New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1914-08-02
lew SPRING OFFERS
Low TIRE EXPENSE
Iir Cushions, with Auto
matte Regulator, AT
ford Relief.
)EVICE CONSIDERED
A GREAT ADVANCE
Riding on Air" Becomes a
Reality, According to Experts
Who Have Made Tests.

#f'fhe era OF low tire upkeep for pas
&1tngor and commercial automobiles sp-
tnears 20 have been brought appreciably
nearer II new type Of spring proves
~ be as satisfactory in general use as
|has proved with few cars.
1hc new device an air cushion
4l,ring. which entirely 6iSplaces the
fIee spring a. present universally IN
I'd has been demonstrated in the last
ftE weeks by the Cox Pneumatic Cush-
"a Company. Of 20l0 Broadway, and,
81 the opinion Of many experts, who
&ve subjected 10 20 arduous tests, II
taswers fully every demand, and stands
6ot as probaly the most important aG-
<hnct ment IN motor car development IN
3tveral years.
The Cox cushion is not exactly new,
having been seen here some time ago,
Boz It's qualities have been bettered
lthrough constant tests, and its spon sors
|consider u to-day 10 have reached its
thighest development.
y 7 be new device Is, in short, an air
~ shion, In connection with an air
81 X placed under the body of the
s hicle. by which every shock. no mat
how severe, is diifused so thorough
n that II can hardly be felt in the body
|of the vehicle. In connection with THIS
IS an air regulator, so arranged tnat
the air pressure increases ard de-
|crcases automatically, in accordance
with the load.
Through the action of the regulator
the chassis, although resting on the
air spring, remains at a given distance
from the axle, irrespective Of the load,
thus affording the same riding quail
Ltics, whether the car has full load
|or only one occupant The action CT
therregulator, as shown on six-cyl-
izher Knox car, is almost instantane-
T0us.
With the car empty the pressure
gauge shows about twenty pounds, or
enough TO keep the body at the cor
rect height above the aXles. As one
after another passenger steps on the
car the gauge hand moves up, showing
that the Or ssure has increaS TO take
care of the increasing load, until the
ear is loaded. When the car is un-
loaded the process is reversed, each &C.
crease being marked by a decrease In
the pressure.
II is a perfect variable spring, and
the effect obtained would be possible
with the present type Of steel spring
only if a leaf could be added or taken
out in order 90 make the quality Of
the riding conform with the weight OF
the passengers.
The action of the new spring in pro-
longing tire life lies in the fact that 1t
is Impossible TO set up vibration IN
rubber, therefore the tires under the
Bdr springs will not suffer through
|scoring," so common on rough pave
|ment or roads because of vibration set
|up in steel springs. II has been de-
|nonstrated that solid tires with the
new air springs will last more than
twice as long as with the ordinary steel
Igprings. Pnuematic tires seem to enjoy
l. he same immunity from wear.
II REQUIRES little stretch Of magma
hon to see the effect of the new de-
Nice on the motor which, Literally
Eriding on air" has at last reached the
Emo trouble" stage. -,
The Cox pneumatic cushion, unlike
other devices utilizing an air cushion
does not disfgure the car. Indeed, tne
Knox, on which il is now being de-
attracts absolutely no at
tention on the streets.