the cases of the cartridges fired the container has an inner case retention wall rising up to the window a system for the immobilizing of the container by ratchet in three positions makes it possible temporarily to maintain the container in a bottom position in order to collect the cases in an intermediate position in order to permit the handling of the loading handle and possibly of the members concealed in the bottom position without losing the cases collected and in a top position in order to recover the cases collected which fall by gravity and in order to permit easy inspection of the cartridge chamber application_number US 35798489 A description in its first embodiment shown in fig1 to 3 the device is shown associated with an assault gun 1 shown in thin dot dash lines having a loading handle 2 and an ejection window 3 for the cases of the cartridges shot which are located on the same side of the frame of the gun close to each other this device comprises a support 4 and a container 6 which are connected by a permanent connection hinge 5 as well as means for the temporary immobilizing of the container with respect to the support which means are formed here by a ratchet member 12 centered on the axis of the hinge 5 and rigidly connected with the container 6 and by a holding pawl 11 pressed by means of a spring blade 10 against the ratchet member.