US1986351A

US1986351A - Head lamp

Info

Publication number: US1986351A
Application number: US702842A
Authority: US
Inventors: Thomas G Melish
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-12-18
Filing date: 1933-12-18
Publication date: 1935-01-01
Anticipated expiration: 1952-01-01

Description

T. G. MELISH Jan. I, 1935.

HEAD LAMP Filed Dec. 18, 1933 1s Sheets-Sheet 1 Ma 'm,

ATTORNEYS T. G. MELISH Jan. 1 1935.

HEAD LAMP Filed Dec. 18, 1933 ,5 Shets-Sheet 2 INVENTOR Jan. 1, 1935.

T. c. MELISH HEAD LAMP Filed Dec. 18, 1933 5 Shee'ts-Sheet 3 I NVENTOR I ATTO RNEY6 Patented Jan. 1, 1935 UNITED 'STAT;E,1S,PATENT OFFICE 11,986,351? r e i nEAnLAMr ThomasG. Melish, Cincinnati, Ohio "Application December is, 1933, Serial No. 702,842 12 Claims. "(aim-44.25).

This invention relates to improvements in head: the'fixture mounted as in the form shown inFiglights, particularly for automobiles, inwhichthe ure 1 upon the inner side ofthe outer casing. light is a double filament lamp bulb having its Figure 5 is a section on line 5-5, Figure 4; filaments relatively disposed one above another, Figure 6 is a section on line 6-6; Figure 5.

5 and in relation to the focal axis of thereflector j Figure 7 is aperspective view of a modified form 5 of the headlamp, and upon independently enerofflxture of the types shown in Figures 4 to 6 gizing the filaments,different angular directions inclusive. of light beam reflection is obtained as upwardor Figure 8 is a central horizontal section through downward. the rear portion of a headlamp casing and relO The object, of this invention is to provideinex flector disclosing another modified form of lamp 1o" pensive means to move the lamp bulbhorizontally, bulb fixture as applied to the rear side of the" sidewise so as to throw the light beam toward one reflector. side of the road away from the eyes of the driver Figure 9is a front elevation thereof. of an approaching automobile, the lamp bulb 'Iamfamiliar with the fact that various methl5 movement resulting in diverting the, light beam o dsare employed by manufacturers of automofrom either of the specificdirections obtained by bile headlight lamps to efiect a so-called passseparately energizing the filaments in the normal ing beam. 7 l position of the lamp bulb within thereflector to One method employed is to equip the lamps a direction at an angle thereto'as from either with three, filament bulbs, two filaments being 0 up and down to right or left, depending upon the positioned one above the other, and the third'off to horizontal direction the bulb is movedfrom its oneside. The upper and lower filaments are used normal position within the reflector. j todirect the light either near the motorcar, or In the present instance, with theuse of the we up on the road at a distance from the canand the filament lamp bulb, the filaments positioned 'one thirdffllament is used tc'direct the light to the 5 above the other, up or down light beainreflection side of the road, away from the eyes of the is controlled byenergizingone or the otherof approaching motorist. the filaments. The upper filament obviouslywith This method of directing the light beam to one the usual type of reflector will throw "thebeam side hasthe following disadvantages. For a short down on the road near the-car, whileflthe lower interval of time, as the light is switched from one filament when energized willthrow the beamfup filament to another, the road is dark. The pres 30 and at a greater distance. Thisso-called'driving ent invention contemplates reducing the expense beam which throws the light for a long distance of effecting a passing beam by the use of the ahead ordinarily blinds the approaching driver. ordinary small two filament bulb and an inexpen- The'object of this invention is to divert the drivsive mechanism to swing it sideways. v

ing beam to the right-hand side of the-road out The structures of the outer casing and reflector 35 of the eyes of approaching motorists by shifting differ from one another in headlamps used for the lamp bulb sidewise temporarily without devarious'makes and grades of automobiles. Thereenergizing the filament until the approaching car fore; slight modifications in the light bulb holding has p s e fixtures are required to make the same readily 0 Various other features and advantagesof the available foruse in thepresent various types of 40 invention will be'more fully set forth-in the deheadlamps. In each case however the movement scription of the accompanying drawings, in of the two filament light bulb is substantially which: horizontaland the results are the same.

Figure 1 is a horizontal" section through the '*R.eferringto the drawings, 1 indicates the rear rear portion of an automobile headlamp" casing portion of an automobile headlamp casing and 2 45 and reflector, showing a lamp holding'flxture for the rear portion of a reflector mounted within the swinging the lamp bulb horizontally sidewise with casing and in spaced relation thereto. The genthe fulcrum in rear of the lamp bulb'socket and eral construction of headlamp not forming a part fixed to the inner sideof the outer casing. of the present invention, no detailed disclosure 0 Figure 2 isa front elevation of the-same. thereof is made herein, andit may follow any of Figure 3 is a section on line 33; Figure 1. the commercial designs now used with a reflector Figure 4 is a vertical section through the rear preferably of parabolic type. portion of a headlamp casing and reflector of a 3 indicates the commercial double filament elecmodified form of lamp bulb holding fixture with tric light, bulb removably engaged into the forthe fulcrum located above the lamp socket and ward end of a double end bayonet type of socket 5 4 h e f dl hesl e of. heibracket carrying a stopscrew' 2 4. The socket is positioned to mount the light bulb with its filaments one above the other at relatively opposite sides of a horizontal line through the focal axis of the reflector. A circuit lead connector plug 5 is engaged into the rear end of the socket 4-. for making the necessary circuit connections with the lamp bulb filaments through the socket in the well-known manner.

