Evening star. [volume] (Washington, D.C.) 1854-1972, 1858-08-21
CTEAM MACHINERY FOR SCREW PRO-
sSfEkkER sLOOPs- 9E;WARA At THE y.
sos SION fnA Nv y 81 e.

B soNs AN YnAkSs 81 R6RISa9Hfd f,
- NAVY DxrAlrMEsr. July Is. ls5s.
Sfe1w Maeh,nsry for Sorea Prepsltsr Shops Of
I;ca,r wall be reeeived a, tins DEPARTMENT antl
the complete constr uction OF the steam machnfTy
ana appendages and piscing The same ON board, for
:. Navy Yards Portsmuuth. n. H.. New Yorf.
Phlade phla. nnd 6osport, In accordance with the
The offers must be for ST ,ifc sum for putting
the whS.s IN .seSssstn, must include all
lease from the propretors Of any P.iente article OF
sTrsnssments used m or about the %achipsry, AID
peted, and mlst be accompanied by the usual
antee requlredby
is to be executed must he stattd. The details Of
the design and ARRANGEMENT OF the machinery VIII
oepted as combialng the greatest number OF sovan
tases, keeping in view cost simplicity of ccnstruo
operation. and not being subject 10 derangement
the working parts; It being the object Of the depart
power when required as To sure hs n peed for
as many days As possible, while at The same time
speed with great economy of fuel. that long voy
ages may be performed with one supply of coal.
" lth this view, the department will expect the
bidders TO guaranty the results proposed to be
compl shed by tier plans. and TO specify those
Ist. The amount OF horse power which the engines
and boilers will be able to develop for i've days con-
to be on board the vessel by the inascstor
at the rate Of IS 600 pounds lifted foot high in
minute, and to be not less than 900 horse power,
and at least 80 revolutions per minute.
The oonsuH ptIon OF Goals per horsepower per
square loch on, the piston Necessary to work The
engines at the above velocity the screw being DIS
the line II s.ftins must not excsed az pounds per
square lnoh OF piston by indicator diagram.
the ship without exceeding The total weight Of 4o
tons ior mscni cry, appendices, boilers and water
within ths length occupied By The engines and boil,
eIs. the boilers TO be OF iron Of the multtubuar
pps and as Il is intended to use fresh ~stsr in the
boilers, sarfs ce condenser Of the most approved
Tine propeller with the connections forholsting Ii
& ee oil eSmposlI,i1n to be properly p,oso.tioned
msIsed amidship section 81 the vessel. - 'A' "
Inc pun Ps; aPplratus Tor ven'llatlne, and appur
ng Of the whole to be most p Rds
The ocal huakers. .haft passage two sthwartship
iron bq t heats. d,,,i ling apparatus foI fresh
sis,on. AND : list Of them must Be furnished.
the sn Up the ,n the
the vessel 10, tie ssSsI ION Of The 1sehnsIy boil
ofhe Ssyy pepsrsment and IT % pett bs nss
81 snoh aS;sdss as It may have for hosting the
| For the ,ccommodatIon of the entire steam ma
ohinery and the fuel there will be a. lowed in the bofy
od s sep; tse entire SPACE under the spar deck
thence extending forward distance OF 50 feet.
this sDaoe r. expected to carr. coal for
| In the specific nions, the daily consumption OF
oos .boers water tbem ss o. proueer sn6
pendages, with tools and spare work; all Of which
ri. nss S tons ION e0 ~ s
to the sfsg SIDE Of The f.rws,d stern posi- will Be
| and the after stern posts will be seven feet The
from the load water line to the top Of the
undeT the propeller will be '2feet inch.
| The proposal must be accompanied hy full specIf-
Of the centre of gravity of the machinery. boilers
steam oy nders, pressure Of steam area Of foot and
delivery valves, and of air pump and outboard de
the boilers the Re and crate surface aso the d..
| ameter. pitch, surface, and kind Of propeller and
Be made S'Pa points, 'h'' comparisons can r'aan'
The terms of pay ment will be that when one hall
tract shall have been com leted to the satisfaction
| Of the Impairment. there will I've made pay ment OF
the whole shall have been comp eted and ready fo1
erection in the ship further payment of l-6 will be
secutive days shall havebeen made, then q further
payment of s: and when the ship shall have per-
at isa Be-
pairs necessary during this period from defective
workmanship or materials viii be at the expense OF
is be understood that if the weight and of her
con"it ons specified the contract be not complied
with, the de be liberty to reject the
Whole machinery. the contractor To he at the
of taking out of the ship and to refund whAteyer
amount OF the contract p!Ice may have been paid.
Proposals. will also be received at the same time
and place for the steam machinery and Ldages,
sOops- Of building the navy yards at Boston,
phlladePhla, ard Pensacola, under the specIhca-
IN the follow ing particulars, VIZ:
LIST. Horse power $50 at, at least, 80 revolutions
| I'd. The total weight for machinery, appendases,
boilers and water IN them. bunkers. tools. spyre