Abstract: A blade holding jig arrangement for either grinding or honing a blade including a mounting bracket assembly with an elongate guide bar and a device for rigidly supporting the guide bar. A support arm can be pivotally mounted on the guide bar by means of a tubular support mounted on one end of the arm and extending perpendicular thereto. The guide bar extends through a passageway in the tubular support. The support arm can be moved along the guide bar for grinding. A clamp unit for clamping a blade includes a U-bracket with two legs and two clamping jaws adjustably mounted on the U-bracket between the legs. The clamp unit is attached to an end section of the arm remote from the one end of the arm. The clamping jaws can be moved towards one another in order to clamp the blade.

Abstract: A lathe for turning a workpiece by means of a headstock and a tailstock includes a lathe bed having an elongate main support structure and bedrails extending along a side of the structure, these rails adjustably supporting the tailstock. Leg supports are provided at opposite ends of the support structure and two pivot connectors each join a respective one of the bed ends to a support leg. The bed can be pivoted about a horizontal axis extending through these pivot connectors between an upright position which can be used when the lathe user is standing and a sideways position which can be used when the user is sitting. In the upright position, the bedrails are on top of the main support structure.

Abstract: A blade holding jig arrangement for either grinding or honing a blade including a mounting bracket assembly with an elongate guide bar and a device for rigidly supporting the guide bar. A support arm can be pivotally mounted on the guide bar by means of a tubular support mounted on one end of the arm and extending perpendicular thereto. The guide bar extends through a passageway in the tubular support. The support arm can be moved along the guide bar for grinding. A clamp unit for clamping a blade includes a U-bracket with two legs and two clamping jaws adjustably mounted on the U-bracket between the legs. The clamp unit is attached to an end section of the arm remote from the one end of the arm. The clamping jaws can be moved towards one another in order to clamp the blade.

Abstract: A lathe for turning a workpiece by means of a headstock and a tailstock includes a lathe bed having an elongate main support structure and bedrails extending along a side of the structure, these rails adjustably supporting the tailstock. Leg supports are provided at opposite ends of the support structure and two pivot connectors each join a respective one of the bed ends to a support leg. The bed can be pivoted about a horizontal axis extending through these pivot connectors between an upright position which can be used when the lathe user is standing and a sideways position which can be used when the user is sitting. In the uptight position, the bedrails are on top of the main support structure.

Abstract: A cutting tool piece is provided including a rear portion and a lead portion, the lead portion including a front section having an upper side angled downwardly and forwardly and a lower side angled upwardly and forwardly to form a transverse lead cutting edge. The rear portion includes a hole to secure the tool piece to a cutting tool and transverse cutting edges extending outwardly from side walls of the front section. A system is also described for cutting a bowl by coring out an interior portion of a wood block by applying the cutting tool which is curved and rotatably mounted to a post. Its lead end with the tool piece attached creates a circular groove. The cutting tool is advanced on a path which curves toward the central axis of the lathe.

Abstract: A cutting tool piece is provided including a rear portion and a lead portion, the lead portion including a front section having an upper side angled downwardly and forwardly and a lower side angled upwardly and forwardly to form a transverse lead cutting edge. The rear portion includes a hole to secure the tool piece to a cutting tool and transverse cutting edges extending outwardly from side walls of the front section. A system is also described for cutting a bowl by coring out an interior portion of a wood block by applying the cutting tool which is curved and rotatably mounted to a post. Its lead end with the tool piece attached creates a circular groove. The cutting tool is advanced on a path which curves toward the central axis of the lathe.

Abstract: A cutting tool piece is provided including a rear portion and a lead portion, the lead portion including a front section having an upper side angled downwardly and forwardly and a lower side angled upwardly and forwardly to form a transverse lead cutting edge. The rear portion includes a hole to secure the tool piece to a cutting tool and transverse cutting edges extending outwardly from side walls of the front section. A system is also described for cutting a bowl by coring out an interior portion of a wood block by applying the cutting tool which is curved and rotatably mounted to a post. Its lead end with the tool piece attached creates a circular groove. The cutting tool is advanced on a path which curves toward the central axis of the lathe.

