The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1896-03-01
STARTLING REVELATIONS,
Continued from Page u

third the total cost of current delivered
on the street. the electrical Engineer
will hardly be coura geous enough to
repeat his question.
It may be well to state that the fore
going figures on power cost Tor Sprague
electric elevators, cannot be assumed
as applying to any other electric eIe-
vator.
Fourth-The electrical Engineer"
also has no hesitancy in stating that
1.-THE saving claimed of $3.50 per year
in favor of electric elevators is worse
than baseless" Perhaps so according
to his authoritative cranial vacuum.
but Mr.. 3. J. Arnold, of Chicago, con-
sulting. engineer of the Worlds Fair
and consulting engineer for the Chica-
go board of trade, has undertaken
with his clients to effect a reduction Of
nearly 81, 900 per year in the operation
of the steam and electric plants of the
Chicago Board of Trade building. and
the largest item in that saving is eff
fected by throwing out four Crane hy-
draulic elevators. and substituting four
Sprague electric screw elevators.
And on this same point. We may eX-
anime an extract from the Minneapolis
Tribune of March H. 1895, to the effect
that the court house and city hall COM
mission of Minneapolis, through a,
member, requested oE Mr.. William De
la Barre, a noted hydraulic engineer,
and chief engineer of the Minneapolis
Milling company, an answer to the
question: Glow much more could the
county afford to pay for six electric
elevators than for six Crane elevators,
computations being based on the claims
of the Crane schedule, both types doing
equal duty. coal at 81 per ton. interest
on cost at AZ per cent?" Mr.. De la
Barre replied: THE answer to your
question is $14,454.66 for each elevator
or sos, 722 90 for six elevators, assum-
ing each to work under identical con-
ditions'
Fifth-The article referred to states
that the county will be dependent upon
either Of the electric companies for the
operation of its elevators. Since there
are now in this city four central sta
tons, and a large water power compa-
ny about to begin operations it would
appear that the county must be rather
hard to please if it cannot secure cur
rent from any one OF the five compa-
MES.
Sixth-Referring to the losses in pro
ducing and transmitting electricity
the electrical Engineer" presents
some startling conclusions as to the
vast waste of the power in the electric
as compared with the hydraulic sys-
TENS The indisputable and unques-
toned fact is, that electric energy is
today in every part of the world, deliv-
cred to customers upon an evaporation
Of less than forty pounds Of water per
horse power per hour, while the steam
pumps universally used on hydraulic
elevators do not accomplish the same
result upon less that seventy pounds
of water eVaDOrated
Finally the electrical Engineer"
concludes that electric power can be
combined with the hydraulic system
more efficiently than by use in a di-
rect electric elevator.
Tests recently made in this city
upon such combination plant, show
that the cost of current used In that
manner amounted to nearly six times
the cost at which a local company has
proposed to supply the Sprague eleva-
tor in the county building.
During the past year the Sprasue
Electric Elevator company was award
ed contracts for more than 260 cleo
trio elevators, in each of these cases
defeating the hydraulic trust compa-
MES, and generally in spite of lower
bids on the part of these companies.
Respectfully,
c. r. M'KAY.