Loading apparatus for rapid fire weapon

• US 4,357,857 A
• Filed: 07/05/1979
• Issued: 11/09/1982
• Est. Priority Date: 07/05/1979
• Status: Expired due to Term

• Current Assignee: PACCAR Incorporated
• Original Assignee: PACCAR Incorporated
• Inventors: Magnuson, Roland A.
• Primary Examiner(s): BENTLEY, STEPHEN
• Application Number:
  US06/055,065
• Time in Patent Office: 1,223 Days
• Field of Search: 89/155, 89/156, 89/157, 89/24
• US Class Current: 89/156
• CPC Class Codes: F41A 9/45 the cartridge chamber or the barrel as a whole being tiltable or transversely slidable between a loading and a firing position F41A9/25 and F41A9/27 take precedence

Abstract

A loading apparatus for telescoped round ammunition for a rapid fire gun in which the loading occurs during the recoil and counter-recoil movements of the gun with the recoil and counter-recoil movements of the gun being employed to position a new round into the chamber, discharge the old round from the chamber and reposition the chamber in the breech. One or two magazines of new rounds can be selectively used. The chamber can be moved along tracks out of the breech and back into the breech or can be swung out of and into the breech.

Claims

1. Reloading apparatus in a rapid fire weapon of the type using rounds having projectiles and cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel which moves axially in recoil and counter-recoil relative to the frame, a breech aligned behind the gun barrel, means for opening and closing the breech, and a chamber for positioning a new round in alignment with the gun barrel within the breech the improvement comprising:

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber being operatively connected to said moving barrel in recoil and counter-recoil, said chamber moving means, said spent round discharging means and said new round delivering means all being actuated directly by said weapon recoil and counter-recoil movement, said new round being held stationary relative to the frame while the barrel and chamber are moved relative to the frame in such counter-recoil over the new round to envelope the new round fully into the chamber, said chamber moving means including a track having multiple ramps interconnected by upper and lower horizontal runs, said track having a first path parallel to the direction of gun barrel movement in recoil for guiding the chamber rearwardly aligned with the barrel until near the end of recoil so that the chamber retains gases in the barrel until dissipated, said chamber having forward and rearward guide members seated in said track, said guide members following said track to lower the chamber along said ramps during recoil and following said track to raise the chamber along said ramps back into said breech during counter-recoil.

2. The apparatus of claim 1, said track including forward, intermediate and rearward parallel ramps, upper gates at each of the upper extremities of said intermediate and forward ramps at the junction of the ramps with the upper horizontal runs, lower gates at the lower extremities of the intermediate and forward ramps at the junction of the lower horizontal runs, and an upper gate opener located at the upper extremity of the rear ramp and a lower gate opener located at the lower extremity of the forward ramp, said upper and lower intermediate gates being spring biased closed and respectively interconnected by a link to said upper gate opener and said lower gate opener, respectively, whereby the rearward guide members on the chamber will during recoil engage said upper gate opener and open the intermediate gate for access to said intermediate ramp to guide the forward and rear guide members of the chamber simultaneously down said intermediate and rear ramps, said lower gate opener will be engaged during counter-recoil by said chamber forward guide members to open the intermediate lower gate for access to said intermediate ramp to guide the forward and rear guide members simultaneously up said forward and intermediate ramps.

3. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel which moves axially in recoil and counter-recoil relative to the frame, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuated by said recoil and counter-recoil, said chamber being operatively attached with the moving barrel in recoil and counter-recoil, said chamber moving means including a pivot, and means for swinging the chamber downwardly about said pivot during recoil into a load position and upwardly during counter-recoil, said new round being held stationary relative to the frame while the barrel and chamber are moved relative to the frame in such counter-recoil over the new round to envelope the new round fully into the chamber.

4. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuatable by said weapon recoil and counter-recoil, said means for delivering a new round including a set of open, opposed gripping arms transversely spaced and forward of said breech, means for moving a new round to said gripping arms from said magazine, means for closing said gripping arms on a new round and positioning the gripping arms and new round centrally aligned below and forward of said breech, stop means engageable with said new round during counter-recoil for stopping forward movement of said round within said gripping arms, said chamber in said loading position being coaxially aligned with said new round when held by said stop means whereby continued forward movement of said chamber during counter-recoil slides said chamber over said new round to carry a new round into said breech.

5. The apparatus of claim 4, pawl means carried with said barrel and selectively engageable with a new round in said magazine and carrying the round rearwardly out of said magazine between said open gripping arms, and means for moving new rounds along said magazine.

6. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuatable by said weapon recoil and counter-recoil, said means for delivering a new round including a set of opposed gripping arms transversely spaced and forward of said breech, means for moving a new round to said gripping arms from said magazine, means for closing said gripping arms on a new round and positioning the gripping arms and new round centrally aligned below and forward of said breech, stop means engageable with said new round during counter-recoil for stopping forward movement of said round within said gripping arms, said chamber in said loading position being coaxially aligned with said new round when held by said stop means whereby continued forward movement of said chamber during counter-recoil slides said chamber over said new round to carry a new round into said breech, each said gripping arm including an elongated bell crank having a cam roller attached thereto, and stationary cam slots on said weapon frame for guiding the cam rollers as the gun recoils.

7. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuatable by said weapon recoil and counter-recoil, including a pair of transversely spaced magazines, pawl means being selectively engageable with a new round in each of said magazines and carrying the new round rearwardly out of each said magazine, and including ramp means at each magazine for raising a new round into a position for engagement by said pawl means.

8. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuatable by said weapon recoil and counter-recoil, said means for delivering a new round including means for carrying a new round rearwardly, means for stopping forward movement of the new round, said chamber moving means including means for moving the chamber into coaxial alignment with said new round while a spent case is in the chamber, and means for moving the chamber forwardly enveloping said new round into said chamber while discharging the spent case rearwardly, including spring hook means for resiliently holding the spent case as the chamber moves off from the case whereby the spent case is held by said hook means at the rear and the new round at the front, and means for moving the chamber and new round upwardly into said breech and stripping said spent case from between said hook means and said new round.

9. Reloading apparatus in a rapid fire weapon of the type using rounds having cylindrical rimless cartridge cases and having a frame, at least one magazine for supplying rounds, a gun barrel, a breech aligned behind the gun barrel, means for opening and closing the breech;

and a chamber for positioning a new round in alignment with the gun barrel within the breech, the improvement comprising;

means for moving said chamber between a loading position outside of said breech and into a firing position within said breech;

means for delivering a new round from said magazine to said chamber in said loading position; and

means for discharging a spent round from said chamber;

said chamber moving means, said spent round discharging means and said new round delivering means all being actuatable by said weapon recoil and counter-recoil, said means for delivering a new round including a set of opposed gripping arms transversely spaced and forward of said breech, means for moving a new round to said gripping arms from said magazine, means for closing said gripping arms on a new round and positioning the gripping arms and new round centrally aligned below and forward of said breech, stop means engageable with said new round during counter-recoil for stopping forward movement of said round within said gripping arms, said chamber in said loading position being coaxially aligned with said new round when held by said stop means whereby continued forward movement of said chamber during counter-recoil slides said chamber over said new round to carry a new round into said breech, pawl means carried with said barrel and selectively engageable with a new round in said magazine and carrying the round rearwardly out of said magazine between said open gripping arms, and means for moving new rounds along said magazine, said means for delivering new rounds including means for carrying a new round rearwardly, means for stopping forward movement of the new round, said chamber moving means including means for moving the chamber into coaxial alignment with said new round while a spent casing is in the chamber, and means for moving the chamber forwardly enveloping said new round into said chamber while discharging the spent case rearwardly, including spring hook means for resiliently holding the spent case as the chamber moves off from the case whereby the spent case is held solely by said hook means at the rear and the new round and chamber at the front, and means for moving the chamber and new round upwardly into said breech and stripping said spent case from between said hook means and said new round and chamber.