GB265113A - Improvements in the manufacture of filaments for electric incandescent lamps - Google Patents

Improvements in the manufacture of filaments for electric incandescent lamps

Info

Publication number
GB265113A
GB265113A GB29284/26A GB2928426A GB265113A GB 265113 A GB265113 A GB 265113A GB 29284/26 A GB29284/26 A GB 29284/26A GB 2928426 A GB2928426 A GB 2928426A GB 265113 A GB265113 A GB 265113A
Authority
GB
United Kingdom
Prior art keywords
filament
filaments
manufacture
former
incandescent lamps
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
GB29284/26A
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 PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB265113A publication Critical patent/GB265113A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • H01K3/04—Machines therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Heating (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

265,113. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gluhlampen). July 10, 1926, [Convention date]. Filaments of compact type, for example a filament composed of a number of close parallel coils a adapted for projection lamps, are made by winding wire ribbon or spiral filament on to a former h, Figs. 4 and 5, which determines the final shape of the filament, clamping the former and the filament in a surrounding mould n, o, Fig. 7, and annealing the filament under these conditions to eliminate internal stresses and so prevent sagging while the filament is in use.
GB29284/26A 1926-07-10 1926-11-19 Improvements in the manufacture of filaments for electric incandescent lamps Expired GB265113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE265113X 1926-07-10

Publications (1)

Publication Number Publication Date
GB265113A true GB265113A (en) 1927-02-03

Family

ID=5992748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29284/26A Expired GB265113A (en) 1926-07-10 1926-11-19 Improvements in the manufacture of filaments for electric incandescent lamps

Country Status (4)

Country Link
US (1) US1726480A (en)
FR (1) FR634873A (en)
GB (1) GB265113A (en)
NL (1) NL21496C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449653A (en) * 1946-07-27 1948-09-21 Dorothy J Isaac Filament forming apparatus
US2759498A (en) * 1949-05-28 1956-08-21 Sylvania Electric Prod Apparatus for forming lamp filaments
US2655952A (en) * 1949-05-28 1953-10-20 Sylvania Electric Prod Method of forming lamp filaments
US2644102A (en) * 1950-08-10 1953-06-30 Gen Electric Incandescent lamp mount and manufacture thereof
US2691817A (en) * 1950-12-14 1954-10-19 Westinghouse Electric Corp Device for applying coiled filaments to setting mandrels
US2633552A (en) * 1951-06-04 1953-03-31 Westinghouse Electric Corp Lamp, filament therefor and method
US2693204A (en) * 1952-05-29 1954-11-02 Westinghouse Electric Corp Coil bending machine for projection lamp filaments
US3122176A (en) * 1958-10-27 1964-02-25 Philips Corp Method of manufacturing bodies consisting of helically wound wire
US3160181A (en) * 1961-03-27 1964-12-08 Sylvania Electric Prod Method of and apparatus for feeding, compressing, stretching and transferring filaments
US3233637A (en) * 1962-12-31 1966-02-08 Alvis R Knowles Heating element and method and apparatus for making the same

Also Published As

Publication number Publication date
FR634873A (en) 1928-03-01
NL21496C (en)
US1726480A (en) 1929-08-27

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