1823.] 
s sometimes supported by a pointed’ 
stay, or by a broad-ended stay. The 
improved chain consists of links, the op- 
posite sides of each of which are com- 
pressed: or bent inwards, and the sides 
of the link are held firmly together by a 
cross-bar of malleable iron passing 
through a block of cast-iron, which 
eross-bar is welded to each side of the 
link ; and, for the purpose of preventing 
the links from entangling, there are 
sniall projécting parts or protuberances 
on the inner quarters opposite to each 
* other. ‘The block must be about three 
times the thickness of the cross-bar; its 
length about two and a half times the 
length of the said cross-bar; its greatest 
breadth in the middle equal to the 
breadth of the cross-bar, and its breadth 
at the ends about equal to the diameter 
of the iron from which the link is made. 
The improvements consist, first, in 
making a chain of a given size of iron, 
more portable than the chains hitherto 
used for ship cables and . moorings, 
which are made of the same size of iron. 
It may be brought through a smaller 
hawse-pipe, may be handled much more 
conveniently, and with much less dan- 
ger of injary to the hands ; secondly, the 
contiguous links are less liable to en- 
tangle, being prevented by the project-- 
ing parts acting against each other; 
‘thirdly, one link will rarely, if ever, act 
as a receding power transversely on the 
sides of the adjoining link, as is fre- 
quently the case with some of the 
above-described chains; fourthly, it is 
more capable of resisting lateral vio- 
lence, as the cross-bar which is intro- 
duced becomes by the operation of 
welding of one piece with the link, 
thereby preventing the middle of the 
link from distending, whilst the block 
ahrough which the cross-bar is inserted, 
together with the cross-bar, prevents the 
sides from collapsing; the only space 
which is left unoccupied by, the. block 
and cross-bar being required for the 
free playing of the adjoining links; and 
the improved chain will offer less resist- 
ance in getting up the anchor than any 
of the other chains above described. 
i 
Mr. Thomas Parkes, of Fenchurch- 
street, has invented steel mills for 
grinding malt, beans, pease, oats, bar- 
ley, &c. &e. to be worked by hand, 
steam, or any other power. 
The mill in the annexed drawing is 
to be firm to a post, keeping the spindle 
about three fect from the floor, and the 
wheel-end of the spindle about one inch 
‘Monruty Mac. No. 386. 
New Patents and Mechanical Inventions. 
145 
and a half lower than the other. It is 
set by the common setting-pin, to grind 
fine or coarse, as required ; but there is a 
small bouk or ferrule on the, spindle, 
which being fixed close up to the bouk 
of the mill, and fastened with the small 
screw, the setting pin may then be 
turned back two or three notches, so 
that the ball wifl run clear of the pin, 
when the false bouk: will keep the mill 
up to its work, and, by running in the 
manner of ‘a swivel, will cause it to go 
much easier. ~The bushes should be 
oiled with sweet oil.’ There is a slide 
under the hopper, to regulate the feed of 
the mill; and a small door on the side 
plate, to take out any nails or stones 
that may chance to get in. 
Dressing Machine. 
It is advisable not to dress the flour 
until a day or two after it has been 
ground, or at least not until itis perfectly 
cool, otherwise the wire-work of the 
cylinder may clog, as will naturally be 
the case, a little, on first using the ma- 
chine. ‘This must be remedied by ocea- 
sionally brushing the outside of the 
cylinder B with the brush sent, taking 
care not to bear onso hard as to dent the 
wire-work, By raising. up the. iron 
catch, the cylinder will turn round so 
that all parts may be brushed. To re- 
gulate the feed there is a slide within 
the hopper, which may be raised or low- 
ered, and is fastened by means of the 
thumb-scrow at the back, Care must 
be 
