dinary circumstances in the scend in a spiral down the sides of the cone. At the with the fuel. The air for combustion comes as much atmosphere of the room, and, of course, is an element bottom of the cone a valve is placed, by which the ma- as possible from below and through the grate bars. of… … Fig. 1 also. The becoming well un- AUTOMATIC SAWDUST FEED FOR FURNACES, main pipes are derstood and ap- carried the length preciated that of the mill in lines corresponding generally with the with honest and intelligent management a good min- ply pipes as desired. In Fig. 4 this arrangement is long…
Patents · Munn · Scientific American · Colored · Vessels built · Hot water · Supreme Court · Post office · Illustration represents · Express money · Years ago · American supplement · Feet long
Internet Archive · Public domain (published before 1931). Free to use for anything.
