| 摘要 |
<p>The trip mechanism makes it possible, by means of an appropriate fire selector, to fire either a single shot or controlled bursts comprising three or more shots every time the trigger of the firearm is pulled.</p><p>It can be fitted to any firearm.</p><p>The mechanism comprises a ratchet wheel (3) pivoted on the receiver (4) of the firearm and having a plurality of trip teeth (24), (25), (26) corresponding to the number of shots to be fired with a burst, adapted to engage a trip tooth (27) carried by the trigger (1).</p><p>The ratchet wheel (3) is also provided with a corresponding number of lugs (28), (29), (30) adapted to engage a tongue (31) pivoted on the bolt (2) by means of a pin (32).</p><p>A bolt stopping element (2) pivoted on the receiver (4) of the arm has a first trip tooth (19) adapted to co-operate with a catch (20) on the boh (21) and a second trip tooth (13) disposed at an end of an arm (9) pivoted on the trigger (1) and biased by a spring (10) with its other end againstthe pin (5) ofthetrigger (1).</p><p>This pin has a flat section (6) and is connected to a control member (7) exterior to the arm by means of which the pin (5) can be brought from a position in which it abuts the arm (9) by means of its cylindrical surface to a position in which it abuts the arm (9) by means of its flat section (6).</p> |
