| 摘要 |
A fastener driving tool comprising a tool housing a barrel mounted for axial displacement in the front portion of the housing, a cartridge chamber at the rearward end of the barrel, a breech member positioned within the rear portion of the housing, a cartridge ejector carried by the breech member, an ejector catch on the ejector arranged to engage the rear of the cartridge in the rearwardly displaced ready-to-fire position of the barrel, and a firing pin mounted for displacement within an axial bore through the breech member and arranged to be thrust forward by spring action, prevents rupturing of the cartridge upon firing by using the firing pin itself to prevent any movement of the cartridge ejector at the moment of detonation. The ejector is preferably a plate having a projecting catch and a bore therethrough into which the firing pin penetrates to block lateral movement of the ejector plate.
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