Firearm side casing ejection assembly and related techniques
The techniques described herein relate to methods and apparatuses for casing ejection mechanisms. The firearm includes a lever, an adapter with a first hole and second hole, and a magazine inserted inside the first hole. The lever is configured to cause a casing to be ejected in a direction parallel to a plane along which the lever moves while ejecting the casing or at least partially toward a side of the firearm.
1 . A firearm comprising:
a casing ejection assembly configured to move a casing out of the firearm, wherein the casing ejection assembly includes:
one or more plungers configured to engage the casing by protruding through a breech face of a bolt after the bolt has been opened at least partially; and
a rod assembly including a front rod and a rear rod; and
an actuator configured to actuate the casing ejection assembly and cause the casing to be ejected in a first direction at least partially toward a side of the firearm.
2 . The firearm of claim 1 , wherein:
the casing ejection assembly further comprises a guide, and
the guide is configured to apply force on the casing at least partially in the first direction, and flex away from the first direction in response to force applied to the guide.
3 . The firearm of claim 2 , wherein:
the casing ejection assembly further comprises an extractor opposite the guide, and
the extractor is configured to mechanically engage the casing and swing the casing in the first direction.
4 . The firearm of claim 3 , wherein:
the extractor includes at least one surface shaped to avoid the casing catching on any features of the casing ejection assembly while moving from a magazine into a chamber of the firearm during loading.
5 . The firearm of claim 3 , wherein:
the extractor is in the first direction relative to the guide.
6 . The firearm of claim 3 , wherein:
the guide and the extractor are on opposite sides relative to a center of the breech face of the bolt.
7 . The firearm of claim 2 , wherein:
the guide is configured to operate as a detent on the casing by securing the casing differently based on an amount of force applied between the casing and the guide.
8 . The firearm of claim 1 , wherein the casing ejection assembly further comprises:
an undercut around a surface that interfaces with the casing; and
an extractor configured to mechanically engage the casing and push a rim of the casing against the undercut in a process of moving the casing out of the firearm.
9 . The firearm of claim 8 , wherein the extractor is arranged opposite the undercut.
10 . The firearm of claim 1 , wherein:
the casing ejection assembly further comprises a rod spring that is parallel with and between the front rod and the rear rod, wherein the rod spring is configured to be compressed based on the rear rod encountering a stop for at least part of a time when the casing ejection assembly moves towards a butt of the firearm and to apply force to the front rod to assist in ejecting the casing.
11 . The firearm of claim 10 , wherein:
the casing ejection assembly further comprises a flange in a fixed arrangement with at least one of the one or more plungers on one side of the flange and adjacent to the front rod on an opposite side of the flange, wherein the flange is configured to push the at least one of the one or more plungers in a second direction opposite the butt of the firearm for at least part of a time when the breech face of the bolt moves towards the butt of the firearm.
12 . The firearm of claim 11 , wherein:
the casing ejection assembly further comprises a spring disposed between the flange and the breech face of the bolt that is configured to be compressed when the front rod pushes the flange away from the butt of the firearm.
13 . The firearm of claim 12 , wherein:
the spring is configured to push the flange toward the butt of the firearm following ejection of the casing such that the one or more plungers retract from the breech face of the bolt.
14 . The firearm of claim 1 , wherein:
the casing is typically used for centerfire pistol cartridges.
15 . The firearm of claim 1 , wherein:
the firearm is a lever-action firearm including a lever, and
the first direction is within 45 degrees of orthogonal to a plane along which the lever moves while ejecting the casing.
16 . The firearm of claim 1 , further comprising a rod spring coupling the front rod and the rear rod.
17 . The firearm of claim 16 , further comprising a flange, wherein:
the one or more plungers extend from a first side of the flange; and
the front rod is configured to engage with a second side of the flange based on force transmitted from the rear rod through the rod spring.
18 . The firearm of claim 17 , further comprising a flange spring extending from the first side of the flange and configured to engage with the breech face of the bolt when the one or more plungers protrude through the breech face of the bolt.
19 . The firearm of claim 18 , wherein the one or more plungers comprise a plurality of plungers.
20 . The firearm of claim 19 , wherein the plurality of plungers are disposed distal to the side of the firearm toward which the casing is to be ejected.