US2474223A - Electron tube - Google Patents

Electron tube Download PDF

Info

Publication number
US2474223A
US2474223A US643787A US64378746A US2474223A US 2474223 A US2474223 A US 2474223A US 643787 A US643787 A US 643787A US 64378746 A US64378746 A US 64378746A US 2474223 A US2474223 A US 2474223A
Authority
US
United States
Prior art keywords
target elements
envelope
target
electron
row
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 - Lifetime
Application number
US643787A
Other languages
English (en)
Inventor
Chevigny Paul Georges
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.)
STC PLC
Federal Telephone and Radio Corp
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE477654D priority Critical patent/BE477654A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US643787A priority patent/US2474223A/en
Priority to FR941063D priority patent/FR941063A/fr
Priority to GB2280/47A priority patent/GB644583A/en
Priority to CH260978D priority patent/CH260978A/de
Priority to ES0181002A priority patent/ES181002A1/es
Application granted granted Critical
Publication of US2474223A publication Critical patent/US2474223A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting

Definitions

  • This invention relates to electron beam-producing apparatus, particularly of the type .suitable for use as -electronic distributors, and to the method of manufacturing same.
  • the distribution is accomplished by providing in said distributor, means Ifor rotating an electron beam, as in .a cathode ray tube, and mounting in the circular path -of the beam, a yplurality of target yelements which are connected to Idifferent channels. Normally the beam -is cut off as by applying a suitable cut-off voltage 4to the control element 4ofthe distributor. As the beam-rotating means operatesto set up varying fields which would .rotate the beam, signa-ls arrive and are impressed upon the -control element to raise its potential above cut Ioff and cause the beam to :dash on.
  • An object of the xpresent inventionI is the -provision of improved electronic beam-producing apparatus of the typefhereinabove described.
  • Another object is the provision in such ap.- .paratus .of a ,very large number of .target elements.
  • Another object is the provision ⁇ of such an .apparatus .in .which the .target .elements are .sep- .arated from .each other -by shields .to minimize interrerence .or cross-.ta'lk between the various channels.
  • Fig. 2 is a cplanriew ofthearrangementofthe .target elements duringonestep Iin the process .of manufacturing .theiapparatusfolig c1; i
  • Fig. 3 is .a plan viewof .oneefrthe shie1ds. .inter posed between .the .targetelements in fthe ap'- .paratus of Fig. 1; I
  • Fig. 4 is adiagrammatic representation -of Va modified form .of .apparatus fembodyingf-lmy invention.
  • Fig. 5 is asimilar lView ofianothermiodication.
  • the target elements may be arranged in the form of a plurality of rows or tiers I4 longitudinally spaced from each other along the tube envelope, with a plurality of annular metallic shields I5 interleaved between successive tiers.
  • Each of the tiers consists of a plurality of metallic target elements It which elements may be in the form of short wires or rods which extend radially and are circumferentially spaced from each other and sealed in the glass wall of the envelope 2.
  • the construction of this portion of the cathode ray tube may be best understood from a description of the method of making it.
  • a wire l'l in the form of a circle having a diameter greater than the diameter of the cathode ray tube envelope at which the target elements are arranged has welded thereto, at spaced intervals, wire elements I8 which are somewhat longer than the target elements I6 but which are subsequently cut down as will be described hereinafter to leave portions which become the target elements It.
  • the short Wires I8 are radially arranged and circumferentially spaced along circular wire I1. A large number of Wires may be so arranged as for example, a hundred.
  • the assembly I9 thus produced permits handling of the Wires I8 as a single unit.
  • assemblies I9 are provided as there are to be tiers of target elements in cathode ray tube I. In the embodiment illustrated, there are ten tiers. A similar number of shields I5 are also provided.
  • the shields I5 consist of a't disks, as illustrated in Fig. 3, each having a large central opening.
  • the disk shields I5 and the assemblies I9 are alternately stacked one above the other with annular glass rings in between.
  • a high frequency coil or other heating means is employed to heat the glass as for example, preferably by inducing a high irequency current in the disk shields l5, which serves to fuse the glass between the disk shields as well as around the assemblies I9.
  • the disk shields I5 and the longitudinal wires I8 are preferably made of an alloy having the proper coefficient of expansion so that when subjected to heat, the seal between these and the glass will not be broken.
  • the strength of the magnetic field produced by the toroidal coil II] may be initially sufficient to bend the beam 9 so that it is directed toward the rst row of target elements nearest end 22 of the stack.
  • the beam is then rotated for one complete revolution by means of the deflecting plates 6 actuated by the two-phase generator 8.
  • the saw-tooth generator operates to increase the energy supplied to coil I0 and causes the beam to impinge on the second row of target elements.
  • the beam is then rotated for one complete revolution on the second row, whereupon another step increase in energy is applied to the toroidal coil ID which shifts the beam to the third roW of target elements from end 2'2.
  • the use of the magnetic Icoil I0 is dispensed with by making the target elements 25 of gradually increasing length from end 23 progressively toward end 22 of the stack.
  • the disk shields 26 are likewise of progressively increasing length, this being accomplished in the embodiment illustrated by welding to the inner ends of the disk 26 additional disks in which the central opening is of progressively decreasing diameter, from end 23 toward end 22 of the stack.
  • the apparatus of Fig. 4 also includes the electron gun 3 with control grid 4 and deflecting plates t.
  • the grid 4 is controlled by the signal coming in over line 5 and the deecting plates 6 are supplied with two-phase voltages from the two-phase generator 8 to produce a rotation of the beam.
  • the stepped saw-tooth generator Il is also employed but it is arranged to feed the two-phase generator with periodically stepped voltages so that the output of the twophase generator is periodically increased, thereby producing an increased deflection of the beam 9 in its circular path so as to shift the beam from row to row of the target elements.
