Abstract: A device for driving nails, staples and similar fastening elements includes an electromotor for rotating a driving member. The rotation of the driving member is transferred to a driven member which, in turn, converts the rotational movement into translational movement. The rotational movement from the driving member to the driven member is effected for a limited time period by a clutch so that a drive stroke and a return stroke are carried out. A releasing device actuates the clutch.

Abstract: A tool for driving fasteners by means of multiple impact blows. The tool comprises a body with a handle portion and a magazine portion, shiftable in directions parallel to said blows between an extended position substantially outside the body and a retracted position substantially within the body. A prime mover provides a rotating shaft. The rotating shaft is operatively connected to a mechanism for translating rotary motion into reciprocating motion. The translating mechanism comprises a flywheel, an impact member having at least one impacting surface thereon and being attached to or constituting an integral, one-piece part of the flywheel, a free floating energy transfer member separate from but engageable with the impact member, a resilient bumper to arrest the energy transfer member at the termination of its drive cycle, and a fastener driver engageable by or comprising an integral, one-piece part of the energy transfer member.

Abstract: A stapling machine with an increased momentum of the driver-ram combination for a heavy-duty task, the ram being accelerated by means of two electrical coils which surround externally the path of the ram to produce magnetic forces to speed up the movement of the ram. The rebound of the drive-ram combination is slowed down by means of an absorbing device which consists of many heavy-weight metal particles confined in a hollow round bar forming the ram, which particles move along but lag behind the movement of the ram so that the ram, when it rebounds will move against the particles still moving forward thereby dissipating ram momentum to prevent bouncing-back movement of the ram.

Abstract: In an electromagnetically operated driving tool, in which a cup-shaped plunger carrying a driver blade is axially slidable in a solenoid, an air damper, combined with a check valve, is provided to damp the plunger during its backward movement to an inoperative position. A hollow cylinder positioned in the plunger is vented through an opening in a housing of the tool and has an interior which is closed at its end with a liftable valve flap. A throttle gap is formed between the plunger and the cylinder, which is adjustable by a piston movable in the cylinder which is made of elastic plastics and is elastically expandable to vary the throttle gap.

Abstract: A stapler apparatus having a member for limiting the angular relationship between a fixed base member and the pivotal magazine therefor. The limiting member includes a stepped stop member positionable between the base member and magazine, and is formed so that different angular relationships may be obtained. For each angular relationship, the bending of preformed staple legs is controlled so as to permit the use of the same size of staples for a few sheets in a set of sheets being stapled.

Abstract: An offset electric stapler having an armature that is axially restrained primarily by its interaction with the interior surface of the driving coil. By supporting the armature with the coil and minimizing the offset between the armature and the staple driving blade, an improved stapler is obtained.

Abstract: An electromechanical device associated with table staplers for automating the operation of such staplers. A box-like body houses and restrains a conventional table stapler. The body is provided with a camming member for controllably pressing on the movable arm of the stapler, to cause a metal staple to be ejected and its ends to be bent against the die arranged on the fixed arm of the stapler. A timer device releases the arm of the stapler and resets the camming member after a preset period of time.

Abstract: A stapler wherein a staple pushing blade which can be moved up and down from and into a staple guide clearance from which a staple is forced out toward a staple bending groove, and a solenoid having a plunger for moving the staple pushing blade in the vertical direction are provided in a staple container. The staple container is provided with a slider for pressing the staplers toward the staple guide clearance, and a cover member closing an opening at the upper side of the staple container and capable of being moved forward and backward.

Abstract: A relatively small desk-type stapler is disclosed which both forms and drives the staple from a belt of staple blanks retained in a removable cartridge. The stapler includes a driver, a former positioned to be driven by the driver, a former block and a sheath, all of which ports are held to a stationary stapler head by means of a single spring. Power to drive and form the staple may be provided by an electric solenoid. A simple anti-jam means is provided by the interaction ofthe driver, the former, the former block, the sheath and the stapler head.

Abstract: A portable electric stapler wherein a bladelike impeller is reciprocable by the armature of an electromagnet which is energizable a selected number of times so that a staple which is introduced into a housing channel in front of the impeller is gradually driven into a workpiece. The magazine for staples and that part of the housing which defines the channel are movable relative to the impeller between a first position in which a pusher can expel a staple from the magazine into the channel and a second position whereby the impeller separates the foremost staple from the stack of coherent staples in the magazine. The impeller blocks the outlet of the magazine during the intervals between successive energizations of the electromagnet to thus prevent entry of a fresh staple into the channel before the driving of the preceding staple into the workpiece is completed. The rearward movements of the armature and the impeller are braked by a pneumatic brake or by a shock absorber.

