266 ; 
of rendering the theeads more denfe and 
cleaner. ‘To perform this compreffion, 
he fixes on a block a frame, containing a 
number of copper moulds, each of which 
has the form of an inverted cone, and is 
intended ta receive one half of each of 
the fpindles. A fimilar frame with cor- 
vefponding moulds, but with the bafe of 
the cone downwards, is fixed in a {crew 
prefs, and is let down upon the inferior 
grame in fuch-a manner, that the upper 
and under moulds, when in contaét with 
each other, form a cavity of the thape of 
the fpindle, and rather lefs in dimentfions. 
To_apply this machine, the fpindle of 
cotton-thread is fet into the under moulds, 
and the upper frame Jet down upon the 
projeCting half of the fpindle, and by an 
arm fcrew-prefs the whole is fubjeéted to 
great® preflure without deranging the 
threads, but only rendering them flatter 
and more compact. The fpindles for the 
woof of the web are preffed in this way, 
without any previous preparation; thofe 
¢nténded for the warp are firft boiled in 
flour and water, and when fully foaked 
with the pafte are put into the prefs. 
When thus pafted, they will retain their 
arrangement, and may be tranfported from 
place to place without any damage. 
=a Sa 
MESSRS. FUSSELL aud DOUGLASS, for 
a2 APPARATUS for LESSENING FRIC- 
TION in ratfng heavy BODIES. 
fs PATENT was granted in November 
faft, to Mr. James Fussewt of Mills, 
in Somerfetfhire, Iron manufaCurer ; and 
to Mr. James Douctass of Church- 
ftreet, Surry, Engineer, for an apparatus 
compofed of chains, wheels, rollers, and 
conductors, for the purpofe of leflening 
friétion in_raifing heavy bodies. The 
principal invention here claimed is, in the 
invention of a new and rather complex. 
chain, which will unite the qualities of 
convenience and durability. This chain 
is compofed in each link, of a {quare nut 
with projections at each extremity, upon 
which two plain chain links hock on, and 
which are confined by keys over the whole, 
which fcrew to the nut and keep all tight. 
he nut and {mall links may be made of 
caft iron, the keys are wrought. 
‘The chain, when in motion, revolves 
round a wheel, at the extremity of which 
is an iron plinth which is furnifhed with 
alternate depreflions, each of which cor- 
refponds with a projeétton in the nut of 
each link of the chain, whereby the chain 
anc the wheel run upon each other, in the 
fame manner as two wheels work in the 
New Patents lately Enrolled. 
) 
[May 3, 
other, and with the fame effe&. By this - 
method much of the friétion,. often necef- 
fary to work wheels by a common rope- 
chain when ftretched tight, is faved, and 
lefs adjuftment required; and therefore 
fuch a contrivance as the prefent may be 
adopted, where a great poweris to be. 
ufed, as in cranes, chain-pumps, turning 
lathes, and the like. 
MR. JAMES YATES, for a METHOD of mul- 
tiplying ENGRAVINGS or CHASINGS, og 
all KINDS of METAL, 
A Patent was granted to Mr. JAMEs 
Yares of Bordfley, near Birmingham, 
Brafs-Founder, for a method of multiply- 
ing engravings, or chafings, on all kinds 
of metal. In this contrivance the defign 
is engraved on a folid block of fteel, copper, 
or any other metal, which is then fixed 
in a die of metal, which has a projeting 
ring or collar round it, fo as to forma 
kind af difh which rifes above the engraved 
furtace. A block of metal is then com- 
preffed upon the engraving with thin 
plates of any foft metal interpofed, and 
the whole laid under a ftamping-prefs, by 
which a perfect impreffion is made from 
the engraved block. ‘Thin plates of metal 
are then ftamped, and the raifed fide of 
the impreffion is fitted with metal or 
cement to a requifite thicknefs, fo that 
the reverfe fide has the appearance of the 
original engraved block or pattern. 
— aa 
MESSRS. TURNERS for PORCELAIN. 
A Patent has been granted, dated 
January f80o, to WILLIAM and Joun 
TuRNER of Lane End, in the county of 
Stafford, Potters, for the introduétion of 
a_new material in the manufacture of Por- 
celain and Earthen ware. 
This material is known in Stafford- 
fhire, by the names of Tabberner’s Mine 
Rack, Little Mine Rock,-and. New Rack; 
and is generally found in the coal-mines in 
this part of the country, lying between a 
hard marle and an iron ftone-rock. It is 
of a grey or afh-colour, but becomes 
whiter by drying; and when burnt ina 
potter’s oven, it aflumes a very ppre 
white, without undergoing fufion. Ie 
contains filiceous, argillaceous, magnefian, 
and calcareous earth, along with water. 
This material is firft ground in a potter’s 
fiint-mill to a very fine powder, but with- 
out any previous calcination; then dried 
on a flip kiln, and afterwards mixed with 
an equal! proportion of Cornith growan, (or 
porcelain clay), prepared in the ufual 
manner, by being calcined, san and 
it Oi | Fied, 
