GB963376A - Improvements in methods of manufacturing electrical contact-blades - Google Patents

Improvements in methods of manufacturing electrical contact-blades

Info

Publication number
GB963376A
GB963376A GB1348662A GB1348662A GB963376A GB 963376 A GB963376 A GB 963376A GB 1348662 A GB1348662 A GB 1348662A GB 1348662 A GB1348662 A GB 1348662A GB 963376 A GB963376 A GB 963376A
Authority
GB
United Kingdom
Prior art keywords
strip
plating
pict
blades
resistant
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
GB1348662A
Inventor
Robert Wilson Beattie
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB1348662A priority Critical patent/GB963376A/en
Publication of GB963376A publication Critical patent/GB963376A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1603—Process or apparatus coating on selected surface areas
    • C23C18/1605—Process or apparatus coating on selected surface areas by masking
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas
    • C25D5/022—Electroplating of selected surface areas using masking means
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/42—Coating with noble metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

<PICT:0963376/C6-C7/1> <PICT:0963376/C6-C7/2> <PICT:0963376/C6-C7/3> A method of making electrical contact blades 10 having limited regions, embracing the contact-making areas plated with precious metal comprises applying to a 0.020 inch strip, of preferably phosphor bronze, bands 19, 20 of plating-resistant varnish, e.g. by roller or spraying means, blanking the strip to form a succession of contacts 16 connected by tags 17 showing positioning perforations 18, immersing a length of the strip in a plating solution so that the right hand contact portion 11 only is immersed up to the mid-point of the resist strip 19 and plating by the electroless or electrolytic method the exposed areas thereof with, e.g., gold or platinum to a thickness of 0.0002-0.0003 inch. Subsequently the strip is cleaned and if necessary the plating resistant removed, prior to dipping the left hand tag portions 13 of the strip into a molten tinning bath and passing the strip through a press tool to blank and form the finished blade 10 therefrom. The plating-resistant bands may be applied to the strip after the initial blanking operation. The blades may be used in multi-point plugs and shelf jacks for telephone systems.
GB1348662A 1962-04-07 1962-04-07 Improvements in methods of manufacturing electrical contact-blades Expired GB963376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1348662A GB963376A (en) 1962-04-07 1962-04-07 Improvements in methods of manufacturing electrical contact-blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1348662A GB963376A (en) 1962-04-07 1962-04-07 Improvements in methods of manufacturing electrical contact-blades

Publications (1)

Publication Number Publication Date
GB963376A true GB963376A (en) 1964-07-08

Family

ID=10023826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1348662A Expired GB963376A (en) 1962-04-07 1962-04-07 Improvements in methods of manufacturing electrical contact-blades

Country Status (1)

Country Link
GB (1) GB963376A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537175A (en) * 1966-11-09 1970-11-03 Advalloy Inc Lead frame for semiconductor devices and method for making same
US3780247A (en) * 1972-05-18 1973-12-18 Bunker Ramo Contact element having noble wear area

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537175A (en) * 1966-11-09 1970-11-03 Advalloy Inc Lead frame for semiconductor devices and method for making same
US3780247A (en) * 1972-05-18 1973-12-18 Bunker Ramo Contact element having noble wear area

Similar Documents

Publication Publication Date Title
FR2097133B1 (en)
GB1421534A (en) Electrical brushes
EP0190465A3 (en) Process for electroplating amorphous alloys
GB963376A (en) Improvements in methods of manufacturing electrical contact-blades
GB724379A (en) A method for making a predetermined metallic pattern on an insulating base
JPH0119000B2 (en)
US2291592A (en) Electrical rectifier
BR9307532A (en) Sliding element and process for your production
GB1177831A (en) Methods and Apparatus for Providing Connections Between Printed Circuits
GB1300304A (en) Electroplated solder
GB1301546A (en)
EP0063925A1 (en) Electro-plating process and products therefrom
FR2119734A5 (en) Printed circuits - prodn by electrolytic engraving
ES450982A1 (en) Electrolytic production of perforated metal foil
GB806977A (en) Improvements in printed circuits
FR2286894A1 (en) Continuous (partial) electroplating of strip - using insulating, immersed guide roll and continuous masking strip
FR2321233A7 (en) Soldering system which prevents excess solder at contact - is used in solder bath dipping processes and involves use of tinned and etched aluminium pins
JPH02232394A (en) Anticorrosive treatment of plated material
DE2215364C3 (en) Process for gold-plating tungsten or molybdenum electrodes
ES379842A1 (en) Methods for removing a portion of an organic insulating coating from an insulated wire to permit making of electrical connection to the wire
JPS58197291A (en) Plating method with tin or tin alloy
GB813693A (en) Improvements in or relating to printed electric circuits
ES353799A1 (en) A procedure to treat a metal substrate. (Machine-translation by Google Translate, not legally binding)
GB938192A (en) Wire and rod plating process and product thereof
NL7118141A (en) Electrolytic deposn - of metal strips on a metal ribbon eg for stamped-out contacts