Fire piston

Abstract: Frazer’s book Myths of the Origin of Fire gives a fascinating description of the legends about the origin of fire in different regions of the world. From the entry Fire in the encyclopedias we learn that fire is one of the human’s race essential tools, control of which helped start it on the path toward civilization. The original source of fire undoubtedly was lightning, a chance event which remained the only source of fire for many years. The use of fire is one of man’s earliest habits, so when an obvious fireplace with ashes and charcoal is found near such a skull, it is pronounced human. Only after the Neolithic times there is evidence that human beings actually knew how to produce fire. Archeological evidence suggests that the controlled use of fire may date from more than 500,000 years ago. The step from the control of fire to its manufacture required hundreds of thousands of years. According to Singer et al. the discovery of how to make fire was man’s greatest step forward in gaining freedom from the dominance of the environment. The first human beings to control fire gradually learned its many uses. Fire not only kept them warm and cooked their food; they also learned to use it in fire drives in hunting and warfare. The possibility of heating the dwelling enabled people to survive hard winters and to spread to more extreme climates, and to keep off predators. Man’s movement into the cold northern areas was probably a direct consequence of his control of fire. Thus the making of fire and maintaining it became vital tasks, without which many early societies would have perished. The discovery of fire also made possible the production of glass, pottery, metals, etc., as well as providing light when required. We do not know if the chance spark from striking flint against pyrites or a spark made by friction while drilling a hole in wood gave human beings the idea for producing fire, but interestingly enough, making of fire by friction was discovered by people in widely separated parts of the world. The most widespread method for igniting fire was through the conversion of muscular energy into heat through friction. The fire drill, a wooden rod placed in a pit in a fireboard adjacent to tinder, was the commonly used implement. The initial fire was initiated by a rapid rotatory motion imparted by spinning the drill between the palms of the hands by means of a thong, alone or in combination with a bow, or by the up and down action of a pump drill. Other frictional methods, like the fire saw, the fire thong, and the fire plow, were also used. The Eskimos, ancient Egyptians, Asian people, and a few American natives developed mechanical fire drills. A fire piston that produced heat and fire by the compression of air in a small tube of bamboo was a complex device invented and used in Asia. Percussion methods of fire production were also invented at an early time. Pyrite when struck produces a slow burning spark. Once steel was invented, it was used in a like manner, with flint, to produce fire. The spark was caught in tinder (dry, powdery, and easily combustible matter), which caused it to make a small glowing ember. Every traveler carried a tinderbox, containing a piece of steel, a piece of flint, and a supply of reliable tinder. Flint and steel are represented at present by the steel wheel and flint (today a metallic alloy) of the cigarette lighter.

Abstract: years. Understandably enough, they have been attracted above all by the intriguing possibility that the device was invented in that region quite independently of European influences and possibly long before the 1860's, when it appears to have been first observed there by European travelers. Consequently they have tended to regard the fire piston's appearance in Europe in the early years of the nineteenth century as the result either of a separate, though rather less interesting, process of invention in the West2 or, alternatively, of direct importation from those parts of Asia where the device was already commonly used.3 Although such accounts have been valuable, if only in preserving the fire piston from neglect, they have conveyed a view of the instrument's history which is not only incomplete (by virtue of their scant treatment of the European version of the instrument) but which is also supported by inadequate evidence on certain important points.

Abstract: FIELD: engines and pumps. ^ SUBSTANCE: pneumatic drive of fuel atomiser of fire piston engine includes control system of fuel atomiser drive, atomiser drive piston, fuel distributing valves. Drive is equipped with hydraulic accumulator, plunger connected to atomiser drive piston, channel of air supply to gas distributor and the channel interconnected to atmosphere. In order to provide action of pneumatic drive of fuel atomiszer, air is exhausted on movement route of air from compressor to combustion chamber of free piston engine. For that purpose, on air movement route from compressor, some portion of air via air supply channel to gas distributor enters through the latter the upper cavity of piston of atomiser drive. Switching-over of gas distributor from one position to another is performed by control system. ^ EFFECT: simplifying the design of fuel equipment of internal combustion engine. ^ 3 dwg

Abstract: History of the fire piston: It’s amazing that centuries before scientists such as Boyle established the ideal gas law, or the idea of a diesel engine was conceived, the fire piston was being used in Southeast Asia, Indonesia and the Philippines to start fires. The principle of heating air by compression and igniting tinder was accidentally “re-discovered” much later during the early 1800 in Europe by a French airgun manufacturer, who, when firing an airgun in the dark observed light being emitted from the barrel. This led to the development of the “fire syringe”, which was then widely used in Europe until the first wooden matches become popular. Basic theory how a fire piston works: The basic working of the fire piston can be explained by using Boyle’s ideal gas law formula and the diagram shown below. Boyle’s ideal gas law: T R n V P Tinder Nest Charred Cloth