US1281916A - Headlight-dimmer. - Google Patents

Description

Patented Get. 15, 1918.

' Inventor, 1a-Ven Draper:

narran WARREN maarre, or sLas'DEL-L, new rozen, sssreues 'no COMPANY, a eonroaairroir or i Specieation of tl'etters Patent.

i ,esista York, have invented certain neu* and useful Improvements `in Headlight-Dimmers, of which the following is a specification. "My invention relates to aA dimmer or screen for a headlight, and has for its ohjeet the. l0 improvement in a device et this Character.

For Certain classes orp service., particularly for interurhan trolley headlights are required Which project a poweru 'ful beam of light` in order that objects 15. be detected vWell in advance of the cai. V/vithu in city limitse however, the use oir van intense light of this character is objectionable inasmuch as it exerts a blinding` effect on pedestrians and on the operators ot other vehicles, and laws have been passed in a great many municipalities forbidding vthe use Within the city limits ot headlights having dazzling' lights. ln acoordance with my invention, ascreen is provided between the light source and the Window of the headlight, which operable from Without the headlighJr and which is related to the eop- I erating parts in Such a Way as to 'form a sim.- ple and compact arrangement, and one juwhich the screen is readilynioved 'either a position to intercept the direct rays Jfrom the light source, or to a position Where the rays are permitted to pass freely through the Window or lens of the headlight. 'My in vention also provides a device of this eharacter which is positively held by gravity in each of these positions.

In. the. accompanying;w drawings in which l have shown one embodiment of my inven- 40 tion and in which lilre reference Characters are applied to like parts, Figure l is a longitudinal section through hodying my invention; Fig. 2 is an elevation on the line 2 2 of Fig. l; and Fig. 3 is a plan vieW of certain details.

Referring how to the drawings, 1G is the casing of a headlight which may-oe of the usual form, and which may be attached to the front ll of a car by means of the usual straps l2. rlhe headlight is provided with a Window or lens 13 which may be of any desired construction. 1

l have illustrated my invention in connecf tion with luminous are `headlight.;that

`` to say1 a headlight in"` whichl the source 'of Application lledzugust i5,

' he understood, however" its lower end with a heavjyY hess e.-

a headlight ein-v light. is an are formed h v' earning electrode and aierlend luminosity #equally .applieahle to it.) Li vsn' diierent character et" are producer'l in fact to headligrl in wh sources are employed. i' suniing anode is ence character l suming cathode foy l5. The upper electr: vided with radiating w slots in chimney l?, awaythe vapors 'n oduced by as is Well under d in lower. electrode is ported or which pivoted to a stationa 18a, and connected of a lever pivoted 2tlg. end of this lever is connected al; Clutch 2Q to the armature 2?: 'ii magnet 2li. rl'he eonstructio of these parts are -well und f" and as my present invention is rf with the paitieular mec-hams i electrode operated. this lnot be further described.

A dish. shaped dinnner or screen which is preferably bent over at its app` f e at 26. is secured to an 7. extends along' 'the diarree" o the d'i'i beyond the center thereof, and forme;

arm has 'at its upper end ears 28 and y29.

the former of '.vhieh projects at right angles,' to the plane of the While the is .bent over into a plane pt jail-.el wi'fn said screen. shaft or 30.) the outer end of which is journaled in boss 30a, secu. to the easing, through the E23 eid through the sides of a lll-shaped hraelret el. vand is secured to the as hy sere?.T 30". ln this manner the dimmer 25 vvliieh is secured to the bar 27. hangs normally down in a pendulous manner, and hy' reason of the weighty boss 27, the center off' gravity of this pendulum is far loeloiv its pivotal support. Irlhe bracket 3l is preferably sonie- 05 fed with an vinsulating section as(shoWn at 'which is attached to the casing by e screw i T his is inserted to prevent short circuit between the electrodes since one end of this bar und the parte associated therewith are mounted directly on the rit-dieting wing of the upper electrode. A pinion is mounted on the outer end o'tthe bar or shaftBO, end engages u rock formed oil-the end oit' u ber 3G. ilhs uur pus-ses through guide members 36, us indicated in Fig. I3, and ex tends outside ot' the' casing oi the headlight.

'This bei ,is ,operated bye second bei' '37 v "which is here shown as extending through the dashboard 38 of s. cer, and* is provided this outer end with e handle 39, which is readily accessible to the i'notorman. T he bar 37 is preferably connected to the bar 36 by o hook e0, engaging e corresponding open- 45. rThis sinne bracket may, es shown, support the chimney and the parts lassociated therewith. v I

Assuming that the screen is in the position shown 'in Fig. .i by solid lines, it will be isbserved that is ,of e torni to intercept' ci: the direct roys light from lthe vvsource, and the only iight passing through the lens or window 1? will be that which is redirected i'roxn the reflector 43. Now, if it is desired to project e powerful beam from the headlight, it is onlyJ necessary for they motorniun to pull the handle 39 to the posi'- tion indicetedby ootted lines 1n Fig. l, when the ruck wilt. rotetein the pinion 34 and cause the screen to be' swung upwardly end occupy they position indicttedl by dottedv lines. Since the center of gravity of the screen rs below the axis of rotation of the seine, 'when the screen is in the position iin dicetcd by iiuil iincs in Fig'. l, it will be ap purent that tho center of gravity xviii occupy the highest point when the screen been revolved througl 180 degrees, end that when the screen isl i., volved through sometllinv" more than this ongle to the position indicated by dotted -lines in Fig. l where it moisi@ to the movement of the vehicle on which it` is carried.

lin accordance with the provisions of the patent statutes, l have described the principie of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but l desire to have it understood that the appw retus shown is only illustrative, land that the invention can be carried out by other ineens.

V'Vhat l claim as new and desire to secure by Letters Patent of the United States, is

l. ln a headlight comprising a casing, a front lens or window, and e source of light, e. horizontally pivoted pendulous screen hav ing its center of gravity remote from the pivot and movable-from a substantially. vertical position in stable equilibrium between `the source of light and seid Window upward through something more thun'one hundred eighty degrees to another position of stable equilibrium, e stop for said screen in its upward position, and 'Ineens for thus moving 3. A heudlight comprising e casing pro-1.,.

vided 'with e Window and e source of light within the casing, e pendulo'us screen movable from its ree position of stable equilibrium between the source of light and the window to another position et' stable equilibrium out of the pat-h of light through the window, means for thus niovingthe screen,

and e stop'for the screen in its second position.

n witness whereof have hereuntoV set hand this 12th dey ot August, 3,931.6.

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