Abstract: A fastener driving device comprising a pressure chamber, a first piston, a fastener channel and a second piston. The first piston is coupled to the pressure chamber such that pressurized gas in the pressure chamber causes the first piston to slide from a first position to a second position. The fastener channel is configured to receive a fastener, wherein when moving from the first position to the second position the first piston is configured to engage a fastener and drive it from the device. The second piston is slidable within a sleeve and arranged such that when the first piston slides from the first position to the second position the first piston drives the second piston and compresses gas within the sleeve. Compressed gas in the sleeve biases the first piston towards the first position.

Abstract: A driving tool includes: a body provided with an outlet where a fastener is driven; an urging member attached to the body; and a plunger movable in a projecting direction toward the outlet by extension of the urging member. An urging force in the projecting direction acts on the body from the urging member when the urging member is extended.

Abstract: The holiday light attachment system is an extension structure. The holiday light attachment system includes an elevated anchor, a cable holder, a shaft mount, an extension shaft, and a light string. The cable holder attaches the light string to the elevated anchor. The shaft mount attaches to the extension shaft. The shaft mount is a tool that secures the cable holder to the elevated anchor. The holiday light attachment system attaches the light string to an elevated structure. By elevated structure is meant a surface that is above the reach of an individual. The holiday light attachment system allows the individual to attach the light string to the elevated structure without having to change the elevation of the individual.

Abstract: Various embodiments of the present disclosure provide a workpiece-contact element for a fastener pusher. In one embodiment, the workpiece-contact element includes an attachment side, a workpiece-contact surface, and one or more fastener-exit surfaces defining a fastener-exit throughbore having a longitudinal axis and extending through the workpiece-contact surface. The workpiece-contact surface forms an annular protrusion extending away from the attachment side.

Abstract: A system for presenting media sheets includes a finisher output bin assembly. The finisher output bin assembly includes a translatable output floor, and a guide substrate coupled to the translatable output floor to guide the translatable output floor relative to the guide substrate in at least one coordinate direction. The finisher output bin assembly includes an output structure mechanically coupled to the translatable output floor to drive the translatable output floor relative to the guide substrate.

Abstract: A tolerance ring has a band with outwardly extending corrugated protrusions forming waves that engage an outer surface of a shaft. At one end of the tolerance ring is an inwardly flared guide surface extending axially and radially from the band. The guide surface acts as a tapered entrance to a bore of a housing to assist during assembly.

Abstract: A reactor plate assembly for a fastener dispensing device includes a metal reactor plate mounted onto the distal end of a fixed support arm for the device, the reactor plate including a flattened top surface shaped to define a pair of elliptical, needle-receiving holes. The reactor plate assembly additionally includes a brush anvil removably secured to the underside of the support arm. The brush anvil includes four separate bristle clusters that are retained within associated bores in a block, with a first pair of bristle clusters projecting into one needle-receiving hole and a second pair of bristle clusters projecting into the other needle-receiving hole. Each bristle cluster includes a group of individual nylon bristles, the free ends of the bristles lying flush with the top surface of the reactor plate to provide a planar support surface which can be penetrated by the needles of the device during the dispensing process.

Abstract: Tool enhancements, and related systems and techniques, are disclosed herein. For example, a nail gun may include a trigger; an actuator to drive a nail in response to a pull of the trigger; a sensor to generate data indicative of a property of operation of the nail gun prior to or during driving of a nail, wherein the property is a resistance experienced by the nail as it is driven or an angle at which the nail is driven; monitoring circuitry to determine whether the data generated by the sensor satisfies a predetermined event condition; and an output interface to provide an indicator that the predetermined event condition has been satisfied in response to a determination by the monitoring circuitry that the predetermined event condition has been satisfied. Other embodiments may be disclosed and/or claimed.

Abstract: A powered nailer includes a power source including a driving element reciprocating within a cylinder between a prefiring position and a fastener driving position, the latter occurring when the driving element engages a bumper disposed at the bottom of the cylinder. A reciprocating valve element defines a combustion chamber in fluid communication with the cylinder, and is configured for receiving a dose of fuel and air prior to a user-generated ignition. A return chamber at least partially surrounds the cylinder and is in fluid communication with the cylinder, being configured for receiving a supply of pressurized air generated by the driving element as it moves from the prefiring position to the fastener driving position, the pressurized air acting on an underside of the driving element for returning it to the pre-firing position.

