A nail press structure of a nail ejection gun includes a frame body having a nail outlet seat, and a nail magazine. The nail magazine includes an L-shaped magazine plate assembled with a magazine seat, such that a plurality of nails may be received in the space defined between the magazine seat and the magazine plate. The magazine seat is formed with a plurality of magazine grooves, and the magazine plate is formed with a hollow plate locked on the magazine seat. A plurality of elastic members are placed between the magazine seat and the magazine plate. A plurality of nail press members are respectively placed in the magazine grooves, located between the magazine seat and the elastic member, and are pressed by the elastic members.
A tacker for driving fasteners (11) into an object (14), which optionally consist of U-shaped staples or nails, has a driver (13) which in an ejecting motion ejects a fastener (11) and drives it into the object (14). Catches (19b) are arranged to prevent a nail (11) fed to an ejecting position from tilting to an inclined position which significantly deviates from the direction of ejecting/driving in. The catches (19b) are movable between a first position in which they extend into the path of the ejecting motion of the driver (13), and a second position in which they are moved away from this path against spring action. Each catch (19b) is formed don a tongue (19) which is punched in a plate (18) and bent to L shape, one L leg (19b) of the tongue extending perpendicular to the plane of the plate and forming the catch and the other L leg (19a) being positioned in the plane of the plate and forming a part which in a resiliently yielding manner supports the catch. The perpendicular L leg (19b) of the tongue (19) has a ramp surface (19c) for cooperation with the driver (13) such that the catch is moved away against spring action to its second position directly or indirectly by the driver during the ejecting motion thereof.
A device for preventing short nails of a nailing gun from being deadlocked includes a slot-sealing member provided under the gunpoint of a nailing gun. The slot sealing member has its topside formed with an elongate slot sealing portion for sealing up the front slot of the nail row inlet of the gunpoint when the slot sealing member is pushed inward, preventing a short nail from being deadlocked when it is struck in a work. When the slot sealing member is pushed outward, its sealing portion will be moved away from the front slot of the nail inlet to completely open the nail row inlet for facilitating loading a long nail formed in a row in the gunpoint, unnecessary to disassemble the slot sealing member from the gunpoint when a row of long nails and short nails are loaded alternately, and easy and quick in operating.
A jam-resistant tacker apparatus is invented, comprising a slit for engagement with an upper pin at the upper ends of a plurality of pin guides mounted to a magazine cover and forming a seating recess for receiving the upper pin at a predetermined position of the magazine so that the forward and backward movement range of the pin guides is increased, and by providing a spring having less elasticity than the spring of a pusher at the upper rear ends of the plurality of pin guides so that a tacker pin and the pusher can be guided while remaining in close contact. The present tacker apparatus is able to prevent of the problem of jammed tacker pins, by applying a horizontal elasticity for stably guiding the tacker pin horizontally in addition to an upward elasticity for moving the tacker pin upward.
