| 摘要 |
A line thrower, of the type firing a blank cartridge to propel a projectile fitting over the end of the gun barrel for carrying the end of a light line, has a rearwardly projecting pistol grip with a spring biased firing pin therethrough. A shoulder stock attachment therefor has a tubular receiver for the launcher pistol grip and a trigger mechanism therein enabling the launcher to be fired with one hand. A tube extending to a shoulder pad slideably contains a two part trigger bolt which is spring biased forward. The bolt front portion has a pendant trigger secured thereto forward of a downwardly projecting hand grip secured to the tube. The rear bolt portion is axially aligned with the front portion but is secured rotatably thereto and has a radially projecting sear pin normally projecting upward through a slot in the tube, the pin end being adapted to engage the forward surface of a nut at the end of the launcher firing pin when it is drawn back. The slot extends angularly to the tube axis so that when the trigger bolt is drawn rearwardly the rear bolt portion is rotated by the sear pin being cammed laterally to release the firing pin firing the launcher.
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