A hand-held staple gun comprises a housing, a driver, a spring means, a handle, and a safe actuation mechanism. The safe actuation mechanism includes a swing means, a link, and an actuation control rod. The swing means is pivotally secured to the housing and the link is pivotally connected with the swing means. When the staple gun is not in use, the link cannot engage the driver even if the handle is pressed down, and when the staple gun is in use, the actuation control rod is pressed upward into the housing, so that the actuation control rod pushes the swing means, making the link engage the driver and therefore possible to drive staples out of the staple gun when pressing down of the handle.
A safety is incorporated in a nailing device, which ensures operation safety of the nailing device. The nailing device includes a housing containing a striker plate movable to a ready-to-strike position for subsequently striking a nail. The safety includes a retainer having an inclination engageable with a mated inclination formed on a release plate that is normally biased to partially project out of the housing, so that a stop of the retainer is set at a position to block the striker plate from moving toward the ready-to-striker position. When the nailing device is properly set on a work piece, the release plate is forced by the work piece back into the housing and the retainer is rotated by the camming action between the mated inclination faces so as to move the stop aside to allow the striker plate to move to the ready-to-strike position.
