Westinghouse Rectigon bulb in original package. brass mogul base with glass insulator, C-2 tungsten filament with welded connectors, disc-shaped anode with single connector at top, tipless envelope. stamped on base collar: “5 Rectigon S-289416- WE&M Co. U.S.A.”, printed on package: “Westinghouse / Rectigon / Battery Charger / Bulb / 6 Amperes / Style 289416 / [Westinghouse logo] / Made in U.S.A.”
Rectifier for Freed-Eisemann set for alternating current power. Lowell & Dunmore patent case. Marked: (1) Plaintiffs Exhibit No. 28 (2) In Supreme Court of U.S. Oct. term, 1932 (3) Supreme Court of the U.S. Oct. Term, 1935. Plaintiffs Respondents Exhibit No. 28 (4) In the U.S. Pat. Office. Interference Nos. 15204-51702-53153-53154-53155. Lowell & Dunmore Ex. No. 36. (5) U.S. District Court. District of Delaware Nos. 663-664-665. Plaintiffs Exhibit "B-1" for Identification. Unit consists of a power transformer manufactured by the American Transformer Co. of Newark, N.J., a 201A rectifier tube (grid & plate tied), and associated filter choke and condenser. Case is of wooden construction. Power supply was designed by P.D. Lowell & F.W. Dunmore to furnish current to a Freed-Eisemann neutrodyne receiver, and was demonstrated to Joseph D. R. Freed in June, 1924. Owing to patent complications the Freed-Eisemann Co. was not immediately interested in production. Reference: "U.S. 4th Circuit court of Appeals Transcript Record", Vol. I, page 145; Vol II., page 255.
Used in Supreme Court case, 1935. Marked: BS31247; tags: (1) In the U.S. Pat. Office Interference Nos. 51204-21702-53153-53154-53155. Lowell & Dunmore Exhibit No. 46. (2) U.S. District Court District of Delaware Plaintiffs Exhibit No. 67. (3) Supreme Court of the U.S., Oct. Term 1935, Plaintiffs--Respondents Exhibit no. 20. Bureau of Standards. No.: R-597. Rectifier unit was employed as the power supply for the A.C. operated receiver (Cat. #321925). Rectifying tube is a UV201-A with grid and plate tied together to form a diode. Transformer contains five windings, one supplying 6 volts AC to the rectifier filament, one supplying 6 volts to receiving tube filaments, one supplying 300 volts for filtering and use as plate voltage, and one supplying four volts to the filament of a "Tungar" rectifier tube. The 110 volt input or primary winding was tapped to furnish plate voltage to the "Tungar" gas rectifier. This latter tube supplied DC current to the filed coil of a Magnavox speaker. In this case, the choke employed for filtering purposes was the twin filed coil of the Kolster Arc. (Cat. No. 321936) Reference: Bureau of Standards "Scientific Paper No. 450" (1922).
