GB685776A - Improvements in or relating to rear-lamp tell-tale arrangements for vehicles - Google Patents

Improvements in or relating to rear-lamp tell-tale arrangements for vehicles

Info

Publication number
GB685776A
GB685776A GB549450A GB549450A GB685776A GB 685776 A GB685776 A GB 685776A GB 549450 A GB549450 A GB 549450A GB 549450 A GB549450 A GB 549450A GB 685776 A GB685776 A GB 685776A
Authority
GB
United Kingdom
Prior art keywords
lamp
rear lamp
resistance
lamps
march
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
GB549450A
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.)
JOHN ERNEST THOMPSON
Original Assignee
JOHN ERNEST THOMPSON
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 JOHN ERNEST THOMPSON filed Critical JOHN ERNEST THOMPSON
Priority to GB549450A priority Critical patent/GB685776A/en
Publication of GB685776A publication Critical patent/GB685776A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

685,776. Lamp failure alarms and warning- devices. THOMPSON, J. E. March 5, 1951 [March 3, 1950], No. 5494/50, Class 118 (ii). A device to indicate the con dition of a vehicle rear lamp 10 comprises a pilot lamp 15 which, in series with a resist ance 14, is connected in paralle with the rear lamp 10 and in series with a common resist ance 11. The components are chosen such that the volt drop across resistance 11 ensures that the pilot lamp does not light properly when the rear lamp is functioning, but if the rear lamp fails the volt drop across resistance 11 decreases so that lamp 15 shines brightly. In a modification a further pilot lamp 20 is connected across the resistance 11 so that it shines brightly when the rear lamp is functioning but dims when the portion of circuit containing the rear lamp 10 is broken. A box-like mounting for the two lamps is described having a detachable cover with two apertures containing red and green filters for the lamps 15 and 20 respectively. The resistances 11 and 14 are accommodated inside the box which has a bracket and ring clip for clamping to the vehicle steering column, Fig. 6 (not shown).
GB549450A 1950-03-03 1950-03-03 Improvements in or relating to rear-lamp tell-tale arrangements for vehicles Expired GB685776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB549450A GB685776A (en) 1950-03-03 1950-03-03 Improvements in or relating to rear-lamp tell-tale arrangements for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB549450A GB685776A (en) 1950-03-03 1950-03-03 Improvements in or relating to rear-lamp tell-tale arrangements for vehicles

Publications (1)

Publication Number Publication Date
GB685776A true GB685776A (en) 1953-01-14

Family

ID=9797255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB549450A Expired GB685776A (en) 1950-03-03 1950-03-03 Improvements in or relating to rear-lamp tell-tale arrangements for vehicles

Country Status (1)

Country Link
GB (1) GB685776A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188200A (en) * 1986-03-20 1987-09-23 Licentia Gmbh Indicating lamp failure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188200A (en) * 1986-03-20 1987-09-23 Licentia Gmbh Indicating lamp failure
US4808975A (en) * 1986-03-20 1989-02-28 Licentia Patent-Verwaltungs-Gmbh Arrangement for checking and indicating the malfunction of a lamp in monitoring and switching systems

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