GB688491A - Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes - Google Patents

Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes

Info

Publication number
GB688491A
GB688491A GB1551550A GB1551550A GB688491A GB 688491 A GB688491 A GB 688491A GB 1551550 A GB1551550 A GB 1551550A GB 1551550 A GB1551550 A GB 1551550A GB 688491 A GB688491 A GB 688491A
Authority
GB
United Kingdom
Prior art keywords
cap
bulb
neck
groove
hexagonal
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
GB1551550A
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.)
JAMES WILLIAM WIGAN
General Electric Co PLC
Original Assignee
JAMES WILLIAM WIGAN
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 JAMES WILLIAM WIGAN, General Electric Co PLC filed Critical JAMES WILLIAM WIGAN
Priority to GB1551550A priority Critical patent/GB688491A/en
Publication of GB688491A publication Critical patent/GB688491A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/58—Means for fastening the separate part to the vessel, e.g. by cement
    • H01J5/60—Means for fastening the separate part to the vessel, e.g. by cement for fastening by mechanical means

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

688,491. Securing electric lamp caps. GENERAL ELECTRIC CO., Ltd., and WIGAN, J. W. June 8, 1951 [June 21, 1950], No. 15515/50. Class 39(ii) In order to secure a cap 1 to the bulb or envelope 2 of an electric incandescent lamp or similar device without the use of cement the cap is formed with a substantially plane-sided, e.g. hexagonal, metal skirt portion 5 which is a close fit over a c o rrespondingly plane-sided part of the neck 8 of the bulb, and across each edge 6 between adjacent plane sides of the skirt a slot 7 is cut at right-angles to the axis of the cap in a position that registers with a groove 9 in the corresponding edge on the bulb neck, so that. the part of the cap adjacent to the slot 7 and towards the open end of the cap can be turned inwardly into the groove 9. A single peripheral groove may be provided around the bulb neck instead of a single groove at each edge of the hexagonal portion. Each hexagonal side portion of the cap may be provided with a resilient tongue 12 formed by slitting the material, the end of each tongue being inwardly to bear upon the adjacent part of the neck of a bulb when the cap is mounted thereon. Specification 507,752 is referred to.
GB1551550A 1950-06-21 1950-06-21 Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes Expired GB688491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1551550A GB688491A (en) 1950-06-21 1950-06-21 Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1551550A GB688491A (en) 1950-06-21 1950-06-21 Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes

Publications (1)

Publication Number Publication Date
GB688491A true GB688491A (en) 1953-03-11

Family

ID=10060486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1551550A Expired GB688491A (en) 1950-06-21 1950-06-21 Improvements in or relating to electric devices, especially lamps, having capped vitreous envelopes

Country Status (1)

Country Link
GB (1) GB688491A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746907A (en) * 1971-09-08 1973-07-17 Westinghouse Electric Corp End cap configuration for ceramic discharge lamp
GB2132014A (en) * 1982-12-07 1984-06-27 Philips Nv Electric lamp
EP0186827A2 (en) * 1984-12-14 1986-07-09 General Electric Company Plastics skirt for rigidly interconnecting metallic base and glass envelope of a lamp
CN101866815A (en) * 2009-02-27 2010-10-20 通用电气公司 Lamp and manufacture method thereof with shell

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746907A (en) * 1971-09-08 1973-07-17 Westinghouse Electric Corp End cap configuration for ceramic discharge lamp
GB2132014A (en) * 1982-12-07 1984-06-27 Philips Nv Electric lamp
EP0186827A2 (en) * 1984-12-14 1986-07-09 General Electric Company Plastics skirt for rigidly interconnecting metallic base and glass envelope of a lamp
EP0186827A3 (en) * 1984-12-14 1988-11-17 General Electric Company Plastics skirt for rigidly interconnecting metallic base and glass envelope of a lamp
CN101866815A (en) * 2009-02-27 2010-10-20 通用电气公司 Lamp and manufacture method thereof with shell

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