Simple if you have the type of lathe that can do it, non threaded spindle.
Put the tool in upside down and run in reverse. All the chips get thrown into the pan.
I make for big fittings for BR for the air con units on the trains. I start off with a 2 1/2" hexagon brass bar at £550 a pop and I get nearly £200 for the chips in the pan so it's well worth it for me.
You can also do as Ian says and use the rear tool post if you have one, none of my lathes have.
It does make a lot of difference and brass splinters are one of the worst to get and fester straight away and are hard to get out.