GB568698A - Improvements in the capping of thermionic valves, electric lamps and like devices - Google Patents

Improvements in the capping of thermionic valves, electric lamps and like devices

Info

Publication number
GB568698A
GB568698A GB842043A GB842043A GB568698A GB 568698 A GB568698 A GB 568698A GB 842043 A GB842043 A GB 842043A GB 842043 A GB842043 A GB 842043A GB 568698 A GB568698 A GB 568698A
Authority
GB
United Kingdom
Prior art keywords
cap
capping
devices
thermionic valves
thermionic
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
GB842043A
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.)
HERBERT SIDNEY SMITH
MO Valve Co Ltd
Original Assignee
HERBERT SIDNEY SMITH
MO Valve 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 HERBERT SIDNEY SMITH, MO Valve Co Ltd filed Critical HERBERT SIDNEY SMITH
Priority to GB842043A priority Critical patent/GB568698A/en
Publication of GB568698A publication Critical patent/GB568698A/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

Abstract

568,698. Caps for thermionic valves. M-O VALVE CO., Ltd., and SMITH, H. S. May 26, 1943, No. 8420. Drawings to Specification. [Class 39 (i)] [Also in Group XI] In the manufacture of a thermionic valve or electric lamp of the kind having an insulating cap secured to a vitreous envelope by a thermosetting cement, setting is effected, at least in part, by heating by electromagnetic induction a metal body carried on the inner surface of the cap. The metal body may be a non- magnetic ring moulded in the cap and heated by eddy currents, or a split ring or a few turns of a helix of steel wire or strip sprung into the cap and heated by magnetic hysteresis.
GB842043A 1943-05-26 1943-05-26 Improvements in the capping of thermionic valves, electric lamps and like devices Expired GB568698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB842043A GB568698A (en) 1943-05-26 1943-05-26 Improvements in the capping of thermionic valves, electric lamps and like devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB842043A GB568698A (en) 1943-05-26 1943-05-26 Improvements in the capping of thermionic valves, electric lamps and like devices

Publications (1)

Publication Number Publication Date
GB568698A true GB568698A (en) 1945-04-17

Family

ID=9852173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB842043A Expired GB568698A (en) 1943-05-26 1943-05-26 Improvements in the capping of thermionic valves, electric lamps and like devices

Country Status (1)

Country Link
GB (1) GB568698A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6306306B1 (en) 1996-03-21 2001-10-23 Arzneimittelwerk Dresden Chromatographic process for obtaining highly purified cyclosporin A and related cyclosporins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6306306B1 (en) 1996-03-21 2001-10-23 Arzneimittelwerk Dresden Chromatographic process for obtaining highly purified cyclosporin A and related cyclosporins

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