Evening star. [volume] (Washington, D.C.) 1854-1972, 1858-08-17
STBAM MACHINERY FOR SCREW PRO.
SsPHE REV. sL 6 96p AT The =.


sx.,,, N.vI D.r..rxE.r, July .: ,sss;
nMtssgw Maeitaery for Sorsrc Prepeii.r Sleeps Of
O'Clock r b. Of FtS.sed a, tss snt
me complete construction of the steam machine ~
snc and pacing the same on board for
g. NAVY Gaids at Portsmouth, N. H., New York.
ma, Sna port, In accordance with the
The offers must be for specific sum for putting
.ne Sh4e 10 saccessLvI operation, must include all
Jesse from the prepneors Of any patented or
srIangemenfs used IN or about the machinery. and
pieted and m1st be aeoompsnied by the usual guar
The name OF the Establishment in which the work
10 TO be executed must be stated. The details Of
the design and ARRANGEMENT Of the machinery Will
cepted as combining the greatest number Of asvsn
tases, keeping IN VIZ " cost, simplicity Of construo
operation, and not being subject TO derangement IN
the working rarts; being the object OF the depart
power when required So as 10 insure high speed for
as many days as possible, while st the same time
snss W. Pc sss to propsl re vessel a. moderate
ages ma, . be PsIfrmed with one supply Of coal.
w TN thls view. the department viii expect the
bidders 10 guaranty the results proposed 10 be 40
camP shed by tGeIr plans. and to specify those re-
suits under the following heads: = - :
LIST. The amount of horse power which the engines
and boilers will be abe to develop for i've days CON
secutlyey when driven up to their ghest apacitv,
at the rate of 50 OO pounds lifted one foot high In
minute, and to be not less than 600 horse power
and al least 50 revolutions per minute =
The cOisum ptIon of Goals per hor Sc power per
hour must be stated. The pressure an pounds Der
Engines az the above Velocity the Crew bsar d tse
connected and the engines without a load except
the line 81 shailns must not exceAd ~ pounds per
sauare inch of piston by indicator diagram.
d. The quantity OF coal which DC slowed in
Tons io6 mach cry, hppeldasos. boilers and water
u, III . theii onnkers. 'SoIs square pieces, and coal
M inf fha fn,,f+at .f.,lox
kind, with brass tubes and with telescope smoke
Pc and as is intended To use fresh water in the
ooil,r suriace condenser OF the most approved
kind will be required.
tGe propeller i'm the connections for hosting n
for at least 80 revolutions per minute and for the i'm
mersed amldshlp section ofthe vessel.
t'narces OF II kinds necessary for the perfect work
Ing Of the whole 10 be OF he most approved kinds
The coal buRkers. shan passage. Two atb wartship
iron bulk heads, dIsii ling apparatus for fresh
water from which can be made ot less than 500 sal-
oesssry and satisfactory for an efiicient cruisinr
steam sloop o-war, must be included In the propo-
The wood and carpsn ef WORK. except the borpy
out the dead~ God tor the shaft necessary to adapt
ns nor ssCep ION OF hs boil
OF the NAVY pepaItmeEt and 1. will permit the use
Gt sIen as 1t may have for hosting the
| Fertile econ modatIon of the entire steam ms
cainery and Inc fuel there will be SLOWED DO ~
of the snip, the entire space under the spar deck
Co" menclns at Is feet ats,t the main mast and
| thence extending forward distance of 50 feet.
tnln this space IL Is expected to carry coal for
hye day g steamIns at the maximum speed.
FIJI iG the spec, the daiy oohsomption Of
coal, boilers, water IN them shaft propeller and az
penGages with tools and spare work: all of which
must not ex coed ACC tons of 240 pcusds. - :
The distance from the after side Of the malnmss
70 the ater side Of the forward stsFn post viii be
about ~ fSet, and the distance betw The forward
ana the after stern posts will be seven feet The
deth from the load water lire TO the top OF the Keel
under the propeller will be u feet inch
Inc proposal must be accompanied by full speck-
cations and general drawings, having the position
9t The centre OF gravity OF the machinery. JoIers,
&c, mlrked on them, giving also the capacity OF the
tean cy Inders, pressure OF steam Of foot snd
delivery valves, and of air pump and cupboard de
livery val yes, space for steam above the wait Il ne
oIthe ooleIs the hre and crate surface. also the d.
aIneteT, pitch. surface, and klnu of propeller and
be made.
The terms of pay mert will be that, when one half
raot shall have been completed 10 the satisfaction
a, Of tSs Whns .aere T re made Of
the whole snail have been comp eted and ready foy
eIsssion IN The ship further payn ent OF 6 VIII be
secutlve days shall h1vebeen made, then further
payment of s; and when the ship shall have per
l"Tms satisfactorily at sea for period of three
months, the remaining sum shall be paid. The re-
pairs necessary during this period from defective
wofkisns ~ or mater as Will be at the expense Of
l. is be understood that if the weight and of her
con irons specified IN the contract be not oonped
with the department to be at liberty To Teect the
wnoe machinery the contractor to be at the ense
oi taking out Of The ship and to refund Whatever
amount of the contract price msy have been paid
Proposals will also he received at the same time
and place for the steam machinery and appeadae es
anu pIscing the same on board each OF the screw
si0ops-of war building At the navy yards Boston,
philadel Phls and Pensacola. under the sps 0iEcs-
tI"ns and conditions above stated, win Variations
IN Tie following PARTICULARS, VIZ:
LIST. Horse poser $50 at, at least, 80 revolutions
I'd. The total weight for mach merry appendages,
boilers and water IN them. bunkers. tools. sp re
pounds each. The length occupied bs The engines