Abstract: Disclosed is a tool for driving a barbed staple into a workpiece, the tool includes a housing enclosing a power delivery source and a driver blade driven by the power delivery source and comprising an engagement portion configured for engagement with the staple. The tool further includes a nosepiece comprising an aperture providing access for loading a staple into the nosepiece and a passage configured for slidable mounting of the driver blade. In use, the driver blade may be driven along a longitudinal axis of the passage by the power delivery source to engage and drive a staple into a workpiece. Clearances are providing to allow for loading and passage of the barbed staples in the nosepiece and arrangements are provided to maintain the alignment of the staple in the nosepiece to compensate for those clearances.

Abstract: A fastener driving workhead unit is provided for performing an operation on spikes of a railroad track having a plurality of ties, and includes a hammer housing configured for accommodating a hammer, the housing being attached to a hammer bushing having a hammer bushing clamp. Also included in the workhead unit is an anvil assembly having an anvil and an extension coupler, the extension coupler being releasably secured to the hammer bushing by fastening the hammer bushing clamp. Further, the workhead unit includes a jaw assembly having a jaw block, the jaw block having at least one jaw block clamp for releasably securing a guide rod to the jaw block by the jaw block clamp, such that the anvil freely reciprocates in the hammer housing for driving the spikes into the plurality of ties.

Abstract: A fastener installation tool including a guide that guides a fastener into a side of a work piece at an angle, while optionally restraining the fastener from wobbling due to rotation, even upon initial entry into the work piece. The guide can define an angled bore including a fastener entrance opening and a fastener exit opening which is adapted to be positioned immediately adjacent the work piece. The guide can include a material ejection port between the openings, through which material bored from the work piece can be evacuated from the angled bore to prevent binding of the material with the fastener. The tool can include a clamp assembly that clamps opposing sides of the work piece to precisely align and steadily hold the angled bore as a fastener is being installed in a side surface. Related methods of using the tool to install fasteners also are provided.

Abstract: A fastener driving apparatus includes a vacuum piston and a drive piston, which vacuum piston, when moved (by way of a motor and linear motion converter), draws a vacuum against the drive piston, which drive piston may be held in place by retention means. An anvil is coupled to the drive piston. The retention means is released electrically or mechanically at or near the point of maximum vacuum volume. This drive piston and anvil assembly is then driven by atmospheric pressure and may strike a fastener to drive it into a substrate. At least one position sensor may be used. Once the fastener is driven, the apparatus may reset to an initial position. At least one parasitic loss seal may be provided to reduce drag force on the drive piston, and a timed dwell may be provided for the vacuum piston for operation.

Abstract: Tooling intended for fixing hooks connecting the ends of belt conveyors including a fixed lower part forming an anvil linked to a movable upper part by positioning and centering fingers, a main punch, and a complementary punch. The main punch includes a head provided with enlarged parts and can slide in a vertical channel. The complementary punch can slide in a vertical channel. A vertical guiding groove staple is arranged on the side of the complementary punch. A pneumatic hammer provided with a head hammers the main punch which drives the staple in and drives, or hammers, the complementary punch which simultaneously hammers the upper of the hook.

Abstract: An electric hammer has a housing having a nozzle portion, a motor and a transmission mechanism arranged in the housing, a striking device, coupled to the motor and transmission mechanism, for moving in a reciprocating manner in the nozzle portion, and a clamping device mounted to the nozzle portion and at least partially extending out of the nozzle portion. The clamping device includes an outer sleeve, an inner sleeve arranged in the outer sleeve, and at least two clamping members arranged on the inner sleeve. The inner sleeve has a first position and a second position with respect to the outer sleeve and the distance between the two clamping members in the first position is less than the distance between the two clamping members in the second position to thereby allow a nail to be released halfway, i.e., when partially struck into a workpiece, in a simple manner.

Abstract: A stapler may generally include a main body having a front side and a bottom side extending from the front side, a staple discharge opening being defined on the bottom side proximate the front side; and a staple puller projecting from the front side.

Abstract: A tool for driving a fastener pin into a substrate to secure a fastener body to the substrate for fixing insulation or other cladding, the tool being of the type comprising a fastener guide and a driving piston driven along the fastener guide by gas pressure to engage and drive the pin, the fastener guide being displaceable axially inwardly relative to the body of the tool in order to cock the tool for firing of the driving piston, wherein the tool comprises means for enabling the tool to push the fastener body through insulation or other cladding into engagement with the underlying substrate without putting the tool into a condition in which firing can occur, the tool being thereafter able to be put into a condition to permit firing to take place.

