GB925542A - Improvements in or relating to cathode glow indicator tubes - Google Patents
Improvements in or relating to cathode glow indicator tubesInfo
- Publication number
- GB925542A GB925542A GB17573/59A GB1757359A GB925542A GB 925542 A GB925542 A GB 925542A GB 17573/59 A GB17573/59 A GB 17573/59A GB 1757359 A GB1757359 A GB 1757359A GB 925542 A GB925542 A GB 925542A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathodes
- anodes
- shield
- cathode
- sets
- Prior art date
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
- H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0069—Tubes for displaying characters
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
925,542. Discharge lamps. BURROUGHS CORPORATION. May 22, 1959 [May 22, 1958], No. 17573/59. Class 39 (1). [Also in Group XXXVIII] An indicator tube has an envelope 12, filled with a gas such as neon at about 40-120 mms. pressure, and a plurality of glow cathodes 22, in the form of numbers, letters, &c. arranged in a group or groups of two sets with one of a pair of anodes 36, 40 respectively associated with each set, each of the anodes being interposed between its associated set of cathodes and the other anode whereby each of the anodes shields its associated set of cathodes from the other anode. A shield 38 can be mounted between the anodes 36 and 40 to further shield each of said sets of cathodes from the other anode. All the electrodes and the shield 38 are mounted in stacked relationship. Each cathode in one of the sets, e.g. representing the odd integers, is connected electrically to a respective cathode in the other of the sets, e.g. representing the even integers. The interconnections can be made by connecting each cathode to a pin 16 and connecting the appropriate pins together inside or outside the envelope, or leads from each two cathodes to be connected together can be secured directly to the same pin inside the envelope, or the socket to be used with the tube can be wired to provide the desired cathode pairs. A screen 42 is provided to prevent sublimation of metal from the cathodes on to the plane or curved viewing window 20. The cathodes 22 can be made from stainless steel, aluminium, nickelchromium alloys, or molybdenum by etching, stamping or formed wire and are displaced laterally with respect to each other. Each anode 36, 40 is formed of wire mesh and all the electrodes are provided with apertured tabs for mounting between insulating spacers 34 on elongated pins. The shield 38 can be at a neutral potential relative to the cathodes and anodes. A cup-shaped member 24 as described in Specification 879,033, of imperforate or mesh conductive or non-conductive material rests on a mica disc 30, and surrounds the electrodes. The cup 24 can be at a neutral potential or can be connected to the shield 38. The screen 42 can be connected to the shield 38. A binarytype decade-counter in which the tube is used is shown in Fig. 3, and includes four flip-flop circuits 50, 52, 54, 56, input pulses being fed into the first circuit 50, the output of which is connected both to the counting chain and to the anodes 36 and 40. The output lines of the circuits 52, 54 and 56 are fed into a resistor matrix 58 and the output of the matrix is applied to a particular cathode pair. In the construction shown in Fig. 4, the tube 10<SP>1</SP> comprises one group 60 of two sets of electrodes and a second group 62 which includes cathodes, anodes 36<SP>1</SP> and 401 and a shield 38<SP>1</SP>. The tube 10<SP>1</SP> can be operated so that one cathode in each group glows at the same time to achieve a two-numeral read-out.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US737036A US2906906A (en) | 1958-05-22 | 1958-05-22 | Indicator tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB925542A true GB925542A (en) | 1963-05-08 |
Family
ID=24962340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17573/59A Expired GB925542A (en) | 1958-05-22 | 1959-05-22 | Improvements in or relating to cathode glow indicator tubes |
Country Status (2)
Country | Link |
---|---|
US (1) | US2906906A (en) |
GB (1) | GB925542A (en) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183404A (en) * | 1965-05-11 | Control circuits for multicathode indicating devices | ||
