The morning news. [volume] (Savannah, Ga.) 1887-1900, 1894-09-09

prevented by the shaft that accompanies
it from the base Of the little platform at
the top. The curve on the shallow screw
has Just the contrary effect, and holds the
marble so closely that it almost rests on
the core of the screw.
With this explanation the proposition
ought to be very simple TO a mechanic.
The two balls in the deep screw descend
by gravitation, their weight being suffi-
cieut to turn the screw. They make
three and half revolutions Of the screw,
and near the base of the screws shaft is
a half inch pinion wheel that tits in the
cogs of the large fat wheel on the rollers
on the floor of the foundation. On the
shaft of the shallow wheel is a smaller
pinion, and through it the COgs of the
wheel turn that shaft in the reverse di-
rection. Consequently the single bali in
the shallow propeller is rolled to the sum
nit by the descending weight Of the two
balls in the screw.
AS the single ball has but three turns to
make 10 reach the apex of the triangle,
as against three and a half for the de-
scending pair, it acComplishes its journey
a shade the quicker, and rolling out the
end of its screw into the top of the deep
screw, it in turn becomes one of the de-
scending spheres, while the leader of the
pair that carried it up becomes the as
cending one. The difference in speed is
hardly sufficient TO bridge the wide gap
at the base Of the screws, and this is
the point that caused the inventor
his greatest perpleXity. He has con-
quered it by setting a small straight
spring in the deep screws shaft az the
point where it discharges the descended
ball into the connecting trough. AS long
as the ball rests its weight on the paral-
lei shaft and half on the flange of the
screw the shaft prevents the spring from
throwing the ball. With the end of the
parallel shaft comes the end of the thread
of the screwl and the spring gives the
ball a flip that sends it rapidly across into
the thread of the ascending shallow
screw.
Just as this propulsion is given the as
cending ball rolls from the top Of the
screw. and lends its weight to its brother
half way down the screw in the work Of
carving up the third one. In short,
there are always two balls gliding down
the deep screw. OF course, there is a
break in this order when the lowest ball
is in the trough and the highest is turn
ing from ascent TO descent, but 1t Is for
such a small fraction of a second that it
is scarcely appreciable to the eye, and
not at all in the steadiness of tho ma
chimes motion. In fact, testing the ma
chimes velocity as accurately as possible
shows no difference, for the transit of one
ball from ascent TO descent is so gagged
as TO be in perfect unison with the travel
ing OF the second ball across the base Of
the screws, while the third ball in the
deep screw, relieved of the hosting work,
keeps the main wheel going at the same
speed that the two do when hosting one
Of the spheres
With two balls in the shafts the excess
of gravity in the deep screw is sufficient
10 turn the machine, but not 70 create
power Whatever power is produced
comes from the third ball, and that ii is
considerable is evidenced by the fact that
a copper fan set up as a balance wheel
makes 800 revolutions a minute when
tae motor is running moderate speed.