Abstract: A handle assembly for an in-wall plumbing fixture includes a control valve having a rough plumbing attachment interface that is configured to connect to a rough valve. The control valve includes a control stem having a first number of teeth. The assembly includes a lever handle, with a second number of teeth that is different than the first number of teeth, and which is configured for attachment to the control valve. An adapter couples the control stem to the lever handle. The adapter has a set of adapter internal teeth corresponding in number to the first number of teeth and a set of adapter external teeth corresponding in number to the second number of teeth. The adapter can be included in an adjustment kit to align the handle lever.

Abstract: A discharge tap (10) for liquid containers, in particular for connecting to the outlet neck or the outlet opening of a transportation and storage container for liquids, having a tap housing (11) in which a valve body being pivotable around a valve axle by means of a handle (12) for opening and closing a flow cross section of an outlet tube (13) is arranged, said handle being provided with a handle stop and a housing dome of the tap housing being provided with a housing stop, said handle stop and said housing stop being able to be locked relatively to each other via a securing device (16) for securing the locking position, the securing device (16) comprising a stop bolt (17) being able to be displaceable between a bolting position and an unbolting position in a translatory manner in direction of the valve axle.

Abstract: A faucet with two outlets includes a main body, an outlet pipe, a hot water inlet conduit, a cold water inlet conduit, a cold water conduit, a filtered water conduit and a switch member. The outlet pipe has an inner channel and an outer channel. Filtered water flows through the inner channel, running water flows through the outer channel. The switch member laterally formed a peripheral wall of the main body, and having a valve core being mounted inside the main body. The valve core has control filtered water or running water outlet from the outlet pipe. The faucet with two outlets respectively outputs filtered water and running water through two different waterways in the outlet pipe and ensures simple structure, convenient operation and multiple water output modes.

Abstract: An exhaust line valve for an internal combustion engine. A closure body is arranged in a duct of the valve and is fastened to a shaft. The closure body when closed separates upstream and downstream duct sections. Two projections extend into the duct, each having a valve seat pointing in an opposite direction of the duct. By pivoting the closure body from its closed position, the sealing surfaces of the closure body are raised from their respective valve seats. A polymer seal is arranged on the valve seats and in the closed position the polymer seal sealingly contacts the associated sealing surface of the closure body. A circumferential surface of the shaft or the closure body is located in an edge region of the closure body. The polymer seal contacts in a sealing manner at least a region of the circumferential surface facing the upstream section of the duct.

Abstract: A magnetic valve security device prevents unauthorized opening of fire hydrant valves. The magnetic valve security device includes an inner cylindrical member having a lower end with a recess to receive the valve nut in a non-rotational relationship and an upper end with a first coupling element. The magnetic valve security device also includes an outer rotational member mounted over the inner cylindrical member for rotation with respect to the inner cylindrical member. The outer rotational member includes a second coupling element. The magnetic valve security device also includes a movable element having a non-magnetic body configured to receive a fitted magnetizable piece. The movable element is urged to a first position to decouple the first and second coupling elements. The movable element is movable to a second position to couple the first and second elements in a non-rotational relationship.

Abstract: A valve lockout device includes a body having a mount portion that defines a passageway. A cover positioned adjacent to the body defines a cover portion adjacent the mount portion thereby inhibiting access to the passageway in the mount portion. A position control arm extends through at least one of the body and cover, the position control arm defines a valve engagement portion and an adjustment portion. A lock aperture is formed in at least the other of the body and cover through which the position control arm extends. An adjustment member is positioned adjacent at least one of the body and the cover, the adjustment member defines an adjustment member aperture aligned with the lock aperture and is configured to engage the adjustment portion of the position control arm. Coupling the lock aperture and the adjustment member aperture inhibits relative movement of the body, cover, and adjustment member.

Abstract: The present invention is directed to a tap handle assembly for positioning about an installed tap body that includes an outwardly extending spindle. The tap handle assembly has a handle body means that has a body aperture and engagement means for engaging an outer end of the spindle, a pin positionable and moveable within the body aperture, and a biasing means to bias the position of the pin within the body aperture. When the tap handle assembly is assembled with the tap body, the pin is biased to the tap body to substantially prevent the movement of the spindle and to restrict the flow from the tap.

