US1655914A - Automobile headlight - Google Patents

Automobile headlight Download PDF

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Publication number
US1655914A
US1655914A US7794A US779425A US1655914A US 1655914 A US1655914 A US 1655914A US 7794 A US7794 A US 7794A US 779425 A US779425 A US 779425A US 1655914 A US1655914 A US 1655914A
Authority
US
United States
Prior art keywords
reflector
light
automobile headlight
parabola
filaments
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 - Lifetime
Application number
US7794A
Inventor
Clarence A Michel
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.)
GUIDE MOTOR LAMP Manufacturing Co
Original Assignee
GUIDE MOTOR LAMP Manufacturing Co
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 GUIDE MOTOR LAMP Manufacturing Co filed Critical GUIDE MOTOR LAMP Manufacturing Co
Priority to US7794A priority Critical patent/US1655914A/en
Application granted granted Critical
Publication of US1655914A publication Critical patent/US1655914A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M99/00—Subject matter not provided for in other groups of this subclass
    • B43M99/001—Desk sets
    • B43M99/002—Tubular fountain pen holders
    • 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
    • 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
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated

Definitions

  • a f3 Sheets-Sneek 3 lam gives a limited lateral distribution of the eam of light and the prismatic portion in addition to giving a limited amount of lateral distribution also causes a still further bending down of the rays of light which pass through the upper portion of the lens.
  • a light projector the combination with a reflector, of a lamp having two independently lighted filaments, one of said filaments being slightly below the axis of the reflector and the other one slightly above said axis, the upper half of the reflector being in the form of a parabola, the rear portion of the lower half of reflector being also a parabola, the forward -portion ofrthe lower half being carried below and outside the normal curvature of revolution whereby the rays of light from either filament will be directed downwardly, and transition surfaces arranged between the upper and lower halves of the reflector.
  • a light projector the combination with a reflector, of a lamp having two independently lighted filaments, one of said filaments being slightly below the axis of the refiector and the other one slightly above said axis, the upper half of the reflector being in the form of a parabola, the rear portion of the lower half of reflector being also a parabola, the forward portion of the lower half being carried below and outside the normal curvature of revolution whereby the rays of light from either filament will be directed downwardly, transition surfaces arranged between the upper und lower halves of the reflector, and a lens arranged in advance of said reflector, the major portion of said lens having flutes for causing lateral distribution ⁇ of light, the extreme upper portion of said lens having flutes', said upper flutes being prismatic and thickest at their lower ends whereby rays of light reflected romthe forward portion of the upper half of reliector are refracted downwardly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Mmm.
E. M. MHI'EEIL,
AUTOMOBILE HEADLIGHT Filed Feb. 9. 1925 2 Sheets-Sheet l A. MmMEL,
AUTOMOBILE HEADLI'GHT mm m 19285,. lsm
Filed Feb. 9, 1925 A f3 Sheets-Sneek 3 lam gives a limited lateral distribution of the eam of light and the prismatic portion in addition to giving a limited amount of lateral distribution also causes a still further bending down of the rays of light which pass through the upper portion of the lens.
Having thus described my invention, what I claim is:
l. In a light projector, the combination with a reflector, of a lamp having two independently lighted filaments, one of said filaments being slightly below the axis of the reflector and the other one slightly above said axis, the upper half of the reflector being in the form of a parabola, the rear portion of the lower half of reflector being also a parabola, the forward -portion ofrthe lower half being carried below and outside the normal curvature of revolution whereby the rays of light from either filament will be directed downwardly, and transition surfaces arranged between the upper and lower halves of the reflector.
2. In a light projector, the combination with a reflector, of a lamp having two independently lighted filaments, one of said filaments being slightly below the axis of the refiector and the other one slightly above said axis, the upper half of the reflector being in the form of a parabola, the rear portion of the lower half of reflector being also a parabola, the forward portion of the lower half being carried below and outside the normal curvature of revolution whereby the rays of light from either filament will be directed downwardly, transition surfaces arranged between the upper und lower halves of the reflector, and a lens arranged in advance of said reflector, the major portion of said lens having flutes for causing lateral distribution `of light, the extreme upper portion of said lens having flutes', said upper flutes being prismatic and thickest at their lower ends whereby rays of light reflected romthe forward portion of the upper half of reliector are refracted downwardly.
In testimony whereof, I hereunto ailix my signature.
CLARENCE A. MICHEL.
US7794A 1925-02-09 1925-02-09 Automobile headlight Expired - Lifetime US1655914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US7794A US1655914A (en) 1925-02-09 1925-02-09 Automobile headlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7794A US1655914A (en) 1925-02-09 1925-02-09 Automobile headlight

Publications (1)

Publication Number Publication Date
US1655914A true US1655914A (en) 1928-01-10

Family

ID=21728176

Family Applications (1)

Application Number Title Priority Date Filing Date
US7794A Expired - Lifetime US1655914A (en) 1925-02-09 1925-02-09 Automobile headlight

Country Status (1)

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US (1) US1655914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985814A (en) * 1989-04-14 1991-01-15 Whelen Technologies, Inc. Warning light with quadruple reflective surfaces
US6089524A (en) * 1999-03-29 2000-07-18 Lai; Jung-Tzu Supporting assembly for a fishing rod on a boat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985814A (en) * 1989-04-14 1991-01-15 Whelen Technologies, Inc. Warning light with quadruple reflective surfaces
US6089524A (en) * 1999-03-29 2000-07-18 Lai; Jung-Tzu Supporting assembly for a fishing rod on a boat

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