Abstract: A powered and cordless box wrench able to reach and turn fasteners in tight locations consisting of a hex insert with retention features and a hex opening for fasteners, a tool head frame and cover with a recess for a drive shaft, at least one battery, polarity switch button and arm, a power button and arm, and a drive motor with a set of planetary gears and ring, plus a lockout wheel where the hex insert may be secured by the tool head and driven by the motor, planetary gears and drive shaft to ease the difficulty in turning hard to reach fasteners.

Abstract: A movable barrier operator includes a first side panel having a first opening and a second side panel, opposing the first side panel, where the second side panel has a second opening. The operator further includes a motor having a first side and an opposing second side including a first shaft extending in a first direction and a second shaft of the motor extending in a second opposite direction. The operator further includes a first bearing, the first bearing inserted into the first opening of the first side panel, wherein the first shaft of the motor is inserted through the first bearing and a second bearing, the second bearing inserted into the second opening of the second side panel, wherein the second shaft of the motor is inserted through the second bearing to thereby prevent transfer of vibration from the motor to the second side panel.

Abstract: An impact wrench includes a front housing and a motor. A transmission mechanism and an impact mechanism are disposed in the front housing. A transmission direction of a force outputted by the motor is changed via the transmission mechanism to drive a working member of the impact mechanism to rotate. A part of the working member is protruded and is exposed outside the front housing. The front housing includes a seat and a covering member which are detachably engaged. The detachable engagement between the seat and the covering member is convenient for a user to maintain an inside of the impact wrench.

Abstract: A tool housing and method for making the same are disclosed. The tool housing can include upper and middle portions that are fully machined and coupled to one another. The tool housing can also include a lower housing that is partially machined, coupled to the remaining housing portions, and then fully machined. In doing so, the machining operation is eased and the portions of the housing are better aligned with one another.

Abstract: A ratchet wrench with electric assistance includes a wrench body, a ratchet device, a pawl device, and a switch device. The switch device is configured for optionally gearing the pawl device with the ratchet device, so that the ratchet wrench is operated in a clockwise or counterclockwise direction. During the directional changing process, the switch device optionally engages the first gear and the second gear with the transmission gear of the power device, such that the power device transmits the power to the ratchet device for controlling the clockwise or counterclockwise rotation of the ratchet device, realizing the ratchet wrench with an electric assistance function.

Abstract: A ratchet wrench includes a head with a ratchet wheel, a first pawl unit and a second pawl unit received therein. The first pawl unit includes a first pawl and a second pawl, and the second pawl unit includes a third pawl and a fourth pawl. The first and second pawl units are controlled to be engaged with the ratchet wheel so as to provide sufficient number of teeth to be engaged with the ratchet wheel. The ratchet wrench outputs sufficient torque with a small angle of rotation.

Abstract: A socket assembly includes a socket head, an input member, and a plurality of transfer members. The socket head is disposed about an axis and defines an aperture extending axially through the socket head and through a side of the socket head. The socket head includes external teeth. The input member is coaxial with the socket head. Each transfer member includes a first end drivingly coupled to the input member and a second end configured to engage the external teeth.

Abstract: A ratchet handle contains: a body, a driving head, a first accommodation chamber and a second accommodation chamber separated by a partition, a first opening, a second opening, a connector. A connector has a ratchet, two actuation members, and two toothed portions, the first opening accommodates a press member which has two operation portions, two balls, a shaft, and a driving sheet. The first accommodation chamber has a covering sheet, and the covering sheet includes a first orifice, a second orifice, a notch, two tabs, a first recess, and a second recess, wherein each of the two balls abuts against the first recess or the second recess. The first accommodation chamber has the covering sheet received therein, and a bottom of the second accommodation chamber is connected with a holding plate. The covering sheet, the driving head, and the holding plate are locked by using two screw bolts.

Abstract: An automated pipe wrench assembly for tightening and loosening a pipe includes a wrench that may insertably receive a pipe. A drive is coupled to the wrench and the drive engages the pipe when the wrench insertably receives the pipe. The drive selectively rotates the pipe thereby facilitating the wrench to tighten the pipe.

Abstract: Apparatus and methods that may be employed to install or remove a threaded connector by allowing a cable or tubing segment attached to the threaded connector to pass through an open pass-through area that is defined to extend through the tool so as to allow the threaded connector to be tightened and/or loosened relative to the fitting by turning the connector a full revolution or more while the cable or tubing is attached to the connector and extending through the tool.

