[GreenKeys] 14 Ribbon help needed.

[Duncan Brown]

For a Teletype Corp. machine, if you have a ribbon without the grommets, 
you can just tie a knot in each end of the ribbon.  Just make sure the 
knot is on the spool side of the ribbon reversing arm.

(Kleinschmidt machines use a special spool and you must wind a new 
ribbon onto the old spool.)

Have fun,

Duncan
K2OEQ


On 7/13/2024 7:53 PM, John Nagle via GreenKeys wrote:
> On 7/13/24 11:18, greenkeys-request at mailman.qth.net wrote:
>> Message: 18
>> Date: Sat, 13 Jul 2024 09:37:03 -0400
>> From: Tom Hunter<tomhenryhunter at gmail.com>
>> To:GreenKeys at mailman.qth.net
>> Subject: [GreenKeys] 14 Ribbon help needed.
>> Message-ID:
>>     <CAJK86919giB6t+5x2NyZO11pTKxav7DKwwpLqqFsuF9G9n7dBw at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> I am playing with my 14 reperf again. when the ribbon is running from 
>> left
>> to right, the left spool is so tight I can not tum it with my fingers 
>> and
>> the typebars cannot press the ribbon against the tape.
>>
>> The 14 Description manual is no help. Can anyone tell what provides back
>> tension on the ribbon spools and How do I reduce it?
>>
>> The ribbon setup is similar to a 15. The 15 description is no help 
>> either.
>
>     The ribbon advance mechanism there is a bit complicated.
>
> Basic checks:
>
>     First, does the ribbon have an eyelet to push the ribbon
> reversing arm? The ribbon has to have an eyelet near each end,
> and those eyelets should always be near the spool, not past the
> ribbon reversing arm.
>
>     Second, to test the ribbon reversing mechanism, turn the
> motor by hand counterclockwise from the fan end and watch the
> mechanism cycle. If you press on one of the ribbon reversing arms
> (Figure 37) while cranking the motor, the ribbon feed shaft
> (figs. 41-42) should slide sideways, shifting gears to disengage
> one ribbon spool shaft and engage the other one. See the bevel
> gears at the end of each ribbon spool shaft? Only one of those
> sets should be engaged at a time.
>
>    The ribbon feed shaft can only slide sideways during one part
> of the machine cycle. If you hand crank the motor, you can find the
> brief part of the cycle where it's unlocked. Check that it moves
> freely. If it's stuck, clean and lubricate the parts involved
> moving it sideways. See Fig. 42. Machines oiled with lubricants
> which evaporate and leave crud behind (like WD-40) will have
> this problem. The Teletype spec specifies a whale oil blend, but
> synthetic 0W-20 motor oil works fine.
>
> If the mechanism is undamaged, this is probably just a lubrication
> problem.
>
> References:
>
>    http://aetherltd.com/public/model14manuals/127B-Iss3.pdf
>    See "Ribbon reverse arm shaft adjustments", etc.,
>    p. 21 in original.
>
>                 John Nagle
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