Abstract: An electro-magnetic tacker, which can carry out a limited number of driving strokes when its main switch is actuated, has a staple magazine pivotal between a blocking position and an operating position. In the operating position of the staple magazine, a staple blocking member blocks the front staple located in the staple magazine and, in the blocking position of the staple magazine, releases this staple for entry into a staple output channel. A coupling element connected to the staple magazine has an engagement portion which, in the switched-on position of an actuator element of the main switch, is in engagement with this. In this switched-on position, the actuator element holds the staple magazine in the operating position via the coupling element, so that the tacker can be lifted off from a workpiece, while at the same time the operating position of the staple magazine and the blocking action of the staple blocking member are maintained.

Abstract: An energy storage and release system (10) in combination with an aircraft (11) for ejecting an ordnance from the aircraft, the system (10) including a housing (22) mounted in the aircraft (11) and a drive shaft (24) having an outer end (26) and inner end (28) supported within the housing (22) for reciprocating axial movement of the outer end (26) into and out of the housing (22). An energy storage system including a flywheel (30) rotatably mounted within the housing (22) and operatively connected to the drive shaft (24) moves the outer end (26) of the drive shaft (24) axially out of the housing (22) to eject an ordnance (18). A linear induction motor (16) powers the flywheel (30).

Abstract: A stapling tool which includes an anvil assembly that is pivotally mounted and which can be positioned to secure items together through which a staple received from a magazine assembly is driven. The tool is trigger-operated and sequentially positions the anvil assembly to retain the items, after which a motor is actuated to drive the staple to connect the items. Following the driving action, the anvil assembly is removed to permit assembly of the connected items.

Abstract: A staple forming and driving tool (10) employing a vertical front portion of a staple head base (34), and sheath (40) to provide a space for the reciprocating former member (70) and a driver (80). A spring (50) urges base (34) and the sheath (40) together with spacer lugs (33) maintaining a defined distance between the base (34) and the sheath (40). A belt of staple blanks is fed through an opening (100) in the base (34) by a cartridge. The cartridge extends into the opening (100). A belt advancing means (104, 112) is provided which is held in an inoperative position by the forming tang (75) during a portion of the forming and driving stroke in order to prevent movement of a staple wire (200) during critical portions of the forming and driving stroke. The former (70) is moved during the forming and driving stroke through a path which permits former lugs (72) to guide the formed staple down to a point adjacent the workpiece.

Abstract: A press having a generally "C" shaped frame, punch mounting means arranged on an upper part of the frame, and anvil support means provided on a lower part of the frame. A relatively deep throat is thereby afforded for sheet metal which may be inserted between said punch mounting means and said anvil support-means. Anvil-support suspension mounting means are provided on the upper part of the frame to allow a further anvil support to be suspended from that part of the frame, whereby smaller work can be operated on by the machine.

Abstract: In a drive-in apparatus for driving fasteners such as clips, nails, tacks, staples and the like in a workpiece, a solenoid for actuating impact blade which ejects the fastener is movably arranged in the apparatus housing. The solenoid includes an exciter coil formed with a central opening in which a cylindrical armature connected to the impact blade is magnetically accelerated in forward direction and returns to the starting position by a resetting spring. The exciter coil is also movably guided within the housing and spring biased in the forward direction by another biasing spring having a progressive elasticity characteristic. Depending on the steepness of the characteristic line of the second biasing spring, the backstrokes of the apparatus and the force necessary for tacking operation can be adjusted in broad range.

Abstract: Stapler mechanism drive unit utilizing a high-speed, low-inertia flywheel with a combination bellcrank and cam power-delivering arrangement for furnishing power to a stapler driver and clincher.

Abstract: An electrically operated stapling apparatus is disclosed having a circuit utilizing a capacitor for driving the solenoid actuator for the apparatus. The circuit includes a fullwave rectifier for charging the capacitor with closely spaced dc pulses and includes circuitry for producing a plurality of charging levels for the capacitor depending upon the number of sheet material to be stapled. A reference circuit is also provided to insure the voltage level of charging is such that the operation of the apparatus is immune to line source voltage fluctuations.

