A trigger-operated staple tacking device comprises a body and an operating handle pivotally connected at one end to the body, operation of the trigger to actute a staple driving mechanism of the device being effected by squeezing the other end of the handle and the body together against the action of a return spring operative to return the handle to a position projecting from the body. The body has a recess to receive the handle when the device is not in use, a movable catch on the handle co-operating with a clip on the body to hold the handle in the recess. The staple driving mechanism comprises a linearly movable staple driving blade and resilient means extending transversely of the path of movement of the blade and biasing the blade towards a staple ejection slot, the blade being movable by the trigger out of the staple ejection slot against the action of the resilient means whereby the blade is driven to eject a staple upon release of the blade by the trigger.
A hand-operated stapler, particularly for stapling small stacks of paper or similar objects of paper, includes a base plate having two opposite ends and side parts disposed at one of the ends. A die plate is disposed at the other of the ends. A body is pivotably supported by the side parts. The body has a magazine with a center channel for receiving and guiding a strip of staples and guide ribs disposed substantially at right angles to the center channel. A push blade is guided by the guide ribs for sliding up and down to release and drive in the staples. A top part partly covers the body and acts as an operating arm. A locking and release device for the push blade is operated by the top part. The locking and release device has a pivotable latch being disposed between the top part and the body and is releasably joined to the push blade for intermittently locking the push blade in a locked position relative to a staple in the strip and for releasing the push blade in an unlocked position. The locking and release device has a spring supported on the push blade which is tensed when the unlocked position is attained for effecting a sudden release of the push blade.
A manually powered fastening tool that stores and instantly releases the energy of a spring such that it forces a staple or other fastener into an object by an impact blow, wherein the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. A staple ejecting plunger is unstably linked to spring actuating levers such that with the removal of a light holding force, the plunger and actuating levers are de-linked. The tool housing comprises a cantilevered rear profile.
A simplified fastening tool which uses the energy stored in a spring to install fasteners by an impact blow is disclosed. A housing body is preferably cast or molded. A one-piece plastic hand lever is pivotably attached to the body where the pivoting action is by sliding in a circular arcuate channel. A staple feeding track is slidably mounted to the bottom of the housing and includes a rear end element with forwardly extending resilient latching elements to secure the track. A hand grip opening extends forward up to the plunger and the hand lever is hinged at the rear of the housing.
A simplified fastening tool which uses the energy stored in a spring to install fasteners by an impact blow is disclosed. A housing body is preferably cast or molded. A one-piece plastic hand lever is pivotably attached to the body where the pivoting action is by sliding in a circular arcuate channel. A staple feeding track is slidably mounted to the bottom of the housing and includes a rear end element with forwardly extending resilient latching elements to secure the track. A hand grip opening extends forward up to the plunger and the hand lever is hinged at the rear of the housing.
An impact stapler (100) includes an actuator mechanism (110) comprising a firing lever (180) pivotally mounted on a stapler housing (102) and operable by an operating lever (160) for raising a striker (112) against the bias of an actuator spring (240). The firing lever (180) has a front tip (190) which is positioned to engage a tab (272) on the striker (112) when the operating lever (160) is actuated to raise the striker (112) and which is shifted laterally to disengage the front tip (190) from the tab (272) to release the striker (112) for actuation by the actuator spring (240) after the striker (112) is raised. The impact stapler (100) includes a resilient finger (292) for shifting the firing lever (180) laterally to a rest position with the front tip (190) underneath the tab (272) on the striker (112). A stop (295) engages the firing lever (180 ) in its rest position to limit the bending of the resilient finger (292) and to locate the front tip (190) in a predetermined lateral position relative to the tab (272) on the striker (112).
