Samuel Nelson

“ The patentee then speaks of certain irregularities that would still exist in the distribution of the heat around the oven, to prevent which he places a plate A in front of the cold-air chamber, so as to form a flue in front, whose mouth is at the same distance from the flue above the oven that the lower end of the pipe i in the back part of the stove is below the oven; and these flues being at all times unobstructed, their action will be uniform, and the heat be equally distributed under all circumstances on the several sides of the oven. ”

“ Several exceptions were taken to the admissibility of evidence offered by the defendants, but without referring to them specially, it will be a sufficient answer to say, that it was competent and relative as showing the state of the art in respect to improvements in the manufacture of cooking stoves at the date of the plaintiff's invention. ”