1807.) 
having in it a cavity containing the 
prepared fungus, known by the name 
of German tinder, or common tin- 
der. ‘There isalsoa syringe, which works 
by a piston in the upper part of the staff, 
and by astroke of about twelve inches, 
forces the common air with great velocity, 
and in a highly. condensed state, through 
a small aperture against the combustible 
matter included in the head. The man- 
ner of working consists simply in pressing 
the end of the rod of the charged syriuge 
strongly against the ground, so as to drive 
the air suddenly on the tinder, and the 
cap being without loss of time unscrewed, 
the tinder is found to be. on fire. 
Observation. We leave our readers to 
» Judge for themselves how far this invention 
is likely. to be brought into general use. 
For ourselves, we suspect that the best 
that can be suid of it, is, that it may be, in 
expert hands, an amusing philosophical 
play-thing. 
SF a 
MR. JAMES PEACHE’S (LAMBETH,) for a 
flouting hollow Buoy on a new Con- 
struction. 
The use of buoys is well known, and the 
construction of that now under conside- 
ration, is by pieces of wood longitudinally 
applied to each other, after the manner ef 
Staves; but, instead of making the joints 
to consist of flat surfaces evenly or square- 
ly applied to or against each other, they 
are rabbetted together by making the half 
thickness of cach piece to over-lap the 
other. The faces are to be tarred, and 
epplied to each other, and upon one of 
them is spread a covering of hair, &c. and 
upon this is applied in a melted state a 
coat of pitch and tar, after which the 
joints ate put together, and secured by 
Screws, pins, bolts, and by hoops envel- 
Joping the whole. The heads are put in 
by rabbeting the same in with the staves: 
‘the fitting is made good by several steps 
or successive faces in the joint, between 
which, tar, pitch, hair, &c. are applied, 
and for greater security, there are some- 
times two or even more additional heads 
fixed within the-external heads.. In the 
buoy is fixed a trunk or perforated piece, 
so made as not to allow the waterto enter 
the said buoy without; but to afford a 
passage for a chain, rope, &c. for moor- 
ing. The shape which Mr. P. recom- 
mends as the best for his newly invented 
buoys is cylindrical or prismical, or coni- 
cal pyramidal figures, and when the cross 
Section of the figure is not circular, the 
aunber of sides should be eight. 
2 
- 
. 
New Patents lately enrolled. 
PL 
MR. RICHARD WILCOX’s (LAMBETH,) for 
Improvements on Steam Engines. 
These improvements are on the rotary 
steam-encine, and they consist, exclusives 
ly, in certain parts generally known by 
the name of gates, patlets, valves or cocks, 
which by their particular construction, 
are capable of confining and detaining 
steam, or other elastic or dense fluids be= 
tweeu the said gates, &c. 
‘The steam-engine consists af an outer 
fixed cylinder, and an inner revolvin 
one, each furnished with pallets or cocks 
so contrived, that in passing each other 
they are moved so as to recede from eacta 
other’s way, but in other parts of the 
circle they project so as to traverse the 
Space betwecn the two cylinders, and 
form steam-tight partitions ; one of which 
being fixed, and the other moveable; the 
steam forces the moveable one round, and 
with it the moveable cylinder; the axis of 
which gives motion to the machinery, for 
which the steam engine is erected. Oa 
one side of the fixed pallet is a valve, 
which by a pipe communicates with the 
boiler, and on the other side, is placed a 
second valve which leads to the condenser; 
both of these are worked by methods si- 
muilar to those in common use. The ends, 
of the cylinders are made steam-tight hy 
rings which press the packing against 
them; and the edges of the pailets are 
made steam-right by a hempen cloth 
stulfed or folded together. That part of 
the surface of the cock which comes in 
contact with the revolving cylinder, has a 
groove cut down it, into which a piece of 
metal is fitted, that is pressed against the 
cylinder by screws, cr other means, so as 
to come in close contact. with the revoly- 
ing’ cylinder. “To make the packing 
work well and permanent, a hole is drill- 
ed through the-spindle of the cock, or of 
the pallet, and another from thence ho- 
rizontally to the parts of it in.immediate 
contact with the cylinder, a funnel is 
placed outside, with a pipe from it passing 
into the hole made in the spindle, with a 
‘regulating cock annexed to it, between 
the spindle and funnel, by which the oil 
can be let down to lubricate the several 
working parts. The motion of the oil 
may be made to ascend by drilling a hole 
through the bettom of the cack, and so 
forming a communication by a pipe toa 
cistern of fluid-crease placed at seme 
‘convenient distance above the level af 
the part of the engine requiring to be tu- 
bricated. 
To ¢nerease the power af the engine, 
Me 
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