Abstract: In a tool attachment having an attachment housing on which a fastening interface is situated for fastening to an handheld machine tool, the fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and being equipped with a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, makes possible drawing the tool attachment away from the handheld machine tool, the angular position setting unit is operable in the locked state of the locking unit, to enable a change in the specified angular position.

Abstract: In at least one illustrative embodiment, an angle impact tool may comprise a handle assembly extending along a first axis and supporting a motor, the motor including a shaft configured to rotate about the first axis, and a work attachment coupled to the handle assembly. The work attachment may comprise an impact mechanism including an anvil configured to rotate about a second axis that is non-parallel to the first axis and a hammer configured to rotate about the second axis to periodically deliver an impact load to the anvil, a gear assembly configured to transfer rotation from the shaft of the motor to the hammer of the impact mechanism, and a housing supporting the impact mechanism and the gear assembly. The housing may be partitioned along a first parting plane that is perpendicular to the second axis such that the housing includes first and second housing sections.

Abstract: An angle impact tool includes a handle assembly extending along a first axis, a prime mover in the handle, an output shaft rotatable about the first axis, and a work attachment connected to the handle assembly. An output drive is supported in the work attachment for rotation about an output axis perpendicular to the first axis. A gear assembly including a spur gear is positioned within the work attachment to transfer torque from the prime mover about the first axis to the output drive about the output axis. An impact mechanism is positioned within the work attachment and includes a hammer and an anvil. The hammer rotates under the influence of the prime mover and is operable to periodically deliver an impact load to the anvil. The output drive rotates about the output axis under the influence of the impact load being transmitted to the output drive by the anvil.

Abstract: A motorized hand tool such as a cordless ratchet wrench is configured for reducing assembly and disassembly processes. The motorized hand tool includes a motor end plate that may be fastened to a drive member such as a ratchet head assembly without the use of fasteners or assembly tooling such as presses, fixtures or hammers. A flange on the motor end plate can pass through a keyway in a periphery of the ratchet head assembly and may be then be rotated out of the keyway and into a peripheral slot of the ratchet head assembly. A rib protruding inwardly from a clamshell housing portion of the tool closes the keyway to prevent the flange on the motor end plate from rotating back into the keyway.

Abstract: A tool that includes an interchangeable drive head and a split gear body for transmitting torque to the drive head. The compact nature of the split gear body allows for an automatic power means, for example, an electric or air motor, to supply torque through the split gear body into the interchangeable drive head. Further, the interchangeable drive head includes a gear that is positioned around a receiving portion for receiving a head of a workpiece, so that the interchangeable drive head itself is part of the gear assembly. The above structure allows for a compact design while still allowing for an automatic power means to transmit the torque to the workpiece.

Abstract: A hand tool, such as a motorized cordless ratchet wrench, is configured for reducing part count and reducing assembly processes. The hand tool includes a clamshell housing that may be fastened to a drive member such as a ratchet head assembly without the use of additional fasteners such as large clamp nuts or additional screw sets, for example. One or more protrusions extending inwardly from the clamshell housing engage similarly shaped voids in the ratchet head assembly. The protrusions tightly engage the ratchet head housing when the clamshell housing portions are fastened together.

Abstract: A power tool includes a motor having a motor drive shaft, a drive assembly coupled to the motor drive shaft and driven by the motor, an output assembly coupled to the drive assembly and having an output member, and a first housing that houses at least a portion of the motor and at least partially defines an outer surface of the power tool. The first housing is formed from steel for reducing flux losses of the motor. The power tool also includes a second housing disposed around an outer surface of the first housing. The second housing is formed from plastic and includes a grip portion.

Abstract: An adjustable length adapter incorporates a driving motor on the inside and is coupled with a rotation tool at one side, wherein a rotation shaft protrudes from the rotation tool and rotates when the driving motor is driven. The adapter includes a coupling member formed with a through-hole at one side to be penetrated by the rotation shaft, wherein the rotation tool is coupled at one side of the rotation tool, a main body having a supporting member formed at the other side of the coupling member, a varying section having one side coupled with the supporting member and withdrawable therefrom, and the other side is formed with a rotation shaft to be coupled with an exchangeable working member, a driving pulley disposed on top of the main body and coupled with the rotation shaft, a driven pulley coupled with the rotation shaft of the varying section, and a belt coupled between the driving pulley and the driven pulley for rotating the driven pulley when the rotation shaft protruded from the rotation tool rotates.

