GB288694A - Improvements in light signals - Google Patents

Improvements in light signals

Info

Publication number
GB288694A
GB288694A GB720/27A GB72027A GB288694A GB 288694 A GB288694 A GB 288694A GB 720/27 A GB720/27 A GB 720/27A GB 72027 A GB72027 A GB 72027A GB 288694 A GB288694 A GB 288694A
Authority
GB
United Kingdom
Prior art keywords
filaments
bulbs
class
light signals
railway
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
GB720/27A
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 Power Railway Signal Co Ltd
ERNEST ENOCH PIERCE
SAMUEL LEAR GIENN
Original Assignee
British Power Railway Signal Co Ltd
ERNEST ENOCH PIERCE
SAMUEL LEAR GIENN
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 Power Railway Signal Co Ltd, ERNEST ENOCH PIERCE, SAMUEL LEAR GIENN filed Critical British Power Railway Signal Co Ltd
Priority to GB720/27A priority Critical patent/GB288694A/en
Publication of GB288694A publication Critical patent/GB288694A/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
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/002—Emergency driving lights in the event of failure of the principal lighting circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/003—Searchlights, i.e. outdoor lighting device producing powerful beam of parallel rays, e.g. for military or attraction purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

288,694. British Fewer Railway Signal Co., Ltd., Glenn, S. L., and Pierce, E. E. Jan. 10, 1927. Filaments. - In a light projector, an electric lamp bulb may have two or more filaments concentrated at one focus, or parallel to each other, or, as shown in the Figure, two filaments 32, 33 may be arranged at an angle to each other. The filaments may have the same or different life ratings, and one or more may be of the Hashing type. When two or more bulbs are to be employed with their filaments close to each other, one or more of the bulbs may be of elliptical, flat, cylindrical, or other non-spherical form. Specification 276,040, [Class 75 (iv), Lamps &c., Kinds &c. of], is referred to, and the Provisional Specification also refers to Specifications 209,868 and 252,217, [both in Class 105, Railway signals &c.].
GB720/27A 1927-01-10 1927-01-10 Improvements in light signals Expired GB288694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB720/27A GB288694A (en) 1927-01-10 1927-01-10 Improvements in light signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB720/27A GB288694A (en) 1927-01-10 1927-01-10 Improvements in light signals

Publications (1)

Publication Number Publication Date
GB288694A true GB288694A (en) 1928-04-10

Family

ID=9709342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB720/27A Expired GB288694A (en) 1927-01-10 1927-01-10 Improvements in light signals

Country Status (1)

Country Link
GB (1) GB288694A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137449A (en) * 1959-10-29 1964-06-16 Marbelite Company Inc Signal
WO2014016227A1 (en) * 2012-07-23 2014-01-30 Osram Gmbh Lens, lens array and illuminating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137449A (en) * 1959-10-29 1964-06-16 Marbelite Company Inc Signal
WO2014016227A1 (en) * 2012-07-23 2014-01-30 Osram Gmbh Lens, lens array and illuminating device
CN103574501A (en) * 2012-07-23 2014-02-12 欧司朗股份有限公司 Lens, lens array and lighting device
CN103574501B (en) * 2012-07-23 2018-05-29 欧司朗股份有限公司 Lens, lens array and lighting device

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