1800. | 
form the fegment of a large circle, and 
are fupported upon iron pillars. A kind 
of circular focket, fitting upon the top of 
the pillar, and proje&ting from it on every 
fide, forms the conneétion and fupport of 
the cieling-plates upon the pillars, and 
ferve as the bafis of the pillars of the up- 
pet ftory if requifite. 
EE 
MR. WEEKS, for @ TANNERY APPARA-= 
se 
A Parent has been granted to Mr. 
JosepH WeEEKs, of Plympton Maurice, 
Devon, tanner, for an apparatus or fet of 
m2chines for a tannery. 
This fet of machines confits, firft, of 
a large cog-wheel, turned by horles, of 
the ufval conftruction, which communi- 
cates power by means of horizontal tpin- 
dles to three diftin& fets of machinery. 
One of theie is a double pump, cf the 
common conftruction, with a fet of pipes, 
with ftop-cocks, to be employed im draw- 
ing the ooze liquor from the different pits, 
&c. Another machine 's aniron cylinder, 
fomething like a wool carding machine, 
furnifhed with projecting points, hat are 
to tear and divide in fmall pieces the bark 
employed in this manufactory. The cy- 
linder, as it revolves, almoit touches an 
iron roller benea’h, and the bark pafling 
between the two, is reduced almo! to 
powder, and when {mall enough, falls 
throewgh an iron riddle, which receives all 
that the cylinder delivers. The third ap- 
paratus is a machine for paring and {crap- 
ing the hides, which is done. in the com. 
mon way, by manual labour. The pa- 
tentee performs it by a cylinder, fet with 
knives, fomething like a reller for crimp- 
ing linen, revolving on_its axis, whilft the 
hide is i rongly ftretched on a board, and 
by the fame power applied from the end 
of the axis of the cylinder, is prefented in 
all its parts fucceflively to the blades that 
are fet round the cylinder. 
~~ 
MR. SMART, for a “eTHOD of making 
HOLLOW MASTS, YARDS, &c. 
A Patent has been granted to Mr. 
GeorGE SMART, of Camden Town, 
Middlefex, for a method of combining 
maits, yards, bow!prits, éc. hollow, 10 
as to give them lightnefs and ftrength. 
The principle of this invention, which 
requires a reference to the plates to be un- 
deritood, confifts in building up, or put- 
ting together, a great number of pieces of 
timber of {mall dimenfions, and combining 
them by means cf morticing, dove- tailing, 
&c. fo as to produce an equal bearing on 
every part, and coniequently the effect of 
a folid piece. Alarge mait is made by 
New Patents lately Enrolled, 147 
flitting down a long fpar longitudinally 
into four parts, placing each of thefe a 
equal diftances frcm each other, and fe- 
parated by the diflance requifite for the 
dimenfions of the msft, and filling up the 
vod fpaces by planks m rticed by very 
ingenious carpentry work, into eaclvother, 
into the pieces of the fpar, and isto crofs 
pofis different ‘ly combined, which are fet 
at intervals acrofs the centre of the maf. 
When compleat, it has much the appear- 
ance of a fingle piece, but may be made fo, 
that the top-gallanr maft may let down 
in the top-mali, and thefe again into the 
lower-maft, a 

MR, SANDFORD, for manufacturing 
BRICKS, VILES, Sec. 
AParen vhas been grantedio Mr.Isaac 
SanDFORD, of Harttord, in Conneéticut, 
Noria America, fora method of manutac- 
turing bricks, ale es, and poit ry-ware, &c, 
The principle ef this invention is to 
temper the clay, when ready fer the 
moulds, by meaxs of machinery, inftead 
of manuai labour, and to deliver it into 
the moulds, by. a confiderab'e mechanical 
force; which fhall fave time and labour. 
The machine is a conical tub, with the 
fmalleft end downwards, and firmly fet 
wpon an upright frame. A fpindle, or 
thaft, is placed in the centre of the tub, 
extending from the bottom to fome height 
above the tub. ‘This latter projecting part 
is furnifhed with a horizontal lever, by 
which the {pindic is made to revolve with- 
in tbe tub. The part contained in the 
tub is fet with flyers, each of which is 
the fection of a {crew, and by revoiving, 
acts as a force on the contents of the tub, 
which is the clay. By the conftruétion of 
the flyers, and the angle at which they are 
fet, the clay, when once at the bottom, 
cannot rife again. The clay, in its paf- 
fage, becomes fufficiently tempered, and 
is {crewed out of the bettom of the tub 
with groat force, by means of the fpindle, 
into the moulds that are placed beneath the 
tub, on the fame platform which fupports 
it. The moulds are fet in a frame, and 
if for bricks, are regularly withdrawn 
when filled with clay, and others come on 
in fuceeflion, by means of a rack to which 
the mould-frames are fattened. 
—— aR ae — 
MR. PALMER, for LARGE ACCOUNT 
BOOKs. 
A Patent has been granted to Mr. 
EBenezer PaLMeERr, Kationer, Cheapfide, 
London, for making the largeft merchant's 
account books, to open fo wide as to admit 
of being written in clofe to the back,upona 
principle entirely new, and which in@ead of 
U 2 weak. 





