F - Mech Eng,Light,Heat,Weapons – 41 – A
Patent
F - Mech Eng,Light,Heat,Weapons
41
A
89/14
F41A 21/48 (2006.01) F41A 5/18 (2006.01)
Patent
CA 1080012
ABSTRACT OF THE DISCLOSURE In an automatic gun of the type wherein the gas pres- sure generated by the firing of the shot shell is transmitted to the breechblock in the receiver housing by the axial sliding move- ment of an action bar mounted outside of the gunbarrel or the cartridge magazine tube so as to release the locking of the breechblock thereby resulting in the recoiling force of the breechblock, the automatic gas operating device for loading a shot shell comprises the above described action bar assembly constituted by action bars integral with each other or slidably mounted coaxially with each other and an adjusting spring for arresting the contraction of the span between the stem bodies by the loading force of the spring, a cylinder fixedly secured to the gunbarrel in juxtaposed relationship to the cartridge maga- zine tube for introducing the gas pressure therein, the forward end of the action bar assembly extending slidingly into the cylin- der in the direction of the generating line of the gunbarrel, while the rearward end thereof passes through a guide hole of the receiver so as to be positioned at the front surface of the breechblock, the rearward end being provided with a stopper for restricting the axial movement of the action bar assembly to a predetermined length. The supporting mechanism serves to simul- taneously arrest the rotation of the gunbarrel and the fore- arm by engaging a projection of a predetermined shape provided at the forward end of the receiver with cutout portions provided in the outer periphery each of the gunbarrel and the fore-end (or fore-arm).
290932
Kabushiki Kaisha Kawaguchiya Hayashi Juho Kayaku-Ten
Na
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