US1761811A - Head lamp - Google Patents

Description

E. P. BONE J1me 3, 1930.

HEAD LAMP Filed Feb. 17, 1928 INVENTOR.

ATE EY.

I I 1 T Patented Jae 3,1930 I v 1,761,811

7 35' nary'conditionabut capable of prompt adsolenoid 9 td'theflring 5. The'soleno'id 9 it? w as; PATENT Evan r. BONE; F CINCINNATI, euro HEAD LAMP Application filed February 17, 1928. serial Nd. 255, 121-.;

v My invention relates to headlamps and In the'particular embodiment of my inven more particularly to means within the headtion selected for illustration: lamps for casting a shadow in the projected Fig. 1 is a vertical axial section through a light beam in the area striking the eyes of the headlamp in which my inventio'ri i's included, a driver of an opposing vehicle. a 4 from frontto back, showing the rays as they Every headlampprojects a light image. emerge from the headlampfand tlie image This imageis formed either by alight conthattheycastupon awall, j l 'centrating reflectoror 'oneor more suitable F 1g: 2; an" enlarged detail, is'anxelevatiofi lens or by a combinationv of a concentrating of the unitincluding the screen o erated by a reflector and a lens. In some instances the rotary solenoid, g i I v a image is circular and formed simply by the .Fig. 3 is an axial section'ofi{thej solenoid substantially uniform concentrat on of the with the armatures and their shaft shown in lightrays from the source of light within the fulhand a I i (v headlamps and is substantially uniform 1n Fi 4 1 a Se ti n th li e 4-; 4'of 3'. I

r a light, intensity over the entire area. Other I have here-shown} for purposes ofjillus 3:5

aheadlamps project the rays in such' a man- I tration only the preferredform of headlamp, ner as to form av lightimage of any desired in which thisinvention may housed, and the shape. and of varying intensity on different combination horizontal d, V fil e g in;

V 'portionsof the image. a i can'descentjlarnp. which is the subject of the Manyheadlamps heretofore devised have invention in my co=pending application; Se 76 provided divers means for preventing glare rial 250Q549 for method o' f aind means for in the eyes of the driver of an opposing veilluminatinga roadWay,-file'd'Jan. 3'Oth',-l92 8 i' hicle. Such headlamps vare provided with Referring'noyvto the draiv'inglj is aheadi tilting reflectors or various types of dlmmers lamp casing Within the rear part of which is and in P r accomplish the result Of t secured a "reflector 2' and an incandescent i f vention, however, certain disadvantages neclamp A piano convert lens ijissecured'in essarily follow, In cutting off the light rays any suitablemanner inthe front of the (ya-s above and to the left, these previous devices ing, and ring 5 is removably secured tothe alsoicutiofi the rays to the right and illuminainner periphery of the casing l? and supports tion'of the; roadway-for any appreciable disa fined translucent screen 6 horizontally tance ahead isprevented'. V j l mounted. The two sectionsfof the casingblf The principal object of my invention is-to are 's'ecured together in any suitable manner. provide a headlamp. with full illuminating The brackets orsupports'7 and s'prereeably capacity for the entireroadvvayunder ordiformed integral vj'vith the ring 5 firmly ho'ld justment to cast apronounced shadow over cpnsistsof ja-casirfg-loand ends$11ana12I the area within whichwould be locatedthe The; p le pieces 13 and 'l lof iron or' other 7 eyes of the drivers of oncoming vehicles, vvithn agnetic'- material within the casing 103 's" out-ailec't'i nggtheilluminationof other areas. seou'red thereto by'screws' 15. Thesliafts I6 [Another objector-my invention is to proandBlto which isrigidly seciifl'efdj-tlie, armaf' fvide means to accomplish theabove object ture- 32'having' enlargementsii; an "18; are that may beinstantly and easily operated as journalled in the ends 11 and 12 61?" otationf desired from any convenient place such as the The" Wire 7 19 f-rom any suitable" source of dashboard'of anautomobile. electricalenergy'supply'-(notjshoyvfrfipasses" v ,ijf Another object of my invention is to prothrough an aperture 20 -iii the end] 12 and is e vide' simple Ineans to accomplish this object spirally Wound around shaft that are easily constructedand'reasonably in diately inside ofthecasing 10' andthen passexpensive to manufacturer ing b th armamreen argeraeneir is -weana 7 @These objects I accomplish b providing a around the armature'at 2l 'ja ismallfniovable screen within tie headlamp. edeatsggzsx: a 1w 1. i i 7 2 1 I g I 1,761,

- cured to an arm 24; is connected to'the'bloek '25 on the end of the shaft 16. i

vWhenelectricity passes through the; wire 19 into the solenoid there-1s a magnetic attraction between the armature enlargements 17 and l8and the'pole pieces13 and 14, so that the parts" takethe positions: shown 111 full lines in Figs. 1 and 4, and when the elec trieal circuit is discontinued, there" islno' longer any magnetic attraction an'dthesereen shown in dotted lines'in Figs. 1 and 4. I When the'screen'is in operative; or full, line position as shown in Fig. 1,'an image is cast on fthe;b0t1d 26 as shown "Theincandescent ,invention,as -appliedito alparticular type of V p V e 1 headlampfljdo notlwish tobe limite'dto this 7 7 o I V I 'fo'rrn alone since it mayhensed with anytype Y I a a; n a

. of headlamp whether using such a screen as theone indicated at 6 or .with one usin m a V sereen at all; and likewise any suitable reflecor v tor, lens or ineandeseentlampfl 'mayThe em larnp here usedle'asts an i'rnage in the general f A form) of an isoscelesjtriangle" 27, with an inv tensellightspot'28 near the ape Theshadow1 29 is eastbythe fixed screen 6 and the darkest spot 3O isfeastloy theinovable opaqnesereen 2853i; an areaiwhieh it oanreadily lee seen I will-include the eyes-of driver of an' oppos j ingvehicle Although 'I .hane shown and deserihed.

ployed.

by LettersPatent. of the United States :1 V

In combination withaheadlamp haiving I ;o I

. g a 'sourcejof light and'means for projectinga' j a i ht m e b e ab o cr n ch he f i r in. operative'position intercepts part of the light raysftoform a'fshadow inrthe light'image,.a.s'olenoid ha vingia,rotating core and means f or rlgidly seeurlngsaid sereento said core for rotationi 2. vInoombination withfa headlamphaving.

45 a translucent screen 5 horizontally disposed" 7 o Within said headlamp in thelp'ath of rQme-ofthe projected rays reducing theintensity of i illlirninationfofLthoseQrays passing there: through', v a rotatable-snbstantially(opaque' LY i' "screen-n allynewtth P IQtthe.l g t V my ys enq -hav se otat ng coreia'ndv s 7 means forj rigidly secnringsaid ;.r otatable f a V l c 'eenf clG re, Said so eno androtatable means 1-:torl'proj ecting ,a light v image, a fixed when operative positionto substantially intercept those rays. striking fit, a solenoid having a rotating coreand means forrigidlyff r I securing said rotatable screenato said core; 1

jected; light rays. V-

I testimony whereof 111598? hriiiito at my'hand v a a moves tsaitljjscree l into," the ath of: some. of

' 'na tiq wi hfii-"headlanlpihav, 7 mans Profiting Z i ight image, a; a rfi ihq izontallyfdi po d h s a a headlamp-Lin the Path i -some.bfitheprojet; ed raysreducingthe int n it fi "(If those rays passing th tgt a mtat;

i P rays gwn weight jand"adapt d:

Q EVAN i Bonn 1 23 by its own weight'falls into the position; I g

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