US2448808A - Contact terminal for vacuum tubes - Google Patents

Contact terminal for vacuum tubes Download PDF

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Publication number
US2448808A
US2448808A US591465A US59146545A US2448808A US 2448808 A US2448808 A US 2448808A US 591465 A US591465 A US 591465A US 59146545 A US59146545 A US 59146545A US 2448808 A US2448808 A US 2448808A
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US
United States
Prior art keywords
contact
tube
wall
glass
neck
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
US591465A
Inventor
Stanley J Koch
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Allen B du Mont Laboratories Inc
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Allen B du Mont Laboratories Inc
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 BE612341D priority Critical patent/BE612341A/xx
Priority to NL68416D priority patent/NL68416C/xx
Priority to FR926001D priority patent/FR926001A/fr
Application filed by Allen B du Mont Laboratories Inc filed Critical Allen B du Mont Laboratories Inc
Priority to US591465A priority patent/US2448808A/en
Priority to GB13082/46A priority patent/GB612341A/en
Priority to US702766A priority patent/US2444808A/en
Priority to US26776A priority patent/US2511164A/en
Application granted granted Critical
Publication of US2448808A publication Critical patent/US2448808A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/06—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by mechanical gearing only
    • B60P1/14—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by mechanical gearing only with cables, chains, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/477—Fusion bond, e.g., weld, etc.

Definitions

  • This invention relates to a terminal or contact for making connection from a source of electrical potential to an electrode extending inside of an electron tube or cathode-ray tube and for the process of securing said contact to the wall of said tube.
  • connections of this type have been made by fusing a portion of the glass wall of the tube and locating the terminal so that a lead could be connected thereto.
  • the glass tube was in danger of being broken or cracked by the contact being struck or too much pressure being applied thereto.
  • the contact surface between the contact member and the wall of the tube was not much more than was provided by the thickness of the wall of the tube, the danger of leaking and breaking the vacuum in the tube was increased.
  • Fig. 1 is a plan View of the contact
  • Fig. 2 is a side view partly in section showing the contact and a pin therefor, which pin has a short cylinder of glass thereon;
  • Fig. 3 is a sectional view showing a portion of the wall of a tube with the contact in place.
  • reference character I indicates the rounded portion or head of a contact to which connection is to be made from a source of potential. This connection may be made, for example, by a snap terminal which is held on head I in the known way.
  • Head l extends into a neck portion 2 which is flared outwardly into a disc portion 3 which is turned upwardly as indicated at 4 and ends in a downwardly extending ring portion, the end of which is shown by the reference character 5.
  • a metal rod 6 is installed in the neck portion 2 of the contact I and fits tightly therein so as to maintain both a mechanical and electrical connection between the contact I and rod 6.
  • a glass bead 'l is placed on the rod 6 with one end thereof in contact with the portion 3 of the terminal.
  • a hole or opening slightly larger than the bead l is provided in a wall 8 of the tube where the contact is to be installed.
  • the head 1 and rod 6 are placed in this hole with the disc portion 3 of the contact I in contact with the outer surface of the glass wall.
  • the glass is then fused by applying heat to it and the corresponding portion of the bead 'l to fuse the same together as shown in Fig. 3 and also to fuse the bead 'l more securely on the rod 6, and also fuse the glass so that it flows lightly around the portion 4 of the contact as indicated at 9, thus more securely anchoring the contact in the glass wall and also decreasing the danger of a leakage path forming.
  • a metal contact terminal anchored in the wall of a glass tube which comprises an integral hollow metal head and neck, the lower end of said neck merging into a metal disc the edge of which terminates in an annular inturned flange surrounding said neck, a metal rod tightly fitting in said neck and passing through said wall, and a glass tube integral with said wall fused on said rod on the opposite side of said wall from said head to hold said tube securely on said rod.
  • a metal contact terminal anchored in the wall of a glass tube which comprises an integral hollow metal head and neck, the lower end of said neck merging into a metal disc the edge of which terminates in an annular inturned flange surrounding said neck, a metal rod tightly fitting in said neck and passing through said wall, a glass tube integral with said wall fused on said rod on the opposite side of said wall from said head to hold said tube securely on said rod, and said inturned flange being also fused to said glass wall and spaced from said neck.