Abstract: An adjustable regulator and lock device for a pivotally rotatable damper adapted for installation in an air duct of an HVAC system is disclosed, which includes a pivot rod rotatably attached to the air duct and arranged for rotation with the damper. The pivot rod has coupled to it, a lockdown member having a plurality of radially extending teeth extending outwardly therefrom. A plate member is fixedly spaced from the air duct and has a plurality of correspondingly shaped and dimensioned tooth-shaped cutouts adapted to receive the teeth of the lockdown member to selectively lock the rotational position of the pivot rod and the damper in a selected angular orientation. The teeth of the lockdown member are biased by a coil spring toward engagement with the cutouts of the plate member, and yet selectively releaseable therefrom.

Abstract: A remotely controlled lockout device for an in-line gas flow control valve has a control shaft adapted to be operatively connected to a gas flow control valve and operable between a gas flow control valve open and closed position and a rotatable lock member operatively connected to the control shaft and rotatable between a lock member unlocked position in which the control valve is operable between gas flow control valve open and closed positions and a locked position in which the control valve is locked in a gas flow control valve closed position.

Abstract: A valve for the hydraulic braking of work machines comprises an outer casing provided with a longitudinal seat and with at least one-to-third connection port, a slider slideable along the seat and provided with a contoured portion to control passage of the fluid through the connecting ports, and a reaction surface which is connected to the third connecting port, and an actuation for actuating sliding of the slider in the seat, which comprises first elastic element, interposed between the casing and the slider to contrast pressurized fluid thrust against the reaction surface, second elastic element interposed between a first abutment element of the slider and a second abutment element arranged inside the casing, which are adapted to contrast thrust of the first elastic element, and a manual actuation for actuating loading/unloading of the second elastic element.

Abstract: A pressure washer wand is connectable to a source of fluid. The pressure washer wand includes a housing that defines an interior and a flow path disposed substantially within the interior. The flow path includes an inlet in fluid communication with the source and an outlet. A valve at least partially defines a portion of the flow path and is movable between a closed position and an open position in which fluid travels from the inlet to the outlet. A user interface is movable between an actuated position in which the valve is open and a non-actuated position in which the valve is closed. A lock member is substantially disposed within the interior and is movable between a locked position in which the lock assembly inhibits movement of the user interface, and an unlocked position.

Abstract: A ball valve has a body, a stem engaging a ball closing component having a main flow hole and auxiliary flow holes, and a spanner having shaft body and a handle. The shaft body has a base with a seating hole and a latch with an elastic pressure element located slidably in the base. In the body there is a recess which accepts an end of the latch to retain the spanner in a position where flow is effected through the auxiliary flow holes and not the main flow hole. The shaft body is connected with the stem by a screw. A handle is connected to an upper end of the shaft body.

Abstract: A faucet for a waterbowl includes a control knob, a lifting seat, a valve cover, a valve body and a spindle assembly which controls the water flow on-off. The spindle assembly is provided within the valve body, with a spindle of the spindle assembly extending through the upper end of the valve body and hinged to the lifting base. The valve cover is mounted firmly the top of the valve body. Between the control knob and the lifting seat is provided a rotatable locator connected to the lifting seat and rotatable round the lifting seat. The control knob is attached to the upper part of the rotatable locator by a hollow slidable connecting housing. A sliding rod provided in the slidable connecting housing is inserted into a through hole on the rotatable locator, with a return spring provided on the sliding rod. The faucet may avoid mishandling and scalding.

Abstract: In order to eliminate a difference in ESD resistance caused by the polarities of excessive voltages applied to an external terminal and enhance the ESD resistance of a semiconductor integrated circuit device to both positive and negative overvoltages, a protection element having a thyristor structure, for protecting an internal circuit from the positive overvoltage and a protection element made up of a diode D1 for protecting the internal circuit from the negative overvoltage are provided between the external terminal and a ground potential.

Abstract: A lock apparatus for a valve that has a valve body and an actuator stem protruding therefrom for selectively rotating a flow control member within the valve body between open and closed positions and a handle attached to the valve stem that defines a first axis. The lock apparatus includes a slider plate that is movably supported on the valve stem and is selectively slidable along a second axis that is substantially transverse to the first axis to a position wherein said slider plate contacts a portion of the valve body when the flow control member is in either of the open and closed positions to retain the flow control member therein and another position wherein the slider plate does not contact the portion of the valve body to permit the valve stem to be rotated. An opening is provided through the slider plate for receiving a portion of a locking device therethrough.

