Spir′it-lamp.
A lamp burning alcohol.
Used for many purposes in the arts where heat rather than light is required.
The blast spirit-lamp (
A,
Fig. 5423) consists of a vessel
a for containing a mixture of alcohol and turpentine, and a cylinder
b containing an argand wick supplied with the mixture through the pipe
c, and subjected to a blast of air from a pipe
d, which comes up through the table
e. The blast-pipe can be fixed at different hights, and is supplied with jets of different sizes, to suit the regulated supply of spirit and the hight of the exposed portion of the wick.
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2277]
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Spirit-lamps. |
The
Russian spirit-lamp (
B C) consists of an exterior cylinder
a, containing a shorter interior annular cylinder
b, having a bottom
c, through which passes the pipe
d, which constitutes the only communication between the interiors of the two cylinders.
The outer end of this pipe terminates in a fine orifice.
The cup
e is then filled with alcohol or pyroxilic spirit, which is poured into the chamber
b through the nozzle
f, afterward stopped with a cork.
An equal amount is then poured into the outer cylinder
a and ignited; this soon causes the spirit in the chamber to boil, the vapor is forced through the tube
d, and, being set on fire by the flame, produces a continuous column of burning vapor 6 inches high, which will last from 12 to 16 minutes. The cup
e also serves as a cover to the lamp, and is used as an extinguisher.
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Davis's level and inclinometer. |
