Summary

Peter Vivian Daniel Stimpson v. Baltimore and Susquehanna Railroad Company…

It is not, then, strictly true, that, in the demarcation of the line that separates the court and jury, it is not the province of the court to deal with facts inferentially. And why do you adopt the analogy to a special verdict rather than to a demurrer to evidence, when you come to assign a place to a 'case stated' in the technical vocabulary? The court must look to the facts to determine whether the invention in the one case is the invention in the other case; but that is not finding facts. It is mere construction, which the judicial mind is always employed in making.
Source: Wikisource

Peter Vivian Daniel Stimpson v. Baltimore and Susquehanna Railroad Company…

What we say is, that the using of one groove is a mere evasion, a mere colorable claim to invention. If the only object of our invention was the mere sinking of the railway in order to remove an obstacle from ordinary vehicles, why, we should have patented only the sinking of the railway. But it is not so. We claim the sinking of the road in connection with the grooves for the reception of the flanches, in order to accomplish the safety of the cars, and their being kept in their course, especially at turns and corners.
Source: Wikisource

Peter Vivian Daniel Stimpson v. Baltimore and Susquehanna Railroad Company…

The operative principle of our patent is the groove, by which the cars are kept in place, and it makes no difference whether you run them upon the flanch or upon the tread. Now the defendant claims to have constructed a railway by the laying of two pieces of rail with an interval between them, which answers to our groove. And reliance is placed upon the using of one rail only for a groove, the other rail being flat. This, however, only gives the defendant a less beneficial use of our invention.
Source: Wikisource

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