Publisher's Synopsis
Excerpt from Van Nostrand's Engineering Magazine, Vol. 32: January June, 1885
For this reason other means for pro pelling the projectile have been sought, and as it has been shown by the Perkins steam gun and the common air gun that the expansive force of high pressure steam, or of compressed-gases, ossesses for this purpose a considerable egres of eficien cy, while at the same time the pressure can be so regulated that the projectile can be started without being subjected to any considerable initial shock, this form of gun has been recently adopted for experimental purposes. The velocity is attained by lengthening the gun so that the projectile is exposed for some time to the action of the expanding gases.
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