148 
jeting inte the chamber in the form of a 
cone, and thereby preventing the fhot 
from lodging, fo as to make the gun mifs 
er hseg fire; the touch-hole alfo commu- 
nicates with the powder in the pan through 
the anti-chamber, which is to conftruéted, 
that in damp weather the gun cannot hang 
er mils fire. The infide of the breech- 
ing which contains the charge is nearly of 
the thape of anegg, and fo gonfructed 
as to permit the powder to remain always 
hoofe. Jt is eafier cleaned, and has the ad- 
vantage of hghting the powder much 
guicker, and in amore perfect manner, 
than any breeching heretofore ufed. The 
locks of adouble gun are nearer together, 
vehich renders it more convenient to cock 
the left lock. The exterior part of the 
breeching being floped in an obtufe angu- 
lar direction, conducts the eye quicker to 
the object, and makes the priming in the 
pan tend more tothe anti-chamber. Guns 
on this principle are faid to be ftronger 
than others: they will throw the thot 
more regular, with greater velocity, and 
are not fo liable to loofe their fhooting. 
Fhe jaws of the cock hold the flint in 
an oblique direGlion, which gives it more 
fri€tion, increafes the quantity of fire, 
and throws the fire clofe up to the touch. 
hole. The web of the pan is rounded, 
which prevents the powder from lodging, 
fo as todisjoint the hammers. “The pan 
is eafier cleaned, the priming always kept 
dry, and the pan not liabletalofeit. The 
reft for rifles, which does not exceed two 
inches in length; and one ounce in weight, 
may be ufed ftanding or in any other po- 
fition. A very heavy gun may be elevat- 
ed or deprefled with ove hand, at plea- 
fure, and at the fame time kept perfectly 
fieady. 
The head of the fhot-belt, which is fo 
conftruéted as to contain various quanti- 
ties of fhot, is filled with accuracy, with- 
out lofs of time or hazard of f{pilling, and 
always contains a charge, as occafion 
may require, ready to load with. This 
improvement on the fhet-belt is equally 
applicable to the powder-flafk. 
Obferwations by the patentee. —Thele 
guns have a triple advantage, viz the 
breeching, locks, and reft. In loading 
they prime themfelves, owing to the clole 
connection of the touch-hol2 with the 
anti-chamber, which is an advantage very 
fuperior to the guns on the old principle, 
they being made with wide exterior touch- 
hol<s, which muft evidently tend to the 
diminution of the ftrength of the charge. 
The powder-flafk is made to contain the 
dame quantity of powder as the chamber 
New Patents lately Enrolled. 
[March f, 
of the gun, which confequently brings 
the powder into contact with the wadding 
or fhot, and prevents the air from lodg- 
ing fo as to diminifh the effect of the 
powder. In loading a double gun on the 
old principle, pellets of fhot are apt to 
fall into-the cylinder hole of the breech of 
the unloaded barrel, and ftop the commu- 
nication between the powder in the pan 
and the charge. Double guns, accoraing 
to Mr, Willon’s invention, are entirely 
prevented from this inconvenience, by 
having the interior touch hole elevated in 
the bottom of the chamber in a conical 
form, which prevents the pellets from 
lodging on it. 
=a 
MR. ALEXANDER BRODIE’S (CAREY- 
STREET), for his improved Form of 
making Steam-engine Boilers, and 
Steam-boilers for other Purpofes, and 
of confirudting the Flues for conweying 
the Heat to the fame, by which the Con- 
Sumption of Fuel is confiderably leffened. 
The cait-iron boiler may be made of 
any fize, and the caft-iron plates are made 
with flanges, to any fize that may be 
wanted fer the boiler; and put together 
with rivets or fcrews, and nuts and pafte- 
board between the plates; and to prevent 
the boiler from giving. way by force of 
the fteam, there are feveral wrought-iron 
ftays fixed in the middle of the boiler. 
The boi'er fo made ftands upon iron, fo 
that there is f{careely one quarter ef an 
inch but what the fire has its full power 
over the bottom of it. There are two 
fire-places, and the flue rqund is dene 
with brick, according to the height and 
width that may be required. The top of 
the boiler is flat, and covered with brick. © 
a a ee 
MR. Be R. DODD’s (CHANGE-ALLEY), 
for various Improvements in the Con- 
Siru&ion of Fire-places, Ge. 
Thefe improvements confit chiefly in 
refle&tors placed near the grate; they are 
moveable, cr made to flide horizontally 
in grooves, cr on rollers, or otherwiie, 
which will permit them to open at differs 
eat angles, and at various diftances from 
the grate. They may be fixed on hinges 
or otherwife, vertically, to the back of the 
fire-piace ; or they may be united to the 
fides of the Rove or grate.. The: reflee- 
tors may be made either of one entire 
piece, or feparated in the centre, or elfe- 
where, as may be judged to be moft con» 
venient, and they might be fo confruéed) 
as to flide into a recefs formed in the. 
wal], or to flide out, ar turn completely, 
rounds 
