Bera 
[April 1, 
PATENTS LATELY ENROLLED. 
=e 
Rik. JOHN MURRAY’s and MR. ADAM AN- 
DERSON’S (EDINBURGR), for a Portable 
Stove or Furnace. ; 
\HE object of this invention is to dis- 
"r tribute the heat more equally than 
can be done by stoves now in common 
use. The stove may be manufactured 
from forged, or cast, or plate iron, and 
it is so contrived as to avoid the unplea- 
sant smells which are often produced by 
common stoves. It is moreover so con- 
structed, that the air, if necessary, may 
be brought from the external atmosphere, 
so as to produce ventilation as well as 
warmth. It consists of an upright circu- 
Jar stove, such as may he seeu in many 
churches and other public buildings, to 
which is attached a funnel, er chimney, 
for carrying off the smoke; there are 
also registers, ash-pit, grate, &c. as are 
usual in such cases. 2ut this is covered 
with a case similar in shape to the origi- 
nal stove, only much larger, to leave a 
considerable space for the generation of 
hot air, which hot air may, by means of 
pipes, be carried in any direction, so as 
to give an equable warmth to the apart- 
ments into which they are conducted, A 
stove ‘of this construction is said to be 
well adapted to the warming and ventila- 
tion of churches, public rooms, halls, 
stair-cases, and, by means of tubes con- 
nected with it, any apartments of houses; 
and it will also be useful in ventilating 
and heating ships and manufactories, 
drying different articles of manufacture, 
ventilating mines, and for other pur- 
poses. 
= 
MR. JOHN MANTON’s (DOVER-STREBT,) for 
an improved Lock for Guns and Pistols. 
This invention is explained by the 
figures attached to the specification. 
The hammer acts downwards, and opens 
that side of the pan nearest the cock to 
admit the sparks of the prime. The 
hammer returning to its jointing fills up 
the opening inthe pan, and itis furnished 
with a strong steel pan, fastened by a 
stud in the back, and a small screw 
through the hammer. At the end of the 
hammer face, nearest the pan,-is a small 
groove or notch, sunk in the hammer to 
carry off any wet that may come down 
upon. it. Phe hammer is fixed to the 
iate by the same screw that fastens the 
hammer-spring on the inside. The 
‘pole in. the shank of the hammer being 
xrewed, it turns on the hauimer-springs 
which comes through the plate about 
three-eighths of an inch. On the inside 
of the hammer-spring there is a projec- 
tion one-fourth of an inch long, which 
comes through a square hole in the plate 
into a hole m the shank of the hammer, - 
and forces it to return to its jointing with | 
the pan, when the lock is brought to half= 
cock. The cock is flat on the inside, and 
is barely one-eighth of an inch thick. It 
passes between the plate and the ham- 
mer when it comes down. The jaws 
project outwards to answer the hammer. 
A bulge is left on the breast of the cock 
to render the fitting of the squares of the 
tumbler more strong and perfect. When 
the lock is struck down, the flint comes 
in contact with the hammer-face, near 
the end, and forces it down sufficiently to 
admit the sparks into the pan, The in- 
side of the pan is round, and the same 
size from end to end. About one-third 
is cut out to receive part of the hammer. 
The main-spring has a stud like others. 
The end of the stud side is bevelled to 
fit under the end of the nib, by which it 
is prevented from rising. The crane of 
the tumbler has a roller in the end, on 
which the main-spring acts. The bridle 
has a strong leg on the inside, with a 
round *stud, which fits into the plate 
near the searnose, to prevent it from 
twisting when the tumbler comes in cone 
tact with the eye tostop the cock, The 
sear acts on the tumbler in the usual 
way, but the shank is nearly vertical 
instead of horizontal. The sear-spring 
acts on a shoulder, left on the outside of 
the sear for that purpose, and. forces the 
searnose to the tumbler. The pan of 
this lock is primed. from the touch-hole __ 
by the compression of the air in loading. 
The following are described as the 
principal advantages derived from this 
lock : 
plate at top, protects the prime from wet. 
2. The hammer opening downwards, and 
the flint acting im a direct line with the 
pan, the sparks communieate quicker to 
the prime. 3. The hammer returns to 
its jointing with the pan when the lock ts 
brought to halfcock without any additi« 
onal trouble to the user. 4. The low- 
“hess and compactness of the lock alto- — 
gether render it much less difficult to 
protect from wet, and much less liable — 
oe. oer ee eee a 
1. The pan being solid with the F 
bs 
H 
: 
to accidents by catching, in cover shuot= 
ing, than locks of the present construc- 
tion, 