Description

p 7, 1948. 5. KOCH 2,448,808
CONTACT TERMINAL FOR VACUUM TUBES Filed May 2, 1945 M INVENTOR ATTORNEY Patented Sept. 7, 1948 UNITED STATES PATENT OFFICE CONTACT TERMINAL FOR VACUUM TUBES Stanley J. Koch, Clifton, N. J., assignor to Allen B. Du Mont Laboratories, Inc., Passaic, N. J., a corporation of Delaware Application May 2, 1945, Serial No. 591,465
2 Claims. 1
This invention relates to a terminal or contact for making connection from a source of electrical potential to an electrode extending inside of an electron tube or cathode-ray tube and for the process of securing said contact to the wall of said tube.
Heretofore, connections of this type have been made by fusing a portion of the glass wall of the tube and locating the terminal so that a lead could be connected thereto. With such connections the glass tube was in danger of being broken or cracked by the contact being struck or too much pressure being applied thereto. Besides, since the contact surface between the contact member and the wall of the tube was not much more than was provided by the thickness of the wall of the tube, the danger of leaking and breaking the vacuum in the tube was increased.
By the present invention prior difliculties have been overcome and an electrical conatact element is securely and firmly mounted on the tube in such a Way that the danger of the tube being broken by force applied to the contact or a blow striking and breaking it is minimized, and at the same time the danger of leakage of air through the part where the contact is installed in the wall of the tube is materially decreased or entirely overcome.
The invention may be understood in connection with the accompanying drawing; in which:
Fig. 1 is a plan View of the contact;
Fig. 2 is a side view partly in section showing the contact and a pin therefor, which pin has a short cylinder of glass thereon; and
Fig. 3 is a sectional view showing a portion of the wall of a tube with the contact in place.
In the drawing, reference character I indicates the rounded portion or head of a contact to which connection is to be made from a source of potential. This connection may be made, for example, by a snap terminal which is held on head I in the known way.
Head l extends into a neck portion 2 which is flared outwardly into a disc portion 3 which is turned upwardly as indicated at 4 and ends in a downwardly extending ring portion, the end of which is shown by the reference character 5.
A metal rod 6 is installed in the neck portion 2 of the contact I and fits tightly therein so as to maintain both a mechanical and electrical connection between the contact I and rod 6.
A glass bead 'l is placed on the rod 6 with one end thereof in contact with the portion 3 of the terminal.
A hole or opening slightly larger than the bead l is provided in a wall 8 of the tube where the contact is to be installed. The head 1 and rod 6 are placed in this hole with the disc portion 3 of the contact I in contact with the outer surface of the glass wall. The glass is then fused by applying heat to it and the corresponding portion of the bead 'l to fuse the same together as shown in Fig. 3 and also to fuse the bead 'l more securely on the rod 6, and also fuse the glass so that it flows lightly around the portion 4 of the contact as indicated at 9, thus more securely anchoring the contact in the glass wall and also decreasing the danger of a leakage path forming.
What is claimed is:
1. A metal contact terminal anchored in the wall of a glass tube, which comprises an integral hollow metal head and neck, the lower end of said neck merging into a metal disc the edge of which terminates in an annular inturned flange surrounding said neck, a metal rod tightly fitting in said neck and passing through said wall, and a glass tube integral with said wall fused on said rod on the opposite side of said wall from said head to hold said tube securely on said rod.
2. A metal contact terminal anchored in the wall of a glass tube, which comprises an integral hollow metal head and neck, the lower end of said neck merging into a metal disc the edge of which terminates in an annular inturned flange surrounding said neck, a metal rod tightly fitting in said neck and passing through said wall, a glass tube integral with said wall fused on said rod on the opposite side of said wall from said head to hold said tube securely on said rod, and said inturned flange being also fused to said glass wall and spaced from said neck.
STANLEY J. KOCH.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,738,957 Metcalf Dec. 10, 1929 1,909,797 Anderson, Jr May 16, 1933 1,922,535 Erickson Aug. 15, 1933 2,192,892 Brandt Mar. 12, 1940 2,194,418 Bowie Mar. 19, 1940 2,202,500 Lopp May 28, 1940 2,269,156 Kling Jan. 6, 1942 2,366,459 Rosa Jan. 2, 1945 2,398,535 Koch Apr. 16, 1946
US591465A 1945-05-02 1945-05-02 Contact terminal for vacuum tubes Expired - Lifetime US2448808A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE612341D BE612341A (en) 1945-05-02
NL68416D NL68416C (en) 1945-05-02
FR926001D FR926001A (en) 1945-05-02
US591465A US2448808A (en) 1945-05-02 1945-05-02 Contact terminal for vacuum tubes
GB13082/46A GB612341A (en) 1945-05-02 1946-04-30 Improvements in contact terminals for vacuum tubes and the process for sealing the terminals or the tubes
US702766A US2444808A (en) 1945-05-02 1946-10-11 Dump vehicle
US26776A US2511164A (en) 1945-05-02 1948-05-13 Process of sealing contact terminals to electron tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US591465A US2448808A (en) 1945-05-02 1945-05-02 Contact terminal for vacuum tubes

