Wheel-case.
(Pyrotechnics.) A stout paper case, similar to a rocketcase or sun-case. It is filled with composition, which is driven into it with a drift, and is tied to the rim of a wheel or rotating piece of fire-works, to which it imparts a circular motion, at the same time emitting brilliant trains of fire. (See wheel, 4.) The following compositions are employed:— Brilliant; 1 niter, 1 sulphur, 16 mealed powder, 7 cast-iron filings. Chinese; 2 niter, 1 sulphur, 16 mealed powder, 4 charcoal. White; 6 niter, 7 sulphur, 16 mealed powder.
Wheelbarrows. |