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Page 8
Remember, however, that the men who have accomplished most in this
world worked the longest hours, and any one with a regular occupation
must utilize his leisure hours to obtain prestige. The difference
between one man and another of the same natural ability lies entirely
in the amount of his information and the facility with which he can
use it. Life is short, and you must realize that now is your
opportunity. If any diversion in the way of pleasure or even certain
kinds of congenial work is offered, consider it in connection with the
question, "Will this be conducive to my higher aim?" This implies that
you have a higher aim; and if you have it, and weigh everything in
this way, you will find that every moment of exertion adds something
to your storehouse of information and brings you nearer to the
accomplishment of that higher aim.
In closing, we thank the ladies and gentlemen present for their close
attention to details of special interest only to those engaged in
technical study or practice.
We congratulate you, young gentlemen of the class of '87, for the
success you have thus far obtained, and trust that you will persevere
in well doing and win greater success in the future. We need hardly
state that all that has been said was in a spirit of kindness, and we
feel assured that much of it has been seconded by your parents, to
whom no less than to all parents here present off or on the stage, the
speaker not excepted, a serious, thoughtful problem has been, still
is, and will continue to be to many, "What shall we do with our
boys."--_Stevens Indicator._
* * * * *
HEATING MARINE BOILERS WITH LIQUID FUEL.
We were recently witness of an experiment made at Eragny Conflans on
the steam yacht Flamboyante. It was a question of testing a new
vaporizer or burner for liquid fuel. The experiment was a repetition
of the one that the inventor, Mr. G. Dietrich, recently performed with
success in the presence of Admirals Cloue and Miot.
The Flamboyante is 58 ft. in length, 9 ft. in width, draws 5 ft. of
water, and has a displacement of 10 tons. She is provided with a
double vertical engine supplied by a Belleville boiler that develops
28 horse power. The screw makes 200 revolutions per minute, and gives
the yacht a speed of 6� knots.
Mr. Dietrich's vaporizer appears to be very simple, and has given so
good results that we have thought it of interest to give our readers a
succinct description of it. In this apparatus, the inventor has
endeavored to obtain an easy regulation of the two essential
elements--naphtha and steam.
Fig. 1 represents the apparatus in section. The steam enters through
the tubulure, A, and finds its way around the periphery of a tuyere,
D. It escapes with great velocity, carries along the petroleum that
runs from two lateral tubulures, B (Fig. 2), and throws it in a fine
spray into the fireplace, through the nozzle, C (Fig. 1), which is
flattened into the shape of a fan opened out horizontally. The mixture
at once ignites in contact with the hot gases, and gives a beautiful,
long, clear flame. The air necessary for the combustion is sucked
through the interior of the nozzle, H, which is in front of the
tuyere. It will be seen that the current of steam can be regulated by
moving the tuyere, D, from or toward the eduction orifice. This is
effected through a maneuver of the hand wheel, F. In the second place,
the flow of the petroleum is made regular by revolving the hand wheel,
G, which gives the piston, O, a to and fro motion in the tuyere, D.
[Illustration: FIG. 1--THE DIETRICH PETROLEUM BURNER.]
The regulation may be performed with the greatest ease. It is possible
to instantly vary, together or separately, the steam and the
petroleum. Under such circumstances, choking is not to be feared at
the petroleum orifice, where, according to experiment, the thickness
of the substance to be vaporized should not be less than 0.04 of an
inch.
The petroleum might evidently be made to enter at A and the steam at
B; but one of the conclusions of the experiments cited is that the
performance is better when the jet of steam surrounds the petroleum.
It will be understood, in fact, that by this means not a particle of
the liquid can escape vaporization and, consequently, combustion.
Moreover, as the jet of petroleum is completely surrounded by steam
its flow can be increased within the widest limits, and this, in
certain cases, may prevent an obstruction without much diminishing the
useful effect of the burner.
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