[GreenKeys] M28 to M14 TD adapter

[COURYHOUSE at aol.com]

My 19  you can quick change the  TD  slide it in  slide  it out
handy  feature!  Makes the desk lighter en  moving too  <grin!>
 
Ed#  _www.smecc.org_ (http://www.smecc.org)  
 
 
In a message dated 1/15/2016 1:01:03 P.M. US Mountain Standard Time,  
k1lky68 at gmail.com writes:


On  Jan 15, 2016, at 11:27 AM, Nick England <navy.radio at gmail.com>  wrote:

> I have a unit with a base for a 28TD and motor (LXDB)  sitting on an 
adapter that turns it into a M14 base. ...
> What do these  contacts fit?

Nick,

There is a base unit that would be bolted to  the table that accepts the 
bottom most plate of the thing you show, and had  the mating sliding contacts 
shown in your second picture.  The base was  fitted with some sort of switch 
that closed the loop contacts when you took  the T/D out, so that the loop 
in which the T/D was operating would continue to  be continuous.

If a T/D was malfunctioning or was due for service, it  would take only 
seconds to remove it and replace it with another one.  I  am pretty sure that 
the line closing contacts were arranged so that the loop  was never open even 
during removal or installation of the T/D.    (Looping jacks in patch 
panels do this.) The pictures I have here of Model 14  T/Ds show a finger hold 
place at the very bottom of the tape end that lets you  get a good grip on the 
machine, lift it up and pull it out of the base  unit.  Once a T/D is 
settled onto its base, both the mechanical  dimensions of the base and bottom 
plate, and the weight of the machine ensure  it will stay put.

No doubt some manual for the Model 14 T/D has  diagrams of the base unit, 
but I don’t find it in the one manual I  checked.

I’d guess that many or most of the T/D’s we run into do not  have the 
mating base plate with contacts, because it’s so easy to just pull  the T/D out 
of the base and carry it off without taking the time to remove the  base 
from its installation and include it with the machine.

If I were  to admit that I have a basically unused Model 14 T/D complete 
with base unit  in my storage unit, I’d have to add extra padlocks to protect 
the place.   So, I won’t say anything about that.

Roy

Roy  Morgan
k1lky68 at gmail.com
K1LKY Since  1958

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