US1433703A

US1433703A - Headlight

Info

Publication number: US1433703A
Application number: US312261A
Authority: US
Inventors: Charles W Dake
Original assignee: Pyle National Co
Current assignee: Pyle National Co
Priority date: 1918-07-21
Filing date: 1918-07-21
Publication date: 1922-10-31
Anticipated expiration: 1939-10-31

Description

.a more intense beam of light in combina-teilen Elie tjalk the rays f1-0m he Hgh@ Application To all vwlmi/1, 1i ifi-ay concer/i.: e it known that @Hannan ifi". Dani citizen of the United States, welding ai; Slab cago, in the county of Coole and State oi .l fia-fle its 'l a Illinois, llave invented a certain new and aged in useful improvement in Headlights., or '3` n (inl which the followinfr is a speeiiication. My invention relates to headlights and particularly to those adapted for with w locomotive engines. 'llln'ongli long usage the practice of making locomotive iiea llights of approximately eighteen inches in diameter has become fined in the ait. Were a locomotive headlight to be made of nine inches in diameter although it might give sufficient light foi all nee/eeen j* Join posee, it would not serve, ae might l oil il?. reco nized as a locomotive headlight. Se lirm y fixed has this idea become that it has been found impossible to depart inatei'iaily from the diametei of eighteen inches in mal;- i'n locomotive headlights,

ith the development oi iiigliei poweiefi `lights it llas been found unneceseay ann i v, diilcult to have a higher power iueain ci eo vreatdiameter, anni it has become desifaloie om every point of View to have the beam ect/oi. B la eeraiily alena and smaller and yet foi* tlie "eaeons above ont coated n ...n feilectin material cnvtlie nach? lined it is not possible toA reduce the total, wlieieae the reflector j inail be a reflecting (fsie of the lighted area of the headlight. it surface developed on apdplied to tiie inistl-iei'efore one of the objects of my invenrei'ioif the casinge ci a separateieiiector tion to produce a headlight which will yhave asuilficient enlarged illuminated area and The nee and operation ofmvinventien aire' which in additin will have a sin-allen and as follows:

tliereyvith. l attain this 'regelt-by a coin soniee are gatiiaecl by .une email powerful bination of a smalll exceedingly eiicient ci" reelecto? and :eeleeted directly' ioiwai'i'i bi'iht reectoi' Working with a 'small lens tlnongiz'tlie lens and are by il; concentratef .an a large lesefeicient or dnller reileetoi' and peni gerliin a naifzow 'in li power beam u 'my 'inet pari. oi the lignt which does 40 'and plain glas'eeoveing the entire front of of light.

the illuminated area. My invention lsvillus nozliall apen tide sinallreleetor oi which trated more or less diagrammatlcally inthe falling upon it ie not reflected through the accompanying illustrations,wherelniene, is reiiecced. from the larger porcelain Figure 1` 1s' a front elevation; and reiiector in the main casing' and an pensee out Figure 2 is avel'tical section on the line tlnonggn the plain glass iiont cover. Tinne 1W z-z of Figui-e l. the lieaellin'lit gives a clearly illuminatefl sur* Like parts are indicated by like characters face .of diameter of eighteen inches and throughout Y also a powei'ii-ii concentrated narrow beam A. isa headlight casing, enclosing'and suo of light, in this casse seine eight inches in fio porting the bulk of the other headlight diameteif source. 105

c parts. It has the enlaigecl 'forward rim A1 .l @all the centfal reiiectoi* the piiinarv adapted .to receive a front glass assembly. reiiectoi'anl' l the exteiioi or annular iifieeoi' Its inner surface is lined with oicelain as the eeeonfii f reflector for the iii-st is inat A2A and thus com )rises a Teflector., Els .is .tenflefl to eine lie eti-one' beam of liebt which q n m t an inner supporting frame integral with the will illuminate the track fai' in advance er@ lll the locomotive, While the second is intended to add to the nearby illumination and also to give the light the appearance of being of the usual locomotive headlight size. I have not shown many of the parts which would neces- Asarily be applied to the structure because they form no part of this invention, for example: in the casing there is leftv sutlicient l room at the bottom for the insertion of a proper support and adjusting device for the electric lamp-so that it can be focused. The

arrangement is, of course, particularly applicable for use with electric lamps though I would not wish to be confined to that use.

The light from the lamp passes directly to the lens and also to the seconda-ry reflector and primary reflector. The light is largely 'caught in the primary reflector and reflectedreflector and is thence reflected through the plain glass. I claimil. In a headlight, the combination of a primary reflector with a secondary reflector surrounding 1t, the primary rellector adapted to project a beam of light of high inten.

sity, the secondaryrelector adapted to project a surrounding bea-m of relatively low intensity.

2. In a headlight, the combination of a primary reflector with a secondary reflector, and a lens in front of the primary reflector only, said lens adapted to project light from said primary reflector in a. beam of small diameter and high intensity, said secondary reflector adapted to project a surrounding beam of relatively large diameter and low intcnsity.-

3. In a headlight, the combination'of a primary reflector with a secondary reflector, and a lens in front of the primary reflector only, said primary reflector adapted to project its light only through said lens, .the secondary reilector adapted to project 'no light through said lens.

In testimony whereof, I affix my Signature in the presence of two witnesses this 17th day of July, 19l9.

CHARLES W. DAKF Witnesses: l n

EDrrH L, PORTER, MiLnnnD H. MACKE.