  • the electromagnetic field coil I0 is also dispensed with and the deecting plate 6 and the electron gun 3 may be controlled as illustrated in Fig. 4.
  • the shields 26, together with their added disks 2l, are similar to those in Fig. 4 and the gradually increasing length of the target elements measured radially from the center of the tube increase progressively as do the lengths of the target elements 25 in Fig. 4.
  • All of the ends 3E) dene a curve, all points of which are equi-distant from the center of the deflecting plates E so that the beam travels an equal distance to any of the rows of the target elements.
  • the beam 9 rotates in the embodiment of Fig. 5, as it does in the other embodiments, and as, in the embodiment of Fig. 4, the radius or diameter of the circle made by the end of the beam is varied to move the :beam from one row of target elements' to the next.
  • Figs. 1-'5 may be used 4for various other purposes.
  • such apparatus may be used as a pulse generator by having the beam .continuously on and connecting all the target elements together to a common line. As thebeam 9 sweeps from target element to target element, pulses will be produced in said line and a large number of pulses will be thus produced at 'each complete travel of the beam from element to yelement and from row .to row.
  • Various other .uses will occur to those versed in the art from thefhereinabove description and from the description of the aforementioned application of E. M. Deloraine.
  • Electron beam-producing apparatus comprising means for producing an electron beam, a plurality of rows of target elements arranged in the path of said beam, each row consisting of a plurality of target elements spaced in a plane transverse to the plane along which the rows are spaced, and beam-deecting means for deflecting the beam to impinge upon the target elements.
  • Electron beam-producing apparatus according to claim 1 further including shield means in the form of disks interposed between successive rows of target elements.
  • Electron beam-producing apparatus comprising means for producing an electron beam, a plurality of rows of target elements adapted to be impinged upon by said beam, each row consisting of a plurality of target elements arranged in the form of a circle, and means for deecting the beam to impinge upon the target elements of each of said rows.
  • Electron beam-producing apparatus comprising an envelope, an electron gun positioned toward one end of the envelope for producingr an electron beam, a plurality of rows of target elements supported from the Wall of the envelope at longitudinally-spaced intervals thereon and approaching the other end thereof, each of said rows of target elements consisting of a plurality of target elements arranged in the form of a circle, means for producing a circular sweep of the electron beam, and for varying the angle of deflection of the beam from the path it would take if undeilected so as to determine the row of target elements upon which the beam' impinges.
  • Electron beam-producing apparatus further including a plurality of disks having central openings therein and serving as shields, sealed into the envelope between the rows of target elements.
  • Electron beam-producing apparatus wherein said target elements are in the form of short wires sealed through the envelope and'lextending radially. ofthe. longi-I- tudinal axis of the envelope, saidYwires"beingfcil: cumf-'erentially spaced.
  • Electron beam-producing apparatus accord# ing to claim 1w-herein said target elements-are in the form of short wires sealed throughthe wall of the envelope and extending radially A of the central longitudinal .axis thereof, said target-ele ments being circumferentially spaced, durther including shielding means interposed between the rows of target elements, said shielding l'means consisting of flat disks sealed through-the envelope wall and having .central openings therein.
  • Electron beam-producing apparatusl according to claim' 4 wherein said last-mentionedmeans includes an electromagnetic toroidal coil -arranged outside the envelope between the electron gun and the target elements, and means for :sup-
  • An electron distributor comprising acathode ray tube including an envelope, means for producing an electron beam within said envelope, a plurality of annuli arranged transversely with respect to the beam path, a plurality of target members arranged along the path of said beam and each forming part of a respective one of said annuli, beam deecting means associated with said beam producing means forproducing a circular sweep of the electron beam, and means including a stepped saw-tooth generator for varying the deection of the beam from the axis about which it sweeps to cause it to impinge upon the various target members.
  • An electron distributor according to claim 11 wherein said last-mentioned means includes an electromagnetic toroidal coil arranged outside the envelope between the electron gun and the target members, said generator being coupled to said coil for periodically varying the energy supplied to said coil in small abrupt steps.
  • An electronic distributor including a cathode ray tube having an envelope, anv electron gun positioned toward one end of the envelope for producing a narrow, electron beam, a plurality of rows of target elements supported from the wall of the envelope at longitudinally-spaced intervals thereon and approaching the other end thereof, each of said rows of target elements consisting of a plurality of target elements arranged in the form of a circle, the beam being so narrow that it is adapted to impinge substantially entirely on one of said target elements at a time, means for producing a circular sweep of the electron beam, and means for varying the angle of deiiection of the beam from the path it would take if undeflected so as to determine the row of target elements upon which the beam impinges.
  • said means for varying the angle of deection of the beam includes a toroidal coil arranged adjacent the path of the beam to set up a toroidal electromagnetic field thereabout, and a stepped saw-tooth generator supplying energy to said coil.
  • said means for producing a circular sweep of the electron beam includes two pair f spaced deflecting plates arranged at right angles to each other and between which the beam passes, and a two-phase generator coupled to said deflection plates to produce a circular sweep of the beam, and wherein said means for varying the angle of deflection of the beam includes a stepped saw-tooth generator controlling the magnitude of the output of said two-phase generator.

