| 摘要 |
<p>In an explosive charge-driven setting gun which uses a drum type magazine for aligning fastening elements and cartridges with a barrel bore, both the barrel and magazine are axially displaceable into the firing position and are capable of axial movement relative to one another. It is possible for the barrel to be returned to the non-firing position while the magazine becomes jammed in the firing position. To prevent accidental firing of the cartridge in the magazine when the barrel is in the non-firing position, a latch mechanism is provided in engagement with the barrel and the firing pin which prevents the firing pin from igniting a cartridge until the barrel displaces the latch mechanism and releases the firing pin.</p> |
