Abstract: A primer feed mechanism mounted on a carrier of an artillery piece includes a body assembly for mounting the primer feed mechanism on the carrier, the body assembly having guide rails and a follower plate; a tray assembly that is movable on the guide rails of the body assembly, the tray assembly including a housing and an injector arm assembly; an actuator drive link connected to the carrier; a quick release link connected to the actuator drive link; and a drive link assembly connected to the quick release link and to the injector arm assembly; wherein one end of the injector arm assembly includes a push pin that reciprocates in the housing to inject a primer and another end of the injector arm assembly includes a follower that travels in the follower plate of the body assembly.

Abstract: A primer feed mechanism mounted on a carrier of an artillery piece includes a body assembly for mounting the primer feed mechanism on the carrier, the body assembly having guide rails and a follower plate; a tray assembly that is movable on the guide rails of the body assembly, the tray assembly including a housing and an injector arm assembly; an actuator drive link connected to the carrier; a quick release link connected to the actuator drive link; and a drive link assembly connected to the quick release link and to the injector arm assembly; wherein one end of the injector arm assembly includes a push pin that reciprocates in the housing to inject a primer and another end of the injector arm assembly includes a follower that travels in the follower plate of the body assembly.

Abstract: An apparatus for retaining an object in a gun tube of a weapon system, the gun tube having a longitudinal axis, a chamber and a breech ring with an opening therein, the apparatus including a plunger that reciprocates in the opening in the breech ring and the chamber; a housing fixed in the opening in the breech ring, the housing holding the plunger; and means for reciprocating the plunger in the opening in the breech ring and the chamber. The object to be retained is propellant. The reciprocating means is automatically operated via electrical and/or mechanical connections to the weapon system.

Abstract: A primer feed mechanism mounted on a carrier of an artillery piece includes a body assembly for mounting the primer feed mechanism on the carrier, the body assembly having guide rails and a follower plate; a tray assembly that is movable on the guide rails of the body assembly, the tray assembly including a housing and an injector arm assembly; an actuator drive link connected to the carrier; a quick release link connected to the actuator drive link; and a drive link assembly connected to the quick release link and to the injector arm assembly; wherein one end of the injector arm assembly includes a push pin that reciprocates in the housing to inject a primer and another end of the injector arm assembly includes a follower that travels in the follower plate of the body assembly.

Abstract: An automatic primer feed mechanism for use with a carrier assembly of a large caliber artillery piece, which includes mechanical assemblies for automatic primer loading after full breech closure and allows for spent primer cartridges to be extracted before opening of the breech to maximize safety, thereby allowing the gun crew to perform artillery piece misfire, sticker and check fire operations before the breech is opened. The mechanism includes a body member that mounts the automatic feed mechanism to the carrier of the artillery piece so as to interface with the carrier to position the mechanism on one side of the breech of the artillery piece. The body member includes a cam surface member, which provides a path for movement of an injection arm member. The tray member has guide rails for engagement with the body, which slides in relation thereto. A magazine containing a plurality of primer cartridges, which inserts in a receiver channel located in the tray member.

Abstract: A device that locks a threaded collar around a cylindrical gun barrel has a lunger extending in a radial direction through the collar. The plunger rides upon a series of ratchet teeth, disposed around the circumference of the gun barrel. The ratchet teeth include ramps and steps. As the collar is threaded onto the gun barrel, the plunger rides up the ramp of each ratchet tooth and drops into the step of the next ratchet tooth around the gun barrel. When in place, the plunger is pushed backwards against the wall of the ratchet tooth and arrests rotation of the collar in the unthreading direction. To remove the collar, the plunger is lifted clear of the ratchet tooth. With the plunger held clear of the step of the ratchet tooth, the threaded collar can be unthreaded.