Abstract: A punch and die assembly specifically adapted for use as a parting tool is disclosed. The punch has a working tip of rectangular cross section formed with a radius curved convex shear bottom. The punch mates with the die such that the punch side wall to die side wall clearance is maintained or increased at the corners.

Abstract: A method of making a tuned torsional viscous damper comprising assembling preformed elastic tuning spring, spacing and sealing rings in engagement about concentricity maintaining shoulder means located at the radially inner sides of grooves substantially wider than the rings within radially inner portions of confronting spaced axially directed faces within a ring shaped inertia mass having a radially inwardly opening annular working chamber, mounting the inertia mass on a supporting disk, including placing within the working chamber and between the rings a radially extending body on the supporting disk, with parallel confronting working surfaces on the body and on said faces in shear film spaced relation having regard to the viscosity of damping medium to be filled into the chamber, bonding the elastic rings to the body and to the inertia mass, and filling viscous damping medium into the chamber.

Abstract: Grinding apparatus and control system for forming non-circular punching tools comprising a grinding wheel having a cylindrical grinding surface, a rotary table with its axis parallel to the grinding wheel axis and carrying orthogonally movable slides such that one slide at a time may be actuated to generate successive flat sides of a punching tool, the table axis being positionable to define a center of rotation for an arcuate face of the punching tool which is generated upon rotation of the table, a fixture for the grinding wheel dressing tool serving to automatically define the location of the grinding wheel surface relative to the axis of the rotary table, and a computer-controlled digital system which senses the shape to be formed, parameters of the shape to be formed and which causes the slides or rotary table to be properly actuated so as to grind a punching tool of appropriate size and shape.

Abstract: A tool holder includes a shank that has an axial passage therethrough for conducting coolant. The end of the shank remote from the cutting tool has a hollow stop screw which determines the effective length of the tool holder and which contains a check valve assembly, thus enabling the tool holder to be used in machine tools that rely upon the build-up of an air pressure as a consequence of insertion of the tool as one of its control functions.

Abstract: A method of making a tuned viscous torsional vibration damper assembly of the type having supporting disk means with a radially outwardly extending circular body and a radially inner hub portion adapted to be secured to a rotary member such as a crankshaft subject to vibrations to be damped by the damper, the body being received concentrically within a radially inwardly opening annular working chamber of an annular inertia mass, a viscous damping medium in said chamber between shear film spaced working surfaces of said body and said inertia mass, and said inertia mass having concentric annular grooves at opposite sides of and facing axially toward said body contiguous to the opening from said chamber, with elastic tuning spring, spacing and sealing rings coupling opposing surface areas of said inertia mass in said grooves and opposing surface areas on said body, comprising assembling the rings in the grooves, placing concentricity maintaining shoulder means across radially inner open sides of the grooves wher

Abstract: A machine tool controller, for automatically controlling the Z axis operations of a machine tool, along a direction parallel with the axis of a tool-holding spindle, includes a system for executing programs in accordance with data which is manually entered into the system for each of a plurality of individual machining operations. The data, representative of two distances, respectively above and below the surface of the work to be machined, feed speed during machining and spindle rotating speed, may be manually entered through the keyboard of a control panel, or the two distances may be entered directly from a position counter which monitors the Z axis position of the spindle, and successful data entry is verified by indicator lights. All of the data for a single machining operation is stored in a memory unit, associated with the microprocessor system, at a single storage location, with each separate item of data stored in a specified memory location of the storage location.

Abstract: A method of and apparatus for transferring gas to liquid, for example, air to liquid in an aeration process. Included is a novel combination air-liquid conduit and a method of making same, a novel jet aerator wherein the outlet section is shortened to include only a converging portion, a novel aeration system utilizing the conduit and jet aerator aforesaid and a novel coupling means for mounting the aerator on the conduit.

