[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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