GB173781A - Improvements in combustible mixtures for generating gases under pressure - Google Patents

Abstract

173,781. Kochmann, W. Jan. 10, 1921. Gencrating combustion products under pressure.-A combustible substance for generating gases under pressure comprises any ordinary explosive mixed with a substance which is decomposable at a comparatively low temperature, such as an oxalate, and of such nature that, while it does not participate directly in the main reaction, it is subjected by the heat of the reaction to gas-evolving decomposition. Magnesium carbonate, iron oxalate and substances containing the CN group are mentioned as substances which may be employed for the purpose of generating additional gases. The combustible substance may be made up into charges of conical form adapted to burn towards parts of decreasing cross section, or a column of cylindrical charges may be used, separated by non-combustible plates each having an aperture for transmitting combustion from one charge to the next. The non-combustible substance may be added in different proportions to different parts of the charge so that combustion proceeds towards the parts containing the non- combustible in gradually increasing proportion. The Specification as open to inspection under Sect. 91 (3) (a) mentions also the addition to an ordinary explosive of such substances as infusorial earth, clay, iron oxide, and colloidal substances, such as glue, soluble cellulose, &c. This subjectmatter does not appear in the Specification as accepted.