Meal powder

Rasanz, /. flatness (as of a trajectory), rasch, a. quick, brisk, swift, rapid, prompt. — rascher SatZ Pyro.) meal-powder composition. 

Meal Powder (Meal Black Powder). The finest granulation of BkPdr procured for military use. 

Pulverin. French for meal powder. A special, finely pulverized BlkPdr consisting of K nitrate 75, S 12.5 and charcoal 12.5%, prepd by rolling the ingredients with Pb or lignum vitae balls in a hardwood barrel. It has been used in pyrotechnic applications... 

A bundle of such tubes is then inverted such that an explosive charge consisting of fine grain gunpowder and mealed gunpowder can be loaded in. After this a length of Bickford-type safety fuse is glued into the top of each loaded tube. Finally a mealed powder primer and blue touch-paper are applied to the fuse end. 

CHINESE EIRE A pyrotechnic composition based on meal powder, iron hlings and charcoal which is designed to produce visual effects including sparks. 

MEAL POWDER A vcry fine particle-size gunpowder that is used for priming and making quickmatch. 

A. Composizioni a luce gialla per stelle (Compns for yellow light stars) a) NaN03 74, S 8 A1 18% b) KN03 14, NaHC03 5, pulverin (meal powder) 23 shellac 6% (Izzo, p 204)... 

Reilly (Ref 1) describes a gray mixt made by mixing 7 parts of meal powder with 100 parts of sulfur, and is mostly used for the manuf of fire balls (used in war). These consist of twill bags, charged with compressed gray mixture, which is filled into them with the aid of spirit they are fired by means of a composition fuse. Gray mixture mixed with antimony sulfide is used for torches. 

When mixing the three ingredients to obtain mealed powder, wooden drums 1.5-1.7 m dia. are used in a drum, provided with wooden humps. The humps enable the drums to be rotated with a speed of 17-19 r.p.m. without them the speed would... 

Display Rocket. It is a rocket used for pyrotechnic display. It may be constructed using a cardboard case with a chamber in the forward end separated by a plug of clay or other material thru which a piece of quick match passes. The chamber is filled with black powder, and colored light compositions shaped in the form of stars, primed with mealed powder. The tail end of the rocket contains a propellant and a guiding stick. When the rocket is shot into the air. and teaches its maximum height, flame from the propellant is conveyed by quick match to the forward section, igniting... 

Corning Mill Dust. This is also called meal powder, or by the Fr pulverin. Corning mill dust is the finest and the most intimately incorporated BkPdr dust remaining in the mill after the "corning" or granulating operations. Various types of machines are used to manuf granulate BlkPdr, such as "Wheel Mill "Stamp Mill" illustrated by Davis (Ref 2), and "Corning Machines" illustrated by Marshall (Ref 1)... 

Corning meal dust is used in the manuf of fireworks fuse powers. For certain purposes, some manufacturers find it is superior to other kinds of meal powders... 

Figure 19. Stamp Mill for Making Black Powder. (Courtesy National Fireworks Company and the Boston Globe.) This mill, which makes powder for use in the manufacture of fireworks, consists of a single block of granite in which three deep cup-shaped cavities have been cut. The stamps which operate in these cups are supplied at their lower ends with cylindrical blocks of wood, sections cut from the trunk of a hornbeam tree. These are replaced when worn out. The powder from the mill is called meal powder and is used as such in the manufacture of fireworks. Also it is moistened slightly with water and rubbed through sieves to form granular gunpowder for use in making rockets, Roman candles, aerial bombshells, and other artifices.

Common fire meal powder 16 parts, coarse and fine charcoal 5 parts. 

Blue fire for cascades meal powder 16 parts, saltpeter 8, sulfur 12, and zinc filings 12 parts. 

Fixed star saltpeter 16 parts, sulfur 4, meal powder 4, and antimony (sulfide) 2 parts. 

Silver rain for a turning sun or fire wheel meal powder 16 parts, saltpeter 1, sulfur 1, steel filings 5 parts. 

Green fire for the same meal powder 16 parts, copper filings 3 parts. 

Composition for lances. Yellow saltpeter 16 parts, meal powder 16, sulfur 4, amber 4, and colophony 3 parts. Rose saltpeter 16 parts, lampblack 1, meal powder 3. White saltpeter 16 parts, sulfur 8, meal powder 4. Blue saltpeter 16 parts, antimony (sulfide) 8, very fine zinc filings 4. Green saltpeter 16 parts, sulfur 6, verdigris 16, and antimony (sulfide) 6 parts. 

Lampblack stars burn with a rather dull soft light. Discharged in large number from a rocket or aerial shell, they produce the beautiful willow-tree effect. They are made, according to Allen F. Clark, by incorporating 3 pounds of lampblack, 4 pounds of meal powder, and 2 pound of finely powdered antimony sulfide with 2 ounces of shellac dissolved in alcohol. 

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