Roman fuse

Bombshells are shot from mortars by means of a charge of black powder and burst high in the air with the production of reports, flashes, showers, and other spectacular effects. The smaller ones are shot from paper mortars the larger, most commonly from mortars of iron. In the past they have often been made in a spherical shape, wood or paper or metal hemispheres pasted heavily over with paper, but now in this country they are made almost exclusively in the form of cylinders. For the same caliber, cylindrical bombshells will hold more stars or other display material than spherical ones, and it is much easier to contrive them in a manner to procure multiple bursts. The materials of construction are paper, paste, and string. The shells are supplied with Roman fuses timed to cause them to burst at the top of their flight. The success and safety of bombshells depend upon carefully constructed fuses. 

The larger Roman candles are htted with plastic end-caps in the obvious interest of waterproofing, and the fuses are extended to include a piped match and a delay fuse. Display hreworks are often arranged as fans on a wooden framework (Figure 8.4) or wrapped as bundles with an interconnecting fuse. 

BOMBETTE A Combination of candles and/or shells packed in a box and fired by interconnecting fuse or a mini shell found as a component of a Roman candle, mine or shell. 

The Hungarian soda has been known from the time of the Roman dominion as a product of the efflorescence of the soil. The crude soda or szekso is collected by scraping, and sold to the refiners, who lixiviate it with water evaporate the soln. to dryness and fuse the mass. When cold, the product is broken up and marketed. It is used locally at Szegedin in the manufacture of soap. J. Moser has published an analysis of the raw material, and S. Sehapringer, two analyses of the Hungarian soda. The former s analysis is ... 

Evans, D.F., Yamauchi, A., Roman, R. and Casassa, E.Z. (1982) Micelle formation in ethylam-monium nitrate, a low-melting fused salt. /. Colloid Interface Sci., 88, 89-96. 

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