Rajah Auto Supply Co. v. Emil Grossman Co.
Court of Appeals for the Second Circuit
Appeal from the Circuit Court of the United States for the Southern District of New York. Suit in equity by the Rajah Auto Supply Company against the Emil Grossman Company. Decree for complainant, holding valid and infringed claims 3 and 6 of letters patent No. 825,856, granted to David 15. Mills for an improvement in spark-plugs, and defendant appeals.
1Opinion of the Court
C( )XE, Circuit Judge.
The patent in question relates to a combination in a spark-plug composed of the following elements:
1. A socket, having a screw-thread and a shoulder.
2. A shank of insulating material having thereon an enlargement adapted to rest on said shoulder and tapering upward from said enlargement.
3. A threaded hushing surrounding said tapered portion, screwing upon said socket and adapted to press against said tapered, portion, the lower edge of said hushing being sharpened and formed of soft metal and adapted to be upset when screwed down upon said tapered portion.
The invention…
2Cases cited3 opinions
- Mast, Foos & Co. v. Stover Manufacturing Co.Supreme Court of the United States · 1900
- National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
- Bradley v. EcclesCourt of Appeals for the Second Circuit · 1906
3Cited by2 opinions
- Rajah Auto Supply Co. v. Belvidere Screw & Machine Co.Court of Appeals for the Seventh Circuit · 1921
- Witzel v. BermanDistrict Court, S.D. New York · 1913