Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1917-10-07
P|MPL|F|ED LESSONS ON
PROPER CARE OF AUTOS
- Purchasing Tire, 1t Is Best to
20 by Reputation or Expe-
riencc Of Others.
EYE ADMITTEDLY POOR GUIDE
'', most Without Exception. Doublo-
."pe rheumatic Type in Use To-
nay' Solid Tires Being Used Only
on Trucks and Heavy Cars.
-"hyrighL 1917. by Frederick c. 0uer.
lich.
Tires,

-ohyright' 1917. By Frederick c. ouer-
lich.1
Tires.
ne tires of pleasure automobiles Of
uay arc almost. without exception,
"ouoie tube" pneumatic type. The
Alhsle tube has been entirely aban-
'i"d' while The solid rubber tires are
used on trucks and slow ding
II" heavy electric pleasure cars
ne presei:t-day tire consists Of two
'em"cis. the tube. which Is alright
'u iHio which the air is pumped. and
casing, or shoe, which consists OF
|"o D"fts' namely. the fabric, which Is
'"c'Asiic ana is strong enough to pre-
e"' the tube from expanding under
ar pressure. and the trci,I Or rub
|cr portion. which serves twofold
|hrPoSe' IL gives a wearing surface.
20 70 some extent as Il cushion. and is
protection for the fabric.
me tube is simply an endless rub
tube. equipped with an automatic
|aiFe. through which the air can be
|i'hpcd. and which prevents its escape.
has no strength. and would stretch
pa even burst il air under a pressure
about One-tcnth that required for
complete tire were pumped into it.
Ne resistance to this pressure Is on
|re!y furnished by the fabric OF tho
|sing.
Figure OF the illustration shows
valve, which Is almost universally
FED Her" \ IL the body of the valve
ihc valve stem. Is including the
ring and parts .. l., II. r etc. il
He'd the valve inside The action Of
valve II As follows: The screw O.
pressing the rubber washer
= 1nr ~ 81
|em, VIII prevent the air leaking out
the side. while the nanEc II OF tho
I'VE plunEer by COMPRISING the small
bhcr washer I. viii prevent the air
HkinS out round the valve munger
lc hanse II Is held against the washer
the pressure Of the air in the tube
y not by the sprirE shown. the spring
ting more as a guide
When II is desired TO let air out OF
IL tire, The plungcr S is pressed in,
Hich VIII press the nange away
|"m its washer and so let the air es-
10 around the plunger When the tire
bclhg blown up. the pressure on top
the hanGc K will be greater than
at in the tube and so the Mango will
pressed down just as IT Is when the
|lngcr Is pressed down By hand. and
allow the air 10 enter around the
|'teer. The moment pumping is
|'lpcd pressure inside the tube will
greater ihan that outside, and the
nee vii! again be pressed agains;
g washer and so prevent the escape OF
II air.
slow leak" that is. when the tire
comes fiat overnight; or in two or
rec days, Is usually due to "a defect in
Va!re-ins!dc, the rubber washers
nS worn or torn. Replacing the
sa-.n
T. remedy. You can tell when the
we Is leaking by putting drop OF
t'er or saliva on the mouth of tho
we: IL i, leaks the saliva Will form
"ubb!cs. SCREENING the valvc-insido
li't!e harder will often remedy
trouble. but too much strength
-st not be used in doing this DO not
c pair OF olyers
Figure > is Il picture of the valve
p Note the rubber washer 4. some
mes us washer becomes reversed or
y OF position. and when the cap ia
rc"ed OF. TO the valve this washer
u press on the plunrer and so cause
t. tir" 10 leak Ii should be looked NJ
cry time the cap it put on.
Ia addition to a cover 10 l,oen nm,
|'i, anl 70 nelp nt preventing the es-
pc OF The air the valve-cap is n tool
removing and r"placing the valve
|sidcs. Note. the notchcs in the ton
ri or '.ie cap? If this thinner ton
IT is inserted into the valve, the
'ches vii! grip p,ongs of the screw
the valv, i'sidc ami so give means
unscrew IL
|f!gnre shows ross-section of a
pea! casing o. shoe A Is the fabric.
Is in the fabric that The strength OF
tITe Is ana any weakness N it will
suit In the tube Bursting through II
is Is what happens when the tire
lows out" is the rubber or tread"
tire, the function of which is to give
g tire long wearing and ground
|ipping surface. also TO give a certain
|1ount OF cushioning action and a nro-
elton for the fabric
As any defect in the fabric will
use blowout of the tire, care ~
res resolves itself into preventing
Y harm 10 1t. Thus the protecting
bier or tread must be kept free