The L'Anse sentinel. (L'Anse, L.S., Mich.) 18??-current, 1897-01-16
UNIQUE RIDE.
A Trolley Journey Through the Sewers
OF Paris

a Trolley AhOeb. s@-~ s'~"~--
OF Paris.
The main sewers of Paris are period
ically cleared by means of scrapers car
ried ON boats or cars. These convey
ances are also used for conveying Wis
itors through the large sewers under
the Rue de Rivoli and the Boulevards
Sebastopol and De Malesherbes. These
EXPEDITIONS take place IA times year,
in spring and autumn, and about S,4Oo
visitors are admitted yearly. Until 1924
these cars and boats were drawn by
men, but the labor and expense were
found TO be so excessive that now the
traction is done entirely by electric
motors. taking current from accumu-
lator batteries on the boats or cars.
The Genie CIVIL" which describes and
illustrates the plant, says these man
sewers IRE in section very similar 10 an
ordinary tunnel; but in the floor IS
formed the rectangular channel for the
sewage, while round the roof are fixed
the water and compressed ar mains,
The telegraph and telephone wires. etc.
The sewer under the Boulevard dc
AIItSllfI us 10 tAAr1 At-A tsFNs - - ~ 49,
~, inches wide. 10 feet high froCn floor
TO roof: and the sewage channel in the
floor is 3 feet 5H inches deep and fee;
70 inches wide. Beats are used IN this
channel. The other sewers are smaller,
the channels in them being only 3 feet
II inches wide. and from feet II inches
to feet inches deep. In these cars
~. ~. 80 t,s, -
running on the edges Of the channel,
which are protected bv cngle-bars. ard
form the rails. THE approximate weight
of q train Of five cars with 100 passen-
Ce-s on board IS about tons - huns
dreiweirht, and this travels st the rate
o. IS. miles Per hour. The accumulation
battery consists Of oS elements AMI
weighs II hurdredweight, aad Its CO
pacity is leo ampere-hours. with mean
DISCHARGES Of 25 ampercs IT 30 or CD
volts The motor, which is series
wound. devel3ns two-horse POWER and
rims at l.Go' reyoiut:ogs per minute,
This speed icing reduced % so byCnears
OF pinioH ard wheel and chain-gea--
inC 20 thed-iying axle. the wheels being
Is. inches in diameter or the tread.
The beats are lowed IL means OF i
chain sgak in ihe sewage chanue,,
which is brought 10 the surfacc ant,
passes around : pulley driven ~ means
o. 8 double reduction gear from the
rs0-c-. The cha =. by means OF guido
T1l,eys. ;rallcs thr--0rert OK d turn
arpucl Ike driving pulley. this pulley
!, rs q magnetic one. plaCnctized bv
rle2.s Of two co.'s, one o. each sd, Z
c; il. on the axle.
Ecch passenger train consists OF six (
hats. IN the first q which 5 carried .
The accumu,a'or battery and 2 towing T.
apparatus; while in the last boat. winch 4
is smaller, there IS smother wig a. z
TcratuS The battery consists e. .
elements. civicc an output 81 On an (
-ares for a' hours. IT from q u l25 4
volts, il 5 divided igtotw parts, which |.
can be connected in series or Tay1llsl. I
= required. The lco.orS run II 80
revelations n-,- mirute; but this sTcci
j. reduced 10y means Of the gearing.
30 that the boats trave, ~ about ~
miles per hour The rover required I
for this IS from about two- horse power
70 g s-kuTse roweT, according IS the
boats an travelling with o. against the
cUrroat. The tot2. length II he sewers
,Ien in this way 70 the public is about
? niles. ard they are lich;ed partly
b. lamps on he fo2tpa'hs. Or by oil
lamps or the to2ts.-Pars Letter.