Cartridge ejection mechanisms and methods for operating the same

Abstract

Cartridge ejection mechanisms and methods of operating the same are disclosed. An illustrated example cartridge ejection mechanism includes a bolt head which has a front face to close a cartridge chamber, a first longitudinal cross-piece on a first side and a second longitudinal cross-piece on a second side. The first and second cross-pieces extend from the front face of the bolt head toward the rear of the bolt head. The cartridge ejection mechanism also includes at least two cartridge extractor hooks spring-mounted to the bolt head in opposed, facing relation to jointly extract a cartridge or cartridge case from the cartridge chamber when the bolt head moves rearward. Additionally, the cartridge ejection mechanism is provided with a stationary ejector assigned to one of the cartridge extractor hooks and having two projection disposed adjacent a corresponding one of the cross-pieces of the bolt head such that, when the bolt head moves sufficiently rearward, the cartridge or cartridge case strikes the projections, pivots around the cartridge extractor hook opposite the ejector, and is ejected to the side opposite the ejector.

1 . A cartridge ejection mechanism comprising: 
 a bolt head having a front face to close a cartridge chamber, a first longitudinal cross-piece on a first side of the bolt head and a second longitudinal cross-piece on a second side of the bolt head, the first and second cross-pieces extending from the front face of the bolt head toward the rear of the bolt head;    at least two cartridge extractor hooks spring-mounted to the bolt head in opposed, facing relation to jointly extract a cartridge or cartridge case from the cartridge chamber when the bolt head moves rearward; and    a stationary ejector assigned to one of the cartridge extractor hooks and having two projection disposed adjacent a corresponding one of the cross-pieces of the bolt head such that, when the bolt head moves sufficiently rearward, the cartridge or cartridge case strikes the projections, pivots around the cartridge extractor hook opposite the ejector, and is ejected to the side opposite the ejector.    
   
   
       2 . A cartridge ejection mechanism as defined in  claim 1 , wherein at least one of the cartridge extractor hooks includes a hook-like end having a surface facing the front face of the bolt head, the surface of the hook-like end being disposed at an acute angle to a plane parallel to the front face of the bolt head.,  
   
   
       3 . A cartridge ejection mechanism as defined in  claim 2 , wherein the acute angle is between approximately 0° and approximately 15°.  
   
   
       4 . A cartridge ejection mechanism as defined in  claim 1 , wherein the cartridge ejection mechanism is structured to extract a cartridge or cartridge case having a caliber of at least 15 mm.  
   
   
       5 . A cartridge ejection mechanism comprising: 
 a bolt head having a front face to close a cartridge chamber, first and second longitudinal grooves on a first side of the bolt head and a third and fourth longitudinal grooves on a second side of the bolt head, the longitudinal grooves extending from the front face of the bolt head toward the rear of the bolt head;    at least two cartridge extractor hooks spring-mounted to the bolt head in opposed, facing relation to jointly extract a cartridge or cartridge case from the cartridge chamber when the bolt head moves rearward; and    a stationary ejector assigned to one of the cartridge extractor hooks and having two projection disposed in corresponding ones of the grooves of the bolt head such that, when the bolt head moves sufficiently rearward, the cartridge or cartridge case strikes the projections, pivots around the cartridge extractor hook opposite the ejector, and is ejected to the side opposite the ejector.    
   
   
       6 . A cartridge ejection mechanism as defined in  claim 5 , wherein at least one of the cartridge extractor hooks includes a hook-like end having a surface facing the front face of the bolt head, the surface of the hook-like end being disposed at an acute angle to a plane parallel to the front face of the bolt head.,  
   
   
       7 . A cartridge ejection mechanism as defined in  claim 2 , wherein the acute angle is between approximately 0° and approximately 15°.  
   
   
       8 . A cartridge ejection mechanism as defined in Claim l, wherein the cartridge ejection mechanism is structured to extract a cartridge or cartridge case having a caliber of at least 15 mm.  
   
   
       9 . A method of ejecting a cartridge comprising: 
 grasping a rear edge of a cartridge or cartridge case with at least two cartridge extractor hooks spring-mounted to a bolt head in opposed, facing relation;    carrying the cartridge or cartridge case rearward with the bolt head; and    striking the cartridge or cartridge case on two projections of a stationary ejector assigned to one of the cartridge extractor hooks to pivot the cartridge or cartridge case around the cartridge extractor hook opposite the ejector and eject the cartridge or cartridge case to the side opposite the ejector.