Abstract: A spindle liner for use with in a spindle of a lathe or turning machine for supporting stock to be worked including a plurality of tube sections having a diameter selected to permit these sections to be placed end to end within the spindle. Each tube section has a passageway extending the length thereof and has threaded male and female connectors at opposite ends. The liner includes a plurality of tube inserts, each of which can be mounted within the tube passageway of a respective one of the tube sections. Each insert defines an axial passageway through which the stock to be worked can pass in a close filling manner. The tube sections and inserts are constructed so that the inserts are kept in a desired spaced-apart relationship in the liner.

Abstract: A cutting tool piece is provided including a rear portion and a lead portion, the lead portion including a front section having an upper side angled downwardly and forwardly and a lower side angled upwardly and forwardly to form a transverse lead cutting edge. The rear portion includes a hole to secure the tool piece to a cutting tool and transverse cutting edges extending outwardly from side walls of the front section. A system is also described for cutting a bowl by coring out an interior portion of a wood block by applying the cutting tool which is curved and rotatably mounted to a post. Its lead end with the tool piece attached creates a circular groove. The cutting tool is advanced on a path which curves toward the central axis of the lathe.

Abstract: A mechanism for clamping a banjo (10) toolrest or toolrest bracket to a lathe bed (51) which makes use of a sliding cam (40) which is actuated by a drive shaft (18). The cam is supported independently of the drive shaft by a support block (12) resting on a ledge (14) wich is formed in the base of the banjo. The cam is slidable with respect to the drive shaft along the length of this ledge on the banjo. This structure allows for sturdy clamping with minimal deflection at a predicable catching position along the length of the banjo rest. An eye bolt (20) is used to connect the cam to a clamping plate (22) which is positioned below two, spaced-apart rails (50) extending along the top of the lathe bed. The banjo rest has a generally open bottom (94) through which the shank of the eye bolt extends. Opposite ends of the drive shaft are rotatably supported by end walls (74, 76) of the banjo rest.

Abstract: A chuck for holding a workpiece in a machine such as a lathe including a jaw holder having a front side facing in the direction of the workpiece and radially extending slots in this front side. There is a mechanism for attaching the holder to the machine for turning about a central axis. Several jaw devices are detachably mounted in these slots and are radially movable therein. Each jaw device has an inner workpiece engaging surface that forms a profile when it is viewed from the front of the jaw device in the direction of the central axis. This profile comprises a central concave arc and two similar convex curves located at opposite ends of the concave arc. In a preferred version, the chuck is a scroll chuck having a scroll member rotatably mounted in the holder. The workpiece engaging surfaces can be serrated to increase gripping ability.

Abstract: An improved scroll chuck for holding a workpiece in a lathe including a jaw holder having a front side and a rear side, radially extending slots in the front side and means for attaching the holder to the lathe for turning about a central axis. Two or more jaw devices are mounted in the slots and are radially movable therein. A scroll member is rotatably mounted on the holder and has a spiral-shaped rib formed on a front surface thereof. This rib extends along recesses formed on the jaw devices whereby rotation of the scroll member causes the jaw devices to move in the radial direction. A pin member is arranged on one of the jaw devices and extends from a rearwardly facing surface of the device and into an elongate recess formed in the holder. This pin member prevents the jaw device from accidentally disengaging from the holder.

Abstract: A ram type pump is disclosed for pumping manure from a collection area to a storage area. The pump has a hollow cylindrical housing having a transfer portion and an actuator portion. Manure is pushed through the transfer portion by a reciprocating cylindrical ram slidably located in the housing. The ram is operated by a hydraulic actuator located in the housing actuator portion. The housing actuator portion is releasably coupled to the transfer portion. This releasable coupling retains a removable bearing and seal assembly concentrically located for sliding, sealing engagement of the ram. The housing transfer portion includes a guide bearing assembly for concentric sliding engagement of the ram during reciprocating movement of the ram. Also, the housing actuator portion includes radially disposed guide means for quick axial alignment of the ram in the housing.