Abstract: A circular stapling device includes a circular anvil assembly and a circular cartridge assembly. The anvil assembly includes a cap and head. The cap is movable relative to the head. The head supports a crush ring member that is movable into engagement with the cap to move the cap to an unapproximated position relative to the head to release a portion of an anvil buttress member supported between the anvil cap and the anvil head. The cartridge assembly includes a housing, a pusher member, a retaining ring member, and a fastener cartridge. The retaining ring member releasably secures a portion of a cartridge buttress member to one or both of the housing and the fastener cartridge. The retaining ring member releases the cartridge buttress member when the retaining ring member moves from a radially constricted condition to a radially expanded condition in response to a movement of the pusher member.

Abstract: An anvil assembly includes a circular anvil head that supports a crush ring, an anvil cap that supports an o-ring, and a circular anvil buttress member. The cap connects to the head and is movable relative to the head between approximated and unapproximated positions. The crush ring is spaced from the cap when the cap is in the approximated position and movable into engagement with the cap to move the cap to the unapproximated position. The buttress member includes a body portion and an extension portion. The body portion is supported on the head and the extension portion is secureable between the o-ring and the head when the cap is in the approximated position. The extension portion is releasable from between the o-ring and the head when the cap is disposed in the unapproximated position so that the body portion separates from the head.

Abstract: A floor stapler shoe used in the installation of hardwood floors includes a shoe body and a pair or more antifriction components. The shoe body is designed to receive and connect with a floor stapler. One of the pair of antifriction components contacts a tongue of a floor board when in use, and the other of the pair of antifriction components contacts an upper surface of the floor board when in use. The antifriction components can be a bearing, a pad composed of antifriction material, or both.

Abstract: A stapler comprising a base, a cartridge in pivotal relation to the base at a cartridge pivot axis, the cartridge configured to contain at least two rows of staples and a lever arm in pivotal relation to the base at a lever pivot axis. In an embodiment, the device includes a moveable driving member for selectively positioning the driving member in driving relation to each of the at least two rows for driving staples from the at least two rows. In operation, this invention permits an individual to load a stapler with multiple sized staples. This eliminates the need to continuously load and unload different sized staples from a single row stapler.

Abstract: Accessories for a fastener driving apparatus are disclosed, which accessories may be removably attached to a fastener driving apparatus. An extension accessory increases the length of reach of a fastener driving apparatus by including an extension rod and further improves accuracy with regard to driving a fastener into a substrate via a fastener retention mechanism. A chisel accessory provides added versatility for a fastener driving apparatus by including a chisel tool function in addition to a fastener driving function. A fastener setting accessory improves fastener driving ease and accuracy by driving fasteners presently in a substrate to a specific depth. The accessories are specifically designed to transmit an uninterrupted force from the fastener driving apparatus to a fastener or chisel for driving a fastener into or otherwise impacting or striking a substrate.

Abstract: The present invention relates to a powered stapling device and, more specifically, but not limited to, a powered stapling device for driving staples over a strip of linear material, such as a cable located in an otherwise inaccessible or difficult to reach place. The stapling device includes an actuation mechanism, a handle, a staple ejection mechanism, and a drive arm operable along a primary axis of the stapling device. The actuation mechanism provides energy to the drive arm, which in turn engages the staple ejection mechanism, which in turn drives the staple. At least a portion of the staple engagement mechanism may be positioned at an angle with respect to the primary axis. This configuration of the staple engagement mechanism allows the stapling device to drive the staple at an angle relative to the linear object being stapled, even when the primary axis of stapling device is aligned substantially parallel or substantially perpendicular to the linear object being stapled.

Abstract: Nailing device (1), comprising a housing (2), a nail cartridge (5), a setting mechanism for the setting of the nails, a bolt guiding element (6) for placement on the object (16) into which the nails are to be introduced, so that the bolt guiding element (6) is used for the setting of the nails and for the support for the nailing device, a trigger (7) for the activation of the setting mechanism, a supporting foot (8) for the additional support of the nailing device (1); it should be possible to drive the nails into the object (16) without a special alignment of the nailing device (1) by the operator, essentially vertically relative to a hypothetical object plane (17) spanned by the surface of the object (16) into which the nails are driven. This goal is attained in that the supporting foot (8) is provided with two supporting elements (9, 10) for a two-point contact, so that the nailing device (1) together with the bolt guiding element (6) has a three-point contact.