Abstract: An electrically powered hand tool, such as a staple gun, can employ an electrical driver, such as a solenoid, which is actuated by a trigger circuit in response to depression of a trigger on the handle of the device. The trigger circuit can include a circuit board dimensioned to fit into the handle of the staple gun, and having AC input leads. A circuit formed of conventional electronic components delivers a burst of power to output leads which are in turn connected to a driver solenoid. This circuit is actuated to deliver the power burst by opening of a switch formed of two switch members: one switch member has a first flexible resilient conductive leaf formed, e.g., of an alloy of copper, extending beyond an edge of the board; the other member has a flexible resilient leaf with a bent-in pointed end contacting a side of the first blade. These blades are biased against each other to form a normally-closed switch. When the first blade is moved in one direction, the switch opens.

Abstract: A driver return assembly for an electro-mechanical fastener driving tool. The tool is of the type provided with a driver which is frictionally moved through a working stroke by means of an electrically driven flywheel which presses the driver against a support element, such as a counter rotating flywheel, a low inertia roller, or the like. The driver return assembly comprises at least one elastomeric cord being attached at one of its ends to the driver and at the other of its ends to an anchor within the tool. The at least one elastomeric cord, between its ends, passes about at least two pulleys. One of the pulleys is mounted on a spring supported shaft to compensate for stretch of the at least one elastomeric cord to assure that the driver is returned to its normal, retracted position after each working stroke.

Abstract: A device for driving nails and similar fastening elements includes a driver rod performing a reciprocating stroke-like movement for placing the nails. A rotating driving element transmits the driving power to the driver rod so that it carries out the stroke-like movement. During the nail driving operation, the rotating driving element is coupled with the driver rod by a carrier. The carrier is secured to the driving element and moves along an elongated path in converting the rotational movement of the driving element into the stroke-like movement of the driver rod.

Abstract: With a solenoid actuated tacker the setting of the penetration depth of the fastening elements is effected by adjusting the operating stroke of the armature with respect to the solenoid coil actuating the armature. To accomplish this there is preferably provided an armature stop displaceable in the direction of movement of the armature. The stop is preferably supported and moved by a cam-like element adjustably rotatable about an axis at right angles to the movement of the armature. In this way the drive-in depth of the fastening elements can simply and readily be adjusted.

Abstract: An improved flywheel for an electro-mechanical tool, such as a nailer or stapler. The tool is of the type provided with a driver which is frictionally moved through a working stroke by means of an electrically driven flywheel which presses the driver against a support element, such as a counterrotating flywheel, a low inertia roller, or the like. The flywheel is provided with circumferential grooves while maintaining the optimum contact area between the flywheel and the driver. The grooves provide voids along the travelling driver-flywheel contact line into which foreign material on the driver and flywheel flows to prevent build-up of such foreign material at the driver-flywheel contact area sufficient to result in loss of friction therebetween.

Abstract: To prevent bounce of a hammer or plunger element coupled to an insertion blade of a stapling or nailing gun upon return of the plunger element to rest position by a spring (11), the plunger element (4) is in cup shape, sliding about a hollow cylinder (6) which is vented to ambient air (8) at one end, but closed at its other end by a flap-type check valve (9).

Abstract: An electrically-operated manual device, such as a nail driver, has an electric motor for actuating an axially-movable impact body. The motor is a vibrating armature AC motor having a single-sided movably arranged vibrating armature which, in dependence of the power supply frequency, acts with a high impact frequency on a low-mass impact body. The impact body is located in a stationary cylinder connected to a housing of the device and has a detachable adapter sleeve which receives a plunger activated via the impact body on a part to be driven. The configuration of the device makes it possible to construct a nail driver or the like with an extremely compact structure since the cylinder equipped with the impact body can be arranged immediately adjacent the vibrating armature AC motor. The power losses are negligible because the vibrating armature, swinging about an axis, acts directly on the low-mass impact body.

Abstract: A fastener driving device such as a tacker, including a silicon-controlled rectifier (SCR) actuating circuit for producing a power stroke for substantially a complete half cycle of an AC potential supply and which occurs following the actuation of a switch actuable at random times with respect to the cycles of the AC supply. The circuit features three functional stages. A firing synchronizer circuit is provided to inhibit firing at other than the beginning or end of a half wave cycle of rectified AC potential. A memory supporting circuit provides a high degree of switch bounce immunity. A protecting circuit prevents an accidental and undesirable firing of the SCR that might otherwise automatically occur when a sudden increase of voltage occurs at its anode such as might occur when power is first applied to the actuating circuit.

