Evening star., 1923-08-21
Plan FOR TESTING
AUTO GLAREuGHTS
Charts Provided in D. c. Ga
RACES to Facilitate Proper
( Focal Adjustment.

Since the passage of state laws IN
all of the northeastern states re-
qupiring non-glaring headlights. and
the determination of the District of
Columbia Commissioners to regulate
this problem in the District. arrange
ments have been made for all local
| motorists to take immediate steps to
see that their headlamps are not only
equipped with approved devices which
are legal in every respect. but most
particularly, that the adjustment Of
the light bulb and reflector should be
made so as to conform with the re-
quirements which are now uniform in
these states. The Washington Motor
Club, in collaboration with the United
States bureau of standards and Wash
ington Safety Council. has prepared
an official headlight chart to facili-
tate the proper focal adjustment for
all makes of cars. This chart, which
Is over eight feet wide and fifty
Inches high. is now located in a num-
ber of garages throughout the Dis
trict,s where headlight testing is now
being made at very nominal charge.
Requirements Cited.
The method of adjustment of the
headlamps requires a space on level
SO that. the motor vehicle can be
placed twenty-five feet from the
chart. The lenses are then removed
and the lamps examined to insure
using only twenty-one candlepower
gas-filled bulbs. 1t may be necessary
to clean and polish the reflector or
to replace dented or rusty ref1ectors.
You should then measure the vertical
distance of center Of headlights above
floor and select corresponding horf-
Zontal lines on the chart. This line
on the chart is the upper limit Of the
adjusted. Measure the horizontal
distance between centers of head
lights and select corresponding YER
tical lines on chart equi-distant from
center line. The official garages nan
! ding this chart have list OF the ap-
proved lenses. which determines the
focus and tilt required by the non.
glare lens. Some lenses require
what IS known as the prlnGlpai
focus. with no tilt. while other lenses
require the principal focus and eilt-
ing adjustment.
The lack of focal adjustment in the
bulb of headlamps is the reason that
over 80 per cent OF the cars IN Ine
District of Columbia are not comply :
| ing with legal requirements. Focai
adjustment. according to the n NJ. A.
lis nothing more than moving the elec,
trio bulb in the headlamp backward
| or forward in the reflector. which al
| ters the form Of the beam of light
projected by the headlight and at the
same time puts light in the proper
place on the road. In making ali ao !,
justments the car should be loaded
| and at least twenty-five feet in front
of the chart.
Method Of Regulation.
| If the adjustment device Is operated
from the outside of the lamp, do not
remove the front lamp glass or lens'
but proceed as follows: Select hori-
zontal black line on the chart the
same height from the ground as the
center Of the headlamps Is from the
ground, Then turn the screw. with
screwdriver. on the outside and rear
| of the headlamp backward or forWard q
until all of the reflected light on the
wall or screen is below the black
| line.
The conference of the motor vehicle
administrators of Connecticut, Maine,
MARYLAND, Massachusetts, New Hamp-
shire. New Jersey. New York. Ohio.
Pennsylvania. Rhode Island and Ver-
mont. with the possible addition OF
Virginia, meets every three months
for the purpose of standardizing mo-
tor SenlCle laWS III tHcSc SldScS- nc
headlight problem is now standard
lied as per the outline furnished above
by the Washington Motor Club.
Ask Protection to Motorists.
Every garage and service station
in the city that has space should
have a light-adjusting chart" de-
clared Edward S. Brashears. at the
meeting this week of the Washington
Motor Club. protection should be
given motorists by all organizations
| in this respect. If the District mo-
torist travels in Virginia. or into
Maryland, Pennsylvania, Delaware,
or New Jersey, he Is now able to have
his lights adjusted so as to conform
with all legal requirements in all
states and at a minimum of expense"
Garages equipped with headlights
charts are as follows: Barretts' ga
rage, oath and NJ streets northwest: :
Brookland garage. 1000 Michigan ave-
station, $3.50 Georgia avenue north
west: Congressional garage. 626
Pennsylvania avenue southeast;
Creel Brothers. 1912 14th street
northwest; Gutridge garage. 1919 l.
street northwest; Irving Street ga
rage. 1925 Irving street northwest; (;
Liberty garage, Florida avenue and
U street northwest; Ninth Street ga
rage, 1924 9th street northwest; New
Royal garage, 1915 l. street north
west: Washington Accessories Com
pany, 18th and l. streets northwest.
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