Abstract: A device that automatically actuates the reversing lever of a ratchet mechanism when the radial direction of the motor is changed. The auto-shift mechanism includes a worm gear that rotates with the motor, and a disc coupled to the worm gear that moves laterally as the worm gear rotates. Axial movement of the disc actuates a reversing lever of a ratchet mechanism by either pulling or pushing the reversing lever. A lost-motion mechanism can absorb an initial amount of torque so that the auto-shift mechanism can run its course prior to applying the torque to a fastener.

Abstract: A ratchet having an internal motor for rotatably displacing a mechanical fastener. The motor has a torque capacity that provides a minimum torque level. The minimum torque level is below a maximum torque level that is used to secure, or loosen, the mechanical fastener at/from a tightened position. When the mechanical fastener is being moved toward the desired tightened position, the motor of the ratchet may allow for relatively rapid rotational displacement of the mechanical fastener until the torque capacity of the motor is reached. The remaining torque, or maximum torque level, then needed to secure the mechanical fastener in, or at, a tightened position may be provided by the user pushing or pulling on the handle of the ratchet, wherein a wheel in the head portion having a drive may thereby be rotated so that a mechanical fastener that is operably connected to the drive is also rotated.

Abstract: A pneumatic ratchet wrench having a pneumatically actuated reversing device includes two cylinders disposed downstream of two branch conduits, and two plungers, each slidable in the respective cylinder by a burst of pressurized air from the branch conduits to bring an actuator into engagement with a direction selector so as to turn the direction selector in a selected one of clockwise and counterclockwise directions for unidirectionally rotating a drive body. The operation of direction selection is easy and handy to conduct.

Abstract: An electrical wrench includes a housing, a power member, a reversing mechanism, a support transmission assembly, an opening gear, a main control assembly and a restoring assembly. The housing includes having two projections, for example shaped as claws, arranged oppositely to cooperatively define an entrance. The power member, the reversing mechanism, the support transmission assembly and the opening gear are cooperatively coupled to one another and accommodated in the housing. The opening gear includes an outer teeth portion, an opening and a driving portion in communication with the opening, a tubular member for engaging with a fastener positioned in cooperation with the opening gear through the entrance. The restoring assembly includes an identifying portion, a sensor for sensing the position of the identifying portion, a control circuit board, a restoring switch and a restoring switch operator.

Abstract: A pneumatic driven ratchet wrench comprises: a wrench housing; a pneumatic motor; a ratchet wheel unit; two gear members; an urging member for biasing the gear members to engage the ratchet wheel; a transmission unit connected to the gear members and driven by the pneumatic motor; and a gear-selecting unit including an operating knob, a switching member and two pushing members. The operating knob is mounted on the wrench housing and is disposed distal from a head section of the wrench housing for driving movement of the pushing members. Each of the pushing members pushes a respective one of the gear members to move away from the ratchet wheel unit when moved from a releasing position to a pushing position.

Abstract: Disclosed herein are powered torque tools that may be used in assembly operations in confined spaces, such as doors-on automotive assembly operations. In various embodiments, the torque tools include an elongated housing having a proximal end and a distal end, wherein the proximal end includes a gripping handle. The disclosed torque tools also may include a drive element disposed in the distal end portion and adapted to rotatably engage a threaded fastener, a gear assembly operatively connected within the housing and operatively coupled to the drive element, a drive motor disposed within the gripping handle, and a cable-exit extending from the housing and positioned between the gripping handle and the distal end portion, wherein the cable-exit is configured to electrically couple the motor to a control cable.

Abstract: A torsion spring torque assembly for applying torque to a torsion spring of a garage door system. The assembly comprises a separable housing, an adjustable support member, a gear assembly and a cooperating and movable coupling shaft assembly having a driven gear and a hub to engage the winding cone of a garage door torsion spring. The gear assembly has a driver gear which engages the driven gear of the coupling shaft to wind a garage door torsion spring. The driver gear of the gearbox assembly may be operated by means of a screw gun and is constructed to provide bi-directional rotation for winding and unwinding a garage door torsion spring.

