[GreenKeys] Stunt box

[John Nagle]

On 8/19/2011 4:58 PM, greenkeys-request at mailman.qth.net wrote:
> Hi again,
>>  ?
>>  I have been wondering just what a "stunt box" is and how it is used. From
>>  what I have gathered, it is a mechanical device that is driven by the main
>>  motor in a 28, and responds to certain signals coming through the loop. ?
>>  I would love to know more about this, what it could do, how it was used,
>>  and if there are any left in the collector world. ?
>>  Thanks again!
>>  ?
>>  Joe

    It's a mechanical implementation of a state machine parser.
It parses incoming character streams, looking for short
sequences of matches.  The output can be sent to any of
a Teletype's mechanical functions, or to electrical contacts
for external functions.

					John Nagle