GB357130A - Improvements relating to automatic fire-arms - Google Patents

Abstract

357,130. Automatic rifles. KIRALY, P. VON, 12, Kende U, Budapest, and SCHWEIZERISCHE INDUSTRIE - GES., Neuhausen, Schaffhausen, Switzerland. June 11, 1930, No. 17953. Convention date, June 12, 1929. [Class 119.] In an automatic firearm having a sliding barrel and a breech-block locked by being tilted, the slide 8 which effects the tilting is arranged at the side of the breech-block and forms a lateral guide therefor. In the automatic rifle shown, the extension 2, Fig. 1, of the barrel 1 is provided with ribs 4 guided within arms 23, Fig. 7, of a casing 11. The breech-block 5 is guided between the extension 2, a part 20 of the stock and the member 8 which is adapted to slide rearwards independently of the barrel. The slide 8 has projections 9, 10 which engage with inclined surfaces on the breech-block and effect the tilting and the sliding movements thereof. In the locked position, the rear end of the breech-block is tilted upwards by the projection 10 and engages with the end face 3 of an aperture in the barrel extension 2. The casing 11 is slidable longitudinally and is normally locked to the stock 20 by an arm 17, Fig. 9, of a handle 12 pivoted to the casing, which arm is adapted to engage with a projection 22 on the stock. The handle 12 also actuates a pivoted lever comprising an arm 14 which normally engages with a tooth 15 on the stock, and a tooth 24 which is adapted to be moved into engagement with a recess 19 in the breech-block when the handle 12 is moved to retract the casing 11. A projection 18 on one of the arms 23 is adapted to co-operate with a projection on the member 8. Thus, the casing 11, the breech-block 5, and the member 8 may be retracted together to open the breech closure by hand. On firing, a long rearward movement is imparted to the member 8 by a lever 35, Fig. 11, against which strikes a post 34 on the recoiling barrel. A forward extension 39 of the member 8 is engaged by a spring 40 which it compresses on recoiling and which is adapted to return it to its forward position. To prevent accidental unlocking of the casing 20 on firing, the trigger 30 is provided with an upwardly extending arm 31 which, when the trigger is pulled, projects through a recess in the casing and locks the arm 14.