Hi John,
Beautiful set up!
Your drive setup is almost identical to that of the later Myford M types (those that Myford took over from Drummond in 1942.)
The first flatbeds like yours are often accused of having flex in the bed but I have seen someone with the same model who builds telescopes. As long as you don't want to cut too much they would seem fine.
The B type (from 1912) beds were carried through the M types, but the headstocks were strengthened; I can cut 1/4in cast iron with my M but my B doesn't like any more than 1/16in.
Brilliant lathes that are very forgiving, sturdy as hell and still producing excellent work after up to 100 years...now that's what I call craftsmanship!
I am not biased in any way...I have 7 all told (3 Bs, 3 Ms and a roundbed)...and nearly enough bits to build another M!

You know how it is...you get the first one (actually my great grandfather's), then you see a cheap one with some extras that you want, then you find out that another one can do some extra work, then you see one that comes with some bits that you were getting ready to make that is the same price as the bits would have cost...and you just can't bear to get rid of any once you know how old they are or where they came from (I have a 1948 Myford M that originally came from de Havilland. It's got the DH plant number plates on). How can you part with provenance like that? Of course, you then have to build another shed to put them in!
This is why my Rider Ericsson project has stalled because I am building a shed for SWMBO so that she can get her crap out of mine so that I have more space...

Never got round to naming them though.

Andy