Abstract: A quick-clamping mechanism for an electric hammer for clamping fasteners such as nails includes a biasing assembly for making the clamping assembly movable between a closed position and an opened position. The clamping assembly includes at least two clamping claws, pivotally connected to a pivot shaft including the combination of a torsion spring and a magnet. Fasteners such as nails and the like, can be clamped or released by the two clamping claws rotating relative to the pivot shaft, so that the quick-clamping mechanism has a simple structure and is easily implemented. The two clamping claws can be automatically closed, after a nail is loaded, by providing a torsion spring or a magnet on the two clamping claws, so that the quick-clamping mechanism can be operated expediently and the nail clamped securely.

Abstract: A fastener installation tool including a guide that guides a fastener into a side of a work piece at an angle, while optionally restraining the fastener from wobbling due to rotation, even upon initial entry into the work piece. The guide can define an angled bore including a fastener entrance opening and a fastener exit opening which is adapted to be positioned immediately adjacent the work piece. The guide can include a material ejection port between the openings, through which material bored from the work piece can be evacuated from the angled bore to prevent binding of the material with the fastener. The tool can include a clamp assembly that clamps opposing sides of the work piece to precisely align and steadily hold the angled bore as a fastener is being installed in a side surface. Related methods of using the tool to install fasteners also are provided.

Abstract: A fastener driving apparatus includes a vacuum piston and a drive piston, which vacuum piston, when moved (by way of a motor and linear motion converter), draws a vacuum against the drive piston, which drive piston may be held in place by retention means. An anvil is coupled to the drive piston. The retention means is released electrically or mechanically at or near the point of maximum vacuum volume. This drive piston and anvil assembly is then driven by atmospheric pressure and may strike as fastener to drive it into a substrate. At least one position sensor may be used. Once the fastener is driven, the apparatus may reset to an initial position. At least one valve may be included to dump the energy stored in the vacuum in the case of a jam condition, thus providing good safety profile.

Abstract: A location marking device is disclosed. An example location marking device includes a drive tube to receive a wire of a marker flag to be installed. The location marking device also includes a plunger rod slidably held within the lumen of the drive tube and operable between a passive state and an active state. The location marking device also includes a handle provided to a proximal end of the plunger rod and movable toward and away from a proximal end of the drive tube. The location marking device also includes a return rod extending from the handle towards a distal end of the drive tube. The location marking device also includes a resilient member configured to bias the plunger rod in the passive state.

Abstract: An electric hammer includes a striking device having a clamping mechanism. The clamping mechanism includes a clamping element, a sliding element, a first biasing device and a second biasing device. The sliding element is provided with a guide portion in which the clamping element is slidable between a first position where the clamping element is closed and a second position where the clamping element is opened. The biasing force generated by the first biasing device is smaller than that of the second biasing device when the clamping element is in the opened position.

Abstract: The present disclosure describes embodiments of a construction apparatus, or tool, that can drive and remove fasteners (e.g., staples). These embodiments have a handle portion, a head portion, and a fastener guide that orients the fastener in a ready-to-be deployed state. Actuation of the head portion can transmit a driving force to the fastener, thereby moving the fastener from the ready-to-be deployed state to a deployed state, which in one example drive the fastener into a target object (e.g., a board). The construction apparatus can also come equipped with a remover element that can transmit a removal force applied to the construction tool to the fastener. In one embodiment, the construction apparatus finds particular use with electrical staples, as the proposed designs can prevent damage to electrical cables, prevent the end user from striking his hand and fingers, and eliminate the need for carrying and/or using additional tools to mount and remove staples.

Abstract: A staple gun tacker includes a wire guide mechanism in its forward end which includes a wire guide plate having a recessed lower end for engaging a wire when the plate is in an extended position and a rotatable cam for moving the plate between extended and retracted positions which includes a circular slot formed therein having one end thereof located closer to the axis of rotation of the cam then the other receiving and engaged with a projection on the cam plate so that rotation of the cam is translated into linear movement of the wire guide plate.

Abstract: A driving tool with tool portion and a gas delivery system. The tool portion includes a linear pneumatic motor that is configured to propel a driver blade. The gas delivery system is configured to deliver a pressurized gas, such as compressed air or nitrogen, to the tool portion for use in operating the linear pneumatic motor. The gas delivery system includes a first inlet, which is connectable to a first source of compressed gas, such as a stationary air compressor, a second inlet, which is connectable to a second source of compressed gas, such as a tank mounted to the tool portion, and a directional valve for selecting between the first and second inlets.