Abstract: A fluid controller comprises a pivotal member pivotally movable about the axis of a horizontal pin, a pair of rollable rollers rotatably supported by the lower end of the pivotal member and having an axis in parallel to the axis of the horizontal pin, a slope provided by the upper surface of a bonnet for allowing each roller to roll therealong in a plane orthogonal to the axis of the roller, and a stopper supported by the pivotal member so as to be movable between a position to engage with a valve stem and a position to be out of engagement therewith. The pivotal member is pivotally moved to roll the rollers along the slope and move the roller-supporting pivotal member upward or downward with the rolling movement, whereby the horizontal pin is raised or lowered.

Abstract: A faucet assembly includes a body connected to an outlet member on the top thereof and a water pipe connected to the underside thereof, a valve member movably received in the body and operatably connected to the outlet member so that when pushing the outlet member, the valve member is lowered to open the communication between the body and the outlet member. The body has a ridge extending radially outward from the outside thereof and a hook member connected to the outlet member so that when the outlet member is pushed, the hook member is engaged with the ridge to keep the valve member in position so that the water flows out from the outlet member. The hook member is disengaged from the ridge by shifting a bar connected to the hook member so that the valve member closes the body again.

Abstract: A tamper resistant faucet handle is provided for locking conventional sink or bath faucets in a closed or partially closed position. The tamper resistant faucet handle includes a handle body mounted to the flow control lever and a movable interference plunger that is slidably located within a plunger bore contained in the handle body. A locking mechanism locks the interference plunger in either an inward position or an outward position. When the interference plunger is locked in the outward position, it resides partially beyond the surface of the handle body for a distance sufficient for the plunger to interfere with movement of the handle body and consequently the flow control lever. In this manner, the locked plunger limits the range of movement of the flow control lever to lock the faucet in a closed or semi-closed position. The locking mechanism can be released and the plunger returned to the inward position, thus re-establishing a full range of movement for the handle and the flow control lever.

Abstract: An improved latch mechanism for a fluid flow control valve. The latch mechanism having a latch body, a spring, a plunger and a thumb release lever for disengagement of the plunger. The latch mechanism is attached to a valve handle which controls the fluid flow rate through the valve. Provided with the latch, the handle and thereby the valve can be locked into either a closed or open position at the limits of the valves' necessary rotation thereby preventing inadvertent opening or closing of the valve. The thumb release lever disengages the plunger with detent notches provided in the valve body allowing safe and efficient single handed operation of the handle and latch mechanism even under adverse environmental conditions when operator dexterity is impaired by gloves.

Abstract: A child-resistant handle to be mounted to a valve stem to which is affixed a cogwheel adapter by a shoulder screw. The shoulder screw rotatably mounts the freely rotatable handle to the valve stem. The handle has an inverted cup shape that extends over and covers the cogwheel adapter. A clutch member connected to the handle with a resilient member engaging the clutch to normally keep the clutch member out of engagement with the cogwheel adapter. The clutch member linearly shiftable to engage the cogwheel adapter whereby rotation of the handle will cause a like rotation of the valve stem.

Abstract: An improved spring-loaded latching and locking mechanism for a rotatable control of the type having a stem journaled in a body and rotatable about an axis in a boss on the body. The stem has a protuberance for engagement with the handle. The handle comprises a boss-engaging end portion, a stem-engaging portion, a slider-riding portion, and a grip end portion. The slider-riding portion has a slider with a tang extending therefrom. Each side of the slider-riding portion also includes a pair of springs mounted on a rail cutout so that the springs provide resistance against movement of the slider. The slider-riding portion includes an aperture for securing a lock to arrest movement of the slider. The boss has surfaces located to correspond to predetermined positions of the stem. These surfaces are engageable by the tang which, when so engaged, restrains the handle from rotation and prevents removal of the handle from the stem.

