GB528603A - Improvements in and relating to the manufacture of electric lamps - Google Patents

Improvements in and relating to the manufacture of electric lamps

Info

Publication number
GB528603A
GB528603A GB1396239A GB1396239A GB528603A GB 528603 A GB528603 A GB 528603A GB 1396239 A GB1396239 A GB 1396239A GB 1396239 A GB1396239 A GB 1396239A GB 528603 A GB528603 A GB 528603A
Authority
GB
United Kingdom
Prior art keywords
clamp
stem
flared portion
pinch
recess
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
GB1396239A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1396239A priority Critical patent/GB528603A/en
Publication of GB528603A publication Critical patent/GB528603A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

528,603. Leading-in wires. BRITISH THOMSON-HOUSTON CO., Ltd., and SCOTT, W. J. May 10, 1939, No. 13962. [Class 39 (ii)] [Also in Group XL] Stems for incandescent or gaseous discharge lamps comprise a flared portion, and a short tubular portion in which the pinch for the leadin wires is formed so that when the pinch has been made little or no tubular part remains. Each stem is manufactured by holding it in a clamp 1, 2, having a recess 8 receiving the flared portion, the tubular portion being downwardly directed through an aperture 3 and heated by flames below the clamp. Thus the flared portion of the stem is protected by the clamp from the heat. The recess 8 may be rectangular in form with supporting ribs. The formation of the clamp as a pair of separable jaws facilitates removal of the stem.
GB1396239A 1939-05-10 1939-05-10 Improvements in and relating to the manufacture of electric lamps Expired GB528603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1396239A GB528603A (en) 1939-05-10 1939-05-10 Improvements in and relating to the manufacture of electric lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1396239A GB528603A (en) 1939-05-10 1939-05-10 Improvements in and relating to the manufacture of electric lamps

Publications (1)

Publication Number Publication Date
GB528603A true GB528603A (en) 1940-11-01

Family

ID=10032525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1396239A Expired GB528603A (en) 1939-05-10 1939-05-10 Improvements in and relating to the manufacture of electric lamps

Country Status (1)

Country Link
GB (1) GB528603A (en)

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