US2991388A (en) * | 1958-07-02 | 1961-07-04 | Ericsson Telephone Ltd | Display devices employing glow discharge tubes |
US2996635A (en) * | 1958-12-11 | 1961-08-15 | Int Standard Electric Corp | Cold cathode character display tubes |
US3080501A (en) * | 1959-04-10 | 1963-03-05 | Rochar Electronione | Pulse counting and display device |
US3037141A (en) * | 1959-05-08 | 1962-05-29 | Ass Elect Ind | Electric discharge device |
US3064160A (en) * | 1959-07-02 | 1962-11-13 | Burroughs Corp | Counter circuit and optional count indicator |
US3075119A (en) * | 1959-08-14 | 1963-01-22 | Philips Corp | Glow-discharge indicator tube |
US3042826A (en) * | 1959-11-02 | 1962-07-03 | Burroughs Corp | Indicator tube |
US3005922A (en) * | 1959-11-13 | 1961-10-24 | Nat Union Electric Corp | Luminous discharge indicia tube |
US3067354A (en) * | 1960-03-08 | 1962-12-04 | Burroughs Corp | Indicator tube |
US3188509A (en) * | 1960-07-15 | 1965-06-08 | Philips Corp | Glow-discharge digit lamp |
US3219801A (en) * | 1961-08-25 | 1965-11-23 | Tektronix Inc | Pulse counter |
US3250938A (en) * | 1962-01-31 | 1966-05-10 | Philips Corp | Biquinary glow-discharge digit indicator tube |
DE1184417B (en) * | 1962-01-31 | 1964-12-31 | Philips Nv | Glow discharge indicator tube showing numerals |
US3119950A (en) * | 1962-03-22 | 1964-01-28 | Burroughs Corp | Counter circuit with diode matrix feeding signals to transistor switches which control cold cathode indicator |
NL280449A (en) * | 1962-07-03 | |||
GB1045274A (en) * | 1962-07-26 | 1966-10-12 | Standard Telephones Cables Ltd | Character display tubes |
US3244923A (en) * | 1962-09-14 | 1966-04-05 | Friden Inc | Character representing glow discharge tube and system for selective excitation of the character representing electrodes thereof |
US3242370A (en) * | 1962-10-03 | 1966-03-22 | Friden Inc | Cathode glow indicator tube |
US3188511A (en) * | 1964-04-10 | 1965-06-08 | Burroughs Corp | Cold cathode indicator tube |
US3509715A (en) * | 1966-02-01 | 1970-05-05 | Gen Time Corp | Electronic clocks |
GB1235479A (en) * | 1967-09-15 | 1971-06-16 | Bell Punch Co Ltd | Improvements in or relating to tubes to display alpha-numeric characters and read-out circuits for use therewith |
US3500121A (en) * | 1968-02-15 | 1970-03-10 | Gen Time Corp | Electronic counting or timekeeping system using glow discharge tube without permanent anode |
US3666981A (en) * | 1969-12-18 | 1972-05-30 | Ibm | Gas cell type memory panel with grid network for electrostatic isolation |
US3703657A (en) * | 1971-02-11 | 1972-11-21 | Burroughs Corp | Variable pattern gaseous display panel having segmented cathode electrodes |
US3903448A (en) * | 1971-10-12 | 1975-09-02 | Burroughs Corp | Multiple character flat panel display device |
US3801862A (en) * | 1972-11-06 | 1974-04-02 | Ncr | Plasma cell voltage control circuit |
US3778675A (en) * | 1973-01-16 | 1973-12-11 | Burroughs Corp | Circuit for operating multiple position display tubes |
US3790850A (en) * | 1973-02-01 | 1974-02-05 | Burroughs Corp | Apparatus for operating multiple position display tubes |
US3952223A (en) * | 1973-08-24 | 1976-04-20 | Burroughs Corporation | Multiple character flat panel display device |
USD942534S1 (en) * | 2019-10-19 | 2022-02-01 | Mahdi Al-Husseini | Calculator with electronic tube display and keypad |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2142106A (en) * | 1934-05-09 | 1939-01-03 | Hans P Boswau | Signaling system and glow lamps therefor |
US2769939A (en) * | 1950-06-12 | 1956-11-06 | Northrop Aircraft Inc | Read-out tube circuit |
US2606309A (en) * | 1950-06-15 | 1952-08-05 | Bell Telephone Labor Inc | Glow discharge device |
US2790110A (en) * | 1952-05-09 | 1957-04-23 | Charles J Applegate | Gaseous discharge device |
US2717334A (en) * | 1953-04-21 | 1955-09-06 | Ncr Co | Electronic counters |
US2756366A (en) * | 1954-04-01 | 1956-07-24 | Nat Union Electric Corp | Luminous discharge tube and system |
-
1958
- 1958-05-22 US US737036A patent/US2906906A/en not_active Expired - Lifetime
-
1959
- 1959-05-22 GB GB17573/59A patent/GB925542A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2906906A (en) | 1959-09-29 |
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