Abstract: A torque multiplier includes a main body, a torque input shaft, at least one torque sensor, an angle sensor, and an information transmission circuit. The main body contains therein at least one gear train. The gear train has upper and lower ends respectively forming a torque input port and a torque output shaft. The torque output shaft is coupleable with a tool piece, such as a socket. The torque input shaft has an end fit into the torque input port and an opposite end coupleable with a torque device, such as a hand tool, an electrical tool, or a pneumatic tool. The torque device applies a torque input to the torque input shaft that in turn rotates the gear train to provide a multiplied torque output to the torque output shaft. The torque sensor is mounted to a surface of the torque output shaft of the gear train of the main body to detect the torque value of the torque output shaft and provide a torque value signal.

Abstract: A ratchet wrench includes a handle and a pawl is pivotably connected to the handle. The pawl is selectively engaged with a positioning unit in the handle. A ratchet wheel has a through hole defined through the center portion thereof and the ratchet teeth of the ratchet wheel are engaged with the engaging teeth of the pawl. Two clamp members are inserted in the through hole of the ratchet wheel and each have an extension. Each extension has a slot defined in top and bottom thereof. The two extensions extend toward opposite directions. Two ring-shaped covers are respectively connected to the top and the bottom of the ratchet wheel and each cover has two openings defined in the underside thereof. The extensions extend through the openings. Pins extend through the covers and are engaged with the slots. The clamp members are movable to clamp objects of different sizes.

Abstract: An angle nut runner capable of accurately measuring a genuine tightening force includes an output shaft pivotally supported approximately perpendicular to the rotating shaft 1 of the drive source, a strain measuring mechanism for measuring a strain generated in the output shaft is disposed on the output shaft.

Abstract: A power wrench including a housing, a rotation motor, a reduction gearing connecting the motor to an output shaft, and a separate gearing casing which is rotatively and detachably mounted on the housing and supporting the output shaft. The reduction gearing is divided into a first gearing stage located in the housing and a second gearing stage located in the separate gearing casing. The first gearing stage and the second gearing stage are interconnected via an intermediate spindle, and the motor is connected to the first gearing stage via a hollow drive shaft surrounding the intermediate spindle and an angle gear. A torque sensor is associated with the first gearing stage in the form of strain gauges mounted on an elastically deformable sleeve connecting a ring gear of the first gearing stage to the housing.

Abstract: A die grinder including a body having a longitudinal axis, and a grinding head portion with an output shaft capable of powered rotation. A motor is disposed in the body for rotating the output member. A locking interconnect portion attaches the grinding head portion to the body and is adapted to permit selective rotation of the grinding head portion relative to the body about the longitudinal axis of the body. Thus, the grinding head can be positioned at different selected angles relative to the body.

Abstract: An auto hammer having a housing having a grip portion defining a central axis and a head assembly including a striking device which has a striking rod defining a central axis. The striking device is pivotable relative to the grip portion and the angle between the central axis of the grip and the central axis of the striking rod can range between 60° and 180°. The auto hammer thus provides a pivotable striking device and is thereby suitable for different working circumstances.

Abstract: This invention provides an auto hammer comprising a housing, a head assembly including a striking device and transmission mechanism. The striking device includes a striking rod having a striking end. The transmission mechanism includes an impact wheel. The distance from the end surface of the striking end of the striking rod to the center of the impact wheel between 40 mm and 100 mm. This distance is arranged very small, in favor of the hammer being used in some narrow spaces. The auto hammer according to this invention meets the requirements of being used in narrow spaces by hands, thereby suitable for use in various circumstances.

Abstract: A power ratchet assembly has a handle, a power shaft, a sleeve, a crankshaft, multiple planet gears, multiple pins, two support bearings and a ratchet head device. The crankshaft has an outer surface. The support bearings are securely mounted around the outer surface of the crankshaft. Because the crankshaft is supported by the support bearings, the crankshaft is effectively stabilized so mitigating vibration of the crankshaft and reducing wear of the planet gears and noise and increasing useful life of the power ratchet assembly.

Abstract: The problem of reaching a work piece, such as a nut on a bolt, in a restricted space not permitting traditional means of applying torque is addressed with a powered wrench. The wrench translates motor power on one axis to an engageable socket on a perpendicular axis through an innovative gearbox. Means are provided to shift from a gear ratio for power to a gear ratio for speed by simple manipulation, while different size work pieces can be accommodated through socket change parts.