Abstract: A fastener driving device such as a tacker, including an actuating circuit for producing a power stroke for substantially a complete half cycle of an AC potential supply and which occurs a fixed number of cycles following the actuation of a switch actuable at random times with respect to the cycles of the AC supply. The circuit features a decade counter clocked by the AC supply. One of the decade count outputs of the counter provides a signal for firing an SCR in series circuit with a solenoid for powering the tool. The counter is wired in circuit so as to latch at a predetermined count higher than the count output from which the firing signal is taken. Actuating the switch causes the counter to reset to zero, after which it counts positive half-cycles of the AC. When it reaches the count corresponding to the output from which the firing signal is taken, the tool is actuated. The counter continues to count until it relatches. It remains at the latched count until the switch is again actuated.

Abstract: An electro-magnetic stapling tool having a mechanism for adjusting the power with which the solenoid-operated plunger and the staple driver drive the staples. In its preferred embodiment, the power adjusting a mechanism includes a manually adjustable selector knob having a cam element, and includes a cam follower mounted in association with the upper end of the solenoid core. Rotation of the selector knob adjusts the length of the solenoid power stroke and the resulting driving power of the stapling tool.

Abstract: An automatic electric stapler in which the driver of the stapler is fixed to the armature of a solenoid so that actuation of the solenoid directly drives the driver of the stapler against the anvil of the stapler. Staples are mounted in a magazine in the device and fed by spring bias towards the driver. The solenoid is controlled by two switches linked to two control relays.

Abstract: A fastener tool having a housing in which is mounted a universal motor to be continuously operated during operation of the tool. A gear driven by the motor is a rotary driven member. A drive pin is carried by the gear to rotate therewith and is free to be shifted axially relative the gear. A drive bar is mounted in the housing to drive fasteners. The drive pin is connectable to the drive bar to produce a power stroke and a return stroke. An interrupt mechanism is operative to prevent successive power strokes, and in the preferred embodiment it will include the drive pin; it will act to disconnect the drive pin from the drive bar. Also the interrupt mechanism will control the connection of the drive pin and drive bar. The maximum number of power strokes are one-half the number of rotary cycles of the rotary driven member. The interrupt mechanism includes a linkage for sensing workpiece engagement and operator actuation of the tool, each of which are required to produce a single power stroke.

Abstract: A solenoid powered apparatus for clenching staples is disclosed. The known force-displacement output of the solenoid is converted to match the known force required to clench the staple legs.

Abstract: A one shot firing circuit for electrically powered tools is described which includes a manually operable normally open trigger switch connected electrically in series with a solenoid coil and an AC power source for controlling the supply of electrical power to both the firing circuit and the solenoid, such that when the trigger switch is open, the path of current flow to the solenoid coil is physically interrupted. The firing circuit also includes an SCR connected electrically in series with the trigger switch, the solenoid coil and the AC power source, for controlling the flow of current through the solenoid coil after the trigger switch has been closed.

Abstract: An electrically operated fastener driving device comprising a housing structure providing a manually engageable handle for engaging a user to portably operate the device, a front wall disposed in vertically extending relation forwardly and below the handle and a vertically extending fastener drive track disposed closely adjacent the front wall. A solenoid is carried by the housing structure forwardly of the handle and rearwardly and above the drive track and includes an elongated plunger having a longitudinal axis inclined with respect to the vertical. A cam and cam track mechanism is disposed between the upper end portion of the fastener driving element slidable in the drive track and the lower end portion of the plunger for causing a downward stroke of the plunger in response to the energization of the solenoid to effect a drive stroke of the fastener driving element.

Abstract: A tool for applying fasteners to fasten an article to the workpiece. A compressible foot is provided to limit the drive distance of a plunger to position dependent upon the thickness of the article. A drive groove in the tool provides support for the fastener until it is driven into the workpiece. The fastener may be a plastic staple and multiple driving strokes may be used to drive the staple into the workpiece. A retainer activated by the compressible foot may be utilized to prevent the advancement of the next staple to the drive position while multiple drive strokes are being used.

