The daily morning journal and courier. [volume] (New Haven, Conn.) 1894-1907, 1907-07-06
AIR NAVIGATION
NEAR AT HAND
A New York Inventor Who
Claims the Dis
coyery.
CONFIDENT OF SUCCESS.
Calls His New Machine by
the Name Aeronauto-
mobile.
CONFIDENT OF SUCCESS.

11lUUllEs
New York, July 4-Within 60 days I'll
land at the front door Of the Herald
office with my airship Then I will go
straight up In the air 1000 feet and
come down on the spot from which 1
started. After that will sail up Broad
way alongside automobiles and street
cars three feet above the pavement.
When I have done that I will go in
my aeronautomobile to President
Roosevelts house on Sycamore Hill, at
Oyster Bay, and tell him / am ready
to build a machine that will cross the
ocean,"
This was the announcement made Ivy
Fritz H. Grawert, a German inventor,
as he stood watching the antics Of ais
aeronautomobile about a large room at
160th street and Forest avenue, the
Bronx.
"Airship talk is cheap" he continued;
"tae cheapest kind of talk 1 know
any thing about, but I am telling you
what I am going to do, not what in
theory I think might do. You see for
yourself. This model sails around here
under perfect control. That shows you
what a larger machine can do. 1t is
thu only model with propeller that has
ever proved itself-the only one that
has ever actually worked"
If Fritz Grawert has not solved the
problem of aerial navigation he will be
one of the most grievously disappointed
geniuses that ever wasted time and
materials in the effort.
Every time he winds up the spring
In his model and sets it circling about
the room his conviction that he is the
conqueror becomes more firmly estab-
iishel in his own mind.
He has evolved many inventions of
one kind and another during his life
time, but his aeronautomobile is the
result of fifteen years of hard work
and many discouragements. Now he
declares nothing remains for him but
to put the machine together and sail
away with the freedom and safety of
a bird.
Many Gas Bags Used.
His airship. he says, is to combine
tho automobile, the dirigible balloon
and the aeroplant all in one.
Instead Of one large gas bag it will
have four six, ten, twelve or any num-
Der required, according to the weight
of the motor and passengers to be car
ried, and the gas compartments will
be SO placed as to provide perfect
-ee4 tlla iitripnl with the least possible re-
sistance to the atmosphere.
In the model, four gas bags are
shown. Two are placed side by side,
with one forward and one in the rear.
The motor is placed In the center be-
tween the two bags, and the forward
and rear bags rest in movable frames
so that the airship may be sent up
ward, downward, to the right or left
merely by moving the forward and rear
parts of the machine. The propeller is
attached to the rear frame.
Grawert's laboratory occupies large
store at Forest avenue and 160th street,
and there behind closely curtained Win
dows he and several workmen are busy
night and day.
Suspended by a cord from the ceiling,
the model swings about eight inches
from the floor.
Grawert winds up the spring, which
takes the place of motor, and then
by manipulation of the adjustable for
ward and rear parts makes 1t perform
cord. If the machine is set In rigid
form then as the spring starts the pro-
peller the miniature airship sails around
in perfect circle, Juggling at the cord
and moving at a sharp pace until the
clockwork runs down.
When the forward or rear sections
are turned from straight line then
1.-THE machine twists about in a narrow
er circle, and by turning the forward
part down or up it performs imperfect
ly the spiral notion which the inven-
tor says will enable him, with the per-
fected machine, to rise or descend with
a screwlike movement so that he may
come down wherever he desires.
Going to Cross Ocean.
In building his first machine he says
he will use seven-horsepower motor
and that the four gas bags will carry
about as much gas as is usually con-
tanned in one of the dirigible balloons
of the Santos-Dumont type.
These bags will be pointed at the
ends, and, he states, will offer less re-
sistance than one large bag
When he has demonstrated with his
machine that his principle is correct
Grawert says he will at once begin the
construction of a large aeronautomobile,
dn which he will take party Of scien-
lists across the ocean and will sail d.
rectly to the palace of the German EN-
peror,
For the transatlantic machine he
proposes having ten or twelve large
gas bags and powerful motor, and
when the wind is favorable he will
hoist sails from the central part of the
structure and save extra strain on the
motor. The ocean going machine will
be about 400 feet in length, with 400
horsepower, and he predicts that he will
go from New York city to Berlin In
three days.
Before making the trip over seas, he
contemplates sail overland to San
Francisco and return.
Grawert has another invention which
he calls an airship school. He has a