Since the introduction of the process of gas-singeing in finishing
textiles, many improvements have been made in the construction of the
machines for this purpose as well as in that of the burners, for the
object of the latter must be to effect the singeing not only evenly and
thoroughly, but at the same time with a complete combustion of the gas
and avoidance of sooty deposits upon the cloth. The latter object is
attained by what are called atmospheric or Bunsen burners, and in which
the coal gas before burning is mixed with the necessary amount of
atmospheric air. The arrangement under consideration, patented abroad,
has this object specially in view. The main gas pipe of the machine is
shown at A, being a copper pipe closed at one end and having a tap at
the other. On this pipe the vertical pipes, C, are screwed at stated
intervals, each being in its turn provided with a tap near its base. On
the top of each vertical table the burner, IJ, is placed, whose upper
end spreads in the shape of a fan, and allows the gas to escape through
a slit or a number of minute holes. Over the tube, C, a mantle, E, is
slipped, which contains two holes, HG, on opposite sides, and made
nearly at the height of the outlet of the gas. When the gas passes out
of this and upward into the burner, it induces a current of air up
through the holes, HG, and carries it along with it. By covering these
holes with a loose adjustable collar, the amount of admissible air can
be regulated so that the flame is perfectly non-luminous, and therefore
containing no free particles of carbon or soot. The distance of the
vertical tubes, C; and of the fan-shaped burners is calculated so that
the latter touch each other, and thus a continuous flame is formed,
which is found to be the most effective for singeing cloth. Should it be
deemed advisable to singe only part of the cloth, or a narrow piece,
the arrangement admits of the taps, D, being turned off as
desired.--_Textile Manufacturer_.
[Illustration]
* * * * *