O. H. Jewell Filter Co. v. Jackson
Court of Appeals for the Eighth Circuit
Appeal from the Circuit Court of the United States for the Eastern District of Missouri.
1Opinion of the Court
SANBORN, Circuit Judge.
This is an appeal from a decree of dismissal of a bill for the infringement of letters patent No. 509,126, to Omar H. Jewell and Ira H. Jewell, for improvements in the apparatus for agitating the sand or filtering materials in a gravity filter. Prior *342to the invention of the patentee's filtering materials had been placed in a large cylindrical tank in such a filter. A vertical rotary shaft, supplied with machinery and power by means of which it could be revolved in either direction, had been extended down into the tank. To the lower end of this shaft, or to a driving…
2Cases cited17 opinions
- Seymour v. OsborneSupreme Court of the United States · 1871
- Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
- Westinghouse v. Boyden Power Brake Co.Supreme Court of the United States · 1898
- White v. DunbarSupreme Court of the United States · 1886
- National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
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