GB595601A - Improved method of making fine wire contacts for use in electrical apparatus - Google Patents

Improved method of making fine wire contacts for use in electrical apparatus

Info

Publication number
GB595601A
GB595601A GB13950/44A GB1395044A GB595601A GB 595601 A GB595601 A GB 595601A GB 13950/44 A GB13950/44 A GB 13950/44A GB 1395044 A GB1395044 A GB 1395044A GB 595601 A GB595601 A GB 595601A
Authority
GB
United Kingdom
Prior art keywords
wire
dish
inches
holder
contact
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
Application number
GB13950/44A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB595601A publication Critical patent/GB595601A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/40—Electrodes ; Multistep manufacturing processes therefor
    • H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
    • H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/40—Electrodes ; Multistep manufacturing processes therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/70—Bipolar devices
    • H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49169—Assembling electrical component directly to terminal or elongated conductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

595,601. Making electric contacts. WESTERN ELECTRIC CO., Inc. July 20, 1944, No. 13950. Convention date, March 16, 1943. [Class 83 (ii)] [Also in Groups XXXVI and XL] The end of a fine wire for use as an electrical contact member, e.g. in detectors or rectifiers for ultra high frequency radio &c., is given a desired form, e.g. by grinding, is electrolytically etched, and is then pressed against the member it is to remain in contact with, and preferably tapped, to flatten the point into a contact engaging area. A tungsten wire 0.005 inches in diameter, preferably gold plated, is given a conical end, 75-degrees apex angle by rotating it in contact with a high speed grinding wheel. The other end of the wire is then soldered to a holder 3 of brass or other conductor and the wire bent a number of times to give it resilience. A number of these holders 3 are mounted on a strip 4 and arranged with the ground points of the wires immersed in 25 per cent potassium hydroxide solution in a dish 5, Fig. 7. The dish is levelled by means of a tripod table 7 with adjusting screws 8, 9, 10 and the height of the solution 6 is regulated by altering the pressure in a flask 13, connected to the dish by a syphon, by means of a two-way valve 11, an air pump in the form of a rubber bulb 12, and an exhaust pipe 22. The dish 5 contains a cathode 15 and a potential difference of 0.80 volts, as registered by the meter 18 is applied for two seconds to etch the points to a spherical form, e.g. with a radius of 0.0003 inches. This etched form is then polished by applying 2 volts for 0.2 seconds twice. These times and voltages are obtained by use of the switch 16 and rheostat 14. The level of the electrolyte is then lowered, the strip 4 with its holders 3 is removed and the wires are washed and dried. A holder 3 is inserted in a plug 25, Fig. 8, which is screwed into a ceramic cylinder 23, the base of which is closed by a screw plug 24 carrying a wafer 27 of crystalline silicon. The holder is adjusted to exert enough force on the wire point to flatten it to a small finite area and is so secured by set screws 29. The device is then tapped so as to produce a flattened area of about 0.0003 inches in diameter. In modifications, the wire is ground or otherwise formed to a wedge, Fig. 11 or 13, instead of to a cone and then treated as described.
GB13950/44A 1943-03-16 1944-07-20 Improved method of making fine wire contacts for use in electrical apparatus Expired GB595601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US479320A US2430028A (en) 1943-03-16 1943-03-16 Translating device and method of making it

Publications (1)

Publication Number Publication Date
GB595601A true GB595601A (en) 1947-12-10

Family

ID=23903527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13950/44A Expired GB595601A (en) 1943-03-16 1944-07-20 Improved method of making fine wire contacts for use in electrical apparatus

Country Status (4)

Country Link
US (1) US2430028A (en)
BE (1) BE595601A (en)
FR (1) FR946853A (en)
GB (1) GB595601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732614A (en) * 1949-07-02 1956-01-31 shower
DE1040131B (en) * 1953-10-02 1958-10-02 Int Standard Electric Corp Method for forming electrical semiconductor devices with a needle electrode provided with foreign matter

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572801A (en) * 1943-06-23 1951-10-23 Sylvania Electric Prod Electrical rectifier
US2549550A (en) * 1948-08-19 1951-04-17 Bell Telephone Labor Inc Vibration-operated transistor
US2612567A (en) * 1949-10-04 1952-09-30 Stuetzer Otmar Michael Transconductor employing field controlled semiconductor
US2660696A (en) * 1950-05-10 1953-11-24 Hazeltine Research Inc Crystal contact device
US2693022A (en) * 1950-10-06 1954-11-02 Gen Electric Method of manufacturing whisker electrodes
US2697268A (en) * 1950-12-30 1954-12-21 Sylvania Electric Prod Diode fabricating apparatus
US2753497A (en) * 1951-08-03 1956-07-03 Westinghouse Brake & Signal Crystal contact rectifiers
US2863106A (en) * 1953-07-09 1958-12-02 Itt Crystal rectifier and manufacture thereof
US2825857A (en) * 1953-12-31 1958-03-04 Ibm Contact structure
US2940024A (en) * 1954-06-01 1960-06-07 Rca Corp Semi-conductor rectifiers
US3047933A (en) * 1958-01-17 1962-08-07 Columbia Broadcasting Syst Inc Crystal diode assembly machine and method therefor
US4224123A (en) * 1979-01-15 1980-09-23 The Upjohn Company Method and apparatus for electropolishing tablet compressing toolings
US5035780A (en) * 1988-03-25 1991-07-30 Agency Of Industrial Science And Technology Method of manufacturing a platinum tip
US5066370A (en) * 1990-09-07 1991-11-19 International Business Machines Corporation Apparatus, electrochemical process, and electrolyte for microfinishing stainless steel print bands
US5085746A (en) * 1990-09-10 1992-02-04 North Carolina State University Method of fabricating scanning tunneling microscope tips

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT62869B (en) * 1912-04-23 1914-01-10 Westinghouse Metallfaden Glueh Method for sharpening metal bodies or wires, in particular those for electric incandescent lamps, for the purpose of inserting them into the drawing holes.
US1614562A (en) * 1925-09-05 1927-01-18 Clemens A Laise Apparatus and method of wire drawing and alloy wires used for radiotubes and other purposes
DE456720C (en) * 1926-12-20 1929-04-13 Funke A G Geb Method of removing the burr on cutting edges of cutting tools
GB322118A (en) * 1928-06-05 1929-12-05 Sherard Osborn Cowper Coles An improved process and apparatus for the electrolytic removal of metal from metallic bodies
US1958338A (en) * 1931-07-18 1934-05-08 Mallory & Co Inc P R Electrical make-and-break contact

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732614A (en) * 1949-07-02 1956-01-31 shower
DE1040131B (en) * 1953-10-02 1958-10-02 Int Standard Electric Corp Method for forming electrical semiconductor devices with a needle electrode provided with foreign matter

Also Published As

Publication number Publication date
US2430028A (en) 1947-11-04
BE595601A (en)
FR946853A (en) 1949-06-16

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