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The solution is very simple. The capstan of the Tonschreiber did not run 
off the incoming AC but had an oscillator and amplifier as a servo. It 
could run at any speed from I think 9 to 130 cm/sec.

Richard L. Hess wrote:
> At 07:09 PM 2009-11-03, you wrote:
>> From: Patent Tactics, George Brock-Nannestad
>> ....SNIP.....
>> The story continues. I would not be surprised to learn that northern 
>> Italian
>> records were cut with machines run off 14 Hz or 16 2/3 Hz, which were 
>> in use
>> for traction purposes. Let us see if a type-wri-toon will work here: 
>> ;-) -
>> yes, it did.
>
> Hi, George,
>
> One thing that intrigued me is that the Tonschreiber version of the 
> Magnetophon which was analyzed in depth after WWII by some Army 
> Engineers who appeared to do a good job apparently could work from 
> 25-60 Hz.
>
> Cheers,
>
> Richard
>
>
>
> Richard L. Hess                   email: [log in to unmask]
> Aurora, Ontario, Canada       (905) 713 6733     1-877-TAPE-FIX
> Detailed contact information: http://www.richardhess.com/tape/contact.htm
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