Abstract: A safety shut-off device is disclosed. The device is adapted for use with a gas welding apparatus, the apparatus having a torch handle and a supply of a pressurized combustion reagent. The safety shut-off device has a valving assembly that is adapted to be positioned between the torch handle and the supply of pressurized combustion reagent. The valving assembly is actuatable between a first state and a second state. In the first state, the torch handle is operatively connected to the supply of pressurized combustion reagent. In the second state, the handle is operatively disconnected from the supply of pressurized combustion reagent. The valving assembly is biased towards the second state and actuatable from the first state to the second state substantially instantaneously. The safety shut-off device also has an actuating mechanism. At least a portion of the actuating mechanism is adapted to be positioned on the handle for being grasped by the user of the gas welding apparatus when the user grasps the handle.

Abstract: A bucket valve with a removable handle includes a tubular valve body, a piston disposed with the valve body and a crank arm integrally formed of a central sleeve and two spaced fingers. The fingers are pivotally retained to the piston. A drive shaft is drivingly disposed in and extends from the central sleeve of the crank arm to project through and beyond the valve body to connect by a distal tip thereof to a handle via an axle sleeve. An `L`-shaped latch is resiliently retained in the axle sleeve whereby the combined axle sleeve and handle are removably retained to the drive shaft. The handle has a forked tip forming an outer upper face, a central fork and an outer lower face against each of which a knob can abut in a first, second and third position respectively.

Abstract: A faucet for controlling the dispensing of liquids includes a valve body having a valve chamber with a valve element movable between first and second positions for controlling flow between an inlet and the outlet. An operating stem extends from the valve element to a position exteriorly of the body through a bonnet connected to the body. A safety-type cam actuator is joined to the stem and is pivotally movable to selectively move the valve element between the first and second positions if it is first moved inward radially of the stem. Wall forming portions extending outwardly from an insert located between the bonnet and the body to define guide surfaces closely adjacent the stem and the cam actuator to prevent undesired tilting of the stem and the cam actuator.

Abstract: A micro-valve assembly for providing precise regulation of fluid flow between an input port and an output port comprises a valve body configured to installed with the valve assembly and forming therewith a fluid flow chamber between the fluid flow rate control port and the output port, the valve body having an internally threaded cylindrical portion. A rotatable valve adjustment member has an externally threaded cylindrical portion sized to engage the internally threaded cylindrical portion of the valve body. The externally threaded cylindrical portion of the rotatable valve adjustment member has an internally threaded axial bore. The internally threaded bore of the rotatable valve adjustment member has a longitudinal axis and a pitch finer than that of the externally threaded cylindrical portion thereof.

Abstract: A valve handle latching assembly having a selectable latching slider which engages a detent on a fluid control device such as a ball valve. During assembly, a particular slider is selected for inclusion in the final assembly resulting in a valve tailored for its intended purpose. Depending upon which latching slider is selected, the valve handle latching assembly latches in the open and/or closed position(s) thereby preventing inadvertent rotation. The latching handle assembly may be manually disengaged to permit rotation of the handle in the opposite rotational direction.

Abstract: A device for locking a lever for pivoting a valve contained in a valve housing. A recess is formed in the valve housing. An annular groove is formed in the recess. A spring is sited in the recess. A latch has a relatively large middle section connecting an upper section with a lower section. The latch is sited in the recess so that the lower section thereof is inserted in the spring and that the middle portion thereof is sited on the spring. A C-ring engages in the groove so that the latch is trapped in the recess. A hole is formed in the lever. The hole has an upper section and a relatively large lower section. A wedge surface is formed on the underside of the lever. A button has a body connecting with a relatively large head and a groove formed about the body. The body of the button is inserted through the upper section of the hole. A C-clip engages in the groove formed about the body so that the button is trapped in the hole.

Abstract: An improved butterfly valve for intercepting a conduit where substances flow, especially suitable for the pharmaceutical, alimentary and chemical fields The valve comprises an annular body (1) integral with the conduit and acting as a support for the rotation stem (4) of the butterfly valve dish (3), which is operable at one end by an actuating lever (6) to open or close the internal port of the annular body (1) where a sealing member (2), tightly engaging with the butterfly valve dish (3) in the closed position, is housed. The body (1) comprises means for allowing an extremely quick and easy mounting and dismounting operations for cleaning purposes without affecting the sealing ability, operability and minimum flow resistance when the valve is fully open. The sealing member (2) is shaped to require a low effort while closing the valve as well as assuring the seal even in correspondence of the stem (4) of the butterfly valve dish (3).

