1807.] 
[ 475 ] 
NEW PATENTS LATELY ENROLLED. 
— - 
MR. JOHN LAMB’S (KING-STREET, MER- 
cHant), for certain Improvements 
in and upon a Machine for extracting 
Fresh Water from the Salt Water of 
the Occan. 
Gens machine, which is called a 
hearth or camboose, for the use of 
ships and vessels, or otherwise for the 
purposes of cyoking at sea, as also sup- 
plying from the evaporation and conden- 
sation of sea or salt water, a sufficiency of 
ood fresh water for the ship’s use. The 
earth or camboose is to be made of cast 
er wrought iron, or any other proper 
metal or material of either a square, ob- 
long, or other convenient figure. The 
front range, or fire-place, where the fuel 
is introduced, to be in one or two patts, 
and one or two dampers or douters, made 
sO As to raise up and slide down on to 
the front grate, or a door or doors, oval 
er bulk, or any other convenient shape, 
so as to close and shut up the front, and 
confine the heat arising from the fuel 
consumed. By raising both dampers the 
fire draws under, and communicates to all 
the kettles, -boilers, or coppers, for the 
purpose of cooking; and also supplies 
vom. the evaporation and condensation, 
er distillation of sea or salt water, good 
fresh water for the ship’s use, at the same 
time of cooking. By raising up one 
damper, the fire communicates to two 
or more boilers, or to one boiler only, as 
may be required, by raising up the other 
damper.. When no fire is required in the 
front, the dampers are to be down, and 
the fel introduced (into a small door 
made by the side of the oven) directly 
under the two or more cooking boilers. 
All the boilers are to be placed in the 
back part of the hearth or camboase;. 
and by drawing out a horizontal damper, 
to be made in the back side of the hearth 
or camboase, and to draw out from be- 
tween the cooking-boilers, and the dis- 
tilling-boiler, will admit the fire to draw 
under the distilling boiler, which boils it 
the most rapidly by the draught of heat 
which otherwise would be lost, by going 
out at the flue, or common smoke pipe, 
On part of the top of the distilling boiler, 
(where the sea or salt water is only in- 
‘troduced,) is to be fitted a moveable 
cover, to shut steam-tight ; by the end or 
side of which (to cover the other part) is 
to be fitted a permanent cover, steam- 
tight, in the centre is to be a hole, with a 
collar convenient for fitting on a pewter 
Monruzy Mac.; Ne. 164, 
stil! lead, into which the steam. rises and 
passes along a pipe, or worm, into a re- 
frigerating or condensing vessel, to be 
made of any convenient shape to fit the 
apertures. In this refrigerating or con- 
densing vessel, is to be fitted a worm or 
pipe, which is to wind or turn thereiu, 
along which the steam must pass; and 
where, by the effect of cold sea water, 
with which the refrigerating or conden- 
sing vessel is to be filled, the steam is 
condensed, and the fresh water flows out 
of the lower end of the worm into a re- 
servoir, placed underneath for the re- 
ception of fresh water. On the top of 
one or more of the cooking boilers, is 
also to be fitted covers, still-head, and 
pipe, tube, or worm, to communicate with 
a separate worm, to be fitted in the same 
refrigerating vessel, alone which the 
steam must pass and condense, and the 
fresh water flow out of the lower end of 
the said worm into a separate reservoir, 
allto be made and to operate exactly in 
the same manner, as is mentioned in the 
making and operation of the still-boiler. 
With this addition, in the centre of the 
moveable cover of one or more of the 
cooking-boilers is to be a hole, in which 
is to be fitted a steam-kettle, for cooking 
with steam when necessary. On the 
cover or top of the refrigerating or con- 
densing vessel, is to be a hole to admit a 
steam-kettle, of sufhcient size for cooking 
with steam when necessary ; the steam to 
be let into the said kettle by a pipe, or 
tube leading from the head-pipe or tube, 
fitted to the cooking-boiler, and the steam 
to pass out of the said kettle into a pipe 
or tube fitted thereto, and leading di- 
rectly into the same worm, fitted in the 
refrigerating vessel. In this vessel is to 
be fitted a hand-pump, or any other con- 
veniency tor the purpose of throwing out, 
or drawing off, the water when it be- 
comes hot, so as to admit cold sea-water 
for condensing the evaporation as before- 
mentioned. 
Mr, Lamb declares, that from frequent 
experiments since the first day of Janu- 
ary, 1803, in the operation of the afore- 
said machine or machinery, at sea and 
on land, the great utility consisteth in 
confinmg the whole of the heat, arising 
from the fuel consumed, to the purposes 
of cooking; as also to extract fresh water 
from salt water for the ship’s use; the 
consumption of fuel will be lessened, and 
a greater effect produced than in the 
$ usual 
—_ 
