US2442545A - Connector for vacuum tubes - Google Patents

Connector for vacuum tubes Download PDF

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Publication number
US2442545A
US2442545A US601640A US60164045A US2442545A US 2442545 A US2442545 A US 2442545A US 601640 A US601640 A US 601640A US 60164045 A US60164045 A US 60164045A US 2442545 A US2442545 A US 2442545A
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United States
Prior art keywords
connector
tube
wall
insulating material
metal
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Expired - Lifetime
Application number
US601640A
Inventor
Stanley J Koch
Herndon W Leighton
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Allen B du Mont Laboratories Inc
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Allen B du Mont Laboratories Inc
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Publication date
Application filed by Allen B du Mont Laboratories Inc filed Critical Allen B du Mont Laboratories Inc
Priority to US601640A priority Critical patent/US2442545A/en
Application granted granted Critical
Publication of US2442545A publication Critical patent/US2442545A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H01J5/40—End-disc seals, e.g. flat header
    • H01J5/42—End-disc seals, e.g. flat header using intermediate part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0034—Lamp bases

Definitions

  • This invention relates to connectors that are adapted for making electrical connections through insulating material. It is' particularly useful for coaxial cables.
  • Such a connector is provided with a passageway for an electrical conductor which is hermetically sealed thereto and electrically insulated therefrom.
  • the connectors are hermetically sealed in a wall of the vacuum space and may be connected to deflection plates of a cathode-ray tube, for example.
  • a metal tube is provided and hermetically sealed in a wall of insulating material and extends through said wall, preferably extending some distance on each side of said wall.
  • This metal tube is provided with insulating material on the inside thereof which closes the tube against passage of air and, at the same time, supports a metal conductor which is insulated from the metal tube and is hermetically sealed in the insulating material.
  • Flg. 1 is a vertical section showing the device installed in a wall of insulating material partly broken away;
  • Fig. 2 is an end view of Fig. 1 from the direction indicated by the line 2 2;
  • Fig. 3 is a vertical section of a modification.
  • reference character l indicates a wall of insulating material which may, for example, be the wall of a glass cathode-ray tube.
  • a metal tube 2 is hermetically sealed in the wall l by melting the insulating material, when of glass, asshown at 3 to provide an extended contacting surface between the insulating material I and the metal 2.
  • Discs I and 5 of insulating material are hermetically sealed in the tube 2 at or near opposite ends thereof.
  • the outer end of the tube 2 is formed into a flange 6 by rolling the edge, thus providing a connector for the outside lead of the coaxial cable terminal of the usual sort that can be snapped over this flange or
  • a metal connector 'I is hermetically sealed along the central lines of discs l and I so as to be securely held in position.
  • the connector l is provided with a ball end l for the snap connector ordinarily provided at the end of the center lead of the coaxial cable.
  • the metal tube 2 provides a shield for the connector 1 so that it may be used for making con- 2 nection from sources of ultra high frequencies to a conductor such as a deflection plate, for example, located inside of the vacuum tube.
  • a metal tube Il is sealed in the glass wall I Its inner end II is threaded and its outer end I2 is enlarged.
  • An intermediate conically shaped portion I3 is sealed in the wall I of the glass tube as described above.
  • An externally threaded metal sleeve Il is placed on the enlarged portion I2 and is provided with an annular extension or rim I5 that rests against the glass wall I. This sleeve fits tightly around the portion I2 and plastic adhesive material I6 is applied to the rim Il all the way around and may contact with some of the threads I4' and sleeve I l.
  • a coaxial metal pin I 1 for the central lead oi' a coaxial cable is hermetically sealed and maintained in place along the center line of tube I0 by means of glass or other rigid insulating material Il, Lead I9 is connected to the pin I'I for making connection with the center lead of a coaxial cable, the threads II being for making secure connection to the outer lead.
  • the enlarged end portion I2 of tube I0 increases the length of the leakage path through the air between the pin I'I and tube I0 at the portion I2.
  • a connector for connecting a coaxial cable to a device located in a vacuum tube having a glass wall comprising an integral metal tube hermetically sealed in said glass wall substantially at equal distances from the ends of said metal tube, a disc of insulating material hermetically sealed in said metal tube, said metal tube extending outside of said vacuum tube sufflciently to enable the outside lead of a coaxial cable to be attached thereto and having a portion of larger external diameter than that of the remaining portion of said metal tube for said lead to be attached thereto, a metal conductor for connection to the inner conductor of said cable -anchored in said disc of insulating material and extending outwardly beyond the outer end of said metal tube.
  • plastic adhesive material applied to said rim and. the wall of said tube.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Description