Abstract: A cordless motor assisted torque wrench. In an example embodiment, the torque wrench includes an elongated housing adapted to enclose an elongated battery pack, a drive head pivotably connected to a first end of the elongated housing at a pivot connection, an electronic torque setting device operable to receive a desired torque setting from a user, a torque sensing device for sensing a level of torque applied by the wrench to a workpiece, a motor disposed within the head, and a torque limiter configured to limit the torque applied by the wrench to a workpiece based on the desired torque setting and the level of torque sensed by the torque sensing device. The elongated housing preferably includes a first segment and a second segment slidably coupled to form a telescopic elongated housing that is configurable into at least two lengths.

Abstract: A power tool includes a housing assembly having a first housing portion and a second housing portion supported for pivoting movement relative to the first housing portion about a pivot axis. The first housing portion supports a motor. The second housing portion includes a chuck for supporting a tool element. The power tool also includes a gear supported within the housing assembly for rotation relative to at least one of the first and second housing portions about the pivot axis. The gear is operable to transfer drive force from the motor to the tool element.

Abstract: An improved power assisted lever arm ratchet which has a 6? to 30? extension and drive shaft between the ratchet handle and the ratchet head.

Abstract: A rechargeable motor-driven ratchet wrench having power-off protection of the present invention includes a motor, a rechargeable battery and a power-off protection device. When the loaded current of the motor exceeds a set default value of a reference circuit, the power-off protection device disconnects the power supply of the rechargeable battery, so as to stop the motor operation. With the circuit design of the power-off protection device, the ratchet wrench can be ensured to provide usage safety and also usage lifespan of the ratchet wrench can be extended.

Abstract: A powered wrench is configured to rotate fasteners and includes a drive and a closed-end wrench. The closed-end wrench includes a wrench case, a socket rotatably mounted in the case, and a driveshaft rotatably mounted in the case and attached to the drive. The driveshaft includes a worm gear drivingly connected to a toothed external face of the socket so that rotation of the driveshaft by the pneumatic drive causes rotation of the socket.

Abstract: A cordless motor assisted torque wrench. In an example embodiment, the torque wrench includes an elongated housing adapted to enclose an elongated battery pack, a drive head pivotably connected to a first end of the elongated housing at a pivot connection, an electronic torque setting device operable to receive a desired torque setting from a user, a torque sensing device for sensing a level of torque applied by the wrench to a workpiece, a motor disposed within the head, and a torque limiter configured to limit the torque applied by the wrench to a workpiece based on the desired torque setting and the level of torque sensed by the torque sensing device. The elongated housing preferably includes a first segment and a second segment slidably coupled to form a telescopic elongated housing that is configurable into at least two lengths.

Abstract: An electric screwdriver is configured for fastening a screw in an apparatus. The driving part is configured for generating rotary motion. The driven part is configured for fastening the screw in the apparatus using the rotary motion. The transmission part nonlinearly connects the driving part and the driven part. The transmission part is capable of transmitting the rotary motion from the driving part to the transmission part.

Abstract: A powered driver and methods are disclosed, the driver including a head having a gapped jaw and housing a motor driven drive transfer assembly for operating a rotatable split socket engageable at a threaded connector. A reaction unit having a biased fitting engagement attached to rail guides is movably maintained through the head, and a probe and switch are associated with different ones of the reaction unit and the head. A safety assembly includes a biased gate switch engageble with a roller switch and is located at the head for sending run status electrical signals to the driver dependent on position of the gate switch. Control lights and switches are provided for user interface and driver status monitoring.

Abstract: A portable hand-held screw driving tool is provided for use with collated strips of screws. The front portion of the tool is movable to a great extent, to thereby allow the tool to drive screws almost directly at the corner of two walls. A front “nose piece” is pressed against one of the walls, which causes the nose piece to move rearward “into” the remainder of the tool, in a “first stage” of movement. A screw is indexed to its drive position, and a drive bit is abutted against the screw head during this first stage. The nose piece is pressed further into the tool, which also causes a “feed tube” to move rearward “into” the remainder of the tool, in a “second stage” of movement, which rotates the screw as it is emplaced into the wall.

