Patent GB-190501064-A (GB)
Title: Improvements in and relating to Automatic Fire-arms
Inventor: KJELLMAN RUDOLF HENRIK
Filed: 1905-01-19
Granted: 1905-12-21
Abstract: 1064. Kjellman, R. H. Jan. 19. Breech actions, sliding barrel and breeh-block.- The barrel and breech-block recoil together until the barrel is stopped and retained by a non-recoiling spring catch. The breech-block continues its rearward movement, disengages the catch from the barrel and is itself retained by the catch while the released barrel moves forward and releases the catch' holding the breech-block, which is then free to advance. Figs. 23 and 25 are longitudinal sections showing the barrel and breech-block in different positions. At the end of the recoil of the barrel A, a nose a on the barrel frame A<2> is engaged by the projection h' of the spring catch H, as shown in Fig. 23. During the independent rearward movement of the breechblock E, the incline e acting on the projection h<2> of the catch H depresses the catch out of engagement with the nose a and the barrel moves forward, the breech-block being retained by the engagement of the projection h<2> of the catch H in the notch e<1>. As the barrel moves forward, the lug a<1> on the barrel frame A<2> engages a lateral shoulder h<3> of the catch H and thus depresses the catch to release the breech-block. The cartridgecase is ejected by the forwardly-moving barrel by means of a tooth a<2>, Fig. 11, of a cross-piece a<3> on the barrel frame. Fig. 9 shows a horizontal sec. tion of the breech-block E and Fig. 11 a vertical section of the arm showing the barrel and breechblock in the extreme rearward position. As the barrel recoils, the striker F is cocked by the arm A<4>, which is pivoted on the barrel frame A' and is turned by the engagement of its lower end against the fixed abutment C<2>. The breech-bolt is locked by means of pivoted lateral locking-levers E<1>, which are disengaged and engaged with recesses in the barrel frame by projections on the striker F. The sear e<9>, pivoted at its forward end, carries a tooth e<12> engaging with a tooth a<5>, Fig. 28, at the upper end of a movable intermediate piece a<6> mounted in the barrel frame. This intermediate piece a6 is connected to the pivoted double-fulcrum lever g<1> by a tooth a<7> engaging in a groove g of the lever g<1>. When the trigger G is pulled, the tail g<2> of the lever g<1> is lifted and the lever g<1> begins to turn about the pivot g<5> near its forward end, until the fixed pivot g<6> engages the lower edge of,the slightly elongated hole in the lever g<1>. The lever g<1> then turns about the pivot g<6> and pulls down the intermediate piece a<6>, which moves laterally so that it cannot engage the sear again until the trigger has been released after firing. When the arm is to be used as an ordinary magazine rifle, the recoil of the barrel is shortened by turning a ring a<11>, Figs. 11 and 20, mounted on the barrel, so as to bring a stop a<12> on the ring in line with a fixed stop-piece a<14>. Stocks.-The fore-end stock is fastened to the butt-stock by means of the transverse spring pin b, Figs. 11 and 19, which is adapted to engage with apertures in the butt-stock. Reference is made in the Provisional Specification to Specificitions No. 6628, A.D. 1898, and No. 21,630, A.D. 1902.