Pyrotechnics: The History and Art of Firework Making — John Shaqi
Pyrotechnics: The History and Art of Firework MakingBrock, Alan St. H. (Alan St. Hill)
History
Pyrotechnics: The History and Art of Firework Making
Brock, Alan St. H. (Alan St. Hill)
Fireworks
At weddings, crackers are largely used under a variety of names, such
as Vengagvedi, Gola, Pataka or Koroo. To-day these are simple crackers
filled with country-made gunpowder or the imported Chinese crackers.
Formerly almost the only composition used was chlorate of potash and
one of the sulphides of arsenic. A favourite form consisted of a small
quantity of the two ingredients put together unmixed into a piece of
rag with some small stones or grit and tied. The resulting fireworks
were similar to the “throw-down” crackers sold in this country.
Owing to the very large number of accidents caused by the casual
methods, both in manufacture and use, with this highly sensitive
composition, H.M. Chief Inspector of Explosives for India endeavoured,
in 1902, to secure its prohibition, as was done in this country in
1895, but it was not until 1910, when it had been established that
this composition was being used by anarchists, that it was finally
prohibited.
The most successful effect produced by Hindoo pyrotechnists is the
“Tubri.” The composition is here known as Chinese fire, a mixture of
charcoal, saltpetre, sulphur and iron dust, charged into either bamboo
tubes or earthen pots.
[Illustration]
It is a common practice to fix a pot at either end of a long bamboo,
which is whirled quickly about by a performer; the result produced is
quite good, but seems rather to come under the heading of juggling than
that of pyrotechnics proper. As the pots are theoretically the wrong
shape for such a purpose, that is to say, a large mass of composition
is burning through a narrow orifice, premature explosions are frequent.
This want of theoretical knowledge is noticeable throughout, but such
incidents seem to be appreciated as part of the show.
Another use of the earth pot is the “burusu,” a kind of red flare; the
composition used being sulphur, saltpetre, and nitrate of strontia.
Flare compositions are also used loose as in England, and are known as
“chandrajota” or “mahteb.”
Abusavanani or Hawai, that is to say, rockets, are now made similarly
to those manufactured in Europe except a bamboo case is most generally
used, but formerly chlorate of potash and orpiment seem to have been
employed for this purpose.
The firework shell under the name “out” is also manufactured very much
as in this country, except that the range of effects is very limited,
simple coloured stars being almost the only “garniture” used.
Public-domain text, read in full here on John Shaqi.
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