Abstract: An improved magazine assembly for stapling guns includes a magazine housing, a housing cover, and an elastic follow member. The magazine housing has two plate surfaces. At one plate surface there is provided a series of track blocks along the length of the magazine housing. A nail exit is formed at the magazine housing near the machine head. A vertical slot is formed in the magazine housing parallel to the track blocks. The elastic follow member is installed within the magazine housing and includes a push plate and a spring connected to the push plate. The push plate lies against the track blocks and displaces along their surface, and further extends through the vertical slot to the other plate surface of the magazine housing to form a bent trigger plate. The trigger plate has a hook that hooks one end of the spring. The other end of the spring is secured at the bottom end of the magazine housing. The housing cover is transparent and is disposed on the magazine housing where the track blocks are provided.

Abstract: A torque adjustment control mechanism connected between the motor housing base and chuck of a hand drill and controlled to adjust its output torque, including a connecting barrel connected to the motor housing base, a coupling member mounted within the connecting barrel and coupled to the motor housing base, a holder base fixedly secured to the connecting barrel, and adjustment cap threaded onto the front neck of the holder base to hold an index ring on the inside, and a plurality of holding down spring devices mounted in respective longitudinal through holes on the holder base and stopped between the coupling member and the index ring, wherein the output torque of the hand drill is adjusted by changing the holding down pressure of the holding down spring devices by turning the adjustment cap forwards or backwards relative to the holder base.

Abstract: A safety device for a stapling gun including a first switch button having an end pivotally mounted on a housing of a stapling gun, another end of the first switch button having a recess formed with a vertical rod on which is fitted a first spring, an inner side of the housing being provided with an inverted U-shaped member which is located right above the recess, the first spring being arranged between the recess of the first switch button and the inverted U-shaped member, a lower side of the first switch button having a groove, an intermediate portion of the first switch button being formed with a vertical passage which is in communication with the groove, a second switch button being pivotally connected with an end of the first switch button, a second spring being installed to push the second switch button to go outwardly from the groove, the second switch button being contoured to fit into the groove and having a protuberance adapted to fit into the vertical passage, a shaft fitted fitted within the vertic

Abstract: This invention relates to a mechanism for controlling rotational direction of a direct current motor and a applying brake thereto and in particular to one including a cathode connected to a negative pole of a battery, an anode connected to a positive pole of the battery, a first directional electrode connected to a negative pole of a motor and normally contacting a brake conducting plate, a second directional electrode connected to a positive pole of the motor and normally contacting the brake conducting plate and a switch which cannot be pressed down before moved sidewards and will, when pressed, cause the first directional electrode to separate from said brake conducting plate on one hand but contact the cathode or anode on the other hand, and to cause the second directional electrode to separate from the brake conducting plate on one hand but contact the anode or cathode on the other hand and will, when released, cause the first directional electrode to contact the second directional electrode via the brak

Abstract: This invention relates to an electric drill with speed and torque control and in particular to one which utilizes a single adjuster ring to control output speed and torque. When the adjuster ring is turned, the transmission axle will engage with another gear thereby changing the output speed. Further, in the meantime, the force exerted on the driven gear will be changed to adjust the output torque. The clutch and the driven gear are engaged by means of steel balls received in the recesses thereof.

Abstract: This invention relates to an electric stapling gun with auto-reset, energy-saving and shock-absorbing functions and in particular to one utilizing a lobe of a cam to press a second link rod to turn on a micro-switch once again so as to avoid the dead point of a prior art stapling gun. Further, a spring with different pitches at both ends is used to reduce the work required for producing same momentum on a staple in comparison with the prior art thereby saving energy. In addition, the stapling gun is provided a metallic protective ferrule for keeping the housing of the stapling gun from being damaged.