HS Tarm makes good stuff.. I too would like to see photos of the automatic coal feed system,, a stoker... I'm betting it is a standard stoker from another manufacturer, adapted to use in the Tarm boiler..
I'm sure we can get you going.. you may have to take a few pieces off and show more photos,, but there is a wealth of knowledge here on the forum.. we'll get you burning coal !!
Looking forward to the photos..