| 摘要 |
Firing mechanism plate having immobilised rolling bearings. System G. M. The invention relates to a firing device for all percussion arms, intended to reduce the forces due to friction on triggering. Virtually all friction is replaced by rolling bearing effects. The pin actuating the cock 6 is locked by a rolling bearing 4 which itself bears on a second rolling bearing 10 which bears on the mechanism plate 2 by means of a trigger cone 11 actuated by the trigger and, on the other hand, by the lever 12. When the spring 7 is under tension, the system is armed. Action on the trigger moves the cone to the right which lifts the rolling bearing 10 which rolls on the rolling bearing 4, thereby causing it to move back. The shot leaves when the rolling bearing 10 passes the point of imbalance and is released. The rolling bearing 10 is then returned to the high position by means of the spring 14. This low-wear system, which is very reliable and particularly suited for large-scale manufacture, can be highly miniaturised. It can serve for any precision or high-power triggering, crossbow or all mechanical applications. <IMAGE>
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