DE172869C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 78 c. GROUP

in Berlin.

and ignition charges.

Patented in the German Empire on November 19, 1902 .

The explosiveness respectively. the expression of force of explosives is according to the more recent investigations significantly increased by adding easily oxidizable metals such as aluminum and magnesium, in a finely divided state, which, when the explosives are burned, are at the expense of the same the oxygen it contains, generating large amounts of heat. Further

ίο Experiments have now shown that the physical The nature of the metals has a very important influence on the grade its effect in the explosives compositions and that is especially the one Nature of the metals which these in the recently manufactured metal wools (Journal for applied chemistry 1902, p. 543), is suitable to the expression of force increase in explosives.

These easily combustible and catalytically active metal wools have as a result of their extraordinary delicacy, the large surface and the associated large Reaction surface an effect which is substantially superior to that achieved if you put the same metals in by simple mechanical crushing which uses metals in a compact state, finely divided form.

As can be seen from the table below, a load of 30 g resulted pure Westfalit (95: 5) a bulge of 1290 to 1320 ecm, the same charge from 90 percent Westfalit and 10 percent aluminum powder a bulge of 1740 up to 1800 ecm, when using 10 percent Aluminum wool, on the other hand, has a bulge from 1970 to 1990 ecm.

A load of 30 g of picric acid gave 1300 to 1350 ecm of bulge without admixture, with 5 percent admixture of aluminum powder 1390 to 1430 ecm bulge and when using a mixture of 95 percent picric acid and 5 percent aluminum wool 1540 to 1590 ecm Bulge.

A load of 30 g gelatin dynamite with 10 percent admixture of aluminum * powder gave a bulge from 1880 to 1900 ecm, with 10 percent aluminum wool one from 2120 to 2160 ecm.

Of the great superiority which metal wools have in terms of increasing the Expression of power of explosives compared to the otherwise used fine metal powders can be used both in the manufacture of the actual explosives and in the manufacture of detonating charges make use of primers and detonators.

composition charge Zünd
capsule lead
cylinder Ver
Enough the end
bulge Westphalian (95: 5) 3Og 8g great sand 1290
1320
1320 90 percent Westfalit (95: 5), 10 percent aluminum
minium powder 3Og 8g great sand 1740
'1750
1800 ' 90 percent Westfalit (95: 5), 10 percent aluminum
minium wool 30 g 8 g great sand 1970
1980
1990 85 percent Westfalit, 15 percent aluminum
powder 3Og 8g great sand 1740
■ 1790
1810 85 percent Westfalit, 15 percent aluminum
wool 3Og 8g great sand 2140
2180
2200 Picric acid 3Og 8g great sand I3OO
I34O
I34O
I35O 95 percent picric acid, 5 percent aluminum
powder 30 g 8g great sand I! 39O
I4I0
(1430 95 percent picric acid, 5 percent aluminum
wool 3Og 8g great sand 1540
1550
1590 90 percent picric acid, 10 percent aluminum
powder 3Og 8g great sand 1600
'1600
ίδιο 90 percent picric acid, 10 percent aluminum
wool 30 g 8g great sand . 1730
1760
1760 63 nitroglycerin, 2 collodion wool, 5 alu
minium powder, 30 admixtures 3Og 8g great sand 1890
1900 63 nitroglycerin, 2 collodion wool, 7.5 AIu-)
minium powder, 27.5 admixtures i 30 g 8g great sand 1750
1750 »63 nitroglycerin, 2 collodion wool, 10 aluminum
minium powder, 25 admixtures 30 g 8g great sand 1880
1900 63 nitroglycerin, 2 collodion wool, 12.5 alu
minium powder, 22.5 admixtures 3Og 8g great sand 1880
1880 63 nitroglycerin, 2 collodion wool, 15 alu
minium powder, 20 admixtures 30 g 8g great sand 1730
1750 63 nitroglycerin, 2 collodion wool, 5 alu
minium wool, 30 admixtures 30 g 8g great sand (2050
(2060 63 nitroglycerin, 2 collodion wool, 7.5 alu
minium wool, 27.5 admixtures 3Og 8g great sand 1870
1830

composition charge Zünd
capsule lead
cylinder Ver
Enough . the end
bulge 63 nitroglycerin, 2 collodion wool, 10 alu
minium wool, 25 admixtures
63 nitroglycerin, 2 collodion wool, 12.5 alu
minium wool, 22.5 admixtures
63 nitroglycerin, 2 collodion wool, 15 alu
minium wool, 20 admixtures 3Og
3Og
30 g 8g
8g
8g great
great
great sand
sand
sand 2I2O
2160
1980
2170
2II0
21IO

Claims (1)

Pate NT-A N SPRU cn;
Process for increasing the power of explosives and primers by adding easily oxidizable metals, characterized in that these metals, such as aluminum and magnesium, are used in the form of metal wool.