Various methods are used to deliver a fiery charge to an explosive device primer. You can use gasoline spilled from the charge to the fuse point, or spill gunpowder. Powder stopin is also used, which is placed in paper packaging, or other available methods. However, they are not reliable as they cannot provide an accurate burn time at a certain distance, and they cannot be used in bad weather or specific terrain.
At one time, the pickford cord was very popular, which could cope with almost any task of those times. It was made in advance, which made it possible to carry out blasting without delay. It could burn even with light rain and wind, and also gave a clear idea of the detonation time, since the main substance in it was powder stopin, which had a certain burning time (one second per meter of cord).
Another feature that the fickford cord had was its elasticity. It can be rolled up white, conveniently carried, and when preparing an explosion, wrap it behind any obstacle, which allowed sappers to set charges at short distances, while they themselves could be located in cover.
Suchthe properties of fickfords, the cord, the manufacture of which consisted in winding the stop with textiles, was obtained due to the design. The fact is that the active substance was wrapped with a layer of fabric, which was impregnated with gunpowder. This ensured uniform combustion and prevented attenuation. Next, a second layer of textile was applied, which was smeared with bitumen. It protected it from moisture, gave additional elasticity and supplied oxygen to the fickford cord during combustion, which was very important.
However, this fire-water cord had its drawbacks. He did not tolerate negative temperatures, because of which he broke and crumbled. It could also become damp, and in conditions of high humidity or in water it was practically useless. That is why today it is considered obsolete, and when carrying out blasting fickfords, the cord is practically not used anywhere.
There are many other fire guides that have significantly better performance and reliability. At the same time, their manufacture is much simpler and cheaper, which can significantly reduce the cost of blasting. Bickford cord is almost impossible to buy today. Although most stores sell other fire guides made using different technologies and using different elements, but which have exactly the same name. We can say that only the name remains of the original invention of the past centuries, which is firmly embedded in people's memory.
Thus, fickford cord can be purchased at any specialized store or taken from modern pyrotechnics. Whereinthe resulting copy will be similar to the original of previous years only visually. In fact, this is a completely different device that meets modern needs and operating conditions.
