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1. 发明授权

US4547988A Firearm system with cylinder bolt mechanism 失效
标题翻译：枪支系统带气缸螺栓机构
公开(公告)号：US4547988A
公开(公告)日：1985-10-22
申请号：US514815
申请日：1983-06-17
申请人： Lennart C. O. Nilsson
发明人： Lennart C. O. Nilsson
IPC分类号： F41A3/18 , F41C11/00 , F41C21/12
CPC分类号： F41A3/18
摘要： In a firearm with a cylinder bolt mechanism, a locking chamber (27) is arranged in a space in the barrel between the rear end of the barrel and the rear end of the cartridge chamber for a bolt tip (28) on the bolt. Behind the locking chamber in the barrel is arranged a separate locking ring (23) between a stop (25) in the receiver and the rear end of the barrel. The locking ring is provided with lugs and grooves, and the bolt head is provided with corresponding claws which are able to pass through the grooves in the locking ring and to be rotated into the locked position ahead of the lugs in the ring. By introducing the bolt complete with the bolt head into the barrel and locking it securely in this position, it is possible to achieve greater accuracy because the bolt head acts as a stiffening connection between the barrel and the receiver, so that these components of the firearm are unable to move relative to each other as the result of oscillations in the barrel when the cartridge detonates.The rotation of the bolt head may be produced by the axial movement of a bolt handle, whereby the rotational motion is achieved by causing the bolt handle to interact with a spiral groove in a bolt head, of which the bolt tip constitutes a front part. Alternatively, the rotational motion may be achieved by turning the bolt handle upwards and into recess in the bolt body, at the same time as the mainspring is tensioned by sliding between lock lugs arranged for this purpose.
摘要翻译： PCT No.PCT / SE81 / 00368 Sec。 371日期1983年6月17日第 102（e）日期1983年6月17日PCT申请日1981年12月11日PCT公布。公开号WO83 / 02153 日期：1983年6月23日。在具有气缸螺栓机构的枪械中，锁定室（27）布置在枪管的后端和枪管室的后端之间的空间中，用于螺栓尖端（ 28）在螺栓上。在筒体中的锁定室后面，在接收器中的止动件（25）和枪管的后端之间布置有分离的锁定环（23）。锁定环设置有凸耳和凹槽，并且螺栓头设置有相应的爪，其能够穿过锁定环中的凹槽并且旋转到环中的凸耳前方的锁定位置。通过将具有螺栓头的螺栓插入筒体并将其牢固地锁定在该位置中，可以实现更高的精度，因为螺栓头用作筒体和接收器之间的加强连接，使得枪支的这些部件当盒被引爆时，由于筒体的振荡而不能相对移动。螺栓头的旋转可以通过螺栓手柄的轴向移动来产生，由此通过使螺栓手柄与螺栓头中的螺旋槽相互作用来实现旋转运动，螺栓头中的螺栓槽构成前部。或者，旋转运动可以通过将螺栓手柄向上转动并进入螺栓体中的凹部中，同时通过为此布置的锁定凸耳之间的滑动而将发条拉紧。

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