GB547239A - Improvements in hand grenades for the purpose of practice - Google Patents

Abstract

547,239. Grenades. TRENCH, J. KNIGHTS-. March 17, 1941. Nos. 3637 and 10939. [Class 9 (i)] A practice grenade comprises an explosive charge embedded in an outer casing of an easily disintegratable or friable material, such as clay, which is moulded to the shape and size of a Mills' bomb, a time fuze leading from the explosive charge to the outside, and a match head for igniting the fuze. The explosive charge 1, which may be ordinary block powder, is contained in a fabric, cardboard or metal container 2 which is placed within a hole in a moulded clay body 5 or this body is moulded around the container and is made waterproof. A fuze 4 is attached to one end of the container and is provided with a match head 8 at its outer end adapted to be ignited by friction on a pad to which a mixture of dextrine, red phosphorus, antimony tri-sulphide, powdered glass and waterproofing wax emulsifiers resin and aluminium acetate has been applied. The match head is also rendered waterproof and consists of a mixture of red phpsphorus, potassium chlorate, bichromate, flowers of sulphur, powdered glass, lead dioxide, umber, colophony with cellulose acetate as waterproofing agent. The fuze is sealed into the body by a seal 9 and its external portion may be wholly or partially protected by a metal casing 6 secured to it by indentations 7 therein.