June l, 1948- s. J. KocH Erm.
CONNECTOR FOR VACUUM TUBES Filed June 26, 1945 F/G, Z
#M1/M INVENTZ/ BY zfmw Patented June 1, 1948 2.442.545 ooNNEc'roB Fon VACUUM '.rUnas Stanley J. Koch,
ton, Boonton,
ration of Delaware Clifton. and Herndon W. Leigh- N. J., assigner-a Mont Laboratories, Inc.,
to Allen B. Du
lassaie, N. J., a corpo- Application June 28, 1945, Serial No. 801.640 3 Claims. (Cl. 174-152) This invention relates to connectors that are adapted for making electrical connections through insulating material. It is' particularly useful for coaxial cables.
'I'hey are particularly useful for making connection from the outside to electrical devices that are located in a vacuum. Such a connector is provided with a passageway for an electrical conductor which is hermetically sealed thereto and electrically insulated therefrom. The connectors are hermetically sealed in a wall of the vacuum space and may be connected to deflection plates of a cathode-ray tube, for example.
In carrying out the invention a metal tube is provided and hermetically sealed in a wall of insulating material and extends through said wall, preferably extending some distance on each side of said wall. This metal tube is provided with insulating material on the inside thereof which closes the tube against passage of air and, at the same time, supports a metal conductor which is insulated from the metal tube and is hermetically sealed in the insulating material.
The invention may be understood from the description in connection with the accompanying drawing, in which- Flg. 1 is a vertical section showing the device installed in a wall of insulating material partly broken away;
Fig. 2 is an end view of Fig. 1 from the direction indicated by the line 2 2; and
Fig. 3 is a vertical section of a modification.
In the drawing, reference character l indicates a wall of insulating material which may, for example, be the wall of a glass cathode-ray tube.
A metal tube 2 is hermetically sealed in the wall l by melting the insulating material, when of glass, asshown at 3 to provide an extended contacting surface between the insulating material I and the metal 2. Discs I and 5 of insulating material are hermetically sealed in the tube 2 at or near opposite ends thereof. The outer end of the tube 2 is formed into a flange 6 by rolling the edge, thus providing a connector for the outside lead of the coaxial cable terminal of the usual sort that can be snapped over this flange or A metal connector 'I is hermetically sealed along the central lines of discs l and I so as to be securely held in position. The connector l is provided with a ball end l for the snap connector ordinarily provided at the end of the center lead of the coaxial cable.
The metal tube 2 provides a shield for the connector 1 so that it may be used for making con- 2 nection from sources of ultra high frequencies to a conductor such as a deflection plate, for example, located inside of the vacuum tube.
In the embodiment shown in Fig. 3 a metal tube Il is sealed in the glass wall I Its inner end II is threaded and its outer end I2 is enlarged. An intermediate conically shaped portion I3 is sealed in the wall I of the glass tube as described above.
An externally threaded metal sleeve Il is placed on the enlarged portion I2 and is provided with an annular extension or rim I5 that rests against the glass wall I. This sleeve fits tightly around the portion I2 and plastic adhesive material I6 is applied to the rim Il all the way around and may contact with some of the threads I4' and sleeve I l.
A coaxial metal pin I 1 for the central lead oi' a coaxial cable is hermetically sealed and maintained in place along the center line of tube I0 by means of glass or other rigid insulating material Il, Lead I9 is connected to the pin I'I for making connection with the center lead of a coaxial cable, the threads II being for making secure connection to the outer lead.
The enlarged end portion I2 of tube I0 increases the length of the leakage path through the air between the pin I'I and tube I0 at the portion I2.
What is claimed is:
1. A connector for connecting a coaxial cable to a device located in a vacuum tube having a glass wall, said connector comprising an integral metal tube hermetically sealed in said glass wall substantially at equal distances from the ends of said metal tube, a disc of insulating material hermetically sealed in said metal tube, said metal tube extending outside of said vacuum tube sufflciently to enable the outside lead of a coaxial cable to be attached thereto and having a portion of larger external diameter than that of the remaining portion of said metal tube for said lead to be attached thereto, a metal conductor for connection to the inner conductor of said cable -anchored in said disc of insulating material and extending outwardly beyond the outer end of said metal tube.
2. The connector of claim l in which the outer end of said outwardly extending metal tube is formed into a rim to provide connection to the outer lead of a coaxial cable.
3. The connector of claim 1 in which the outer end of said outwardly extending metal tube is provided with -an outwardly threaded metal sleeve having a rim resting against said glass wall, and
plastic adhesive material applied to said rim and. the wall of said tube.
STANLEY J. KOCH. HERNDON W. LEIGHTON.
REFERENCES CITED The following references are of record in the le of this patent:
Number Number Name Date Morrison Aug. 9, 1932 Maartens et a1 Oct. 6, 1936 Handrek Nov. 23, 1937 Bahls Feb, 14, 1939 Waldschmidt Feb. 13, 1940 Scharfnagel Apr. 16, 1940 Stupakoff et 9,1. May 4, 1943 McLaughlin June 29, 1943 Reppert Oct. 26, 1943 Bruno Nov. 23, 1943 Mittermaier May 14, 1946 Stupakoir June 25, 1946 Rigrod et al. Sept. 24, 1946
US601640A 1945-06-26 1945-06-26 Connector for vacuum tubes Expired - Lifetime US2442545A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531278A (en) * 1947-09-11 1950-11-21 Du Mont Allen B Lab Inc Shielded ultra high frequency cathode-ray tube
US2551611A (en) * 1945-04-23 1951-05-08 Int Standard Electric Corp Glass to metal seal in a coaxial cable
US2647940A (en) * 1948-08-31 1953-08-04 Gen Electric Metal enclosed bus with adjustable bus clamping means
US3226474A (en) * 1963-01-28 1965-12-28 Robertshaw Controls Co Capacitance probe assembly
US3533047A (en) * 1969-04-11 1970-10-06 Atomic Energy Commission High voltage coaxial connector

