Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB24633/28A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens and Halske AGfiledCriticalSiemens and Halske AG
Publication of GB296314ApublicationCriticalpatent/GB296314A/en
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/13—Solid thermionic cathodes
H01J1/15—Cathodes heated directly by an electric current
Landscapes
Discharge Lamps And Accessories Thereof
(AREA)
Cathode-Ray Tubes And Fluorescent Screens For Display
(AREA)
Abstract
296,314. Siemens & Halske Akt.-Ges. Aug. 27, 1927, [Convention date]. Vacuum tubes. - The leads 6, 7 for a single elongated hairpin filament cathode 3 are arranged opposite to one another in the envelope and perpendicular to the axis of the tube. The cathode is supported by rigid conductors 4, 5 connected through the fiexible leads 6, 7, with rods 9 which are fixed to glass projections 10 on the envelope 1 by metal parts 12. An anode 2 surrounds the cathode.