The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1889-07-21


the other will be compelled to cease opera
tons. Everywhere 1 go l hear of trouble
with the telephone companies. At first it
was laid TO induction and later to a loss of
current. This was recinded by Mr.. Nc
Clure, whom am acquainted with, byputting
in a return ground for the telephone lines.
l think it impossible to have induction
where the wires are ten or even more feet
apart. If the telephone company and car
line both grounded on the water pipes,
there might be a chance of interference,
but if they used the water pipes and we
grounded in a well or by plates. there
would be no chance for interference. In
every case where there have been Difficult
ties we have remedied them, that is, we as
sisted the telephone company to make these
changes, in every case it has been without
expense to US. The only damage l know
of would be in case the telephone wires
dropped on our wire, the former would be
burned in two. l know of case of this
kind occurring in Richmond, when storm
blew down the wires. The cleo
tricity might go to the switch board in
the central Office, but would cause no
nre Empty cars can be taken over the
track in this city at the rate of twenty
miles an hour and loaded cars will travel
twelve miles per hour. ] have observed
the relative position of the two systems of
wires and l think there is no danger in
handling the wire, which should be done
with rubber gloves and insulated plyers
and connectorS. In order to get shock,
it is necessary to have connection with the
trolley wire and the ground. In order to
throw an annunciator drop in the tele
phone central Office, it is necessary that the
two wires are in actual contact. l have
made no experiments in ind lction, but
think there would be much more induction
from telegraph wires than ours, because
the telegraph has a perpetual variation of
the current, while the current from the
street car system is as nearly regular as
possible, the nearer perfect the flow is the
less induction is experienced.
To MIR. Williams-I think Mr.. Brown
was somewhat mixed in his testimony yes
terday. Metal is a better conductor than
the earth but do not know what became
of the current that went into the rail when
| tested it with Salvanometer; can't cay
whether it left the rail and went into the
earth or not.
r. N. JONES.
/ got my first experience in electricity at
the electric light works at Laramie, and
later at Evanston. have the contract to
put in the car line here, and between the
4th and 10th of June l visited Omaha and
St. Joseph TO inspect the street car sys-
tens. At the latter place there are four
Sprague car lines. the first having been put
in about year ago and the fourth has not
yet been completed. l made an expert
ment in Laramie to test induction and
found that although I had put a copper
telephone wire on the same
pole and right among the electric
light wires, there was not the
slightest difficulty experienced; in fact,
never saw a telephone work better. In
New York conduits of various electrical
systems are often placed in one ditch, not
over twenty inches wide, and the wires in
any one system are not over One-quarter of
an inch apart and no difficulty is ex-
perienced from induction, which cannot
take place, L should say, outside of ten
inches.
To Mr.. Williams-Yes, am acquainted
with the system of telegraphing from run
ming trains. OF course, induction takes
place at greater distance, but that is
purely an induction system. Currents gen
Grated by certain dynamos are steady, but
the consumption is not regular; hence the
unevenness. In the electric light system
at Laramie know of the wire being burned
off, but it never affected the central Office.
In the New York cOnduits there is always
d return wire to complete the circuit.
Court then adjourned to Monday morn
ing at 10 o'clock, when the defense will con
Gnue.