Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1918-09-22

the spring shown. the spring acting
moro as guide.
when % is desired 20 let air out Of
the tire. the plunEer s is pressed in,
which will press the flhuge n away
from It's washer and 30 let the air
escape around the plungor when
tho tire ls being blown up. tho pres
sure ~ tho top ~ the fI.nge X Will
bo greater than that lnathe tube and
10 the flange will be pressed down
just as n ls when tho plunFer lB
pressed down. aud 40 allow the air
to enter around tho plunror. The
moment pumping is stopped tho
pressure Inside the tube viii be
greater thlu that outrft. ond the
f1uro will again Doe pressed against
the washer and go prevent the -ss
cape of The air.
A SLOW leak" that e. when tho
tire becomes flat over night or in
two or three days, is usually due
90 a defect in the valve inside. tho
rubber washers being worn or torn.
Replacing tho valve inside Nt cost
but o contsl. D. the remedy You
can tell when the valve is leaking
by putting drop of~atcr or saliva.
on the mouth OF the valve n a.
leaks the saliva viii form m bubbles
}Screwing the valve inside I'm "A little
harder will often remedy the trouble
but too much strength must not be
used In doing this DO not use
pair OF plyers
Figure is a picture of the valve
cap Note the rubber washer a
Sometimes this washer becomes rr.
versed or out OF position. and when
the cap is screwed on 10 the valve.
this washer will prceV on tho pluuPer
and 30 cause the tire 20 leak It.
should be looked at every time the
cap Is put on.
Tn addition 20 cover 20 keep out
dirt and to help iu preventing the
escape of the air, the yalvc-cnp is 20
tool Tor removing and replacing the
valve -insldes." Note the notchoa boz
tho top part Of the cap. n this
thinner top part is inserted into the
valve, the notchcg viii grip pr1ugs
of the screw OF the valve inside and
so give a means 90 unscrew it
Figure shows a cross-section ot
a typical casing or shoe a les the
fabric. II Is In the fabric that tho
strength of the tire is. and any
weakness In II viii result In the tube
bursting through H. This IS what
happens when tho tire blows. ON. "
rs the rubber or tread" az tire.
the function of which Is 10 give the
tire long wearing and ground grip.
ping surface, also 90 give certain
amount of rushioning action and
protection Tor the fabric.
As any defect In the fabric will
cause blowout of the tire, care ~
tires results itself into preventing
any harm 60 e. Thus the protcctns
rubber or tread must be kr"' cree
from holes, 80 that dirt and moisture
cannot get at the fabric and the tire
must be kept fairly well inflated so
a. 20 prevent the constant hou1inr
OF the fabric. which would result
from a soft tire The rims must Dee
kept free OF rust and grF or the
fabric will quickly wear at ths rim.
resulting In what Is termed a "rim-
cut" A large proportion OF "hlow-
outs are due 70 the latter cause.
Tires are made with three tyncs
OF beads which Is the portion
marked G In figure 3. namely.
ciincher. quick detachable cinchpr.
and straight side or head when "a
tire Is purchased rho type must be
specified. ana owners would do we'll
therefore, to know the type they ro-.
qulre,
Figure 3 shows the plain cliuchcr
tire, Al first glance this would ape
pear 20 be the same as the q ID
clincher figure 4. but differs lu that
the bead Is soft and can DC stretched
enough 20 80 over the rim. while
tho Q. u. cnnchcr has stiff bead
there being q number ot steel cables
running through the beads. as shown
In figure 4, IN many makes
Figure b shows the straIrlt-sIlo
tire obviously this could not Dee
used ON clinchcr rim. nor could
he cliucher tire be put ON rs rim
Inventors and designers have.
Given much thought 10 making tires
RS strong us possible, and toamlre
them puurturc pT0of Thus we have
the Shvcrtown Cord tire. IN which
cords take the place Of the fabric.
and a number Of makes OF tiru4. In
which steel inserts are nodded into
the rubber 10 prevent puncturcs.
In purchasing tire h Is best 90
SO by reputation or tho experience
OF others. us the eve is q poor guide
even 90 experienced tire mon
There must boz Just tho right thick
ness of rubber over tho tahrie. too
much being as bad. n not worse.
than too little when tho rubber Is
too thick the tire viii bend Iu Ger
tain spots only. with "a resultant
weakening of those spots, u is also
well 20 avoid new makes of tires
having heavy 'anu-skid knobs n
has cost some of tho older makers
OF tiros USING these knobs fortune
to find the correct proportioulrr au1
shape for the knobs as because ot
tho bending of the more flexible