| Show LIGHT PROBLEM BEING STUDIED Automotive Engineers Test Types of Head head- headlamp Headlamp lamp Designs In an nn effort to help the he auto auto- automotive automotive motive motive- Ind Industry stry to find n a a sails satis sas- sas satisfactory factory solution of ot Iho the automobile problem the th Soci Society ety 0 ot of Automotive Is prepared arranging a 0 carefully prepared program of fundamental research In operation co-operation with tho the Illuminating Engineering En society and the bureau of ot standards As now planned the car build builders ers whoso assistance li Iv will prepare test cars equipped with experimental head lamps and study such patterns of light distribution as thy they believe will give c 1 tho the belt road Illumination with least east annoyance to their highway Users Suitable test equipment for this purpose has been ben designed by a IL committee of ot experts It consists of ot a n bar to bo ba mounted At tho the front of the th car and lup sup sup- supporting up porting four tour special head lamps lamp In such a way that can be aimed singly or collectively The rho com COlD complete bar with lamps In to place can bo be removed without disturb disturb- disturbIng leg Ing tho lump hemp to fa- fa facilitate fa facilitate making r measurements or of orthe the light Two pairs pair of lamps can be mounted on tho the test car carIn carin carIn In such a 11 way ay that the tho th driver can switch twitch the tho current from from one pair to the tho other under actual operating conditions condition and so makon make mako n a direct comparison of tho light licht from the different lamps can be he varied by adjust adjust- adjustment ment ment of rheostat while tho ho car carIs carIs Is h In n motion An auxiliary Ine bytho bythe In leg light Is also provided for tor by the tho design This and similar lIar equipments hove have already been fitted filled to a 3 number of cars by the General Motors corporation tho the National Lamp works work the tho Outdo Guido Motor Lamp Manufacturing company and H If C Dickinson of ot the bu- bu bu bureau reau roan of standards In testing te re- re I suits obtained from them hard hufi presented at meeting of th the society butth investigation Is ll toJ continuo continue for tor somo some time |