536. | New Patents lately enrolled, [July 1, 
fixed at the proper distance from the pletely extracted from the substance to 
saw, and the piece is passed up to the be converted into extract, then the re= 
saw in the required width. maining membrane may be reduced to 
For splitting or paring skins, the two soup, and the refuse bony parts may be 
wheels are laid level instead of being manufactured into: phosphorus. 
over each .other, and an endless kuife is We have given the outline of Mr. 
worked upon them, to which are affixed Plowden’s plan; but we apprehend the 
two whetstones, one above and the other process in practice, will not be found 
below it, so as to sharpen the knife as # sufficiently economical to answer the 
goes; it is used with the rollers of a public wishes. 
common skitesplitter; the plate of steel a 
for the saw or kuife may have its two MR. BRYAN DONKIN’s (DARTFORD), for a 
ends rivetted or brazed together, or they | new Mode of producing a rotary Mo- 
may be shut before it is. brought to its ton upplicable to useful Purposes. 
thinness, and drawn down afterwards. This invention is carried into effect by- 
| aiaiidiies— introducing steam beneath the surface of . 
BIR. FRANCIS PLOWDEN’S (ESSEX-STREET, water, or any other dense fluid, at a tem- 
LONDON), for preserving Butcher’s perature too elevated to produce any 
Meat and other Substances, palatable considerable degree of condensation in 
and sweet, without Acid, Salt, Drying, the same, and within the said fluid and 
Sc. for an extraordinary lene rth of iunmediately over the place of introduc- 
Time: tion of the steam is disposed an inverted 
Mr. Plowden explains, in his specifi-. vessel, which, when filled with steam, 
cation, the chemical nature of the putre- will ascend with considerable force, and 
factive process, observing that, though carry with it any other moveable appae 
the atmospheric air be not the sole cause ratus to which it may be attached, until 
of putrefaction, yet it certainly acce- the arrival of the said. vessel to ‘such a 
lerates it,,and therefore the preservation place or position as. shall permit the 
of such bodies trom the immediate con- steam to escape. And various other 
tact and influence of the air must re- vessels are to be disposed and combined 
tard and prevent putrefaction; “if there- with the one already mentioned, either by 
fore, (he adds) these bedies, while sound «fixing the same to the periphery of a 
and untainted, can be-closely enveloped wheel, or to a circulating chain &c. in 
in an air- proof medium, so as to prevent such a manner that the ascent of any 
evaporation or*exhalation, their decom- bucket, or buckets, contaihing steam 
position must be arrested as long as the shall regularly and successively cause the - 
circumambient preservative continues to- other bucket, or buckets, to arrive at 
resist the admission and action of the the proper situation for becoming like- 
air.” The substance of which Mr. Plow- wise charged with steam, and bead gn 
den proposes to form the incrustation is 1n their turns. 
very highly dried essence or extract of | This method, then, of producing a rO= 
_ Meat. » The substance to be preserved, tary motion consists in the construction, 
must be wiped very dry, if dressed the use, and application of the usual steam 
better, and care must be taken, that it boilers, and of the receptacle, with its 
contains uo insect, or other active cause Charge of hot water, &c. and of the:com- — 
of corruption; and every part of itshould bination of buckets, by a. revolving wheel 
be completely enveloped with the ex- or by an endless chain and buckets, &c. 
tract, so that no vacuum or interstice be and the motion so produced in the 
left open, and it should be applied in wheels round which the said buckets 
that fusible state as to find its way into must revolve, in consequence of this 
every part. successive ascent in the said dense fluid 
The patentee seems to be fully aware is the motion intended to be produced, 
of the expensive nature of his process; and which may be applied to mills and 
every joiut of meat to be preserved, we other useful purposes. by 
should think, would require one as large,. : as ty 
or indeed very much larger, to be con- MR. SAMUEL WILLIAMS'S (FINSBURY- 
sumed in obtaining an extract for the squares), for a new and improved Ma- 
purpose required. ‘He therefore observes,  chinery for preparing and Spinning 
by way of note, that the extract will,-af- Wool, Cotton, Hemp, und ether fila 
ter it has been so used, we presume he  menious Substances. 
means, afford a pleasant and nutritive — The’ specification which sets forth 
‘soup. And when the gelatine is com- these improvements is very long, By and the 
gures 
