Shoshone journal. [volume] (Shoshone, Idaho) 1884-1931, 1912-02-23

reduced until Il leaves the exhaust at 1 or 2
pounds gage pressure
The resistance 10 the passage of the steam OF
gas between adjoining plates is approximately
propcrtionate to the square of the relative speed
which is at maximum toward the center of the
disks and is equal to the tanegential velocity of
the steam. Hence the resistance to radiaI escape
is very great, being furthermore enhanced by
the centrifugal force acting outwardy One of
the most desirable elements In perfected tur
bine is that OF reversiblty and we are all ia
miliar with the many and frequently cumbersome
means which have been employed to secure this
end II will be seen that this turbine Is admir-
ably adapted for reversing since its effect can
be secured by merely closing the right hand valve
and opening that on the left
1t is evident that the principles OF this turbine
are equally applicable by slight notifications of
design. for its use a pump and we present
photograph OF demonstration model which is In
operation In MIR Teslas Office This little pump
driven by an electric motor OF liz H. delivers
40 gallons per minute against head of feet
The discharge pipe leads up to horizontal tube
provided with wire mesh for screening the wa
ter and checking the eddies The water fails
through slot liz the bottom of this tube and after
passing below battle plate flows in steady
stream about u inch thick IS inches In width
TO a trough from which it returns to the pump
Pumps OF this character show an efficiency favor.
ably comparing With that OF centrifugal pumps
and they have the advantage that great heads
are ohtainable economically in single stage
The runner Is mounted In a two-part voute casing
and except for the fact that the place OF the
buckets. vanes. etc. OF the ordinary centrifugal
pumps Is taken by set OF disks the construction
Is generally similar to that of pumps OF the stan
dard kind
in conclusion 1t should be noted that although
the experimental plant develops 200 HIP with
i25 pounds at the supply pipe and free exhaust
Il could show output of 800 HIP with the FUN
pressure of the supply circuit Furthermore Mr.
Tesla states that II Il were compounded and the
exhaust were led to low pressure unit carving
about three times the number of disks contained
In the high pressure element. with connection to
a condenser anordng rs y to 80 inches of vacuum
the results obtained In the present high-pressure
machine indicate that the compound unit would
give an output OF 500 HIP without great Increase
OF dimensions. This estimate is very conserya
tive
The testing plant consists of two Identical tur
bines. shown in the illustration. connected bv
carefully calibrated tension spring the machine
to the left being the driving element the other
the brake In the brake element the steam Is de-
itvered TO the blades In direction opposite TO
that Of the rotation OF the disks Fastened to the
shaft OF the brake turbine is hollow pulley pro
vded With two Numerically opposite narrow
slots and incandescent lamp placed inside
close to the rim As the pulley rotates two
flashes OF Hight pass out OF the same and nv
means OF rejecting mirrors and lenses they ara
carried around the plant and fall upon two rota..
lnx glass mirrors placed back to back on the