Summary

William Strong Platt v. Union Pacific Railroad Company…

Congress is not to be presumed to have used words for no purpose. If it was intended that only lands which had been sold before three years had expired after the entire completion of the railroad should be exempted from pre-emption, the words 'or disposed of' were entirely superfluous. But the admitted rules of statutory construction declare that a legislature is presumed to have used no superfluous words. Courts are to accord a meaning, if possible, to every world in a statute.
Source: Wikisource

William Strong Platt v. Union Pacific Railroad Company…

We do not say that any mortgage, however small, or manifestly made to evade a bona fide execution of the purposes for which the grants were made, or made to defeat the policy of the government which encourages the sale of public lands to private settlers, and guards against the accumulation of large bodies in single hands, would be a disposal as understood by Congress.
Source: Wikisource

William Strong Platt v. Union Pacific Railroad Company…

Was the mortgage a sale or disposition of the lands as understood by Congress? That the company had power to mortgage the lands admits of no reasonable doubt. It may be conceded that a railroad company has not power either to sell or mortgage its franchise, or perhaps the road which it has been chartered to build, without express legislative authority, and this has in some cases been decided. The reason is that such a sale or mortgage tends to defeat the purposes the legislature had in view in the grant of the charter.
Source: Wikisource

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