1797°] 
received letters patent, for a new me- 
thod of cooling and condenfing fpirits in 
the procefs of diftillation. 
The principle of this evaluable im- 
eee is as fimple as it is efficient ; 
r. Falconer has contrived to introduce 
2 veffel into his worm-tub, which he 
calls a refrigerator, from which proceeds 
an additional worm, to receive the {pirit, 
before it goes to the fave all, from the 
ordinary worm, which gives it a greater 
{pace of tube to pafs through, before it 
comes to the ciftern, er fave-all. The 
additional worm, which he introduces 
into the middle of the common one, is 
made of feveral coils, but may be made 
fquare or circular, at difcretion, and by 
having a greater length of coil, the fpi- 
rit becomes fooner condenfed, before it 
reaches the difcharging cock. 
GROVEs. Bo1LiInGc APPARATUS. 
On the 7th of Feb. 1797, Mr. JoHN 
Groves, of Chetham, Buckingham- 
fhire, received letters patent, fer an im- 
provement in the conftruction and fixing 
of Coppers, Boilers, Furnaces, &c. and 
alfo for a method of faving the confump- 
tion of fuel. 
To introduce lefs fuel, and divide it 
more equally in the aét of ebullition, are 
the objects of this improvement. The 
patentee effects the firft of thefe purpofes 
by confining the fire under the copper 
within a fmaller compafs ; and the latter 
by means of a tube, which receives the 
flame from the fire underneath, and which 
‘paffes through the fide of the copper 
into its contents. After the flame has 
performed a complete revolution within 
the body of the copper, it evaporates by 
means of a flue. 
Mr.Hopcson’s Meruop oF SEPA- 
RATING THE MINERAL ALKALI. 
On the 23d of February Mr. GEorGs 
Hopson, of Chefter, received letters 
patent for an improved method of fepa- 
rating the Mineral or Foffil Alkali, from 
the Muriatic Acid, as it exifts in com- 
mon falt.—Of this we have not been able 
to obtain fuch an account as would be intelli- 
gible to our readers. 
Mr. OXENHAM’s MANGLE. 
On the 28th of February Mr. THo- 
MAS OXENHAM, of Oxford-ftreet, Prefs- 
maker, received letters patent for a new 
Mangle, the principle of which appears 
to be at its height of perfeétion, becaufe 
of its fimplicity, and that it is worked 
by acommon lever. A child can work 
this Mangle, and it ftands in one-third 
of the {pace ufually occupied by mangles, 
avith no weight of ftones, as is peculiar. 
te others. The linen intended to be 
New Patent se Eodfon’s....Oxenham’ Se. 
301 
worked is put round an horizontal cylin- 
der, and by the power of the lever 
weight is preffed againft another -cylin- 
der, fo as to produce the defired effect. 
Mr. SILVESTER’s MasHInG Tun. 
On the 9th of March Mr. JoHn SIL- 
VESTER, Millwright, of Capel-Row, 
Marybone, received letters patent for an. 
improved method of mafhing and mixing 
malt, and all kinds of grain ufed for brew- 
ing, diftilling, &c. mk ia 
The principle of Mr. Silvefter’s in- 
Vention 1s to introduce into the mafhing- 
tun a fhaft, from which iffue points of 
‘wood in various difcretional directions, 
and which he has, with great ingenuity, 
contrived, by pullies and other mechani- 
cal alliftance, to keep in motion, without 
the affittance of an attendant. One-third 
of the common power which works the 
mafhed fluid is neceflary. and the opera~ 
tion ¢an be performed in one-fourth of 
the ufual rime of mafhing. 
Mr.Goopwin’s MasH1nG MACHINE. 
On the oth of March Mr. T. Goon- 
WIN, jun. of Lower Eaft-Smithfield, 
received letters patent for a new Math 
Tun and Mafhing Machine, to be ufed 
in all Kinds of brewing, diftilling, &c. 
The Math Tun, which may be of the 
common fort, receives the improvement 
of a falfe bottom of metal, perforated 
with anumber of {mall holes, to difcharge 
the mixture when fufficiently diluted, and 
the Mafhing Machine is an horizontal 
fhaft, which croffes.the diameter of the 
tun, and on the fhaft is built a wheel, 
from which feveral arms, or radii, pro- 
ject; in thefe radii are inferted {pokes 
that agitate the mixture when perform- 
ing a revolution on its axis. 
Mr. SELLARS’s SLAVER ENGINE. 
On the 11th of March. letters patent 
were granted to Mr. W. SELLARs, of 
Briftol, Spinning-Machine-maker, for an 
improvement in making and working 
machines for drawing out Wool, Flax, &c. 
Before the {pinning of wool, or cotton, 
it is neceflary it fhould be carded by hand; 
for this purpofe- combs were formerly 
made ufe of ; but Mr. Sellars has gon- 
trived, by the introduétion of fteel hac- 
kles, in place of wire, to prepare wool, 
cotton, &c. much more expeditiouily, 
for {pinning cordage or lines. 
The engine is nearly of the /oom form, 
capable of being worked by water, fteam, 
or horfe-mill, and draws out wool, hemp, 
flax, or tow, into a perpetual length, or 
flaver, prior to. the {pinning of thofe ma- 
terials, in the various articles, wherein 
they are ufed, fuch as linen, cotton, 
woollen cloth, and cordage. 
Q2 VARIETIES, 
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