[GreenKeys] Teletype Model 26 questions

[Duncan M. Brown]

The AWA Museum just received a very nice M26 with table (Thanks to N4MW). 
It's been a while since I saw a M26 and I have a few questions about it. 
Maybe some of you can help.

1.  There is a toggle switch on the right side of the keyboard.  What was
its function? I do not find any description of it.  Motor power ON/OFF
seems the most logical, although there is the master power switch on the
table.  None of the schematics that I can find shows a power switch on the
base.  On this unit, the base toggle switch is wired to the selector magnet
terminals in order to switch from 20 to 60 ma operation.  This is a
function that would not normally be put on the outside of the unit (but
"some ham" might have done so - and the 20/60 ma wiring is relatively new.)

2.  There is no "Blank" key on this unit, although it is shown in Bul. 158,
Feb 1938.  Was the "Blank" key standard on the M26?

3.  There are two 7" x 8" steel right angle shelf brackets under each side
of the front of the table.  Were these original, or were they added later
to improve the rigidity of the table?

4. There is a 5/8" hole in the top of the table, just behind the ganged
power switch.  Is this original?  If so, what was it used for?

5.  The unit is missing the left hand paper-holder finger spring (holds the
left hand side of the paper against the platen).  Looks like the number is
90973 (from p. 10 of Bul. 1074, Jan 1945).  Anyone have one you could send
me?


Thanks, 

Duncan Brown, K2OEQ

Chief TTY operator & repairman
AWA Electronic Communication Museum
http://www.antiquewireless.org/