GB579034A - Improvements in and relating to signalling apparatus - Google Patents

Improvements in and relating to signalling apparatus

Info

Publication number
GB579034A
GB579034A GB1640938A GB1640938A GB579034A GB 579034 A GB579034 A GB 579034A GB 1640938 A GB1640938 A GB 1640938A GB 1640938 A GB1640938 A GB 1640938A GB 579034 A GB579034 A GB 579034A
Authority
GB
United Kingdom
Prior art keywords
shutter
lamp
signalling
signalling apparatus
relating
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
GB1640938A
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.)
HARRY KEBBEL BOURNE
British Thomson Houston Co Ltd
Original Assignee
HARRY KEBBEL BOURNE
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 HARRY KEBBEL BOURNE, British Thomson Houston Co Ltd filed Critical HARRY KEBBEL BOURNE
Priority to GB1640938A priority Critical patent/GB579034A/en
Publication of GB579034A publication Critical patent/GB579034A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

579,034. Signalling by visible signals. BRITISH THOMSON-HOUSTON CO., Ltd., DAVIES, L. J., and BOURNE, H. K. June 1, 1938, No. 16409. [Class 118 (ii)] [Also in Group XL] A signalling apparatus comprises an electric discharge lamp 1 and a shutter 6 controlled by electro magnetic means, the solenoid 2 for operating the shutter being connected in series with the lamp 1 and with an impedance 7 which can be shortcircuited by a tapping key or contactor 9. The operation of the key simultaneously opens the shutter and increases the emission of light from the lamp. The lamp and the shutter mechanism are contained within an outer envelope 10 which may be evacuated or filled with an inert gas. Reference has been directed by the Comptroller to Specification 508,241.
GB1640938A 1938-06-01 1938-06-01 Improvements in and relating to signalling apparatus Expired GB579034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1640938A GB579034A (en) 1938-06-01 1938-06-01 Improvements in and relating to signalling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1640938A GB579034A (en) 1938-06-01 1938-06-01 Improvements in and relating to signalling apparatus

Publications (1)

Publication Number Publication Date
GB579034A true GB579034A (en) 1946-07-22

Family

ID=10076797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1640938A Expired GB579034A (en) 1938-06-01 1938-06-01 Improvements in and relating to signalling apparatus

Country Status (1)

Country Link
GB (1) GB579034A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608640A (en) * 1947-08-12 1952-08-26 Gen Electric Discharge lamp control system with an electromagnetic lock for the simmering shutter
US2617013A (en) * 1946-11-11 1952-11-04 Gen Electric Co Ltd Light-reflecting simmering shutter for high-pressure metal vapor lamps
US20190136703A1 (en) * 2017-11-09 2019-05-09 Kabushiki Kaisha Toshiba Guide vane and fluid machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617013A (en) * 1946-11-11 1952-11-04 Gen Electric Co Ltd Light-reflecting simmering shutter for high-pressure metal vapor lamps
US2608640A (en) * 1947-08-12 1952-08-26 Gen Electric Discharge lamp control system with an electromagnetic lock for the simmering shutter
US20190136703A1 (en) * 2017-11-09 2019-05-09 Kabushiki Kaisha Toshiba Guide vane and fluid machine
US11306602B2 (en) 2017-11-09 2022-04-19 Kabushiki Kaisha Toshiba Guide vane and fluid machine

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