The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1850-06-21


water, as formerly the case. The steam from all
water is OF course fresh, and being reduced TO tho
solid form again, should give back quantity Of
water equal to that of which il was originally COM
posed Some OF the steam generated will have
been lost by leaks at the stuifing boxes, gauges
&c., and on this vessel, that loss is made up by a
very ingeniousiy arranged evaporation, which is
constantly in operation when the engine is in mo-
ton, and may also be used at any other time If ne
cessay. The condensed water from both these
sources is delivered into reservoir, ready TO
be pumped into the boilers by the ordinary feed
pump:
"These are precisely the results intended 70 I'VE
been accomplished by the use of Halls English in.
vention, which performed to entire satisfaction but
which, from radical defects in the princi lie of its
construction, IL was found could not be kept in or
der; the vacuum would be impaired on the slight
est defect, and consequently the efficiency or the
engine would be destroyed In tho Osprey, il was
evident TO any engineer that 4 the apparatus should
fail at all, il only be in the production Of fresh
water since the vacuum must still be perfect as
ip the usual method Of working the boilers would
then have to be supplied with salt water instead Of
fresh, but this would not involve the necessity of
stopping the engine even for moment.
The Osprey fills her boilers here with fresh
Delaware water, which, by means Of the condenser
she SEES over and over again until she GETS 10
Charleston, and might as easily continue round
the world Al that port she must empty the boilers
Of the hot water in order 10 cool sufficiently TO clean
the furnaces, and she fills them with the salt water
OF the harbor. NJ fresh cannot BE- had. The evapo-
raior is effective that sufficient supply is pro-
duced 10 render that in the boilers perfectly fresh
by the time che has reached the capes. The ship
has now made some seven or eight voyages and
the boilers are as perfectly clean as when new
"The Philadelphia and Atlantic Steam Naviga-
ton Company are the owners of this ship, and was
informed by the President, A. w. Thompson, Esq,
that they estimate the saving Of fuel Of very ma
terial importance. They are so highly qra,fed
with the performance OF the new condenser that
they intend TO have IL attached to the engines of the
new ships they are building for the same line. The
engineer, Mr.. George +. Coffee, expresses himself
much pleased with H. as he is enabled to get bet
ter vacuum. aRd also TO keep the water in the
boilers al an uniform height. j have TO acknow-
ledge the Kindness Of both those gentlemen for the
information here given.
The alterations were made by Mcs.rs. Ner-
rick ~ son. in their usual excellent manner aud
under the immediate supervision 81 the inventor,
Mr.. Joseph p. Prison, Of New York. who, lcafa,
has been four or five years in per fectng his inycn-
ton, and has now patents in the United states and
IN the principal countries OF Europe.
% do not Hesitate 10 express the opinion that his
invention will yet be the means OF shortening the
voyage from New York to Liverpoo, from one to
two days"