Abstract: A follow block structure of a magazine for stapling guns adapted for use in a fastener feed structure of a stapling gun, the magazine including a slide groove along which a follow block may slidably displace. The follow block includes a pull tab extending from one side thereof, a recess at a central portion thereof for mounting a slide element. The slide element is insertably fitted to the follow block to aid the follow block in slidable displacement along the slide groove to push fasteners forwardly. The slide element is made of engineering plastics so that there is a relatively small friction coefficient when it slides along the slide groove which is made of aluminum alloy. The slide element has good wear resistance and can ensure the smooth displacement of the follow block. Besides, the slide element can be easily and conveniently replaced when worn so that maintenance cost is reduced.

Abstract: A no-idle-striking structure for nailing machines including a strike assembly, a bumper bar, a magazine, and a follow plate. The bumper bar is provided with a hook which may extend into a magazine support. The follow plate has a stop portion. When there are nails in the magazine, the bumper bar is in normal state so that pulling of the trigger will cause a nail to be driven into a workpiece. But when the nails are used up, the follow plate will elevate to the position of the magazine support so that its stop portion will restrain the hook of the bumper bar from displacing rearwardly. As a result, pulling of the trigger will not effect any striking.

Abstract: A nail track and nail output head arrangement which includes a nail track having a longitudinal nail guide wall, the nail guide wall having a side lug and a flanged to notch, and a nail output head having an integral mounting plate at an inner side and defining a substantially U-shaped nail output port, the mounting plate having two parallel lugs perpendicularly disposed adjacent to one end of the U-shaped nail output port and bilaterally pivoted to the lug of the nail track, an upright locating plate surrounded by the U-shaped nail output port and forced into engagement with the notch of the nail track, and a nail guide plate perpendicularly disposed adjacent to an opposite end of the U-shaped nail output port.

Abstract: The improved trigger structure for nailing guns includes a substantially C-shaped pin having a longer arm and a shorter arm; a trigger having two upright side plates each of which has a first lug with a pivot hole at a top end thereof for pivotally connecting the trigger to a gun body and a second lug with a pivot hole at a bottom end thereof for receiving the longer arm of the pin, and a trigger element having an upright plate body with two opposite lugs. Each side plate has a first curved indentation at a suitable position between the first lug and the second lug for mounting the shorter arm of the pin. A second curved indentation is provided at a bottom edge of each of said side plates for receiving and hence positioning the shorter arm of the pin.

Abstract: A magazine assembly for a pneumatic staple gun, including a magazine base, a mounting plate fixedly secured to the magazine base having one end covered over the bottom side of the magazine base and an opposite end connected to the gun body of the pneumatic staple gun, a magazine cover covered on the magazine base at one side, a hooked stop plate fixedly secured to the rear end of the magazine base, an end block fixedly secured to the rear end of the magazine cover, and a constraint member turned about a pivot on the end block and having a lever at one end supported on a return spring and a hook at an opposite end detachably hooked up with the hooked stop plate.

Abstract: A nailing depth adjusting mechanism for a pneumatic nail gun is described. The mechanism includes a firing control strip fastened to the gun body which releases the firing pin of the pneumatic nail gun. The firing control strip has two parallel lugs and a toothed adjusting wheel disposed between the lugs. The wheel has a longitudinal axially internally threaded hole and holes are provided in the lugs. A safety bar is provided having a threaded rod at one end. The rod is inserted through the lugs and threadedly received in the hole in the adjusting wheel. The end extending from the wheel is received in a socket which, in turn, is received in a hole through one lug. A compression spring is provided between the adjusting wheel and the opposite lug. Rotation of the wheel then displaces the threaded rod within the mechanism and, in turn, moves the safety bar.

Abstract: An exhaust hood mounting structure for pneumatic nail guns, including an exhaust hood mounted on the exhaust port of a pneumatic nail gun and having a center countersunk hole, a locating cup mounted within the center countersunk hole on the exhaust hood and having a center through hole, a screw inserted through the center through hole on the locating cup and the center countersunk hole on the exhaust hood and then threaded into a screw hole on the pneumatic nail gun within the exhaust port, wherein a corrugated spring is mounted around the screw and retained between the exhaust hood and the locating cup for permitting the exhaust hood to be turned round the screw to the desired angle by hand and retained in the adjusted position when released from hand.

Abstract: A single-shooting/continuous-shooting control switch installed in a pneumatic nail gun for controlling the firing of nails, the control switch including a first valve seat connected to a pneumatic pressure source, a second valve seat connected between the first valve seat and the firing pin of the pneumatic nail gun, a first valve rod moved by the trigger of the pneumatic nail gun to control the air passage between the first air valve seat and the second air valve seat, a second valve rod moved by the trigger of the pneumatic nail gun to control the air passage between the second air valve seat and the firing pin, and a stop block turned about the first valve rod between between a first position for letting the first valve rod be lifted by the trigger to stop the passage between the first air passage and the second air passage for a single-shooting operation, and a second position to stop the trigger from lifting the first valve rod for letting pneumatic pressure be continuosuly drawn from the first air valve