I am currently looking at rebuilding an old Holland Automatic Coal Burner which was taken out of service in the 30's. Some of the parts have to be remade, but I think the bottom iron grate disk is missing, and I cannot find anything that resembles an ash collection hopper. The ash removal tube and elevator are present. Does anyone have any information such as photos or assembly drawings on a similar unit? Photos are attached. Any help would be greatly apperciated.