Abstract: An electric nailer includes a body and a fastener magazine pivotally connected thereto. The nailer also includes a switch for energizing the nailer that is engagable by a safety to prevent actuation. The safety is moved out of engagement with the switch upon pivoting of the magazine. The magazine includes a pusher assembly defined in part by portions of an elongated tube joined together to define a gap. A pusher is slideably mounted within the gap and biased to push fasteners toward the nose of the nailer. The magazine also includes a fastener track that includes a reduced portion and an enlarged portion to accommodate fasteners of different sizes. A shoe may be releasably attached to the bottom portion of the magazine and in one embodiment is V-shaped including a raised portion at one end. In another embodiment the shoe has a flat workpiece engagement portion.

Abstract: A stapling apparatus is disclosed having an arrangement to prevent the repenetration of one or more legs of a staple during stapling of a low number of sheets, say on the order of 2, 3, 4, or 5 sheets while utilizing a staple of a size for 20 sheets or more. The invention is an improvement of a commercial machine which it modifies by adding a back up member to the staple deforming mechanism during penetration of the legs of the staple through sheets of paper and final bending of the legs in a stapling operation.

Abstract: A high speed, portable, rug binding machine in the form of an electric-powered hand-tool carrying and dispensing a roll of binding tape has floor-engaging canted wheels for directing the frame of the machine into a rug as it is rolled along a rug edge to which a binding is stapled by the machine as the operator pulls a trigger causing a solenoid to drive the stapler by way of a power linkage which automatically adjusts for rug and for binding thickness; the machine has adjustment for varying rug-to-binding holding force, prior to stapling, and rug introduction angle; simplicity of mechanism provides compactness and light weight suitable for one-hand manipulation by the operator under all conditions.

Abstract: A stapler includes a main body, a magazine portion and a handle. A solenoid with a reciprocatable plunger is mounted within the main body. The plunger is constrained for movement along an axis that is at an acute angle with respect to an axis along which the staples are driven. A driver, which is moved by the plunger, drives a staple into a workpiece. A circuit is provided to permit only one staple to be driven for each actuation of the stapler.

Abstract: One or both of a pair of oppositely rotating bodies, such as motor driven flywheels, are mounted for pivotal movement against the side of a ram. One or more tension rods connect pivot shafts or members for equalizing precession and similar forces of rotating bodies, rather than housing. Pulsed solenoids produce force increased by force multiplying device, such as pivoted links or cable arrangement, which has greatest mechanical advantage when solenoid pull is weakest at start, but decreases as solenoid pull increases. Ram has entrance taper on one or both sides. Ram is returned by nylon sheathed bundle of elastomer cords which are looped around ram from both sides and stretch proportionally along their length. Removable guide rods engage holes in side wings of ram. Safety device is actuated by rod, moved through engagement with work piece, for closing safety switch in solenoid circuit. Alternatively, a block engages a ram wing to prevent impact stroke, but is removed by a similar rod.

Abstract: An electronically operated portable nail driving gun is disclosed. Nails are driven into a workpiece by a driver blade which is actuated by a solenoid powered by a source of alternating current. Each actuation of the device produces two successive driving strokes delivered to a nail. The tool is also provideed with means for preventing more than one nail being driven during each actuation of the tool. A preferred embodiment in which the tool is double insulated is also disclosed as are control circuits which permit operation at either 110 V. or 220 V.

Abstract: A control arrangement for an electro-mechanical tool is disclosed. The tool may, for example, be a nailer or stapler, and is provided with an impact member which is frictionally moved in a working stroke by means of an electrically driven flywheel, which presses the impact member against the support element, which may be a counter-rotating flywheel. A solenoid is provided to move the impact member into the bite between the flywheel and support element. A trigger actuated switch and a safety switch actuated by contact of the tool with the workpiece must both be actuated in order to energize the solenoid. Circuitry is disclosed which makes possible the energization of the solenoid by closing both switches in any order, or in a desired particular order, and makes possible the provision of a time delay safety.

Abstract: An electronically operated portable fastener driving tool is disclosed. Fasteners are driven into a workpiece by a driver blade which is actuated by a solenoid powered by a source of alternating current. Each actuation of the device produces two driving strokes delivered to a fastener. The tool is also provided with means for preventing more than one fastener from being driven during each actuation of the tool. A preferred embodiment in which the device is double insulated is disclosed. Control circuits which permit operation at either 110 V. or 220 V. are also disclosed.

