A hammer-type stapler in which the staple driving element and the staple drive track defining structure are constructed and arranged with respect to the frame structure to move through a drive stroke incident to an operator grasping a handle portion and manually impacting the staple drive track defining structure on a workpiece. The direction of guided movement of a staple stick along the staple feed track is at an angle greater than 90.degree. with respect to the direction of the drive stroke of the staple driving element within the staple drive track, the arrangement being such that the leading staple will be driven into the workpiece in the direction of the drive stroke enabling the hand grip portion to be positioned for manual gripping so that the knuckles are spaced from a flat workpiece surface in which a staple has been driven generally perpendicularly therein.
A hammer-type stapler in which the staple driving element and the staple drive track defining structure are constructed and arranged with respect to the frame structure to move through a drive stroke incident to an operator grasping a handle portion and manually impacting the staple drive track defining structure on a workpiece to arrest the movement of the drive track structure on the workpiece while the frame structure and the staple driving element continue to move toward the workpiece with respect to the arrested drive track structure. The staple driving element is constructed and arranged with respect to the frame structure and the drive track structure such that the continued movement of the staple driving element toward the workpiece with respect to the arrested drive track structure is further and faster than the continued movement of the frame structure toward the workpiece with respect to the arrested drive track structure enabling the staple driving element to effect a drive stroke through the drive track and to drive a staple therein into the workpiece while the frame structure is undergoing a relative movement with respect to the drive track structure which is less than substantially equal to the relative movement of the staple driving element with respect to the drive track structure during the drive stroke of the staple driving element.
The present invention is a fastener driving device for driving brads or staples into a workpiece. The device comprises a main body structure and magazine assembly for receiving a fastener package containing a plurality of fasteners connected together. The fasteners are staples or brads. The main body structure includes a drive track for receiving a lead fastener. A reciprocating driving structure moves through a fastener driving cycle including (1) a drive stroke and (2) a return stroke. The magazine assembly is constructed and arranged such that the lead fastener remains connected to the package until the driving structure engages the lead fastener and separates it during the drive stroke. The magazine assembly includes a movable interior fastener supporting structure and an exterior fastener guiding surface constructed and arranged to support a brad package. The interior fastener supporting structure is constructed and arranged to support a staple package when the device is being used to drive staples. The movable interior fastener supporting structure is configured to apply force in the direction of the exterior fastener guiding surface to provide tightened engagement of the brads in the brad package and thereby prevent undesired movement of the brad package in the driving direction in response to the driving structure engaging the lead brad during the driving stroke.