[GreenKeys] Telephoto machines?

[Duncan Brown]

On 28-Jun-15 17:25, Jim Haynes wrote:
> Now you say spiral wire and steel blade type, but there is the matter of
> what kind of recording paper it used.  One kind of recorder used the wet
> chemical paper, so had to keep the unused roll of paper in a humidor
> and run some out before recording could start.  In this kind the electro
> chemical process erodes the blade, so there has to be a mechanism to
> move the blade so that the erosion is uniformly distributed over its
> length.  The other kind uses Western Union Teledeltos paper which is dry,
> so no humidor and I don't believe there's any erosion of the blade 
> either.
>> From the picture it looks like that one might be the wet paper kind,
> but I can tell that clearly.
No paper in the machine, so hard to know what type was used.  But the 
source roll was mounted in a box on the bottom that may have been (at 
least partially) sealed, so it probably was wet-paper type.


> Stewart-Warner was one company manufacturing the wet paper kind in the
> early-mid 1960s.  They were hoping to start a bunch of little offices
> that would send and receive faxes for the public.  Something which was
> not realized until the later generation of fax machines came out.
>
Some of Edward Kleinschmidt's earliest patents where for facsimile 
machines (c1900).  He tried to interest Western Union with the machine, 
telling them "you could just have your customer write out their message 
and you could send it in their own handwriting". WU was not interested - 
until a few decades later when they offered the DeskFax.

Duncan
K2OEQ


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