Abstract: A machine for the attachment of rivets, buttons or the like on clothing pieces, with an upper tool to be moved onto the lower tool, which upper tool sits on a vertically guided tool ram with electrical drive. Two different strength magnets are coordinated to the upper tool ram, the latter being spring-biased in the reverse direction, such that the weaker electromagnet which sits in the range of a cross-sectionally-smaller step of the upper tool ram surrounds the upper tool ram in ring-like manner and the stronger electromagnet has a core which core forms a pot-shaped recess for moving a plate armature therein, the latter being arranged on the free end of the upper tool ram.

Abstract: This invention relates to an electric impact tool characterized by a pair of electric motor-driven counterrotating flywheels, at least one of which is movable relative to the other from a retracted inoperative position into an extended operative one closely adjacent the other flywheel whereby a ram is squeezed therebetween and impelled forward at high speed against a workpiece. The nosepiece of the tool frame is retractable although normally extended due to the spring bias urging it and the movable flywheel to which it is mechanically linked into disengaged position. These elements cooperate with one another and with a manually-actuated trigger such that the latter must be depressed and the nosepiece retracted in order to engage the high energy friction clutch defined by the flywheels so as to operate the ram. A flywheel speed control is provided for matching the ram impact to the workload.

Abstract: An impact device, useful for driving nails, staples and other fastening elements. The driving member is driven by frictional engagement with a rotating high speed flywheel. The device has a safety provision whereby it cannot be actuated until the nose of the device is pressed against a work piece. This action also produces a movement of a support means, such as a roller, towards the rotating flywheel. It should be pointed out that the tool could be designed, in the alternative, with a fixed support means and movable flywheel. Actuation of the trigger moves the driving member into engagement between the support and the rotating flywheel, and the flywheel propels the driving element in a fastener driving direction. The support means is provided with a leaf spring permitting it to yield so that the driving member can pass between the flywheel and the support means while maintaining frictional engagement between the flywheel and the driving member.

Abstract: A staple fastener applying machine comprises a base on which is mounted a first support that pivotally supports a driver arm carrying a driver and a holder arm holding a staple magazine, the driver arm being actuatable for angular movement toward the base by a solenoid mounted on the base so as to force the driver toward a clinching anvil carried on a second support mounted on the base. Staple fasteners stored in the magazine are fed one at a time into the path of movement of the driver for being driven thereby. The solenoid is located remotely from the second support to provide a relatively large space around the second support such that the machine can handle a relatively bulky object for staple applying operation. The driver and holder arms are spring-biased away from each other, but are prevented from moving apart beyond a certain angular spacing between them.

Abstract: An electronically operated portable fastener driving tool is disclosed. Fasteners are driven into a workpiece by a driver blade which is actuated by a solenoid powered by a source of alternating current. Each actuation of the device produces a predetermined plurality of driving strokes being delivered to a fastener. The tool is also provided with means for preventing more than one fastener from being driven during each actuation of the tool.

Abstract: A nail driver for driving nails into a receiving surface comprises a housing with a release member movable upwardly and downwardly in the housing having a lower end which is engageable with the receiving surface. A nail guide channel is defined in the housing and it is arranged in association with a magazine for feeding nails into the channel in succession. A nail driver bar is movable upwardly and downwardly in the channel over the nail. A compression spring is engaged between the lower end of the release member and the nail driver so that when the release member is pressed against a surface, it may move upwardly against the force of the compression spring. The control mechanism is actuated by displacement of the release member to effect driving of a windup drum for a drive tape which is wound around the drum and connected at its free end to the upper end of the nail driver.

Abstract: An impact tool includes a rotational energy device mounted within the housing of the tool. A driver is reciprocally mounted within the housing and is coupled to the energy device by a toggle member. The toggle member includes a clutch and is actuated to transfer energy from the energy device to the driver. The driver and toggle are driven through a power stroke upon engagement of the clutch with the energy device. Upon completion of the power stroke, the clutch engages a bumper removing the clutch from the energy device and the toggle and driver are returned by a return assembly driven by the energy device.A second embodiment of the tool includes a wheel rotatably mounted on the toggle. The driver is positioned between the energy device and the wheel such that once the wheel is moved by the toggle, the driver engages the energy device and is driven thereby.

Abstract: A plastic heel is attached by inserting through an insole of a shoe a fastener, and vibrating the fastener at ultrasonic frequency to cause its shank to melt the plastic and become embedded in the heel. The fastener may be a staple with wide legs having holes therein. The shank of the shoe may be bridged by the staple for added attachment strength. Since less work penetration is needed than in nail-attaching of heels, advantage is gained especially in securing sharply tapering or so-called "stiletto" heels.