[GreenKeys] Unusual telegraph device

Jim Haynes jhhaynes at earthlink.net
Sun Apr 15 19:49:21 EDT 2018


Seems like a good guess.  I'm aware of fax machines that used a wet
chemical paper, but in those the roll of paper came wet and had to be
kept in a humidor.  Wetting the paper just before use seems like a
much better idea.

On Sun, 15 Apr 2018, hwhall at compuserve.com wrote:

> I'm thinking the paper wetting isn't for gum but to activate chemicals
> soaked into the paper & make the paper slightly conductive. Note that the
> schematic the roller & pecker are electrically connected, and the paper
> presumably moves between them, current might have caused chemicals to react
> to leave marks on the paper.
> 
> Wayne
> WB4OGM
> 
> -----Original Message-----
> From: WAYNE <teletypeparts at comcast.net>
> To: GreenKeys <GreenKeys at mailman.qth.net>; Nick
> <creativegardening at hotmail.com>
> Sent: Sun, Apr 15, 2018 3:45 pm
> Subject: Re: [GreenKeys] Unusual telegraph device
> 
> Well, its certainly most interesting!  Where is the 1 key?
> 
> It looks like it prints on a gummed and wet tape roll like a 2B printer. 
> 
> I hope someone knows.  Its certainly in nice condition.
> 
> 73,
> 
> Wayne
> KB1FDW
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