Abstract: A ball valve comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball element having a conduit therethrough which communicates with the inlet and outlet ports. The ball element is movable by a control lever between an open position and a closed position. The valve is provided with a lockable security device which automatically locks the ball element in a positive closed position when the control lever moves the ball element from an open position to a closed position. The lockable security device includes a rotatable cylinder, a locking cylinder slidably mounted on the rotatable cylinder, a supplemental locking member to selectively allow manual locking of the locking cylinder in a position to prevent sliding movement of the locking cylinder on the rotatable cylinder.

Abstract: A rotatable control device including a body housing a control structure and having an external box; a control shaft journalled in the boss for rotation about an axis and having an internal portion connected to the control structure and an external portion extending outwardly from the boss; an operating handle having an inner end portion connected to the external portion of the control shaft, a gripping end portion for rotating the control structure between first and second positions and an intermediate portion; first and second locking structure circumferentially spaced on the body at locations corresponding to the positions of the intermediate portion of the handle when the control structure is in the first and second positions, respectively; a slider member slidably mounted on the intermediate portion of the handle for reciprocative movement between locked and unlocked positions; interlocking structure for cooperating with the first and second locking structure, when the handle is in the first and second po

Abstract: A lockout module is adapted to be mounted between an actuator-to-valve mounting kit and a valve actuator, and is operable to lock the valve in either an opened position or a closed position. In a preferred embodiment, the lockout module comprises a housing, a spindle, a lockout pin, and a lockout tab. The lockout pin is inserted in the housing for selective engagement and blocking of the spindle or for releasing the spindle. A padlock is locked through a lockout wheel on the lockout pin and the lockout tab, the lockout tab engaging a groove within an appendage of the housing to prevent pin and valve movement. In an alternative embodiment, the lockout module comprises a housing, a spindle, a pair of lockout pins, and a pair of pull pins. The lockout pins are inserted in the housing for selective engagement and blocking of the spindle or for releasing the spindle.

Abstract: A tamper-proof valve which includes a valve body fitted with a transverse bore, an entry port and outlet port communicating with the transverse bore and an inner body seat for receiving a tapered inner body having a notch adapted for manipulation in alignment with the entry port and outlet port in open configuration and transverse to the entry port and outlet port, in closed configuration. A plug is provided on the top of the inner body for seating one end of a spring which is slidably encased in a collet. A square key is also slidably disposed in one end of the collet and is adapted to seat in a key seat provided in a top valve assembly which mounts on the valve body.

Abstract: A tamper-proof locking mechanism for a rotatable control device, such as a quarter turn valve including a valve member connected to a stem journalled in a body housing the valve member and an operating handle connected to the stem for rotating the valve member between open and closed positions. The locking mechanism includes a pair of lugs on the valve body at circumferentially spaced locations corresponding to the locations of an intermediate portion of the handle when the valve member is in the open and closed positions. A slider member is slidably mounted on the intermediate portion of the handle for reciprocative movement between a locked position and an unlocked position. The slider member includes a latch element having an open portion for receiving the lugs and arranged to restrain both rotational and axial movement of the handle when the handle is in the open or closed position and the slider member is in the locked position.

Abstract: A flow control device for use in a fluid or gas line is disclosed. In one example, the device controls the flow of air to the brakes of a large vehicle such as a semi-trailer truck. The device includes a housing having an inlet port and an outlet port both of which communicate with the interior of the housing and a moveable valve assembly which selectively can close or open the ports with respect to one another. The valve assembly includes means for axially moving the assembly and locking it in open and closed positions. Means are provided for biasing the valve assembly to an open position to prevent accidental closing of the valve which possibly could result in the application of brakes of the vehicle.

Abstract: A ball valve of the type comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball defining a conduit communicating with the inlet and outlet ports. The ball is actuated by a control lever to rotate between a first open position and a second closed position of the valve; a manually operable lock is provided to retain the control lever and the ball element in those first and second positions and in at least one intermediate operative position.

Abstract: A latching device for the actuator in a valve installation. The actuator includes a handle for rotating a valve stem and a latch slidably mounted on the handle. The latch has one edge which abuts a stop when in the closed position and an opposed, angularly disposed, camming edge facing a stop at the open position.

