Patent blasting powder

Patent Blasting Powder. Early safety mining expl, consisting of BlkPdr to which ordinary salt was added to lower the deflagration temp Ref Daniel (1902), 601... 

Kolf s Blasting Powder. Ger mining expl patented in 1892. A mixt of equal parts of NC, Nitrolignin Nitrostarch 50, Nitrosugar 38,... 

Next Schwanke [78] published a patent in which he suggests the impregnation of woodmeal with a solution of calcium nitrate. The mixture is dried at temperatures from 90 to 130°C and compressed into tubes (resembling those of black blasting powder). 

Safety" Blasting Powders. Expls, also known under the names of Carbazotine and Inexplosible Cahuc, patented in Engl and Fr between 1873 and 1877. Some were manufd in Engl as late as 1897. They contained K nitrate 56 to 70, sulfur 14 to 12, lampblack 3 to 5, sawdust or tanbark dust 27 to 13, and iron sulfate 5 to 2%... 

Schaffer Powder. Blasting powder patented in Engl in 1863 and 1866 contg K and Na nitrates, sulfur, charcoal and Seignette s salt (K-Na tartrate)... 

Trets Blasting Powder, patented in England, consists of 52.5 per cent, of Chili soda saltpetre, 20 per cent, of sulphur, and 27.5 per cent, of spent tan. 

Pyrolitfu This blasting powder, patented by Wattlcn and used for olasting hard rocks, such as granite, etc., consists of 12.5 parts by weight of sawdust, 67.5 of saltpetre, and 20 of dowers of sulphur. 

Among more than thirty patented compositions for blasting powder are the following ingredients. The specific combination in each case might be given would -space permit. 

A New Blasting Powder patented in Oermany by 7%. MartiTisenf consists of ... 

Newton Powder (Saxifragine), Belgian blasting expl patented in 1862 contg Ba nitrate 77, charcoal 21 K nitrate 2%... 

An explosive insensitive to mech and rifle bullet impact, but detonable by a blasting cap, is claimed in a US patent. It consists of Hydrogen Peroxide, water glycerol (Ref 3) Another patented high explosive composition contains powdered metal and Hydrogen Peroxide, eg 29.7% powd B 70.3% H202 (Ref 19)... 

Jones Blasting Explosives. Jones patented the following compn chlorates such as NaC103 are used with finely divided carbonaceous substances the o-isomer of nitrotoluene, which-keeps the mixt plastic. The chlorate may be mixed with a powdered carbonaceous absorbent material such as sawdust a liq mixt of o-nitrotoluene melted TNT Ref L.T.W. Jones, USP 1820567 1820568 (1931) CA 25, 5771 (1931)... 

Amidon (Poudre h t )f a blasting expl patented in 1384, consisted of black powder mixed with 2 to 5% of starch (Compare with Starch PowderM) Ref Daniel(19U2), 21... 

Anbenyoku. A Japanese expl An 55 DNB 45% used during WW II as a bursting chge in some projectiles. It was manufd at Nanman Arsenal,Manchuria,under the name of Sho-benyaku(Refs 1 2). A blasting expl also called Anbenyaku was patented after WW II by Watanake. It consisted of AN 71.7, NG 8.0, CC 0.3 Sl powdered seaweedfRef 3)... 

Cork Powder Explosives. Aubert Nauckhoff (Ref) patented the addn of cork powder to gelatinized expls, such as mixts of NC NG. The cork permanently retains a certain quantity of occluded air and thereby ensures rapid transmission of deton thruout the expl. One example of such a blasting expl consists of NG 56, NC 2.3, NB (nitrobenzene) 1.7, AN 35 cork pdr 5%... 

Ricker and Spence Powders. Blasting expls based on K chlorate patented in Engl in 1862 by Ricker and Spence. Other ingredients could include K, Na or Pb nitrates, charcoal, algae (partly calcined), Na bicarbonate, wheat flour, pulverized bark and dried coffee residues See also under this title in Vol 2, C206-L Ref Daniel (1902), 683... 

Roger Powder. Blasting expl patented in Engl in 1870, contg 45% K chlorate plus materials... 

Starch Powder. A blasting expl patented in 1888 by Fitch and Reunert. It was prepd by incorporating 1 Op of NG into a mixt consisting of Na nitrate 73, charcoal 12, sulfur 10, and starch 5%... 

Tarnovskl Explosives. Blasting expls patented in Fr in 1913 (FrP 465082) and claimed to be more powerful than some NG Dynamites. A typical formulation consisted of Amm perchlorate 67, TNB 13, A1 powder 10 and wood-meal 10%. As these expls developed HC1 gas, they could be used only in open blasting operations. If, however, part of the perchlorate was replaced by alkali or alkaline earth nitrates, the expls would be suitable for use in mines Ref Colver (1938), 739... 

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