1807.] New 
There is an opening made to allow the 
point to mark upon the paper. The 
edges of the frame form and tlide in a 
dovetail, moveable upon the fwinging 
Board, and kept in a proper fituation by 
{pring, On the back of the beard 13 
affixed a weight with a hook, to which 
rs attached a fpring, forming a pulley, 
ferving to prevent the point from acting 
upon the paper when not wanted. The 
machine is fixed either toa partition. in 
any room, or to atable, or other ftand. 
The inftrument is perfect, 4, when all 
the parts are firmly connected, ‘and with 
out fluétuatian ; 2, when the ball and 
fockets are truly ‘circular, and move 
ealfily; 3, when the rod paffes truly 
through the centre of the ball; 4, when 
the rod is perfectly ftraight ; in, turn- 
ing the rod round in ‘the fockets, the 
tracer and point in the two ends of the 
rod muft remain in the centre = to attain 
this there muft be an adjuftinent of 
tcrews. Fot taking profiles, before the 
inftrument is fixed to the ey the 
height mult be taken from the bottom to 
the middle of the face of a perion fitting 
upon a chair, and that height transferred 
upon the partition in the place where'the © 
fockets are fattened: the perfon’s head 
mutt reft againft a piece of wood lined 
with leather. The tracing is began from 
the back, and the fcrew mutt form a 
right angle with every part of the face 
in patling over it; ih confequence of 
which the rod muit be turned round in 
the jocket, and the cutter, previonily 
fixed in the rod, will cut out the profiles. 
By ineans of fame finall variations, pic- 
tures and land{fcapes are traced. After 
this full deferiptseon, we are much in 
doubt whether a mere mechanical pro- 
hile is the bett poffible. 
ee 
Dr. Carey has, we underftand, taken 
eut Patents for the following inven- 
tions: 
1. A ciftern and apparatus, by means 
of which a fire breaking out in a ware- 
houfe, &c. immediately prod ucesa fhower 
ef water te extinguifh it. 
Patents lately Enrolled. 
259 
2. A ciftern, with an apparatus of a 
different kind, by means of which a 
fhower of water is brought down to 
quench fire ina chimney, on fimply 
rae a wire over the mantle-piece. 
3. A gridiron, which pes the 
chunney from dangér of fire, and (with 
the additional advantage of favoury cook 
ery) faves the meat from being tinged or 
frnoked. 
4. A prefervative lantern for nurferies, 
fables, &c. fattened with a tmall pad- 
lock, which, by means of a bit of paver, 
Is effetually fecured againtt being open~ 
ed without certain detection, ft is ap= 
pheable to all the purpotes of a common 
padlock, and may, by the aid of a fimple 
contrivance, be fattened in a moment, 
and without injury, to the Rel hole of a 
drawer or door, {G that neither key nor 
pick-lock can be put into the hole with- 
out difcovery. By another fimple con- 
trivance, it will prevent fraudulent ex- 
changes of articles fent by carriers, or 
purchafed at market. _ 
5. A fire-c Le to extinguifh fire in a 
lady’s clothes, protect a perfon from 
the flauses in Gee from 3 houfe on 
fire. 
6. A foot-trap, or ftrainer for the 
finoke, to prevent the accumulation of 
{vot in chimueys. 
7. A foot-trap regiter-ftove, of two 
different kinds : alfo-a regitter- top, with 
a toot-trap, to be fixed on a commor 
ftove. 
8. A water-trouch in the back of 2 
chimney (kept conftantly full by means 
of a-ball-cock) to catch foot, and pre- 
vent the danger of fire. 
9. An elezaut japanned fire-{creen, 
anfwering allo the purpofes of a aes 
guard, a chimney-board, and an extin- 
guither for a chimney on fire. 
1Q. A chinmey -damper, to extinguifh 
fire in @ chinney by intereepting the 
draught of air. 
11. A water-candlettick and nig lit. 
hght, both ef improved conftruétien. 
LIS 
