US1719877A - Method of treating copper leading-in wires - Google Patents

Method of treating copper leading-in wires Download PDF

Info

Publication number: US1719877A
Authority: US; United States
Prior art keywords: wires; copper; stem; glass; treating copper
Prior art date: 1927-07-01
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

US202968A

Other languages

English (en)

Inventor

Groat Charles T De

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.)

General Electric Co

Original Assignee

General Electric Co

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.)

1927-07-01

Filing date

1927-07-01

Publication date

1929-07-09

1927-07-01 Application filed by General Electric Co filed Critical General Electric Co

1927-07-01 Priority to US202968A priority Critical patent/US1719877A/en

1927-10-18 Priority to DEP56281D priority patent/DE470230C/de

1928-06-15 Priority to FR35582D priority patent/FR35582E/fr

1929-07-09 Application granted granted Critical

1929-07-09 Publication of US1719877A publication Critical patent/US1719877A/en

1946-07-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title description 20
229910052802 copper Inorganic materials 0.000 title description 19
239000010949 copper Substances 0.000 title description 19
238000000034 method Methods 0.000 title description 9
239000011521 glass Substances 0.000 description 15
239000004020 conductor Substances 0.000 description 9
238000000137 annealing Methods 0.000 description 6
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
229910052721 tungsten Inorganic materials 0.000 description 4
239000010937 tungsten Substances 0.000 description 4
230000008021 deposition Effects 0.000 description 2
235000007319 Avena orientalis Nutrition 0.000 description 1
244000075850 Avena orientalis Species 0.000 description 1
238000010276 construction Methods 0.000 description 1
230000002939 deleterious effect Effects 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/32—Sealing leading-in conductors
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
- H01J19/44—Insulation between electrodes or supports within the vacuum space

Definitions

the present invention relates to leadingin wires employed in electric lamps and electric discharge tubes, and more artlcularly to a method of treatin during t e construction of such devices, t e usual stranded copper leading-in wires which supply current to the incandescent filament.
a seal assembly including a glass stem portion provided at one end with a press seal through which heavy tungsten wires pass. These wires are usually secured within the stem portion to stranded copper conductors it and the upper portion of the glass stem is sealed or joined to the body portion of the tube. It is customary to anneal the glass stems to remove strains from the glass and when the so-called hard glass, which is a at borosilicate, is employed the annealing temperature is approximately 600 C. At such a temperature the stranded copper w1res often become so brittle, due to oxidation, that they break in two when bent. Co per is also deposited on the inner walls 0 the glass stem, this deposit leading frequently to a subsequent puncture of the tube.
a stem portion of an electron discharge device the stem portion being made of hard glass and havin the usual press seal 2 at one end thereo through which tungsten wires 3 and 4 extend.
a pair of. copper conductors 5 and 6, made up of a series'of wires of small diameter, are secured in any suitable manner to the tungsten wires and are adapted to supply current to a filamentary electrode, not shown, when connected to a source of energy.
the up er end of stem 1 is provided with a flan e portion 7 whereby the stem may he joins or secured to a suitable glass receptacle.

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Resistance Heating (AREA)

US202968A 1927-07-01 1927-07-01 Method of treating copper leading-in wires Expired - Lifetime US1719877A (en)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
US202968A US1719877A (en)	1927-07-01	1927-07-01	Method of treating copper leading-in wires
DEP56281D DE470230C (de)	1927-07-01	1927-10-18	Verfahren zum Tempern von Einschmelzfuessen fuer elektrische Gluehlampen und Entladungsroehren
FR35582D FR35582E (fr)	1927-07-01	1928-06-15	Perfectionnements aux tubes à décharge électronique, particulièrement à la construction et au montage de leurs électrodes

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US202968A US1719877A (en)	1927-07-01	1927-07-01	Method of treating copper leading-in wires

Publications (1)

Publication Number	Publication Date
US1719877A true US1719877A (en)	1929-07-09

Family

ID=22751937

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US202968A Expired - Lifetime US1719877A (en)	1927-07-01	1927-07-01	Method of treating copper leading-in wires

Country Status (3)

Country	Link
US (1)	US1719877A (fr)
DE (1)	DE470230C (fr)
FR (1)	FR35582E (fr)

1927
- 1927-07-01 US US202968A patent/US1719877A/en not_active Expired - Lifetime
- 1927-10-18 DE DEP56281D patent/DE470230C/de not_active Expired
1928
- 1928-06-15 FR FR35582D patent/FR35582E/fr not_active Expired

Also Published As

Publication number	Publication date
DE470230C (de)	1929-01-10
FR35582E (fr)	1930-03-26

Publication	Publication Date	Title
US2075910A (en)	1937-04-06	Thermionic cathode
US1694997A (en)	1928-12-11	Base for incandescent lamps or similar articles
US2291965A (en)	1942-08-04	Electrical discharge device
US1719877A (en)	1929-07-09	Method of treating copper leading-in wires
US3582704A (en)	1971-06-01	Manufacture of foil seals
GB477462A (en)	1937-12-30	Improvements in or relating to metallic electric conductors sealed through quartz
US3113893A (en)	1963-12-10	Incandescent filament
US1712663A (en)	1929-05-14	Method of shaping filaments
US1280825A (en)	1918-10-08	Process of treating drawn metal.
US1889598A (en)	1932-11-29	Incandescent electric lamp
US2162546A (en)	1939-06-13	Gaseous electric discharge device
US2254853A (en)	1941-09-02	Glass-to-copper seal
US1969658A (en)	1934-08-07	Thermionic tube
US1816424A (en)	1931-07-28	Glass seal
US1771957A (en)	1930-07-29	Electric lamp
US1712403A (en)	1929-05-07	Means for producing high vacuums
US1773630A (en)	1930-08-19	Power tube
US1872336A (en)	1932-08-16	Vacuum tube device
US1787699A (en)	1931-01-06	X-ray tube
US1931987A (en)	1933-10-24	Electron discharge tube
US1673789A (en)	1928-06-12	Electron-discharge device
US1857203A (en)	1932-05-10	Leading-in conductor
US1869544A (en)	1932-08-02	Method of cleaning up gases
US1924266A (en)	1933-08-29	Process for interrupting connections in vacuum valves
US1854376A (en)	1932-04-19	Method of treating tubes