Year: 1862

need alteration; but in most cases it is We
ry slight. 1t is common, believe, to put
on an outside tube 10 the burner; but when
tins does not fiji tight, or does no, 60 quite
down to the bottom. the turpentine that
oozes out between the two tubes, will often
take lire, and the lamp must be put out.
nnd that, for burning. turpentine, the
height OF the burner should be such that
from the top Of the tube to the top of the
dome-llke cap should. in lamps that have
ihree rows OF air holes, be Just three-eights
oi an inch or harsbreadth less; (; and in
those that have one row Of holes. or sli,s,
around them four and half sixteenths of
an'Inch. The former have little arrange
ment on the top Of the burner, which for
the sake of convenience, shall call a
oiower, intended to regulate the draft. In
TINS class OF lamps the distance between the
top OF the burner and the top Of the cap.
can be most easily regulated by depressing
the latter around the base of the dome.
Any person can do this as well as the most
accomplished lamp manufacturer. The
process is this: Take small stick and
notch It just three -eishts Of an inch from
the end. Then lay the cap on a board,
aud with the claw end Of hammer, strike
equal and gentle strokes just at the base Of
the dome, turning i the while with the
other hand, So as to depress it equally all
around, at the base of the dome; while the
outer edge, on which itrests, remains of its
former height. A simpler plan is to bore
hole with an auger or bit in the end Of
piece OF firm wood. that will just fit over
the dome, and then cut down the outer
edge to One-sixteenth oil an inch in thick
ness; and placing this over the cap. depress
It, as above, with gentle strokes OF ham
mer. After every few blows the cap should
be put on, and the notclled stick inserted
at the opening, till it is ascerlained that
the distance between the top Of the burner,
and the top Of the dome corresponds to that
indicated by the notch.


As the other class of lamps would. in
general, require greater depression than
the caps would we'll admit of, the distance
is best regulated by heightening the burner
with an outside tube, well soldered, and
grinding or filing It down exactly equal,
tl'l the distance shall be just four and half
slxtepnths of an inch, between Its top aud
the top of the dome.


AS the btower answers valuable purpose
in regulating the flame of the lamp, II would
be we'll TO have one made. though not abso.
lutely necessary. Any timer could easily
make one to fit the tube, taking care TO
rivrt il, as soder.on the biower will not
stand the heat of the fame, even though il
does so perfectly on the burner.


Now as 10 burning material. have
tried the turpentne Of the shops, and tur.
pentine thoroughly washed with sofa ley,
and the ley Of ashes, bpth cold aud boiling,
and lind it always attended with this seri-
Gus Inconvenience, that the wick has every
few minutes to b. turned up, (unless the
turprntine be- remarkably pure and needs
at least every hour to be put out and snuff
fed. Alter many trials, wa led to dstil
small quantity 10 glass flask, and find
the distilled turpenine to be complete
success. have been writing by lamp
giving light fully equal to gas; aud though
burning two. three, or even four hours, II
does NOT need once to be snuIled, nor even
once to he turned up. or touched or troubled
10 any wav. Every one who has seen or
tried il, pronnunces the distilled turpentioe
- the alterA Lamp. TO be fully equal to the
very best Kerosene ever introduced into the
market. IL is not explosive; that | have
fully tested nor dangerous unless the lamp
bebroken. tits less inlammable than com.
mon turpentine, good deal Of rosin being
distilled out Of il and compared with burn
ing luij, So extensively used few years
ago, It IS as harmless as dove. About one
gallon 10 every eight, ten or twelve, accord
ing TO the purity or impurity Of the turpen'
tine, would be lost in re.distilling. Tie
project Of further dstillation has most
offensive smell, and will not mix with the
turpentine, but sinks TO the bottom. II is