Publications (1)

Publication Number Publication Date
US2448808A true US2448808A (en) 1948-09-07

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US591465A Expired - Lifetime US2448808A (en) 1945-05-02 1945-05-02 Contact terminal for vacuum tubes

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784386A (en) * 1953-05-26 1957-03-05 United Carr Fastener Corp Electrical assembly
US3731031A (en) * 1971-03-03 1973-05-01 Burgess Micro Switch Co Ltd Operating members for snap-action switches

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738957A (en) * 1923-04-16 1929-12-10 Magnavox Co Photo-electric tube
US1909797A (en) * 1932-03-08 1933-05-16 Hanovia Chemical & Mfg Co Method of forming electrical lead-ins for fused quartz devices
US1922535A (en) * 1930-06-16 1933-08-15 Claude Neon Electrical Product Method of producing quartz seals
US2192892A (en) * 1937-04-06 1940-03-12 Friedrich H A Brandt Glass-to-metal seal
US2194418A (en) * 1936-09-04 1940-03-19 Hygrade Sylvania Corp Method of making a cathode-ray tube envelope
US2202500A (en) * 1938-04-07 1940-05-28 Lorenz C Ag Vacuum tube device
US2269156A (en) * 1940-04-26 1942-01-06 Gen Electric Lead-in seal
US2366459A (en) * 1943-10-26 1945-01-02 Anthony G Rosa Electrode
US2398535A (en) * 1943-10-08 1946-04-16 Du Mont Allen B Lab Inc Contact terminal for electron tubes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738957A (en) * 1923-04-16 1929-12-10 Magnavox Co Photo-electric tube
US1922535A (en) * 1930-06-16 1933-08-15 Claude Neon Electrical Product Method of producing quartz seals
US1909797A (en) * 1932-03-08 1933-05-16 Hanovia Chemical & Mfg Co Method of forming electrical lead-ins for fused quartz devices
US2194418A (en) * 1936-09-04 1940-03-19 Hygrade Sylvania Corp Method of making a cathode-ray tube envelope
US2192892A (en) * 1937-04-06 1940-03-12 Friedrich H A Brandt Glass-to-metal seal
US2202500A (en) * 1938-04-07 1940-05-28 Lorenz C Ag Vacuum tube device
US2269156A (en) * 1940-04-26 1942-01-06 Gen Electric Lead-in seal
US2398535A (en) * 1943-10-08 1946-04-16 Du Mont Allen B Lab Inc Contact terminal for electron tubes
US2366459A (en) * 1943-10-26 1945-01-02 Anthony G Rosa Electrode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784386A (en) * 1953-05-26 1957-03-05 United Carr Fastener Corp Electrical assembly
US3731031A (en) * 1971-03-03 1973-05-01 Burgess Micro Switch Co Ltd Operating members for snap-action switches

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