South Bend news-times. (South Bend, Ind.) 1913-1938, 1919-09-14


system are likewise liable TO all
ment.
Differences I'm Character.
Not all human beings are alike.
We have them white, black, red and
yellow. We sub-divide them into
nationalitles and we further sub
divide them into religious faiths or
according 20 their wealth or occu-
patton SO likewise with the internal
combustion motor The engine I
have described here may be per
fectly adapted for some particular
sort OF work and wholly untitled for
work OF a different character just as
a man may be adept at one task and
mighty poor at some other kind OF
work
Roughly, we divide motors into
two general classes. those which are
intended 20 perform their work at
constant speed, and those which are
intended 20 work at varying speeds.
Under each Of these classifcations
there are any number OF different
subdivisions according to the speci-
tic requirements involved For in
stance if you take tug boat en-
CINE, II is essentially a constant speed
motor, but its speed is comparative
ly slow. Contrast this with the air
plane motor which likewise is a con-
slant speed machine. but which
travels always at a high rate The
former we can construct large and
heavy in proportion 10 power de-
veloped, because neither room nor
weight are at q premium in the boat
hull. Take. on the other hand, the
airplane motor-it is applied TO a
mechanism where il is vital, not
only TO cut the weight to the last
possible ounce, but also TO cut the
wind resistance and consequently
the bulk. 1t goes without saying
that while both motors are designed
for constant speed there will be a
wide difference in their form and
their design. Naturally, then. we are
going to find motors with 1, 2, 3. 4.
., 8, Z, s, 3, 10 and II cylinders. In
extreme cases we even find them
with as many as is and "a cylinders
the cylinders being arranged in
many different ways. The more
usual arrangement for automobile
work is the vertical cylinder motor;
that is, with all the cylinders placed
in a line. one behind the OF er. But
the Wee" type with two cries Of
cylinders facing adjacent each other
on a single crank-case is coming
more and more, into favor In the
hrst instance, the number Of cylin-
ders is usually four with six run
ming a close second-the eight and
the twelve come under the Wee
classification"
EavOrite AiIpIane Type.
For airpfane work the wee" type
is far and always the favorite. we
have. however, something radically
different from anything used on the
automobile in the radical and rotary
types, in which the cylinders project
star fashion from a single crank
case-these are essentially aviation
motors. In the rotary type. the
cylinders themselves rotate, with
the crank-shaft stationary, while in
the radical type the cylinders are
held stationary and crank-shaft ro-
tates. In tractor work, in marine
work and in stationary work there
is practically no Standardization as
to type.
To go back again TO the ills I
spoke Of, with proper treatment as
Us the case with human beings.
many Of them can be averted or aft
.er they develop cured, provided the
symptoms are correctly interpreted.
and the case properly diagnosed.
Both in the matter of preventing
these ills and in the matter OF cor
recting them when they have de-
veloped, there is a crying need for
motor doctors-or in other words
motor mechanics-men who have
been trained might say intensely
trained-to operate the various
types Of motors properly and to rec
Ognize such symptoms Of trouble as
appear from time to time, and 10
offset or remove the cause OF the
trouble before il has gone so far as
to render repair work an expensive
proposition. You will find that the
call for men trained along these
lines Is going 10 be greater and
greater as more and more folks take
TO the automobile, the airplane and
the motorboat both for business and
recreation, and especially in the case
Of the farm tractor and stationary
engines Of the Diesel and Semi
Diesel types which actually develop
power that is cheaper than can be
obtained from any other source ex-
cept water. In the human body. life
itself and the correct performance
OF every bodily function depends
primarily upon the quality OF the
blood and the certainty Of its circu-
latiou TO other parts Of the body in
the proper quantity. Correct lubri-
cation is no less essential with the
internal combustion motor regard
less Of its application. Take for in
stance the blood CT man who leads
a sedentary life-that is, life OF
ease. It is going TO show up differ
ent than that OF a man who in
dulges In the hardest sort OF manual
labor. Likewise the motor oil
which Is ideally adapted TO one sort
Of motor is not going 70 give the
best possible service in another OF
totally different design and applica-
ton.
Five Ways OF Circulating OIL.
Just for instance: There are FIVE
difforo1r Wa We ~ ~fr-,rre+ gre- tbo al