The Portland daily press. [volume] (Portland, Me.) 1862-1921, 1862-07-21
Proposals for Paddle-Wheel Steam
Machinery for the q. s. Navy.

rIVfiE NAVY DEPARTMENT will, until the 18th
Il day Of july, receive sealed proposals for the
Steamers
Each steamer win have one inclined engine of not
lass than le cubic feet displacement Of piston per
stroke; the length Of the stroke to be about feet
inches. The frame to be of yellow pine. strongly
kneed. boted and braced.
There will be Sewalrs surface condenser In which
the condensing surface will be composed of drawn
brass tubes five eighhs inch outside diameter: tube
and followers of brass; total Of eondensing
face 300 square feet capacity Of arpump consider
ed single acting) Is cubic et capacity Of crcuIa-
ting pump considered single actingl Is cubic feet;
inlet and outlet pipes TO pumps TO have net Of
not less than two-thirds of the pumps pistons re-
cciying and delivery valves Of pumps TO have net
area OF opening OF not less than one and half time
the area Of the pumps pistons valve seats of brass
The cylinder is to have brass balance poppet valves
OF IL and IL inches diameter valve seats of brass-
Steam valve to be arranged with Stevens cut off,
The whole valve gear to be finished and arranged
foT ,working booked Z. on back as well as ahead
The cTanks to be Of wrought iron turned and planned
The shan to be Of wrought iron turned. The cut
board journal Is 10 be three feet in length.
All cylinder covers. valve-chcst and pump bonnets
with their bolts and nuts and links and connecting
A punger feed pump and bilge pump. Of brass, to
be provided of u cubic feet capacity; valves of gum
to have net opening Of twice the capacity Of tho
pump.
The pumps are to be worked BY wrought iron arms.
turned and planned and secured upon turned wrought
iron shaft which Is to be worked from the main cross
head by finished links, and wrought iron levers turn
ed ard planned.
The paddle wheel is to be overhung. to be Of
wrought IRON and % feet inches in extreme dame
ter Paddles to be twenty-four in number, feet 8
inches long. and Is inches wide.
There are to be two Martin boilers placed opposite
each other, with fre-room between. Length Of boil
er IS feet, width 10 feet inches height about feet
inches to contain FIVE furnaces each: the furnace
be three feet wide; length Of CRATE feet inches:
total crate surface 1876 square feet total heating
face not less than 5000 square feet Shells with tho
exception Of the bottoms to be of 5-16 inch plate;
bottoms. furnaces, and arpits Of three-eighth inch
plate; TO be double rivetcd and braced for hydro
static test pressure Of 60 pounds per square inch.
Each boiler Is TO have a No. Dimpiel blower blow
ing into the back Of the ash-pits-
All the detail, hnish quality Of material and work
manship TO be irst-cass proportional for working
boiler pressure of 10 pounds per square inch, and
conformabe TO the specifications previously printed
ed by the Department for paddle-wheel steam mach-
merry. There will also be furnished the TOOLS dup-
cate pieces instruments. &C., required by those spee
hcafions.
The proposals will state the names of the bidders In
full and Of their sureties the gross sum- covering all
costs and claims against the government whatever on
account Of the machinery for which they propose TO
furnish in the vessel, complete and ready for steam
ing discriminating between the two Of erecting
IL in the port and Of Transporting and erecting
IT in another port and the time from date of contract
IN which they will guaranty TO complete II in the
sci ready for steaming provided the vessel il ready
receive II twenty-one days earlier III the vessel Is
the same port and one month earlier If at another
port ii not ready, twenty-one days month"; ae-
cordng to the will be allowed for completion
from date of readiness.
The contract will embrace the usual conditions and
payments will be made in the usual manner as the
work progresses.
The proposals are to be endorsed "Froposals for
Puddle Wheel steam Machinery." to distinguish
them from other business letters.
The Department reserves the right TO reject any or
all of the proposals made under this advertisement
If, in its opinion, the public interests requires.
No proposals viii be considered except from pro-
prietors of marine engine building establishments
jullicodsw