In the form of light bulb socket fixture shown in Figures 1 tov 3inclusive, the socket tiis longi tudinally slidably mounted within the iiforward end of a hinged arm 6,pivotally mounted upon a bracket '7 fixed to the inside of a headlamp outer; casing 1. The socket at its upper side is provided with a laterally vertically extended lug 8 engaged by a set-screw 9 connecting with thehinge d, arm 6 for making the required focal adjustment of the lightbulb.

The bracket 7 is of prong configuration providing a pair of oppositely disposed arms 7a'-'7a,--

one carrying an .electro-magnet 10 for attracting or swinging. the. arm. to one side from its central or normal focal'plo 'tion of the light bulb to. offset the same fronithe'. focal axis of the reflector for diverting the. light beam from either up. or down direction obtained. by selectively energizing either of the filaments to a sidewise direction without deenergizingthe filament in service,

A spring 1 ;1 having one, end fiiiedjtoj, the socket carry a e it e light ul -field n x ur ha'sjts opposite end fixed to one end of a screw 12 engaged through an arm 7a of the bracke-tfi, the, spring serving toiswing, thearm to its normalpgisi tion against a stop screw 13 carried by therarrn 77a of. the nature whenv the magnet 10, is,i lee'nergized.

, itemod d rm of xt re. 'ile F g re 4 to 6 inclusive in'detail is substantially t p A I the type of fixtures shown in lffigu-r sl to 3 inclusive'flexcepting that} the fixture is. mounted ee -ihe n i e e ut ee 'l n a. v r all eeeit en ea o o z nta l r n i he oulrm of the s n n a Y lt g ebev the eeeket i. In F ure- 7 h h ul e ek the eliiiefi ture e m i e-d h e m al m ne leemer eine. a cradle 14 having'a pair of spaced parallel limbs lee- .5 e e ttur i ir e he i n r. 4-. Th i u r ends .ere t 1r e iqu l ed en heat ra ext sio 610 a i" The ek aden ed efhe i i ll fixe l'b anytw lk w me n cu oh her'ear. ide or the headlamprefiector. Thebracket is providedwith a eieef pac ara im e l t i for enporting an electroemagnet 10. cooperating with a 1iInb,18

w h a eeeerid imb ef'the e dieaii ashes dieg. a e neee ie'n f e in eerme m: with the cradlefor normalizing the cradle when thema gnetis,deenelgized, I p p n the modi ed: ms he n fi ures 1 .ll n us v th fi tur pro d s a h tlme l bracket l'l somewhat similar to the brackets ow'ii eagerpt h t at 1 m n i ht.- b lb ee lset d r e ly meunte ueea the bracket; nga ed b en and pivei d w arer bf ars; or i bs z eazz, la a lyiex ne na esaee tivelyfrom the opposite. edges of the, base and central-lythereof a .z i

, In Fi ure. latheo mali ings r n -2 i he ls-ee or soeketed. Wi hi he. i the. ewe Q e magnet engages ire raea iet th eqelsete- In Figure 11 the socket 4 at its rear end has a collar 23 fixed thereon providing an armature cooperating'with the magnet 10. The electro-magnet 10 provides a means for swinging the socket under remote control as for instance, by operating a push button electric circuit closing switch either by the hand or foot of the operator, to temporarily shift the bulb and its socket to one side of its normal position as long as the circuit is e l sheet y he ia e la h Pe t-m ne ee e' he h ad am the light bulb andits socket are stationed in a proper to cal location with respect to the reflector. The electric circuit for the filaments is remotely conloulha, light beam isrefiected in an angular direction downwardly and when the lower filament is energized the beam will be directed upwardly. ;Whenever occasion requires, the light beam can befdiyerted fronreither its up or down direction by-energizingthe electro magnet 10 which when energized will instantlyfswing the light socket andbulb to one side-resulting in a diversion of the beam sidewise as'toward the righthand si eoj.the,,.'roadway, without any break in the i ht.

Having described my invention, I claim:

1, In anautomobile headlamp, a casing, a refi ec t or within the. casing, an electric light bulb holdingQfi ture mounted in rear of the reflector ng o ably sustaining a lamp bulb socket passing t l opening. in the vertex of the reflector. the socketcarryin'g' a light bulbequipped with twofilaments positionedone. above the other and at relatively. opposite sides of the focal axis of the reflector; said fixture. constituting a bracket 1, ba 'eieeefa a r 5 s t d s e. ms te ellr estene e ireinthe bas a th r an e ev 1 b t e n; eer e, a es be th s ead:

carrying said lampsocket, lectro-magnet cartie l PM are eiaie fi men i e ie nd he rm-a ai t id t p sc mine-th ee ie n p 11? ef ec -i ,asiea, a brack mo in a lame u ke pi e l Wheel-en a s through c. e v rt x ef th refl c o t ali ht bulb qui ped wi h two filaments positioned one above the other at relat iie si, Peesi eeides. Q? the iq a of t e ee e z eptrorma net mo n d n a d.

a one sideof thesocket and when ener.-,

cooperating with the socket to swing the gized sooketin alateral -ofiset relation to the focal axis 9 the ne leetec ha to e e on s d bracket at a; dc-of the. socketopposite said electro-magnet