The spirit of democracy. [volume] (Woodsfield, Ohio) 1844-1994, 1878-11-05
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(S.iaB an1igl2sei abi mofl ,s.aYnRo
i1e dgid eat % - iissnlid fsvoiq ,bns
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their place abfossthe ccnanna. sviIen not
|in use. This dam, fthe Invention sof
Mr. s. Diescber, civil engineer, of this
city, 1isto be 1oated tos the shores, I and
and there ,aneh hofedo and sunk. b. 1t con,
sists chieays of Two shollox wings made
OF oak, each being in length equal to one.
half the width Of the river. The bottom
Of the dam II level, oand the sides are
sloped, ,shs' wli6 eSesembfing Cin form an
earths ZEN bank k]aalt of 3 irailroad. !, Tbe
lendssnext lhe shqfe hq2f tpFn an ,piyotas, go
that the wings may swing open down
stream when the dam Is 10 be but Out "
use.s sipeaif ssHa .hssaols s1a eo,t,
=, Afanndstion door, resting on .pj)es,i is
Ito be constructed, OF asyw,dth somewhat
greater than That Of the dam Two rows
OF sheet piles Rill be driven ID across the
friver iInul above this fodndatiop,
to prevent the water from passing nniler-
meath the sAoors iAt the downstream
ledge ofihe foundation will be a rev of
lpiles, about ten feet apart, projecting
about ten inches above the A sor, and CAP
ped with iron rings These are toiiseep
the dam in its place and to sustain it
| againsttbe pushing force Of the acatredt
A Asmalh cabin is set on top of the. wing
OF eaed damakitspiyot end This cabin
contains an upright boiler, hosting en-,
gne and a pump. A wire rope, working :
On a drum, passes from the cabin out ID
lthe end Of the winey thence down ward
and aruuhd hinged sheaye near the
bottom, though. the. up river. siding
Iplanks, and is attached .o.a wrought iron
IpiIe secured in the river bed. BY means
of this rope tHus attached the wings are
to be drawn into position. The sheava
lis fitted in ssueh "a lmaansrs shat ,it will
always assume a position connecting with
THAT Of the projecting rope lying ID the
river. ~ sAE 3H@Hps 2et'a on foi
I Theaoperaeion oteths dam is as fol.
1lows: The wings OF the dam being open,
flayiagl aleng the shores, and lheI water
Having been pumped out Of them, caus-
ling them to float as boats, tue engines
Tin the cabins are set In motion, and as
1.-THE wire rope winds up on its dfansr ythe
iouter end of -wingsis drawn out from
THE shore and up stream until It reaches
hts proper p p3sition in line across the riy.
er. After both wings are thus brought
into position, water is admitted into them
Eby means of 'wicketssoperated by tbeeh
Igine--the dam loses its lbqoyancy, and
lisinks close by and along the line Of the
projecting piles, and by them is, helJ
tagainst the force of the current. Ak the
Same time, the air confined in the dam
lis allowed TO- escape throughevalvesSpn
ttop. After the dam is in place. the wa,
Eter'in the pool above sitIwill begin to
ter, and simultaneously withbit the stwa
te rim tue inside of the dam The wings
before being brought intospiace are bal
lasted with pig iron or cement to an ex,
tent that their material, including bal
last, when submerged will weigh nnors
than the volume OF water displaced Il by
them. Hence, whatever the height ~
I the water outside Of the dam may be, i
can never dlsplaue the dam. '' 's-'
I When there Is sufficient stage OF wa
ter in the river for MISREPRESENTATION
! se,of the dam. and it is to bsi rs
1 moved from its position, .scross tn,
stream, the first step Is to pump at
4 into the wings by means Of The engines
4 and air pumps. The air will force th,
4 water out Of the inside of the nwings
through the wicketsl by means ofiwhich
I entered. When this operation islcon
\ tinued for q short time, the dam will be
: come buoyant and rise. When the bot
tom rises above the pile heads, the cur
rent will swing the wings towards thei
respective shores. where they will be nan
chored and aunk inprder to keep, then
tight until they are required for seryiG'
! again, when the water. will be pumped
out OF them, and the whole process des
cribed above will repeated papos
Y The advantages claims rIthis plan by
its inventor are. qCheapera.durabiify
total absence of reeessesf in which ssdi
J ment may, accumulate, easy access to al
parts Tor repairs quick action, manage
ment of the dam altogefher 0 from qth'
shore, and small force required for opera
ting it--twoI menionly being required.
In one impoTtaDtlfeature, MEs piesch
ern plan differs. from all others which bav
been proposed, All the other dams ar.