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310054A (en) * 1919-07-15 Protectivei device for electrical apparatus
US1658651A (en) * 1926-12-29 1928-02-07 Gen Electric Electric furnace
US1775530A (en) * 1928-01-20 1930-09-09 Condit Electrical Mfg Corp High-tension bushing having insulated supports
US1870959A (en) * 1925-04-13 1932-08-09 Westinghouse X Ray Co Inc X-ray apparatus
US2056861A (en) * 1932-03-12 1936-10-06 Philips Nv Electric discharge tube or incandescent lamp
US2100187A (en) * 1933-12-27 1937-11-23 Porzellanfabrik Kahla Entrance insulation for electrical conductors
US2147418A (en) * 1936-10-21 1939-02-14 Westinghouse Electric & Mfg Co Method of assembling lead-in conductor sealed through metallic casing
US2190302A (en) * 1938-03-19 1940-02-13 Fides Gmbh Glass-metal seal
US2197511A (en) * 1938-02-21 1940-04-16 Lorenz C Ag Vacuum tube device
US2318435A (en) * 1940-08-02 1943-05-04 Stupakoff Lab Inc Glass-to-metal seal and eyelet for constructing the same
US2323148A (en) * 1942-01-16 1943-06-29 Rca Corp Electrical contact assembly for use in electron discharge devices
US2332529A (en) * 1940-10-01 1943-10-26 Hugh E Reppert Coaxial transmission line
US2335041A (en) * 1942-08-12 1943-11-23 Bruno Patents Inc Right-angle electric connector
US2400364A (en) * 1943-01-22 1946-05-14 Gen Electric Spark plug construction
US2402927A (en) * 1942-06-06 1946-06-25 Stupakoff Ceramic & Mfg Co Insulating seal
US2408271A (en) * 1942-08-12 1946-09-24 Westinghouse Electric Corp Coaxial terminal assembly

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310054A (en) * 1919-07-15 Protectivei device for electrical apparatus
US1870959A (en) * 1925-04-13 1932-08-09 Westinghouse X Ray Co Inc X-ray apparatus
US1658651A (en) * 1926-12-29 1928-02-07 Gen Electric Electric furnace
US1775530A (en) * 1928-01-20 1930-09-09 Condit Electrical Mfg Corp High-tension bushing having insulated supports
US2056861A (en) * 1932-03-12 1936-10-06 Philips Nv Electric discharge tube or incandescent lamp
US2100187A (en) * 1933-12-27 1937-11-23 Porzellanfabrik Kahla Entrance insulation for electrical conductors
US2147418A (en) * 1936-10-21 1939-02-14 Westinghouse Electric & Mfg Co Method of assembling lead-in conductor sealed through metallic casing
US2197511A (en) * 1938-02-21 1940-04-16 Lorenz C Ag Vacuum tube device
US2190302A (en) * 1938-03-19 1940-02-13 Fides Gmbh Glass-metal seal
US2318435A (en) * 1940-08-02 1943-05-04 Stupakoff Lab Inc Glass-to-metal seal and eyelet for constructing the same
US2332529A (en) * 1940-10-01 1943-10-26 Hugh E Reppert Coaxial transmission line
US2323148A (en) * 1942-01-16 1943-06-29 Rca Corp Electrical contact assembly for use in electron discharge devices
US2402927A (en) * 1942-06-06 1946-06-25 Stupakoff Ceramic & Mfg Co Insulating seal
US2335041A (en) * 1942-08-12 1943-11-23 Bruno Patents Inc Right-angle electric connector
US2408271A (en) * 1942-08-12 1946-09-24 Westinghouse Electric Corp Coaxial terminal assembly
US2400364A (en) * 1943-01-22 1946-05-14 Gen Electric Spark plug construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551611A (en) * 1945-04-23 1951-05-08 Int Standard Electric Corp Glass to metal seal in a coaxial cable
US2531278A (en) * 1947-09-11 1950-11-21 Du Mont Allen B Lab Inc Shielded ultra high frequency cathode-ray tube
US2647940A (en) * 1948-08-31 1953-08-04 Gen Electric Metal enclosed bus with adjustable bus clamping means
US3226474A (en) * 1963-01-28 1965-12-28 Robertshaw Controls Co Capacitance probe assembly
US3533047A (en) * 1969-04-11 1970-10-06 Atomic Energy Commission High voltage coaxial connector

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