Patent for a new and improved railroad tie. This design "has reference to improvements in railroad-ties of that class in which two metallic pot-sleepers connected transversely by a brace-rod are employed in place of wooden ties for supporting the rails; and the invention consists of two transversely-connected iron pot-sleepers, which are provided with a longitudinal box-shaped center portion, upon which the rail rests, said center portion being made in one piece with the sleeper, and adapted for storing therein signal telegraph wires" (lines 7-17).