Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1918-04-28

iect YOU are clutchIng Is heavy. YOU
have TO exert most Of your strength
to press the fingers against lt and
why, II the pressure he not great
enough It will slip from your hand ?
That which makes the object stay
IN your hand IL the friction between
tho hand and the object The
LeaEan you must exert more strength
5ifting a lighter one. Is that "A
greAter amount OF friction is re
CURED. and the amount or force Of
the friction h"u-n l-nt upon y 2
pressure between the surfaces. Tnis
IS also tho reason why the object
will slip from your hand II the pres
FIre be not great enough
The action OF the ciutcn os tho
automobile depends upon the force
OF friction In the case OF the hand.
the pressure is eNerted by the mus
cles in the arm. while Ia the clutch
the pressure comes from spring
when you wish your hand to let go
Of an object you viii let the muscles
relax their pressure. while in the
case Of the clutch ot the car the
spring is made to relax It's pressure
by being pulled back by means OF
the foot pushing down on the clutch
prdal.
The use OF tho clutch when start
ing might be compared to man
in the bow Of n small boat hOlding
rope by which his boat Ia To he
lowed by another, Inorder TO pre-
vent jerky start. and possible
mapping OF the rope, he will first
hold the rope in his hand. letting IL
clip through so that his boat slowly
starts. and as the boat gets a little
headway will increase the pressure
Of his Hands on the rope. so gradu-
ally increasing his hold until when
all OF the tow line Is out, his own
boat will have almost the speed OF
ethe towing boat. when there will
be a positive grip
when starting the car the spring
NJ the clutch. by means OF the foot
pedal. Is allowed TO exert little
pressure on the clutch so that there
Is IA little grip. the pressure being
gradually Increased until the car
has obtained fun headway. when
the clutch is allowed TO grip with
is fun strength.
a There are number OF types ~
clutches I'm use, though most OF them
- OF the cone. disc and lately
HiaAt ~ 10
J The illustration shows the eep,.
clutch. In FiEure /. "Br il the
clutch, with It's leather facing shovyn
IN black & Is the spring which
causes the pressure between the
leather and the inside OF the engine
Nywheel. In Figure ?. the mechan.
ism by which the pressure OF the
spring Is regulated by means of the
foot pedal "I' is shown. added 10
the parts shown In Figure ! You
will observe that II the medal IL
pressed down. the collar " the
housing &c will be pushed In the
right the pedal operating through
the yoke r. and thrust bearing
-" As the housing ~" is pushed
back In this way. the clutch will bc
pulled out Of the nywheel against
the action OF the spring. which Wni
be compressed. Thus the clutch viii
be released.
Obviously bv pressing or holding
down on the pedal the press,re ~
the spring, and go OF clutch against
the flywhecl. can be ynriod a, ,hc
viii OF the operator
what troubles are clutches sub
jected to- SF
These may be classed as gripping.
slipping dragging and spinning
Ihe gripping clutch is due TO too
tsht spring. 20 too hard leather.
n when case the natural oil Of the
leather has worked out. leaving IL
dead, II the gripping is found on a
new car or one which has lust had
some work done to it. the too tiSbt
spring Is likely To be the cause m
however, the gripping develops
gradually on an old car. then the
xfather must sbe looked TO.
&ha remedy in the latter case IL
No treat the Leather with some
nestsfoot oil n you do not wish
90 take the clutch out OF the car.