjustable.
>>
>>     I just read Wayne's response to you, with the very nice
>>     graphic drawings ... but I'm going to send my response
>>     anyway just to reinforce his suggestions !!
>>
>>     good luck with it.
>>
>>     w2jc
>>
>>
>>
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>
>     -- 
>     ---
>     ----
>     The above comments or recommendations are SWAG. Use at your own risk.
>
>     John, W9DDD
>
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>
>     >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>     https://teletype.net/gksearch
>     >>> 2002-to-present greenkeys archive:
>     http://mailman.qth.net/pipermail/greenkeys/
>     >>> 1998-to-2001 greenkeys archive:
>     http://mailman.qth.net/archive/greenkeys/greenkeys.html
>     >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>     http://comcents.com/tty/greenkeyssearch.html
>
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>

-- 
---
----
The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD