The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1914-04-05
A Page Devoted to the Automobile industry
TIRE TROUBLES
ARE NOW SOLVED

! b. a. Blenner. the pioneer automo-
bile dealer OF Richmond. has the rol-
lowing TO say about This wonderful
invention of the Dayton Airiess Tire
Company, which caves the automobile
owner time and money.
1T is an automobile tire made OF
the very best rubber and fabric; it is
! not solid tire. nor Is II n pneumatic
tire. for II contains no compressed air.
I II is constructed on the game principles
rs a bridge. When an engineer con
structs - bridge. he estimates the
weight the bridge must carry, then
builds the piers 1T intervals, then
builds beams from pier 10 pier Of suf-
hcient strength to carry the load.
Similarly. II Dayton niriess tire is
constructed of piers Of rubber and AN
annular RIB or beam Of straight cut
fabric and rubber OF great strength.
corresponding TO beams In u bridge
When Oh q wheel il looks exactly like
pneumatic tire. and il the same size
The design. or cross section. Of this
ire Is exactly like 4 pneumatic cas-
ing the difference between the two
makes Of tires is tho interior support
ing member The pneumatic tire con-
tains " rubber tube filed with com
pressed air. while the Dayton airlcss
contains piers or columns of rubber
and an arnuiar rib--similar to bridge
construction-so constructed as to give
suihci"nt strength 10 support any
given weight of car, and yet to doliect
or squeeze down so as TO absorb oh
structions in tho same manner az an
air tube in a properly inflated pneu-
matte Constructed as it is with
series of piers columns of elastic
springy rubber. placed an inch or SO
Z apart. 1t cannot be other than easy
riding. and differs greatly from solid
! tires for the reason that rubber Is
20 nt,f
not Misplace or give under pressure
unless II has some place to go"
IN other words, rubber can be dis
placed, but not compressed. In order
10 absorb instructions, therefore, IL Is
absolutely necessary that those omen
spaces exist in the tire, TO permit the
tread surface TO yield or depress when
"a stone Is encountered, and the piers
TO bulge corrcsrondingly into the open
spaces. thus absorbing the obstruction
with :. minimum jar or Jolt.
hen pneumatic tire encounters :;
SINAI! stone. o: other obstruction, the
stone sinks in'o the tire, air is dis
placed and the tire passes over the
stone with a slight vibration or bounce
In the airless tire. the stone sinks into
the tread. the same as In the pneu-
matte; rubber is displaced, and the tire
passes over the stone with actually
less vibration or bounce than the pneu-
matte
The official test was made with
32%3 IL tires running over metal OBJ
sructions on u rigid motal drum uu-
uer load OF 500 pounds The pneu-
matte was inflated TO seventy hounds
pressure, which is the pressure recon-
mended by its nanufe ctures and the
same wheel was used with both tests
The vibration record was taken with
diticrent speeds, ten 20 twenty-five
miles per hour at ten miles thet
bounce or vibration OF the Dayton air
less tire over the obstruction was nftv
one-hundrcdths OF an inch, or half inch
IN height, while the pneumatic. under
exactly the same conditions was tn,
same, or half an inch in height. Ar
about twenty-five miles an hour. which
was the maximum speed of the anna
ratus the vibration OF the Dayton air
less was twenty one -hundredths OF an
men IN height. while the pneumatic
was eighty three one hundredths of an
men. or more than four times the vi
hrauon or bounce caused by the Day
ton airless tire.
hesc tires arr made to TT any kind
OF Tin' and once on never have 10 bo
changed until entirely worn out. which
is on an average OF 5000 10 1000
miles 800