356 
The invention 4s of great importance to 
those who require strong coke, free from 
sulphur and metal; and in addition to what 
Dr. Ure, Mr. Parkes, and other eminent 
men have published upon’ this subject, I 
flatter myself to be able, from my present 
experience, to give some more light on the 
subject of coke.—-London Journal of Arts. 
To JAcos Perkins, of Fleet Strect, in 
the City of London, and Joun Mar- 
TINEAU, the younger, of the City Road, 
in the County of Middlesex, Engineers, 
for their Invention of Improvements 
in the Construction of the Furnaces of 
Steam-Boilers and other Vessels, by 
which Fuel is economized and the 
Smoke is consumed.—May 1824. 
These improyements consist in con- 
structing and placing the furnace in the 
interior of the steam-boiler, brewing- 
copper, or other vessel, in such a man- 
ner, that it may be entirely surrounded 
by the water or other fluid to be heated, 
and the heat communicated by the ac- 
tual contact of the burning fuel against 
the sides of the furnace instead of the 
ordinary modes, in which the heat is 
principally communicated by radiation. 
The construction of this apparatus 
has nothing in it peculiarly novel; a 
furnace is placed in a recess formed in 
the interior of the boiler, the fire-bars 
rising about an inch above the level of 
the bottom; the flues leading from the 
furnace through the water to the chim- 
ney. A hopper is placed above, into 
which a considerable quantity of coal, 
in a pulverized state, is put to supply 
the fire for several hours, and from 
whence it falls through a tube sur- 
rounded by the water. 
The fire does not extend upwards 
above the level of the top of the flue, 
and as the fuel becomes expended, a 
fresh supply falls down from the hopper. 
The smoke being conducted through 
the fire before it reaches the flue, all its 
combustible part becomes entirely con- 
sumed, and thereby the heat of the fur- 
nace is considerably increased. 
The proportions and form of the fur- 
nace may be varied according to ‘the 
size and design of the boiler to be heat- 
ed, and in many cases it may be desir- 
able to place the furnace in the centre 
of the vessel, and to lead off with two 
flues in opposite directions, in which 
case the opening for the chimney should 
be placed in the side. 
The patentees say they do not mean 
List of Patents for New Inventions. 
[Nov. 1; 
to claim to themselves the exclusive 
use of this particular mode of keeping 
the fire supplied with fuel, excepting 
only in conjunction with a furnace on 
the principle described.* 
A List or Parents ror Naw InvEen- 
TIONS, granted in July 1824. 
August 5.—For improvements in the 
construction of spinning machines: to J. 
Price, of Stroud, Gloucestershire.—Six 
months. 
5.—For anew compass for navigation and 
other purposes: to G. GRADON, of Bath, 
Somerset.—Two months, 
5.—For his invention of a means for 
evaporating fluids, for the purpose of convey- 
ing heat into buildings, for manufacturing, 
horticultural, and domestic uses: and for 
heating liquors in distilling, brewing, and 
dyeing, and in making sugarand salt, with re~ 
duced expenditure of fuel: to WILLIAM 
Jounson, of Great Totham, in the County 
of Essex, gentleman.—Specification in four 
months, 
9.—For improvements in the modes of 
propelling ships and vessels: to J. PERKINS, 
of Fleet Street.—Six months. 
10.—For a new filtering machine: to H. 
Scnropver, of Hackney, Middlesex.—Two 
months. 
~ 11.—For an improved method of heating 
woollen cloth for the purpose of giving tt a 
lustre in dressing : to JOHN FassE1, of Wells, 
Somersetshire, edge tool maker. — Two 
months. 
16.—For certain improvements in pro- 
pelling ships, boats, or other vessels or floating 
bodies: to JAMES NEVILLE, of High Street, 
Southwark, Engineer ; and W1LL1AM Buck, 
of Broad Street, London, Esq. — Six 
months. 
28.—For his improved method or me- 
thods of abstracting or carrying off the calorie 
of fluidity from any congealing water (or it 
may be other liquids). Also an improved 
method or methods of producing intense cold. 
Also a method or methods of applying this 
invention so as to make it ayailable to pur- 
poses with reference to which temperatures 
about or below the freezing point may be ren- 
dered productive of advantageous effects, whe- 
ther medical, chemical,.or mechanical: to 
JOUN VALLANCE, of Brighton, Sussex, Esq. 
—Six months. 
NEW 
“ This application of the furnace within 
the boiler is by no means new. There is 
a slight modification in this arrangement, of 
Mr. Perkins, by which he more effectually 
economizes the heat than was previously 
done ; and he has taken advantage of this 
circumstance in the construction of his 
high pressure steam-engine. 