Abstract: The invention concerns a manually operated control valve on a pneumatically or hydraulically operated equipment which has a control shaft positioned substantially in a horizontally oriented direction. By turning the control shaft to and fro against an increasing resistance the attached motor of the equipment will turn in one direction or in the other direction. The control shaft is provided with a hose or a piece of hose together with an extension in the shape of a tube or the like, and the hose serves as a universal joint which retains its operating properties independently of any bending of the hose due to position changes of the equipment.

Abstract: A soil aerating apparatus comprising a towing vehicle, a soil aerating device comprising a drum, tines extending radially from the drum, and a frame for supporting the drum for rotation about a horizontal axis. The frame includes a forward end with a draw arm, and the forward end is pivotally attached to the towing vehicle so that the frame is raised and lowered by moving the draw arm. The apparatus also includes a mechanism for moving the draw arm comprising a hydraulic cylinder including a piston rod and connected between the draw arm and the towing vehicle, and a valve operably connected to the cylinder for extending and retracting said piston rod. The valve includes a valve member movable between a position wherein the valve extends the piston rod, a position wherein the valve holds the piston rod in a fixed position, a position wherein the valve retracts the piston rod, and a position wherein the valve permits the piston rod to extend or retract in response to movement of the draw arm.

Abstract: A system for dispensing fluid from a container. The container is pressurized by supplying gas into the container thereby forcing the fluid out of the container through a siphon tube and an outlet valve in the container. The system utilizes a valve assembly having two valves, one for enabling the flow of the gas into the container and the second for allowing the flow of the fluid out of the container. The valve assembly is mounted in a neck member that is secured to an opening in one of the walls of the container. Arranged within the neck is a deformable seal that is compressed between a body portion of the valve assembly and an inner surface of the neck member. A non-threaded retaining ring holds the valve body portion of the valve assembly within the neck member and serves to apply the force to the valve body portion for compressing the seal.

Abstract: A pressure-balanced three-way transfer valve for controlling fluid flow into one of two fluid lines includes a pair of cam actuated valves actuated by a single actuator to move a respective valve to an open and closed position. Pressure balancing of the valve rods is accomplished by a fluid passage through each of the respective rods to allow lower pressure to a respective balancing chamber. The valves further include respective balancing surfaces.

Abstract: An improved valve system for obtaining access to a container of fluid. In a container of fluid, and particularly a keg for beer, a valve assembly receiving member or keg neck extends from the top of the container. A sealing mechanism is provided to secure the valve assembly in sealed relationship with the keg neck and to allow access to the fluid contained by actuation of the valves. More specifically, the valve neck has a groove in its inner surface to receive a resilient retainer ring which maintains the valve assembly in place. In addition, a safety feature is provided to prevent inadvertent expulsion of the valve assembly should the retainer ring be dislodged while the keg is pressurized. A siphon tube extends from the valve assembly to a position adjacent the bottom of the keg when the valve is secured within the keg neck.

Abstract: A latching and locking mechanism for a rotatable control of the type having a stem journaled in a body and rotatable about an axis in a boss on the body. The stem has a protuberance for engagement with a handle. The handle comprises a boss-engaging end portion, a stem-engaging portion, a slider-riding portion, and a grip end portion. The slider-riding portion has a slider with a tang extending therefrom and means for securing a lock to restrict movement of the slider. The boss has surfaces located to correspond to predetermined positions of the stem. These surfaces are engageable by the tang which, when so engaged, restrains the handle from rotation and prevents removal of the handle from the stem.

Abstract: A fabricated adapter valve for mounting on the exterior of a transportation tank for liquid, such as for instance gasoline or oil, providing for coupling with a compatible loading coupler of a loading island, for loading the liquid into the transportation tank. The valve arrangement provides an adapter coupler section having an exterior coupling configuration as defined by the American Petroleum Institute, for universal coupling with loading couplers of a loading station, and a valve which is of smaller size and less weight, having fewer places to leak and possessing fewer parts, and therefore more economical to manufacture, as compared to prior art valve arrangements.

Abstract: A butterfly type valve is provided with an annular sealing ring disposed in a groove in the bevelled periphery of the circular valve plate. The operating shaft is journalled in a radially disposed external boss and an operating handle having a spring biased locking plunger is secured to the shaft. A locking plate having a plurality of locking apertures is adjustably clamped to the boss for operative engagement with the locking plunger on the handle.