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This invention relates to the production of an electrified jet of gas or vapor for any desired purpose such as the production of high potentials, and principal object thereof is to provide for accomplishing this result in such a way that the electrified jet may be of substantially constant character, independently of its velocity, and that change in the velocity will not seriously affect the result of the process; and, in short, to produce such a jet of gas in a highly efficient manner.
According to this invention I introduced into the jet charged particles or ions of one sign from a space not within the current of gas. In this way no direct action of the current affects or modifies the introduction of the stream of charged particles. If a stream of air or other gas were impregnated with particles or ions by a mean s existing in the stream itself the effectiveness would be greatly limited. For example, if the ions were produced by a hot filament an increase in the velocity of the gas would seriously cool the filament and if a discharge from points were employed, friction and eddies in the gas would increase rapidly with any increase of velocity. These difficulties are done away with by my invention, because if the ions or charged particles are produced in a space through which the current does not pass they are out of the way of the direct action of the jet of gas and it may have any desired velocity or may contain any vapor or erosive solid particles and yet not interfere with the production of ions for introduction into the jet. Further objects and advantages of the invention will appear hereinafter.
- Robert Goddard
electrified jets of gas, jet charged particles
Goddard, Robert, "Method of and Means for Producing Electrified Jets of Gas" (1920). WPI Patents Collection. 32.