Tondeur v. Stewart

This suit is upon’ letters patent No. 258,156, dated May 16, L882, granted to the plaintiff for improvements in glass-annealing furnaces. The patent, which relates especially to the annealing of window-glass, shows a flattening furnace, having four flattening stones mounted on a circular revolving table or wheel, and a continuous and straight annealing chamber, tunnel, or leer, running directly from llie flattening furnace; the heated air from the flattening oven passing, by a clear draught, into and through the leer, and finally escaping at its outer end. Extending longitudinally through the…