Abstract: A wheeled stapling apparatus which automatically staples various materials such as felt paper and rolled roofing as it is rolled across a surface is herein disclosed. The apparatus comprises an adjustable handle allowing the user to walk behind as the apparatus is rolled upon a horizontal or sloped surface. The stapling action is activated by a trigger located at the upper portion of the handle. The apparatus drives the staples into the surface at user selected distance intervals, set using a selector knob on the top of the apparatus body. The apparatus is powered by an easily replaceable rechargeable battery.

Abstract: A driving tool may include a driven member holding mechanism configured to hold the driven member at a driving position inside a driver guide until a driver drives the driven member.

Abstract: A fastening machine 1 is provided, which prevents the tip member 131 from wear and improve its durability as well as align a material into which a fastener is to be driven. The fastening machine 1 is provided with a housing 2, a handle 2A extended from the housing 2, a nose 3 extended from the housing 2 and comprising an ejecting mouth 6 to fire a fastener 25 and a tip member 131 arranged at the tip of nose 3 in the direction of ejecting the fastener 25. The tip member 131 is characterized by comprising a super-hard material member 19 in the side facing a material into which a fastener is to be driven and in the side opposite to the direction of extending the handle 2A.

Abstract: A cartridge assembly is disclosed. The cartridge assembly includes a channel and a removable assembly in releasable engagement with the channel. The removable assembly includes a cartridge body and a support plate. The cartridge body includes an engagement structure disposed adjacent a proximal end thereof. The support plate is configured to mechanically engage the cartridge body and includes an engagement structure disposed adjacent a proximal end thereof. The engagement structure of the cartridge body is configured for longitudinal alignment with the engagement structure of the support plate. The engagement structures of the cartridge body and the engagement structure of the support plate are configured to mechanically engage the engagement structure of the channel when the removable assembly is engaged with the channel.

Abstract: The present invention relates to a powered stapling device and, more specifically, but not limited to, a powered stapling device for driving staples over a strip of linear material, such as a cable located in an otherwise inaccessible or difficult to reach place. The stapling device includes an actuation mechanism, a handle, a staple ejection mechanism, and a drive arm operable along a primary axis of the stapling device. The actuation mechanism provides energy to the drive arm, which in turn engages the staple ejection mechanism, which in turn drives the staple. At least a portion of the staple engagement mechanism may be positioned at an angle with respect to the primary axis. This configuration of the staple engagement mechanism allows the stapling device to drive the staple at an angle relative to the linear object being stapled, even when the primary axis of stapling device is aligned substantially parallel or substantially perpendicular to the linear object being stapled.

Abstract: An apparatus for installing a hidden fastener in the course of attaching a plank to a joist includes a power tool with a retainer for holding the hidden fastener. The hidden fastener is placed on the retainer so that an attachment opening formed through the hidden fastener is in registration with a bore formed in the retainer for receiving a securing member. The power tool is used to position the hidden fastener in engagement with the plank, and to drive a securing member from the bore of the retainer through the attachment opening of the hidden fastener.

Abstract: A method utilizing a device capable of mounting an anchoring pin and then inserting the pin into the ground or other penetrable surface includes a hand-graspable elongate handle having an upper under and a lower end and a magnetic puck assembly fixed to the handle lower end for picking up an anchoring pin and maintaining in an insertion position until the pin is inserted into the ground. The method can be used to insert marker pins, or pins for retaining materials on a surface, such as the surface of an erodable waterway.

Abstract: Fastening tool for driving a fastener such as a staple into a substrate a predetermined distance. The tool includes a housing and a driver reciprocally mounted in the housing and moveable with respect to the housing, the driver having a driving surface for engaging a fastener such as a staple. A magazine assembly is associated with the housing for positioning and aligning the fastener in the path of the driver so that when actuated, the driver strikes the fastener and forcibly ejects it from the magazine into the substrate to a predetermined extent so as to adjust or control the holding power of the fastener about the object.

Abstract: Immediately after a clinch lever causes a clinch link to clinch the leg of a staple which penetrates sheets of paper to be stapled, a pressure by the clinch lever with respect to the clincher link is temporarily reduced by a pressure reducing unit. Therefore, a clincher moves down in a state where the clincher still receives the press-contacting force from a driver plate. Accordingly, the looseness occurs between the driver plate and the clincher link. A fixing plate becomes easy to draw out as much as the looseness. If the fixing plate is set to be drawn out at this timing, it can be simply drawn out to be moved to the initial position.

