Steam-ships : $b The story of their development to the present day — John Shaqi
Steam-ships : $b The story of their development to the present dayFletcher, R. A.
History
Steam-ships : $b The story of their development to the present day
Fletcher, R. A.
Shipbuilding; Steamboats
“In 1811,” he says, “I had command of the steamboat _Hope_ plying
between New York and Albany. The engine and boilers were made and put
in by Robert McQueen. On the second trip from New York, while Mr.
McQueen’s foreman had still charge of the works on board (they not
having been delivered as completed), this man had a gang of his own men
from the shop, and, while proving the machinery, had a man that he was
instructing to become engineer of the boat. While on the passage, off
Esopus meadows, something appeared to be wrong in the fire-room (which
was in charge of a miserable drunken fireman) and the engine moving
very slowly. I found on examination, that there was not a drop of water
in either of the boilers, and that both of them were red-hot, as well
as the flues, and must have been so for at least half an hour. The heat
was great enough to melt down five solder-joints of steam-pipe, which
was made of copper. I immediately started the forcing pump myself, not
thinking that there could be any danger in the operation; the effect of
which was a crackling in the boiler as the water met the hot iron, the
sound of which was like that often heard in a blacksmith’s shop when
water is thrown upon a piece of hot iron. I cannot, therefore, believe
for a single moment that explosions are produced, to such a degree as
I have before recited, by throwing cold water into a red-hot boiler.
In the way above described, I cooled down both of the boilers, during
which time neither of them jumped out of its place; nor do I see how it
could be possible for such an effect to be produced, having always been
of opinion that there could be no other cause for a boiler to burst
than the pressure of steam inside, and not gas produced by letting
cold water or lukewarm water into it; for I deem it impossible for a
red-hot boiler to contain heat enough to explode with any quantity
of water that might be suddenly thrown into it. Besides, it must be
remembered that the supply-pipes are connected with the bottom of all
steam-boilers, or are very near to the bottom; therefore, instead of
producing explosion, the forcing of cold or lukewarm water into hot
water must have the tendency to cool it. For instance, I have known
engineers to keep off their feed as long as they possibly dared, when
running with another boat, knowing that as soon as they began to feed,
the steam would fall, especially if they could not get a full supply of
steam for the engine.”[22]
[22] The “Master, Mate, and Pilot,” Vol. II. No. 5.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account