Ladysmith news-budget. [volume] (Ladysmith, Rusk County, Wis.) 1907-1927, 1915-08-06
THE KNIGHT MOTOR;
IT'S WONDERFUL MECHANISM
j. A. Taylor OF the Northwest WIS
consin Overland Co. interestingly
describes the Knight Motor, the
greatest Automobile Engine made.


the form of multiplying the cylinders
of the old type of motor, OF radlcai
price reductions, or a COMPUTATION
such as that covered by the Overland
announcement which offers two rad
zeal changes-One in motor design
the other il price The price OF
S1O95 is the lowest at which car
with Knight type motor has peen
offered to the public.
It's reliability, remarkable power
smoothness of operation and economy
have made it famous throughout the
world One of it's chief advantages
is it's characteristic of improving with
use. It is an established fact that
the Knight type Of motor gives even
greater satisfaction the second ana
succeeding years than the first. It's
simple design and small number OF
narts insures it against the various
evils that frequently come under the
head of motor troubles. Returning is
never necessary There is no guess
work. The entire action is positive
and never failing.
The important difference of the
Knight type motor is in the valve
arrangement The Knight type is a
sleeve valve motor. The valves are
merely sliding sleeves. There are
two-one inside the other sliding up
and down between the cylinder wall
and piston. In each, openings are
placed which, at the proper time IN
the action of the motor, come oppo-
site to each other so as to permit the
charge Of fresh gas from the car
buretOr to enter the combustion
chamber and similarly for the burnt
gases to pass from, the cylinder out
into the muffler.
Inasmuch as the power Of any
motor is largely determined by hay
ing the fresh gas in sufficient guam
tity enter the cylinders at exactly
the right moment and upon the com
plete expulsion of all burnt gases
also at exactly the right moment,
the poppet valve imposes certain linn
itations upon ali poppet valve mo-
tors.
Necessarily the diameter Of the
poppet valves is limited by diameter
of the. cylinders. Their accuracy as
to time of opening and closing, is
made uncertain because dependent
upon cams and springs.
The large sleeve valves of the
Knight type motor permit valve
openings much larger than can be
had with poppet valves. The sleeves
have a positive action, as they are
opened and closed by positively OPP
Grated connecting rods and there
fore, there is no uncertainty either
as to the time or extent Of the
opening. 1t must always be exactly
right and there will always be a full
opening regardless of the speed of
the motor
There has been a more or less
general idea among those only part
| ly familiar with the Knight cOnstruc-
ton, that the operation of the sleeve
valves might offer some difficulty
This is because it has not been
known that the sleeves do not have
to be made to a tight fit to hold
compression, as is true Of the pas
ton. The sleeves in operation are
always covered with a film Of Oil
Even more important to the sue
| cessful operation Of the knight type
motor than the fact that the sleeves
| are not called upon to retain com
| preston is the relatively slow move
ment of these sleeves. Whereas il
the Willys-knight motor the piston
has a stroke of Az inches, tht
| sleeve valve travels but one incl
at one-half the motor speed. In 9th
er words, the sleeve valves trave
| at only one-ninth of the piston
speed. This means that if your mo
tor is travelling at the rate of 90'
revolutions per minute, and Which
would be equivalent to a car speed
of 246 miles per hour, the sleeve
valves are only travelling at a rate
at which the pistons would trave
at a speed of 100 revolutions pc
minute.
Carbon deposit that forms SO rap
idly in the poppet valve motor AM
necessitates frequent cleaning, i
not noticeable in the sleeve valv,
type. The small amount that doe
form has a beneficial effect, servin:
to give surfaces a glass like finish
Thus the longer the motor is useC
the quieter and smoother it becomes
The remarkably low price is mad
possible only by the great manufac
turing facilities of the Overland
plant and the fact that the car viii
be produced in larger Quantitie