The Providence news. (Providence [R.I.]) 1891-1906, 1901-12-26
ELECTRICAL NOTES.

Fhe tramways Of Paris and its suburbs
| are In the hands Of II companies. work.
ing 55 lines, with S32 cars for mechanical
ana Zs' Tor horsepower. The following
| systems are used; ts}- For electric trac-
,lop-troliey, one line; plaw five lines:
system Diatto, Il lines; system Claret et
Nuilleumier, one line: accumuIst tor 10
INES, lbl Compressed air nine lines (cl
steam, hye lines. td) Rope. one line
Inc trolley system IL allowed within the
city and has only been granted provi-
sionally to one line, Rastille- Charenton.
III mas been necessary 10 tear out an
expensive marble switchboard which was
putt In the electrical power house at
iule hour, Mr.. w. X. Nanderbilt's es-
tate in oakdale J.. l. Ever since the
marble board was put I'm the current has
Deen errauc. says The Electrical Review.
~ was finally determined that the
trouble must be in the switchboard
careful investigation revealed the fact
mat the marble contained vein OF iron
sufficiently well developed to form an oo-
casional short-circuit. A new switchboard
Is to be constructed and the old one torn
out.
The Electrician states that proposal
has been submitted 10 the municipal au-
thorities at Rouen, by the chief OF the
hre department, for the utilization of the
tramway trolley wires In connection with
the extinguishing OF fires. All the prin-
clpal thoroughfares OF the town are pro-
vided with electric tramways and the
proposal is that pumps capable OF being
electrically driven should be installed I'm
number of suitable positions on the
tramway route, TO be switched on 10 the
trolley wires so that the pumps NAV he
used as occasion necessitates The pro-
posal is said to have been favorably re-
ceived, and is now under the considera-
ton OF the authorities
Ihe enormous strides that have attend
ed the development OF telegraphv during
the 18th century are strikingly Illustrated
by some statistics recently issued by Sir
W. H. freece, n. G. b.. late electrician
10 the English postoffiee. In 1870 the num-
Der or words transmitted per minute were
only 80 I'm 1890 the number had been
increased TO $50 In 1870. $3.50 III messages
were dispatched throughout the United
Kingdom, at cost of 81, ,06l sos. while i'm
1900, @,576.69l telegrams were sent bring |
ing IN revenue of 1925 765. The total
number OF government and private ca |
bles encircling the globe is at present 1924 |
covering total length of 1S1.353,172 nauti- |
cal miles
IL has now been practically settled that |
Colorado ard
lnstal electricity as motive power on |
All lts suburban lines running out of Dem
yer, During the summer an expert was |
sent to Europe to investigat the various |
electric systems in use I'm Berlin and |
other cities. and to report on the advisa- /
blity or adopting any OF them. This ex-
pert has recently returned. and reports |
that the change TO electricity Is entirely |
feasible and viii not involve a cost which
This recently reorganiZed system would
not be able 10 sustain. IL is expected |
that the recommendations which he will
submit vii be acted upon definitely with
III very short time. The suburban lines !
on which this change f. To- be made are
i've In number. entering Denver from
different directions The road also CON
templates changing its locomotive fuel
from coal to oil
lt IN Intended to utilize electricity IN
lieu of steam for subsidiary Purposes
upon the vessels OF - English navy
more extensively than at present A
series or prolonged experiments are to
be made 10 ascertain the range OF the
practcability OF using this power for
mis- purpose. At present the capstan
steering engines. ventilating fans and
derrick hoists on the vessels are manipu-
lated by steam, neccssitating the con-
struction OF "a bewildering network of |
pipes in the interior OF the shin. The |
new armored cruiser. Hogue. is being ~.
led with electric wires. and the entire
subsidiary gear will he controlled by elec-
.ricity. Should the experiment prove sue |
'essful. the system will be expended TO
All other vessels rehttlng. as well as those
under construction. modern English |
oattieshp now carries small star of /
Electrical engineers. 50 that no alera-
ions will have 20 he made respecting the
rev.