|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

WEAPONS; BLASTING

|  | F42 |
AMMUNITION; BLASTING

|  | F42 |
Note(s) Although simulators are generally in Fulltext... Hierarchy... Expanded...G09, provision is included in class Fulltext... Hierarchy... Expanded...F42 for means for practice and training which may have aspects of simulation, e.g. in apparatus for so-called "military games" This class does not include construction of fireworks, as Fulltext... Hierarchy... Expanded...C06D provides not only for compositions but also for firework bodies. In this class: The following terms are used with the meanings indicated: "primer" effects the first explosive step in the sequence of explosion; "percussion cap" — a primer which is struck to explode; "igniter" effects the first spark-producing or heat-producing step but may not be explosive; "firing-means", "initiator" (used respectively in the arts of weaponry and blasting) — the device acting directly on the primer, which device may or may not form part of the fuze; "detonator charge" — a charge used to amplify the explosion of the primer; "fuze" — an assembly which determines the moment of the explosion (instantaneous or delayed) and which incorporates firing-means for initiating the explosion spark.

|  | F42B |
EXPLOSIVE CHARGES (chemical compositions Fulltext... Hierarchy... Expanded...C06); AMMUNITION; MISSILES (fuses Fulltext... Hierarchy... Expanded...F42C)

|  | F42B |
Note(s) In order to avoid confusion with devices that are variously described as guided missiles, self-propelled missiles, and rockets, such devices, if self-propelled, should be classified in group Fulltext... Hierarchy... Expanded...F42B 15/00 except that when such devices are fired from a gun they should be classified in group Fulltext... Hierarchy... Expanded...F42B 13/28. If such devices are not self-propelled, they should be classified in group Fulltext... Hierarchy... Expanded...F42B 25/00 when they fly by falling, and in group Fulltext... Hierarchy... Expanded...F42B 13/00 when they are fired from a gun.

|  | F42C |
FUZES (chemical aspects Fulltext... Hierarchy... Expanded...C06C); ARMING OR SAFETY MEANS THEREFOR

|  | F42D |
BLASTING