Los Angeles herald., 1909-08-01

bulk of the oil is retained in the pis-
tons themselves, making it practically
impossible to flood the cylinders BY
this method which might be termed
natural the oil consumption is reduced
to a minimum
Cost Is Reduced
On account of it's extreme simplicity
and fewness of pants ii is self-eVident
that the cost of construction is ma
terially reduced as compared to the
ordinary engine of equal power. In
consideration of the reduced weight
and number of parts with their subse-
quent bearings and wearing surfaces,
| and the absence of reciprocating evils,
all of which consume power, the no
! tary, with its five cylinders, can justly
| be compared with a siX-cylinder of the
old style of same bore and stroke. A
few illustrations of the decreased cost
are, namely:
The crank shaft. Instead of a six
throw crank which is one of the most
expensive parts in the ordinary engine
the Rotary has but one single, simple
throw crank. In place of a long, cum
bersonle engine case, with It's multiple
bearings, brasses, caps, etc, the Ro-
tary is provided with an extremely
simple and compact case, which Is
easily and cheaply machined. In the
Rotary one simple cam actuates each
set of valves as compared with six in the
other style, and the customary cam
shaft, with its bearings and gearings,
is entirely eliminated
The Rotary needs no fly wheel, which
not only saves the cost of the heavy
casting, but the machine work and
keying and fitting to the shaft, which
is also true of the cooling fan and
gearing, the water pump and means
of operating same. All water tanks,
piping, radiators, etc, are entirely
eliminated, as are any complex lubrl-
Gators, which not only have consid-
erabe initial cost. but constitute so
many more parts to oil and keep IN
repair.
The cost of repair is also greatly re-
duced, as there are so few parts to
wear. break or become damaged. Re-
garding the actual cost of manufacture
for a given power there are so many
factors which enter into the construc-
ton of any engine that 1t is impossi-
BILE at this time to give more than
comparative estimate. The principle
factors referred to are the quantity
made at a time and the equipment,
special tools, jigs, fixtures, etc. for the
economical manufacture of each indi-
vidual part.
After careful comparison as enumer-
ated above, ii seems conservative TO
estimate that the cost of the Rotary
would be only from one-third to one
half as much as a motor of the old
style, cylinder sizes being equal
Is of Light Weight
In the Rotary, on account of it's ex-
tremely simple construction and ao-
sence of all water cooling apparatus,
the weight is reduced to minimum.
For basis of comparison take 2Z-24
horse power automobile motor or the
ordinary type, the average engine OF
which will weigh from 800 to $50 pounds,
and II is very conservative to say that
the weight of a full water tank, radia-
tor, water pump. piping, cooling fan,
etc will make a gross weight OF at
least 600 pounds
AS compared to this the 24-horse
power Rotary will weigh but approx
mately 200 pounds, which not only re-
duces the dead weight to one-third,
hut owing to the almost entire absence
of vibration effects vital saving on
the whole machine, and especially i'm
the life of pneumatic tires, it being
we'll known that heavy cars are de-
structive to tire life.
The quick and easy method OF getting
at all parts of the Rotary for inspection
and adjustment is one of the features
that is readily appreciated; 1t being
the part requiring attention is upper
most. The small space occupied by an
engine of this type allows the trans
mission to also be placed under the
hood. which no longer necessitates
crawling under the car for any pur-
pose of repair.
The many uses to which the Rotary
is adapted are so exhaustive that only
the most prominent may be cited,
among which are the following:
Has Many Uses
In automobiles of all types the Ro-
tary displays some of it's most import
ant advantages, not only on account
of its light weight, easy running and
almost entire absence of vibration, but
of its perfect control especially when
slow procedure is required. it being