Abstract: In a nailing machine capable of feeding not only wire-connected nails but also nails connected by a plastic sheet into the nail ejecting opening of a nose portion, the nail shank of one of the wire-connected nails is supplied with shifting the nail shank toward the welded portion of the wire-connected nail with respect to the center of the nail ejecting opening. Further, depressions for containing cutoff pieces of the wire-connected nails are formed in the shifted side of the nail shank, and discharging opening for sheet leaves of the nails connected by the plastic sheet is shifted so that the front end of a driver is prevented from hammering the connecting sheet leaf by guiding the connecting sheet leaf in a direction opposite to the direction of shifting the nail shank of the wire-connected nail.

Abstract: A fixing pin is attached to a winding end of a spring attached to a pusher of a nailing machine. A fixing plate with an engaging hole is engaged with the fixing pin from the outside of an opening of a magazine. The fixing pin is guided to a tapering section of the opening by moving the fixing plate in the direction of a nose section of the nailing machine to fix the fixing plate. Further, a magazine has a guide groove for guiding a T-shaped top portion formed at an upper end of the pusher and for guiding head portions of connected nails in an upper portion of a guide path of the pusher and the connected nails. A cover made of iron is attached to the inside of the guide groove. Thickness of a part of the pusher is smaller than the diameter of nail axis portions.

Abstract: An approach prevention wall for preventing a head portion of a lead nail from unnecessarily approaching is protruded on a front inner wall of the nose section of the nailing machine. The nose section accommodates the lead nail of connected nails, and the connected nails are connected with a connecting member. A lower end face of the approach prevention wall is inclined, and the inclined face of the lower end face of the approach prevention wall is formed at a position where the height of the inclined face is substantially the same as that of a position where the connecting member to connect the lead nail with the next nail is cut off at the time of driving the lead nail. Otherwise, the inclined face of the lower end face of the approach prevention wall is formed at a position where its height is higher than that.

Abstract: A fixing pin is attached to a winding end of a spring attached to a pusher of a nailing machine. A fixing plate with an engaging hole is engaged with the fixing pin from the outside of an opening of a magazine. The fixing pin is guided to a tapering section of the opening by moving the fixing plate in the direction of a nose section of the nailing machine to fix the fixing plate. Further, a magazine has a guide groove for guiding a T-shaped top portion formed at an upper end of the pusher and for guiding head portions of connected nails in an upper portion of a guide path of the pusher and the connected nails. A cover made of iron is attached to the inside of the guide groove. Thickness of a part of the pusher is smaller than the diameter of nail axis portions.

Abstract: A fixing pin is attached to a winding end of a spring attached to a pusher of a nailing machine. A fixing plate with an engaging hole is engaged with the fixing pin from the outside of an opening of a magazine. The fixing pin is guided to a tapering section of the opening by moving the fixing plate in the direction of a nose section of the nailing machine to fix the fixing plate. Further, a magazine has a guide groove for guiding a T-shaped top portion formed at an upper end of the pusher and for guiding head portions of connected nails in an upper portion of a guide path of the pusher and the connected nails. A cover made of iron is attached to the inside of the guide groove. Thickness of a part of the pusher is smaller than the diameter of nail axis portions.

Abstract: In a nailing machine capable of feeding not only wire-connected nails but also nails connected by a plastic sheet into the nail ejecting opening of a nose portion, the nail shank of one of the wire-connected nails is supplied with shifting the nail shank toward the welded portion of the wire-connected nail with respect to the center of the nail ejecting opening. Further, depressions for containing cutoff pieces of the wire-connected nails are formed in the shifted side of the nail shank, and discharging opening for sheet leaves of the nails connected by the plastic sheet is shifted so that the front end of a driver is prevented from hammering the connecting sheet leaf by guiding the connecting sheet leaf in a direction opposite to the direction of shifting the nail shank of the wire-connected nail.

Abstract: An approach prevention wall for preventing a head portion of a lead nail from unnecessarily approaching is protruded on a front inner wall of the nose section of the nailing machine. The nose section accommodates the lead nail of connected nails, and the connected nails are connected with a connecting member. A lower end face of the approach prevention wall is inclined, and the inclined face of the lower end face of the approach prevention wall is formed at a position where the height of the inclined face is substantially the same as that of a position where the connecting member to connect the lead nail with the next nail is cut off at the time of driving the lead nail. Otherwise, the inclined face of the lower end face of the approach prevention wall is formed at a position where its height is higher than that.

Abstract: A fixing pin is attached to a winding end of a spring attached to a pusher of a nailing machine. A fixing plate with an engaging hole is engaged with the fixing pin from the outside of an opening of a magazine. The fixing pin is guided to a tapering section of the opening by moving the fixing plate in the direction of a nose section of the nailing machine to fix the fixing plate. Further, a magazine has a guide groove for guiding a T-shaped top portion formed at an upper end of the pusher and for guiding head portions of connected nails in an upper portion of a guide path of the pusher and the connected nails. A cover made of iron is attached to the inside of the guide groove. Thickness of a part of the pusher is smaller than the diameter of nail axis portions.

Abstract: A box nailing machine includes a piston within a cylinder to drive a nail. A main selector valve introduces compressed air into the cylinder and discharges the compressed air from the cylinder. A start operation valve operates the main selector valve. A trigger device for the box nailing machine comprises: a trigger switch operated by a trigger lever; a contact switch operated by the contact arm; an electromagnetic valve serving as the start operation valve; a logical circuit for applying a drive current to the electromagnetic valve when both the trigger switch and the contact switch are turned on; and a controller which includes a timer with a predetermined time limit. The timer is started in accordance with a trigger signal of the trigger switch and prohibits the drive current from the electromagnetic valve when the timer counts the predetermined time period. The timer is reset upon release of the trigger.

Abstract: The operation mode of a nailing machine can be automatically and reliably switched, for its selection, from the successive nailing mode and the one-shot nailing mode and vice versa by changing the order of operating a trigger lever and a contact arm. In the selected mode, the nailing work can be performed. By releasing both the trigger lever and the contact arm, the machine is returned to its initial mode. When the contact arm is moved to the top dead center after the trigger lever is operated, a portion of a slide die comes in contact with the underside of the trigger lever. When the trigger lever is operated after the contact arm is moved to the top dead center, the portion of the slide die comes in contact with the upper side of the trigger lever, thereby preventing a further movement of the contact arm to the bottom dead center.