Abstract: Cutterheads operating in the gap between in-feed and out-feed tables of planers, jointers and the like wood cutting apparatus are provided with a body of increased diameter and a gib having a chipbreaker pocket shape that will expose only a minimum projection of the knife before the chip must curl into the pocket thereby reducing the potential bite of a kick back such as might occur by a tipping of the wood workpiece or by a pull out of the wood grain during the feeding of the workpiece to the cutting knives. The knives of the cutterhead protrude only as much above the cutterhead body as is required not to interfere with the advance of the workpiece per revolution of each knife, the gib is positioned with its chipbreaker pocket down from the tip of the knife no further than is necessary for chip thickness, and the chipbreaker pocket has a radius just sufficient to accommodate the curled chip at the maximum depth of the cut.

Abstract: A ball check valve having a body with a through passageway having an internally restrictive frustoconical seat is provided with a frustoconical metallic backup member having a different cone angle than the seat and a large diameter ball having a maximum diameter greater than the maximum diameter of the backup member, the backup member having a contoured large diameter axial end face for receipt of a portion of the ball such that a seal is provided between the seat and the ball and between the backup member and the seat and means urging the ball against the backup member large diameter axial end and the backup member against the seat.

Abstract: In tuned rubber/viscous torsional vibration damper assemblies of the kind having supporting rotor disk means mounting an inertia mass coupled to the disk means by viscous damping medium and elastic tuning spring, spacing and sealing rubber rings are produced by providing a low melting point metal barrier in the assembly between rubber ring accommodating grooves and the viscous damping medium working chamber defined within the inertia mass, the rubber rings molded and vulcanized in situ in said grooves and to the rotor disk and the inertia mass, whereafter the barrier is melted out and the damper completed. The dampers may be provided with rubber spacer and bumper fingers extending from the rubber rings into the working chamber of the damper. The rubber rings may also be keyed to the inertia mass by means of integral lugs extending into socket apertures in the inertia mass. The dampers may be coated with a rubber skin on outside areas, the skin being connected to exposed areas of the rubber rings.

Abstract: A machine tool data system for receiving and storing abbreviated instructions representing blocks of machine tool control data and including pattern type instructions such as copy, mirror image and tool change each involving a series of such blocks, the computer responding to editing instructions such as insert or delete as to specified lines of stored instructions or computing the blocks represented by the stored instructions for transmission to an output device such as a tape punch, the computer generating the blocks of a pattern type series at the rate of utilization of said blocks by the output device. A machine tool may be connected on line and controlled by the computer simultaneously with the editing or tape preparation operations thereof, and the machine tool may be controlled manually from a data terminal on line with the computer when the terminal is not in use for tape preparation.

Abstract: A cyclic lubricant distributor valve has an inlet block unit, an end block unit and at least three intermediate block units. Each of the intermediate block units has a bore, a spool movable in the bore and at least one lubricant outlet. A series of ports and passages are formed in the various block units to provide for cyclic operation of the distributor valve. Each of the intermediate block units is formed of a base member, in which the outlet (or outlets) is formed, and a separate and separable spool member, in which a bore is formed containing a movable spool. Through bolts connect the inlet block unit, the end block unit and the base members of the intermediate block units in fixed assembly. Other bolts connect each of the spool members in fixed assembly only with its corresponding base member.

Abstract: A turret indexing system for a turret punching machine having a plurality of equally spaced tool punching stations carried on the turrets which may be rotatably positioned to place selected punching tools in register with a punching ram. Turret indexing is accomplished with a pneumatic cylinder driven reciprocating drive arrangement utilizing a pneumatically actuated clutch to drive the turrets through a one direction, incremental indexing rotation which is equivalent to one tool punching station spacing. A shot pin arrangement is effective to lock the turrets in an operating position and provide small corrective repositioning of the turrets, when required, to precisely position the turrets relative to the punching ram. A control system provides an automatic sequenced cycling of the indexing system to position each required punching tool in an accurate punching position.

Abstract: A punch guide and stripper is molded from plastics material to the exact configuration of the punch and is supported and reinforced by a rigid punch receiving member to engage a workpiece around the slug to be punched therefrom and strip the punch from the workpiece without bulging or damaging the workpiece. The plastics material is molded in situ around the active end or nose of the punch within a rigid metal punch guide at the punch exiting end of the guide to a height or thickness sufficiently to guide and laterally support the nose of the punch throughout its stroke. The surrounding rigid punch guide prevents lateral displacement or distortion of the plastics material and terminates either flush with or just short of the workpiece engaging face of the plastics material. The active end of the punch is of smaller diameter than the main body of the punch and may have any desired configuration with a shoulder extending from the reduced section to the full diameter of the punch.

Abstract: Rubber viscous torsional dampers in which an annular inertia mass is coupled by elastic tuning spring, spacing and sealing rings to a radially outwardly extending circular body on a radially inner hub portion, have the elastic rings secured fixedly to axial surfaces of either or both the body and; the inertia mass by means of respective flat disks which are rigidly unyielding in plan and are permanently secured by vulcanized bonding to the rings, the disks being rigidly secured to the inertia mass and/or the body by structural adhesive.

