LsFarm wrote:There are underfeed stoker mechanisms still available from the Wilburt company [google them]..
They bought the Iron Fireman company that made a lot of underfeed stokers.
These stokers were retrofit units to convert a hand fed boiler or furnace to stoker feed..
The Wilburt underfeed stoker is NOT inexpensive,
Not expensive is in your opinion. I priced a wilburt stoker a few years back and the quote was $4500.00. Not that it isn't worth it, but finding a boiler to marry it to was challanging. If you work with AHS, their multifuel boiler could be adapted to one of these stokers with some minor modifications.
As far as a Bit stoker stove, I have not seen one. Bit has varied burning characteristics and is difficult to engineer to. There are hand fired models out there.
This company seems to deal with Bit burning appliances- http://www.peasefeedandcoal.com/
You may want to call and talk to them.