[GreenKeys] Is this a typo?

[Jim Haynes]

I have never seen one, nor even a picture of one, but I have a good
guess what a Model 14 non-typing selector is.  I'm guessing it is like
a Model 14 printer but with switch contacts mounted above the ends of
the pull bars so that a contact closes when a particular character
is received.  This would be a forerunner of the SOTUS, lacking the
ability to detect character sequences but that could be done by relays
outside the unit.

In Western Union Plan 21-A the "way" operating table had a 2B printer
with contacts above the pull bars.  "way" means a multistation line
with the ability to poll the stations for traffic and to blind stations
from receiving traffic not intended for them.  In this system the
printer also served to print the messages, but the pullbar contacts
were used to control polling and print blinding.  Relays in the table
detected the character sequences used for these control functions.

Also you will sometimes see pictures of the FRXD machines with pullbar
contacts.

It seems like a simple thing to just mount contacts where the pull bars
can operate them.  But for some reason Walt Zenner got a patent on a
special pull bar, hook shaped, for this purpose. patent 2,323,438
of 1943.  Supposed to provide quick action of the switch, and to not
load the pull bars.

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 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man