52 
one third .of its circumference, againft 
which the beaters firike, and thereby fe- 
parate the corn fromthe ftraw, and deli- 
ver both cut at the other end of the faid 
trough, where: it may pafsS over, if 
thought proper, a {creen to be winnowed. 
By means of a f{crew, the trough under 
the cylinder, is raifed or lowered, as ne- 
ceflary, fer different forts of grain. The 
fluted rellers are turned by two wheels, 
one of which is conneSed with the hori- 
zontal fhaft, by means of a click-wheel, 
when it is intended to work the machine 
by horfe, or other fuperior power. This 
click-wheel is fo conitru@ted that no acci- 
dent can happen either to the machine or 
horfe, fhould the animal fuddenly ftop. 
But fhould this happen, or fhouid the fhatr, 
- by any other means, be fuddenly checked, 
the machine would continue iis courfe 
(from the velocity acquired by the fly- 
wheel) without injury, until it topped of 
itfelf ; for the clieks would then meet a 
bar the contrary way and flip over it. This 
continuance, the Patentee thinks may be 
applied to confiderable advantage in va- 
rious other kinds. of machinery. He adds, 
that he does not think it neceflary to men- 
tion the various materials of which the 
machine fhould be confructed, as every 
workman mutt be a competent judge of 
that matter, and will of courfe vary them 
according to circumftances, 
‘The drawings reprefent a machine of a 
two-horte power, which will cavfe the cy- 
linder to make one hundred revolutions in 
a minute, which velocity may be increafed 
or diminifhed by aliering the number of 
wheels, or cogs on the wheels, either be- 
longing to the machine, or horizontal fha‘t, 
er by other means known to every expe- 
rienced mechanician. 
Obfervations by Mr. Noon. ‘*-The ad- 
vantages arifing from this machine are ve- 
ry confiderable, it having lefs friGtion, 
than any other that has hitherto come to 
my knowledge, and confequently it does 
more work with the fame power, and lefs 
injury to the fraw. It is alfo lefs liable 
to accidents, and when out of order may 
be repaired by a common workman, 
MR. ROBERT FRiTH (BROUGHTON, 
LANCASTER) for an improved Methed 
af dying Cottom-ewool, Cotton-tawift, 
Cotten-weft, and Cotton-cloth; of a 
Nazxkeen colour. ; 
This invention confifts in the ufe, either 
conjoined, or fucceffive, of an infufion, or 
decoction <f galls, mahegany bark, alder 
ba:k, oak bark, elm bark, fchumach, and 
madder, or of any one, two,.or more of 
New. Patents iately enrolled. 
[Feb. 4 
them, andof a folution. of iron, prepared 
by means of the fulphuric, nitric, mu- 
riatic, and-acetous acids, or any oneé or 
more of them, or by any other acid or acids 
commonly ufcd for fuch folutions, or pre- 
pared in any oth-r way in which the folu- 
tion of iron, commonly called iron-liquors; 
is prepared. 
Mr. Frith difclaims, under this patent, 
the ufe cither of the infuficn or decoction 
folely, or of the folution fclely ; and con- 
fines his invention, and right to the uf of 
beth, either jointly or fucceffively, the 
fame having. never been before, either 
jointly or fucceffively, ufed in the fame 
procefs in dying buff or nankeen, and be- 
ing fubitances which probably were not 
tried for that purpofe, becaufe they are 
the common ingredients ufed in making 
back ink. ; 
Re alfo thinks it right to difclaim any 
title to the inventidn of making’ or pre- 
paring the above infuiion or decoSion, 
and folution,; or any of them; and then 
he points out the manner in which he cow- 
neéts his invention with other known pro. 
ceffes, and which may be-thus deferibed. 
After waihing the fubftance to be dyed in 
hot water, it is to be dipped into an infu- 
fon or decoction of galls, mahogany-bark, 
&c. &c. or of any one, two, or more of 
them ; it 1s now:to be paffed through the 
folution of tron, and then to be. well 
wafhed in warm water; afterwards ta be 
pafled through a folution of foap and wa- 
ter, or throvgh a folution of any of the 
alkalies in water, er through lime-water ; 
and lattly, while wet, it is to be dipped 
into a.folution of tin, prepared by means 
of either the nitric acid, or the muriatie 
acid, Or the nitro-muriatic acid, diluted 
with warm water. After wafhing the 
fnb{tance in the ufual way, the operation 
is complete. 
Obfervation by the Patentee.—t may 
be proper to add; that, in the above pro- 
cefs, an infufion or decoction of galls pro- 
duces a yellowifh buff-colour ; and that 
the addition of a fmall quantity of maho- 
gany-bark, cr alder-bark, to the infuficn 
cf galls, produces a proper buff-colour ; 
and that the addition of a greater quan- 
tity of bark produces a nankeen-colour.— 
The proportions of each may be varied 
according to the fhade of colour which 
the dyer wifhes to preduce, 
Me =a ae 
MR. ARTHUR WOOLF’S (SPA FIELDS), 
Sor certain Improvements in the Con- 
Sradtion of Steam-Engines. : 
Mr. Woolf has afcertained, by aétual 
and decifive experiments, that fleam, act~ 
ing 
