172 
tate: They may either be formed with 
one point, or pointed at each end, or with 
two or more points. The inftrument is 
then to be applied to thofe parts of the 
body which are affected with difeafes, to 
draw them off on the {kin to a confiderable 
diftance from the feat of the complaint to- 
wards the extremities. The difeafes mof 
readily cured by this metallic influence are 
rheumatifm, gout, pleurily, infiammation, 
&c. The part affected and the metal 
mutt be free from greafe, before the ope- 
ration commences—relief, in trifling cafes, 
may be expected in fifteen or twenty mi- 
nutes ; but, in obftinate and jong ftanding 
difeafes, the operation muft'be repeated 
for feveral weeks, at the rate of two or 
three times a day. 
Obfervation.— W hatever merit may be- 
long to Mr. Perkins, as being the firf 
perfoh who applied the combinations of 
thefe metals to the cure of difeafes, yef, as 
he has no claim to the original difcovery 
of the Galvanic fyftem, which had been 
known four or five years before his pa- 
tent was enrolled, the public will natu- 
rally afk, why he fhould charge ‘five gui- 
neas fora pair of tractors, the intrinfic 
value of which cannot probably be much 
more than a fhilling. 
® If their influence be fo extenfive as Mr. 
Perkins would lead us to imagine, we re- 
gret the price is not more moderate, 
which would be beneficial to the public, 
and,at the fame time,prevent thofe piracies, 
again{t which, in this particular cafe, we 
doubt whether he would have any legal re- 
drefs. 
—= Ae 
MR. MATTHEW MURRAY'S (LEEDS) for 
new combined STEAM-ENGINES far pro- 
ducing @ CIRCULAR POWER, and for 
certaig MACHINERY belonging to it, ap- 
plicable to the DRAWING of COALS, 
ORES, and all other MINERALS, jrom 
MINES, aud for SPINNING COTTON, 
FLAX, TOW, aud WOOL, or for any 
PURPOSE requiring CIRCULAR POWER. 
The merits of this invention cannot be 
explained, without referring to the figures 
annexed to the fpecification; but, it may 
be obferved, that the feveral parts of the 
engines do fo combine and unite, as to 
form a perfect machine, without requiring 
any fixture of wood, or any other kind of 
framing than the ground it ftands upon, 
and it is transferable, without being taken 
to pieces, the motion of the fly-wheel 
fhaft giving circular power to any procefs 
or manufactory requiring circular motion, 
ee 
New Patents lately enrolled. 
: aati 
[March 13 
or for irrigating land, or for various pur 
pofes of agriculture. 
ea ‘ 
PATENT FOR FIRE-PLACES. 
A patent has been taken out by 
Cuarves and RaPHAELLE PEALE, in 
America, for improvements in the com- 
mon fire-place*. “Thefe’ fire-places are 
made in the form and manner recom- 
mended by Count Rumford, with thead-. 
dition of a fliding-mantle, and valve or 
damper. The valve is made of fheet- 
iron, and placed about ten or twelve 
inches above the opening of the fire-place, 
in the throat of the chimney, and fitted 
to fhut clofeon the top of the brick-work, 
which fhould be left fiat. ‘The fliding- 
mantle is made alfo of fheet-iron, and fo 
contrived as, by means of pulleys and 
weights, to move freely behind the pilaf- 
ters or frame, compofing the. frontispiece 
of the chimney. 
The advantages of this fire. place are, 
1. that the fire may be kindled quickly ; 
and, after it burns freely, the valve or 
damper being lowered, leaving only an 
opening fufficient to carry off the fmoke, 
confequently but little heat can efcape in 
the throat of the chimney. 2. ‘If the 
chimney is fubject to fmoke, the fliding~ 
mantle may be lowered to increafe the © 
draught. 3. The danger from fire is pre- 
vented ; for, whatever fire is left in the 
place at night, with the valve clofe fhut, 
and the fliding-mantle lowered to the 
hearth, will be {mothered. A chimney on 
fire may, by the fame means, be inftantly 
extinguifhedt, 
ee ’ 
PATENT FOR CARRIAGES. 
In Paris a patent has been obtained by 
M. Tarin, for an invention of machine- 
ry to be attached to carriages of every 
Gefcription to prevent them from break- 
ing down. ‘The advantages propofed by 
this invention are, 1. That it preferves in 
equilibrio, without the flighteft fhock, 
and ftops in its courfe, however rapid, 
any carriage to which it is adapted, either 
if the axle-tree fuddenly break, or if the 
nuts of the wheels fhould come Off. 2. — 
That it enables any carriageto continue its - 
route to the place of its deftination, even 
with a broken axle, or if the nuts be loft. — 
3. That it produces no additional weight, 
and is not even apparent. ee 
* See American Philofophical Tranface , 
tions, vol. v. 1802. 
+ Ina future number, we fhall give an ac= — 
count of two new patents taken out in Leon= — 
ALPHA 
don for improvements in ftoves, 