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Electrodes Of Semiconductors (AREA)
  • Physical Vapour Deposition (AREA)
  • Electron Beam Exposure (AREA)
US643787A 1946-01-26 1946-01-26 Electron tube Expired - Lifetime US2474223A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE477654D BE477654A (US07714131-20100511-C00024.png) 1946-01-26
US643787A US2474223A (en) 1946-01-26 1946-01-26 Electron tube
FR941063D FR941063A (fr) 1946-01-26 1947-01-17 Tubes à faisceau électronique
GB2280/47A GB644583A (en) 1946-01-26 1947-01-24 Electron beam tube
CH260978D CH260978A (de) 1946-01-26 1947-01-25 Kathodenstrahlschalter.
ES0181002A ES181002A1 (es) 1946-01-26 1947-12-19 MEJORAS EN LOS DISPOSITIVOS ELECTRoNICOS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US643787A US2474223A (en) 1946-01-26 1946-01-26 Electron tube

Publications (1)

Publication Number Publication Date
US2474223A true US2474223A (en) 1949-06-28

Family

ID=24582236

Family Applications (1)

Application Number Title Priority Date Filing Date
US643787A Expired - Lifetime US2474223A (en) 1946-01-26 1946-01-26 Electron tube

Country Status (6)

Country Link
US (1) US2474223A (US07714131-20100511-C00024.png)
BE (1) BE477654A (US07714131-20100511-C00024.png)
CH (1) CH260978A (US07714131-20100511-C00024.png)
ES (1) ES181002A1 (US07714131-20100511-C00024.png)
FR (1) FR941063A (US07714131-20100511-C00024.png)
GB (1) GB644583A (US07714131-20100511-C00024.png)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496633A (en) * 1947-12-24 1950-02-07 Bell Telephone Labor Inc Multitarget cathode-ray device
US2879435A (en) * 1956-08-24 1959-03-24 Du Mont Allen B Lab Inc Cathode-ray tube
US3242261A (en) * 1960-04-22 1966-03-22 Jack E Macgriff Electron emission control tube
US3456145A (en) * 1967-10-03 1969-07-15 Raytheon Co Cathode ray tube having multisegment target extending through envelope wall

