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In a fastener-driving tool with a magazine, a nosepiece, and a driver blade slidably reciprocating relative to the nosepiece for driving fasteners, a mechanism for preventing jamming includes a follower slidably disposed inside the magazine for urging fasteners toward the nosepiece, and having a for

In a fastener-driving tool with a magazine, a nosepiece, and a driver blade slidably reciprocating relative to the nosepiece for driving fasteners, a mechanism for preventing jamming includes a follower slidably disposed inside the magazine for urging fasteners toward the nosepiece, and having a formation for engaging the driver blade and preventing driver blade reciprocation after the last fastener in the magazine has been driven.

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What is claimed is: 1. A fastener-driving tool comprising: a magazine; a nosepiece having a fastener passage slot configured for receiving fasteners from said magazine and a driver blade path in communication with said slot; a driver blade slidably reciprocating in said path; and a mechanism for pr

What is claimed is: 1. A fastener-driving tool comprising: a magazine; a nosepiece having a fastener passage slot configured for receiving fasteners from said magazine and a driver blade path in communication with said slot; a driver blade slidably reciprocating in said path; and a mechanism for preventing jamming, comprising: a follower slidably disposed inside the magazine for urging fasteners toward the nosepiece, and having an upper surface constructed and arranged for directly receiving the driver blade and preventing driver blade entry into said path after a last fastener in the magazine has been driven, said tool thus allows tool firing and reciprocation of said driver blade when the magazine is empty, but impedes the travel of said driver blade by directly receiving said blade upon said upper surface; said follower includes a first portion configured for engaging a fastener strip, and having a pair of sides, and a second portion including said upper surface; said second portion extends laterally-past said sides of the first portion for guiding said follower in the magazine, said second portion forms a widest part of said follower when viewed from a front of the tool where the magazine abuts the nosepiece; said nosepiece includes a shear block defining a fastener passage slot, and said follower is constructed and arranged to enter the slot after the last fastener is driven; and wherein said shear block has an upper edge, and said second portion slidingly engages said upper edge for supporting said laterally extending second portion against impact generated by said driver blade directly impacting said upper surface. 2. The tool of claim 1 wherein said follower is generally "T" shaped when viewed from the front. 3. The tool of claim 1 wherein said driver blade has a lower end, and in a pre-firing position, once the last fastener is driven, said follower extends into said nosepiece and said second portion is disposed in close proximity to said lower end. 4. The tool of claim 3, wherein after the last fastener is driven, said lower end of said driver blade is approximately 0.025 to 0.1 inch from said second portion. 5. A fastener-driving tool, comprising: a magazine having a first end for receiving fasteners, a second end for delivering fasteners for driving, and a guide channel; a nosepiece defining a fastener passage slot in communication with said magazine for receiving fasteners from said second end and a driver blade path in communication with said slot; a driver blade slidably reciprocating in said driver blade path for driving fasteners; a follower slidably disposed inside said magazine and having a first portion for urging fasteners toward said nosepiece and a second portion having a thickened upper surface configured for directly receiving a lower end of said driver blade and preventing driver blade entry into said driver blade path after the last fastener in a fastener strip has been driven, said tool thus allows tool firing and reciprocation of said driver blade when the magazine is empty, but impedes the travel of said driver blade by directly receiving said blade upon said upper surface; wherein said upper surface of said second portion is displaced in a range of 0.025 to 0.10 inch from a lower end of said driver blade after the last fastener has been driven for reducing impact to said follower when said tool is fired after the last fastener in the fastener strip has been driven; and said nosepiece includes a shear block with an upper edge, and said second portion laterally extends from sides of said first portion and slidably engages said upper edge for supporting said laterally extending second portion against impact generated by operational movement of said driver blade. 6. The tool of claim 5 wherein said second portion is slidably engaged in said guide channel, and has a front edge extending beyond a leading edge of said first portion. 7. The tool of claim 5 wherein said first portion of said follower is aligned with said slot in said nosepiece and extends into said driver blade path after the last fastener has been driven. 8. The tool of claim 5 wherein said second portion is supported in said guide channel and receives a lower end of said driver blade for preventing further linear reciprocation after the last fastener has been driven. 9. A fastener-driving tool, comprising: a magazine having a first end for receiving fasteners, a second end for delivering fasteners for driving, and a guide channel; a nosepiece including a shear block defining a fastener passage slot in communication with said magazine for receiving fasteners from said second end and a driver blade path in communication with said slot; a driver blade slidably reciprocating in said driver blade path for driving fasteners; a follower slidably disposed inside said magazine and having a first portion for urging fasteners toward said nosepiece and a second portion with a thickened upper surface configured for directly receiving said driver blade and preventing driver blade entry into said driver blade path after the last fastener in a fastener strip has been driven, said tool thus allows tool firing and reciprocation of said driver blade when the magazine is empty, but impedes the travel of said driver blade by directly receiving said blade upon said upper surface; said driver blade has a lower end, and in a pre-firing position, once the last fastener is driven, said follower extends into said nosepiece and said upper surface of said second portion is disposed in close proximity to said lower end; and said shear block has an upper edge, and wherein said second portion laterally extends from sides of said first portion and slidingly engages said upper edge for supporting said second portion against movement of said driver blade for reducing impact to said follower when said tool is fired after the last fastener in the fastener strip has been driven. 10. The tool of claim 9, wherein after the last fastener is driven, said lower end of said driver blade is approximately 0.025 to 0.1 inch from said second portion.