Abstract: An attachment for cutting machine tools, such as band saws, spindle-shapers, sanders and the like, controlling the feed path of the workpiece to the cutting tool to form desired workpiece contours, such as circles, arcs and the like, has a grooved track bar easily locked on and removed from the machine bed or table carrying a slide in the groove which has a workpiece centering pivot pin projecting therefrom. A workpiece is either directly pivoted on the pin or secured to a templet pivoted on the pin and is rotated about its pivot support against the cutting tool. The slide may be locked in the groove at a selected distance from the tool, may be pushed against a stop at a selected position in the groove or may be shifted by a cam to control the feed path of the workpiece for forming desired contours. Circles of selected diameters, elipses of selected minor and major radii, heart shapes, four leaf clover shapes and the like are easily developed.

Abstract: A tool changing mechanism or assembly for a machine tool, which has a spindle for rotating a tool on an operating axis and has a tool storage magazine having at least one tool receiving means such as a socket for supporting a tool on a storage axis, has an improvement which enables increased distances between the spindle and the storage axis. The improvement is that a tool changing arm is mounted on a housing or a shuttle to rotate about a first axis and the shuttle is mounted on the frame of the machine tool so that it can be moved between two linear positions as the arm is rotated so that the axis of rotation of the arm is shifted in a linear path.

Abstract: A machine tool is illustrated having a workpiece support table on which a workpiece is moved by an automatically controlled workpiece gripper movable in the X and Y directions. Movement of the gripper in at least the X direction is controlled in reference to a base line which is set within the automatic control in response to abutment of the workpiece edge against a table supported stop, the stop being movable against a spring from a rest position through a first or base line set in position in response to abutment by the moving edge of the workpiece carried by the gripper. Movement of the stop through the first position automatically sets the base line within the automatic control.

Abstract: Systems for flocculation processing in water purification treatment in which a first jet flash mixing field of relatively high specific energy requirement and turbulence intensity is provided for intimate mixture of the flocculant and influent water to produce a thoroughly mixed product stream having residual energy, and in which the product stream from the first mixing field is used as the motive stream to power a flocculation field of lower specific energy requirement and turbulence intensity.

Abstract: Methods of the activated sludge type for treating sewage utilizing specific mixing regimes and oxygen demand rates. The systems are particularly advantageous in utilization of relatively pure oxygen in a final stage treatment zone, and in which no more than 10% of the total oxygen requirement for all zones is required for high purity oxygen.

Abstract: A turret punch machine tool equipped with controlled automatic x-y axis workpiece movement mechanisms for moving the workpiece over a stationary work table section adjacent a punching station is provided with a separate laser beam generator and with a tool frame carried vertically retractable and extendable laser cutting head in optical communication with the beam generator. The beam generator is capable of producing both laser pulses of varying duration and spacing or a continuous beam. The cutting head is provided with two gas inputs one for use with the continuous beam, a second for use with the pulse beam, and controls are provided to automatically provide varying combinations of use of the punch and laser.

Abstract: Activated sludge waste water treatment systems utilizing influent and/or sludge return flow as pressurized gas-liquid contactor motive stream source and having improved energy efficiency. Staged flow control systems are also disclosed.

Abstract: A pump having a planetary gear drive connected to a source of rotary power drives a barrel cam to reciprocate, with a smooth cycloidal motion, a series of pistons operatively connected to the cam. Each piston is reciprocatingly disposed in a cylinder for pumping fluid from a pump inlet to an outlet connected to the cylinders through a series of valve chambers.

Abstract: A punch guide and stripper is molded from plastics material to the exact configuration of the punch and is supported and reinforced by a rigid punch receiving member to engage a workpiece around the slug to be punched therefrom and strip the punch from the workpiece without bulging or damaging the workpiece. The plastics material is molded in situ around the active end or nose of the punch within a rigid metal punch guide at the punch exiting end of the guide to a height or thickness sufficiently to guide and laterally support the nose of the punch throughout its stroke. The surrounding rigid punch guide prevents lateral displacement or distortion of the plastics material and terminates either flush with or just short of the workpiece engaging face of the plastics material. The active end of the punch is of smaller diameter than the main body of the punch and may have any desired configuration with a shoulder extending from the reduced section to the full diameter of the punch.

Abstract: A turret punch machine is disclosed having upper and lower turrets each equipped to carry a plurality of tools. The turrets carry a plurality of modules projecting from a central turret section in spoke-like fashion. The modules on the upper turret are each adapted to carry one or more punching tool assemblies and the modules on the lower turret are each adapted to carry one or more die tools. The modules are attached to and rotate with the turret by interfitting connections adjacent the modules' inner peripheries, the modules being easily detachable from the turrets to allow quick tool and/or module change.

Abstract: A machine tool data system for receiving and storing abbreviated instructions representing blocks of machine tool control data and including pattern type instructions such as copy, mirror image and tool change each involving a series of such blocks, the computer responding to editing instructions such as insert or delete as to specified lines of stored instructions or computing the blocks represented by the stored instructions for transmission to an output device such as a tape punch, the computer generating the blocks of a pattern type series at the rate of utilization of said blocks by the output device. A machine tool may be connected on line and controlled by the computer simultaneously with the editing or tape preparation operations thereof, and the machine tool may be controlled manually from a data terminal on line with the computer when the terminal is not in use for tape preparation.

Abstract: A turret punch machine tool equipped with controlled automatic x-y axis workpiece movement mechanisms for moving the workpiece over a stationary work table section adjacent a punching station is provided with a separate laser beam generator and with a tool frame carried vertically retractable and extendable laser cutting head in optical communication with the beam generator. The beam generator is capable of producing both laser pulses of varying duration and spacing or a continuous beam. The cutting head is provided with two gas inputs one for use with the continuous beam, a second for use with the pulse beam, and controls are provided to automatically provide varying combinations of use of the punch and laser.