Breech load pistol and conversion

• US 4,999,939 A
• Filed: 11/20/1989
• Issued: 03/19/1991
• Est. Priority Date: 12/31/1987
• Status: Expired due to Fees

• Current Assignee: Reese Surplus Incorporated
• Original Assignee: Springfield Armory, Inc.
• Inventors: Kuehl, Robert A., Reese, Robert R.
• Primary Examiner(s): Carone, Michael J.
• Application Number:
  US07/439,460
• Time in Patent Office: 484 Days
• Field of Search: 42/40, 42/75.02, 42/75.03, 42/75.04
• US Class Current: 42/40
• CPC Class Codes: F41A 11/02 Modular concepts, e.g. weapon-family concepts
• CPC Class Codes: F41C 7/11 Breakdown shotguns or rifles hinge-frame revolvers F41C3/16; breech mechanisms therefor F41A3/58; cocking mechanisms therefor F41A19/41

Abstract

A breech load pistol and conversion kit which may be adapted to the frame of a semi-automatic pistol, such as a Government 0.45 pistol. The present invention may provide a modified reinforced slide which is slidably mounted to the pistol frame and is adapted to include a pivotable barrel assembly mounted thereto. The barrel preferably is suitable for target pistol accuracy. The barrel assembly may be pivoted exposing the breech end for single shot loading for target shooting applications. The conventional semi-automatic pistol magazine or clip may be replaced with a modified clip acting as a breech release actuator having a lever mechanism which is operable to release a latch holding the barrel assembly in engagement with the slide. The present invention also provides a pistol with a gas relief port. The present invention further provides a rim ejector for ejecting spent cartridges using a camming action occurring during pivoting of the barrel assembly to a loading position.

Claims

1. A breech load firearm comprising:

a frame assembly having a trigger/hammer assembly including a trigger, a grip, and receiver body;

a barrel assembly coupled to said frame assembly and including a barrel having a muzzle end and a breech end having a rearward facing breech surface, said barrel having a bore therein defining a central barrel centerline; and

means for reinforcing said receiver body of said frame assembly including a reinforcing portion of said frame assembly tapered from an upper rearward location which is adjacent said breech surface and which is above said barrel centerline and which is behind said trigger on said receiver body to a lower forward location which is below said barrel centerline and which is in front of said trigger on said frame assembly, wherein said reinforcing portion provides strength and rigidity increasing along said frame from said lower forward location to said upper rearward location to resist flexure of said frame.

2. The firearm of claim 1 wherein said barrel is pivotable with respect to said frame assembly between a firing position and a loading position.

3. The firearm of claim 2 wherein said firearm comprises a pistol.

4. The firearm of claim 3 wherein said frame assembly includes a frame and a slide, wherein said slide is mounted to said frame rigidly to prevent movement of said slide with respect to said frame during firing of the firearm, and wherein said slide is removable from said frame, and wherein said barrel is pivotally mounted to said slide.

5. The firearm of claim 4 wherein said bore is rifled and has a large bore diameter for receiving high power ammunition creating high bending stress forces in said frame assembly.

6. The firearm of claim 1 wherein said firearm comprises a pistol.

7. The firearm of claim 1 wherein said frame assembly includes a frame and a slide, wherein said slide is mounted to said frame rigidly to prevent movement of said slide with respect to said frame during firing of the firearm, and wherein said slide is removable from said frame, and wherein said barrel is pivotally mounted to said slide.

8. The firearm of claim 1 wherein said bore is rifled and has a large bore diameter for receiving high power ammunition creating high bending stress forces in said frame assembly.

9. A breech load firearm comprising:

a frame assembly having a trigger/hammer assembly, a grip, and receiver body;

a barrel assembly coupled to said frame assembly and including a barrel having a muzzle end and a breech end having a rearward facing breech surface, said barrel having a bore therein defining a central barrel centerline; and

means for reinforcing said receiver body of said frame assembly including a reinforcing portion of said frame assembly tapered from an upper rearward location which is adjacent said breech surface and which is above said barrel centerline on said receiver body to a lower forward location which is below said barrel centerline on said frame assembly, wherein said reinforcing portion provides strength and rigidity increasing along said frame from said lower forward location to said upper rearward location to resist flexure of said frame, and wherein said bore is rifled and has a large bore diameter for receiving high power ammunition creating high bending stress forces in said frame assembly.

10. The firearm of claim 9 wherein said firearm comprises a pistol.

11. The firearm of claim 10 wherein said barrel is pivotally mounted to said frame assembly.