Supreme Court of the United States December 15, 1863 (Turrill v. Michigan Southern)

Mr. Justice CLIFFORD

delivered the opinion of the Court.

I. Patentee describes his invention as a new and useful improvement in the common anvil or swedge-bloek, for the! purpose of welding up and re-forming the ends of railroad' rails, when they have exfoliated or become shattered from unequal wear, occasioned by the inequalities of the road. Having made out a prima facie case, the.