William Strong

“ They are admitted, as we have seen, through openings in the arch or top of the furnace, and through the floor of the oven along the flues extending rearward from the furnace to the back part of the oven. But the oven has a floor which separates it from the fire-chamber. The communication with the baking-chamber is by means of flues, short it may be, but admitting the products of combustion into the baking-chamber only at intervals, and always near the side. ”

“ This we regarded as radically different from the original invention, as new matter, for which the reissue was unauthorized. We have seen in this case no reason for changing the opinion. The Ball reissue, therefore, is held to be invalid, and its further consideration may be dismissed from the case. ”