Abstract: A driving tool is provided with a driver for driving out a fastener from a nozzle, a balancer, and a balancer biasing member for biasing the balancer in a direction away from the nozzle. The balancer moves in the direction away from the nozzle by a biasing force of the balancer biasing member when the driver moves toward the nozzle.

Abstract: A staple gun tacker includes a wire guide mechanism in its forward end which includes a wire guide plate having a recessed lower end for engaging a wire when the plate is in an extended position and a rotatable cam for moving the plate between extended and retracted positions which includes a circular slot formed therein having one end thereof located closer to the axis of rotation of the cam then the other receiving and engaged with a projection on the cam plate so that rotation of the cam is translated into linear movement of the wire guide plate.

Abstract: One example of the invention is a holding bracket for attachment to a fastening tool, the fastening tool having a barrel for firing a fastener, the tool defining a major axis, the holding bracket for holding overlapping portions of two members to be fastened to one another. An example holding bracket comprises a mounting portion configured for attachment to the tool and an extension portion extending from the mounting portion. A holding arm is attached to the extension portion and spaced apart from the mounting portion in the direction of the tool major axis to define a gap between the holding arm and the mounting portion, the gap for holding the overlapping portions of the two members for insertion of a fastener ejected from the barrel.

Abstract: A stitching head is provided for stitching books or printed products. The stitching head includes a supporter and a driver. The supporter has a corrugated supporter surface including first ridges and first grooves. The driver interacts with the supporter and has a channel and a corrugated driver surface which includes second ridges and second grooves. The first grooves and first ridges of the supporter mesh with the second ridges and second grooves of driver and the channel supports stitching material between the corrugated supporter surface and the corrugated driver surface. A method is also provided.

Abstract: A hand-operable device of mounting an anchoring pin and inserting the pin into the ground includes a hand-graspable elongate handle having an upper under and a lower end and a magnetic puck assembly fixed to the handle lower end for picking up an anchoring pin and maintaining in an insertion position until the pin is inserted into the ground.

Abstract: The present invention relates to an powered stapling device and, more specifically, but not limited to, a powered stapling device for driving staples over a strip of linear material, such as a cable located in an otherwise inaccessible or difficult to reach place. The stapling device includes an actuation mechanism, a handle, a staple ejection mechanism, and a drive arm operable along a primary axis of the stapling device. The actuation mechanism provides energy to the drive arm, which in turn engages the staple ejection mechanism, which in turn drives the staple. At least a portion of the staple engagement mechanism may be positioned at an angle with respect to the primary axis. This configuration of the staple engagement mechanism allows the stapling device to drive the staple at an angle relative to the linear object being stapled, even when the primary axis of stapling device is aligned substantially parallel or substantially perpendicular to the linear object being stapled.

Abstract: The invention relates to a device for setting fasteners, in particular a driving tool, comprising at least one striking pin for a particular fastener, wherein the striking pin and the fastener to be set by means of the striking pin are guided at least in some sections in a channel, which comprises at least one stationary channel part and a channel closure flap arranged so as to be pivotable relative to the channel part. The channel closure flap is held at the upper end thereof by means of an eccentric shaft that can be adjusted about the rotational axis, wherein the closure flap comprises at least one holding part corresponding to the channel part for forming a lock. The eccentric shaft preferably comprises two end sections oriented coaxially to each other and a center part arranged eccentrically to the end sections, wherein the closure flap is rotatably mounted on the center part of the eccentric shaft.

Abstract: A staple gun includes an arm having an elongate hole and a protrusion extends from the first end of the arm. A driving plate has a first hole and a second hole. The protrusion is inserted into the first hole. A strike plate is located beside the driving plate and has a third hole. A resilient plate has a first end extending through the second hole and the third hole. A spring is rested on a top of the first end of the arm. A case includes a fulcrum axle and a fixed axle. The fulcrum axle extends through the elongate hole of the arm and is located behind the driving plate. The fixed axle contacts a top surface of the resilient plate. The effort arm from the fulcrum axle to the front end of the arm is shortened so as to save effort when pivoting the arm.

Abstract: A movable holding bracket is provided for attachment to a fastening tool having a nosepiece for driving a fastener, the holding bracket configured for holding overlapping portions of two members to be fastened to one another, the bracket including a fixed portion configured for attachment to a workpiece contact element of the tool, and a movable portion movably attached to said fixed portion. A holding arm is attached to the movable portion and defines a gap configured for holding the overlapping portions of the two members for insertion of a fastener driven from the tool nosepiece.