Abstract: A chargeable electric winch for driving a to-be-controlled object to rotate. The electric winch includes a housing, a driving device, a driven shaft, a first switch and a battery. The driving device is disposed in the housing. The driven shaft penetrates through the housing and is driven by the driving device to rotate. The first switch is disposed on the housing and has a controller. The controller has an opposite connector and is electrically connected to the driving device. The battery has an inner battery body and an outer connector electrically connected to the inner battery body. The battery for providing power is electrically connected to the opposite connector of the first switch through the outer connector of the battery, and the battery is separatably assembled with the housing.

Abstract: A right angle driving apparatus capable of operable attachment to a powered rotational drive device such as a drill, the driving apparatus being generally comprised of a worm gear drive encased within a unique block-shaped housing. The subject driving apparatus may be employed to transmit power at high velocity ratios between a shaft that is driven by the drill to a wheel having an axis of rotation perpendicular to that of the shaft. The worm gear drive may be used as a speed increaser but is preferably used as a speed reducer in which the worm is the driver and the wheel is the driven member. The worm wheel is slidably mounted on a cylindrical hub adapted to receive in either end a variety of driving tools such as sockets and screwdriver blades used to rotate fasteners. The worm wheel is driven by a worm attached to a drive shaft the journaled end of which may be adapted to receive driving tools as well to permit direct driving of tools in addition to right angle driving.

Abstract: A hand tool has two digital video cameras mounted thereon adjacent to a working end of the tool for viewing a work site, which video cameras are connected to a pair of liquid crystal displays (LCDs) mounted on the tool proximate a control end of the tool. The hand tool includes a barrel with a handle at the control end and a control operator for activating the tool, wherein the control operator is in operative relationship with the handle and wherein the working end of the tool is positioned at the end of the barrel opposite the control end of the tool. In an illustrated example, the cameras and LCDs are mounted on a pneumatic nut runner with a T-head tool drive.

Abstract: An axial pawl ratcheting mechanism is provided that may be used for a wrench and comprises a first disc including axial gear teeth on a first side providing for ratcheting in a first direction. A second disc is provided having axial gear teeth and peripheral gear teeth. The second disc is mounted to the first side of the first disc so that the first disc axial gear teeth engage the second disc axial gear teeth and provide an axial pawl ratchet assembly. A ratchet head is provided having an internally toothed opening for receiving the axial pawl ratchet assembly therein so that the peripheral gear teeth of the second disc engage the internal diameter teeth of the ratchet head in order to transfer torque between the ratchet head and the axial pawl ratchet assembly. An actuator is provided for adjusting the positioning of the axial pawl ratchet assembly between a first engagement position and a second engagement position.

Abstract: A rechargeable motor-driven ratchet wrench having power-off protection of the present invention includes a motor, a rechargeable battery and a power-off protection device. When the loaded current of the motor exceeds a set default value of a reference circuit, the power-off protection device disconnects the power supply of the rechargeable battery, so as to stop the motor operation. With the circuit design of the power-off protection device, the ratchet wrench can be ensured to provide usage safety and also usage lifespan of the ratchet wrench can be extended.

Abstract: A power tool comprises a handle, a head pivotally coupling to the handle, an operating member disposed on the head, a positioning element installed in the head and biased with an elastic element for fixing the head in a desired position relative to the handle. The operating member has a pressing portion and a receiving portion. While the operating member is in a first position, the pressing portion of the operating member abuts against the positioning element to press the positioning element to engage to the handle so that the head is fixed in position relative to the handle; while the operating member is in a second position, the elastic element is released to push the positioning element toward the receiving portion of the operating member so that the positioning element disengages form the handle and the head can pivot relative to the handle freely.

Abstract: A powered adjustable jaw wrench comprises a wrench body having a handle portion and a head portion defining a stationary jaw, a movable jaw reciprocally mounted to the head portion, a driven mechanism operably connected to the movable jaw, and a drive mechanism mounted to the body member and including a power source and an indexing mechanism. The driven mechanism includes a worm driving the movable jaw and an indexing wheel operably connected to the worm gear. The indexing mechanism is driven by the power source and includes an oscillating pallet member. The pallet member incrementally drives the indexing wheel so as to convert an oscillating movement of the pallet member into an incremental rotatable movement of the indexing wheel.