Claims
- 1. A bolt carrier assembly for a gas operated gun including a housing means, a bolt supported within said housing means, a P-cross sectionally shaped member having the longer side of the P shaped member secured to said housing means, said P shaped member having the closure of the P formed by a wrapped over portion, and said P shaped member being forwardly extended with respect to the bolt to lie adjacent a gas cocking system of the gun which is provided a predetermined distance along a barrel of said gun, and a main drive spring located alongside the wrapped over portion of the P shaped member for providing motion to the housing means and said P shaped member.
- 2. A bolt carrier assembly as claimed in claim 1, wherein the housing means is a block having a bore within which the bolt is reciprocally movable.
- 3. A bolt carrier assembly as claimed in claim 2, wherein the block is shaped to provide a bearing surface for supporting said bolt carrier assembly and to permit reciprocal motion thereof.
- 4. A bolt carrier assembly as claimed in claim 2, wherein sear contacting lugs are provided through the P shaped member and the housing means.
- 5. A bolt carrier assembly as claimed in claim 4, wherein two lugs are provided one passing through the wrapped over portion of the P shaped member and the other passing through the planar portion of the P shaped member.
- 6. A bolt carrier assembly as claimed in claim 4, wherein the block has a downward extension substantially the same depth as the lugs for ensuring that as the block travels rearwardly a cartridge being fed in operation by a magazine is not contacted by the lugs.
- 7. A bolt carrier assembly as claimed in claim 4, wherein a closure member is provided at the end of the P shaped member remote from the housing means.
- 8. A bolt carrier assembly as claimed in claim 7, wherein said closure member is arranged to support one end of the main drive spring.
- 9. A bolt carrier assembly as claimed in claim 7, wherein an anti-bounce weight is mounted in the wrapped over portion of the P shaped member.
- 10. A bolt carrier assembly as claimed in claim 9, wherein said anti-bounce weight has a chamfer at one end which is engageable between the wrapped-over part of the P shaped member and one of the sear contacting lugs and the remote other end of the anti-bounce weight is attached to a compression spring which abuts the closure member, whereby the spring is compressed by the anti-bounce weight when the block and P shaped member combination are suddenly retarded.
- 11. A bolt carrier assembly as claimed in claim 2, wherein a bolt cam pin is connected to said bolt and a cam surface is provided on a side wall of the block for cooperating with said bolt cam pin (thereby) for rotating said bolt.
- 12. A bolt carrier assembly as claimed in claim 11, wherein an aperture is provided in the opposing side wall of the block to the cam surface to facilitate removal of said cam pin.
- 13. A bolt carrier assembly as claimed in claim 7, wherein a notch is provided in the top of the P cross-sectionally shaped member adjacent the closure member for engagement by a cocking means.
- 14. A bolt carrier assembly as claimed in claim 1, wherein the bolt has a wall forming a body portion thereof, a cartridge extractor claw is provided, said claw having an opening therein for engagement with a cannelore on a chambered cartridge, a pivotal mounting for said extractor claw and a spring loading means for said extractor claw, whereby said spring loading means biasses said opening in the claw into a position such that the cannelore on a chambered cartridge is engageable.
- 15. A bolt carrier assembly as claimed in claim 14, wherein a spring loaded ejector is provided on an opposing side of the longitudinal axis of the bolt to the extractor claw and the combination of claw and ejector are arranged to provide lateral impetus to a de-chambered, spent cartridge.
- 16. A gas operated gun having a receiver, a rear wall of said receiver, a barrel connected to said receiver remote from said rear wall, a gas cocking system provided a predetermined distance along the barrel, guide rail means within said receiver, a bolt carrier assembly slidably supported by said guide rail means, said bolt carrier assembly comprising a housing means, a bolt slidably mounted within said housing means, a P-cross sectionally shaped member having the longer side of the P shaped member secured to said housing means, said P shaped member being forwardly extended with respect to the bolt toward said gas cocking system and having the closure of the P formed by a wrapped over portion, and a main drive spring located alongside the wrapped over portion of the P shaped member for providing motion to the housing means and P shaped member.
- 17. A gas operated gun as claimed in claim 16, wherein the main drive spring is supported on a guide rod and constrained between a closure member at one end of the P shaped member remote from the housing means and a tubular collar which is slidable between predetermined limits on the opposite end of the guide rod.
- 18. A gas operated gun as claimed in claim 16, wherein the rear wall of the receiver is slidably positionable and a lug is mounted internally of the receiver on said rear wall, said lug being arranged to cooperate with said tubular collar and on which said collar is mountable, wherein handle means external of the receiver are provided to slide said collar from said lug so that the rear receiver wall can be re-positioned to permit the bolt carrier assembly to be removed from the receiver.
- 19. A bolt carrier assembly (including a housing means, a rotatable bolt longitudinally extending within and from said housing means,) as claimed in claim 1 wherein there is provided a plurality of radial lugs (on the portion of the bolt external from said housing means) for locking said bolt to (a) the barrel, a latch means mounted in said housing for interleaving and thereby latching said lugs, said latch means being longitudinally retractable with respect to said housing means and bias means for urging said latch means toward the lugs (whereby said latch means is longitudinally retractable with respect to said housing means).
- 20. A bolt carrier assembly as claimed in claim 19, wherein the latch means interleaves between only two adjacent lugs.
- 21. A bolt carrier assembly as claimed in claim 19, wherein the housing means is a block having a bore and a blind groove provided in an outer surface of the block, the bolt is mounted within said bore of said block and the latch means is slidably mounted in said blind groove.
- 22. A bolt carrier assembly as claimed in claim 21, wherein there is provided a member arranged to carry a main drive spring and said outer surface of the block is situated adjacent said member.
- 23. A bolt carrier assembly as claimed in claim 21, wherein the latch means comprises a bar member shaped and dimensioned to engage between adjacent lugs and the bias means is a compression spring, said latch means and said bias means being mounted in the blind groove with the spring between the bar member and the closure of the blind groove.
- 24. A bolt carrier assembly as claimed in claim 23, wherein the bar member has a transverse slot and a transverse pin is arranged in the block to cooperate with said transverse slot to thereby limit the extent of longitudinal travel of the bar member.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8039739 |
Dec 1980 |
GBX |
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CROSS REFERENCE TO RELATED APPLICATION
This application is a divisional of Ser. No. 520,117 now U.S. Pat. No. 4,475,437 which in turn was a divisional of Ser. No. 280,740 now U.S. Pat. No. 4,416,186.
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Divisions (2)
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Number |
Date |
Country |
Parent |
520117 |
Aug 1983 |
|
Parent |
280740 |
Jul 1981 |
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