Los Angeles herald., 1910-12-26
NEW SPEED DEVICE
HAS DIAL LIKE CLOCK

An entirely new and ingenious speed
indicating device will be shown for
the first tinae at Madison Square Gar
den.
The basic principle on which these
instruments are constructed is the es-
capemen.t principle of a clock giving a
reading on the dial in terms of miles
per hopr. This reading is an average
speed reading because the indication
is not recorded until one-thirtieth of a
mile has been Travelled. on starting the
car dhe spePt hand is shown at five
miles per hour and the next reading
is shown after the car has actually
travelled 176 feet and the next reading
after 1t has covered the second 176
feet and so forth. 1t has been slightly
BerpleXing to the owner at first as he
has been accustomed to have the indi-
I cation recorded when the car has been
! moved, as for example when it is be-
ing moved across a garage floor or
some other place.
The time indications show actual
running time for trip and season-in-
terestiing information for the tourist.
While the instruments for pleasure
vehicles record the speed of a car up
to sixty miles per hour, an entirely
new instrument is offered for the first
time with readings up to 100 miles per
hour-the object of this latest model
may easily be appreciated after a little
thought. 1t is a combination inStru-
ment by that is meant that either in
dication may be used. Where speed
readings up to thirty miles an hour
only are desired the markings on the
dial are divided into spaces of a mile,
between five and thirty miles, while
above thirty miles the markings are
divided into two mile spaces. When
high speed readings above thirty miles
an hour are desired it is possible to
ascertain a closer reading from the up
per markings on the dial, by an in
genious device, the operation of which
is accomplished from the outside of the
case. The upper Celebrations are now
divided into two mile spaces from ten
to sixty miles and four mile spaces
from sixty to 100 miles.
Seven separate and distinctive read
ings are possible from these instru-
mentS, the average speed In terms or
miles an hour this reading is shown
every thirtieth of a mile or every four
seconds on car travelling thirty miles
an hour; trip miles; actual running
time for the trip-from the last two
readings may easily be figured the
average speed of the car for the trip
complete season mileage-actual run
ming time for the season, and from the
last two readings the average speed
for the season may be easily figured.
The indicator is operated by means
of flexible shaft driven by the front
wheel which automatically winds the
mechanism of the indicator every 176
feet and revolves 16S times to the mile,
or about one-fourth as fast as the
front Wheel therefore shaft difficulties
are practically eliminated. The shaft
used on these instruments is of suff-
cient strength to drive ten instruments.
Slow moving parts are essential to long
life, durability and freedom from
troubles due to friction and wear. The
fastest moving part of the instruments
revolves only thirty times to the mile.
Although the mechanism is the es-
capement principle of clock it is ap-
parent that the life of these instru-
ments is unlimited as the necessary
spring tension for the mechanism is so
slight, it being wound for few sec
onds at a time, when compared to the
spring tension required for an eight
day or even a one-day clock.
Sixteen different models are being
made which include the instruments
singly and with different clock COM
binatiOnS