Century Dictionary and Cyclopedia
- n. In pyrotechnics, a case made of stout paper, filled with a composition, and tied to the rim of a wheel or other revolving pyrotechnic device, to which it gives a rapid movement of rotation while it burns with a brilliant flame.
“One end of the spindle is fined down to take a small pinion, P1, meshing with a large pinion, P2, the latter running in bearings, BG3, in the wheel-case and cover.”
“Where the shaft passes through the upper head of the wheel-case some provision must be made to prevent steam from the first stage escaping.”
“Each wheel is in a separate chamber formed by the diaphragms which rest on ledges on the inside of the wheel-case, their weight and steam pressure on the upper side holding them firmly in place and making”
“This is provided for by carbon packing (Fig. 12), which consists of blocks of carbon in sets in a packing case bolted to the top head of the wheel-case.”
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