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882850A (en) * 1929-08-05 1932-10-18 Bell Telephone Labor Inc Frequency producer
US1929067A (en) * 1930-11-22 1933-10-03 Wired Radio Inc Frequency multiplier
US1932637A (en) * 1928-06-18 1933-10-31 Associated Electric Lab Inc Vacuum tube
US2185693A (en) * 1938-02-25 1940-01-02 Bell Telephone Labor Inc Multiplex signaling system
US2265216A (en) * 1938-04-23 1941-12-09 Hartford Nat Bank & Trust Co Multiplex telephony system
US2274194A (en) * 1940-02-23 1942-02-24 Farnsworth Television & Radio Apparatus for and method of electron discharge control
US2297492A (en) * 1939-12-16 1942-09-29 Michaelis Gunter Electrical discharge device
US2325865A (en) * 1940-08-17 1943-08-03 Int Standard Electric Corp Electrode structure for velocity modulation tubes
US2361766A (en) * 1941-04-01 1944-10-31 Hadekel Ruben Automatic telegraph apparatus
US2376439A (en) * 1943-06-18 1945-05-22 Machlett Lab Inc Insulating structure
US2414939A (en) * 1943-11-01 1947-01-28 Gen Electric Beam deflection control circuit

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932637A (en) * 1928-06-18 1933-10-31 Associated Electric Lab Inc Vacuum tube
US1882850A (en) * 1929-08-05 1932-10-18 Bell Telephone Labor Inc Frequency producer
US1929067A (en) * 1930-11-22 1933-10-03 Wired Radio Inc Frequency multiplier
US2185693A (en) * 1938-02-25 1940-01-02 Bell Telephone Labor Inc Multiplex signaling system
US2265216A (en) * 1938-04-23 1941-12-09 Hartford Nat Bank & Trust Co Multiplex telephony system
US2297492A (en) * 1939-12-16 1942-09-29 Michaelis Gunter Electrical discharge device
US2274194A (en) * 1940-02-23 1942-02-24 Farnsworth Television & Radio Apparatus for and method of electron discharge control
US2325865A (en) * 1940-08-17 1943-08-03 Int Standard Electric Corp Electrode structure for velocity modulation tubes
US2361766A (en) * 1941-04-01 1944-10-31 Hadekel Ruben Automatic telegraph apparatus
US2376439A (en) * 1943-06-18 1945-05-22 Machlett Lab Inc Insulating structure
US2414939A (en) * 1943-11-01 1947-01-28 Gen Electric Beam deflection control circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496633A (en) * 1947-12-24 1950-02-07 Bell Telephone Labor Inc Multitarget cathode-ray device
US2879435A (en) * 1956-08-24 1959-03-24 Du Mont Allen B Lab Inc Cathode-ray tube
US3242261A (en) * 1960-04-22 1966-03-22 Jack E Macgriff Electron emission control tube
US3456145A (en) * 1967-10-03 1969-07-15 Raytheon Co Cathode ray tube having multisegment target extending through envelope wall

Also Published As

Publication number Publication date
FR941063A (fr) 1948-12-31
BE477654A (US07714131-20100511-C00024.png)
CH260978A (de) 1949-04-15
ES181002A1 (es) 1948-02-01
GB644583A (en) 1950-10-11

Similar Documents

Publication Publication Date Title
US2268194A (en) Electron discharge device
US2401432A (en) Radio position locator
US2859378A (en) Electrode system for cathode ray tubes
US2258643A (en) Distortion correction for cathode ray tubes
US2474223A (en) Electron tube
US2452157A (en) Electron discharge apparatus
US2470875A (en) Storage tube
US2227087A (en) Cathode ray tube
US3921025A (en) Dual-beam CRT with vertical trace bowing correction means
US2548405A (en) Electron tube
US2413276A (en) Cathode-ray apparatus
US4152685A (en) Deflection coil for a cathode ray tube
US2513947A (en) Multichannel signaling system
US2299047A (en) Electronic discharge device
US2501637A (en) Electron signal storage tube
US2726348A (en) Multiple beam gun
US2575393A (en) Electron beam tube filter
US2454773A (en) Pulse multiplex transmitter employing a cathode-ray tube time modulator
US2567359A (en) Electron discharge apparatus
US2576040A (en) Cathode-ray device
US2617077A (en) Electrostatic deflection system for cathode-ray tubes
US2717976A (en) Electrical signal storage
US2719248A (en) Electron discharge device
US2645741A (en) Electronic scanning apparatus
US2742590A (en) Two-dimensional scanner of the focussed rotary radial beam type