Abstract: A single line lubricant reversing feeder for use in a centralized lubricating system, the feeder having a valving piston and a metering piston, by virtue of the movement of which a measured portion of the lubricant supplied to the feeder is delivered to a point of use such as a bearing, and the remaining portion is directed to the next succeeding feeder in the system. The feeder is arranged so that only a single check valve is required to accomplish the foregoing.

Abstract: A lubrication device employing a reciprocable plunger, as the actuating member, which is driven by a rotatable cam member through a pivoted rocker arm engaged with the plunger and having roller means engaging the cam, with the axis of the plunger, respective pivotal axes of the cam, arm and roller means, and line contacts between the roller and cam and between plunger and arm being so related that actuating forces are transmitted from the cam to the plunger substantially on the axis of the plunger, substantially eliminating undesirable lateral forces on component parts and enabling the use of simple bearing structures for the cam shaft. Operation is further improved by a novel disposition of valve means in the lubricant supply line.

Abstract: A method and apparatus for dissolution of comminuted organopolymeric materials such as water and waste water flocculant polymer, in which the polymer is educted into a series of ejector mixers and into a mixing zone.

Abstract: A tuned torsional viscous damper has mounted on a flat supporting disk a ring-shaped inertia mass comprising a pair of complementary stamped heavy gauge annular sheet metal inertia plates each of which has a radially outer axially facing annular portion in parallel shear film spaced relation to the disk body having regard to viscous damping medium in the damper, radially outer extremities of said radially outer annular portions being secured together, radially inner annular axially facing portions of substantial width of the stamped inertia plates being substantially offset axially away from the disk body by means of annular transversely angular integral offsetting bends connecting the radially inner portions to the radially outer portions, elastic tuning spring, spacing and sealing rings bonded in the recesses defined by the radially inner plate portion and extending into bonded engagement with the disk body.

Abstract: A machine tool, such as a turret punch, having one or more individual tools positioned in a tool holder member attachable to the turret and easily removable therefrom whereby tools are changed by changing turret tool holder members rather than by changing the individual tool.

Abstract: Liquid coolant and lubricant is intermittently pressure fed through a hollow drill stem to the tip of a drill, preferably a spade drill, against the workpiece by compressed air from the conventional machine shop air line which is fed over and released from a column of the liquid coolant and lubricant at selected frequencies and for selected durations without the use of motors, pumps, or other propelling devices. A pair of manually adjusted controls select the frequency of intermittent coolant feed and the length of feed duration within the selected frequency to maintain desired operating temperatures at the drill tip while effectively flushing out chips cut from the workpiece.

Abstract: A control system having a stored program digital computer for transmitting commands to digital servos for one or a plurality of punch presses; for changing new commands to correct for preceding servo errors and/or mechanical tolerance errors in the servos; for monitoring machine tool and servo condition and supervising punching, tool change and positioning operations; and having provision for assisting in the generation of coded record command tapes on the basis of incremental and/or absolute dimensional input, on a time sharing basis with automatic operation of the servos from a previously generated record tape.

Abstract: A closed hydraulic system for band saws transmits manually actuated control of the saw blade tension, provides for easy and remote reading of blade tension, instantly stops rotation of the upper saw blade wheel in case of blade breakage, shuts off the motor drive when blade breakage occurs, and prevents restarting of the motor until a new blade is installed and tension is applied thereto. The upper idler blade band wheel is equipped with a spring loaded brake held in a non-braking position by hydraulic fluid which is pressurized from a manually actuated crank which shifts the upper wheel to apply tension to the saw blade band and when the band breaks to release the tension, the fluid pressure drops sufficiently to allow the springs to actuate the brake for stopping the wheel. At the same time, a fluid pressure actuated switch in the electric circuit for the driving motor is opened to prevent restarting of the motor until tension is once again applied to a new saw band.

Abstract: A fixture for holding a spade drill on a reciprocable grinder table during the sharpening thereof comprises a base for resting on the grinder table, a rocker supported on the base and pivotable to various fixed positions for providing a selected dip angle, and means for supporting the spade drill on the upper side of the rocker in a predetermined angular relation with respect to the horizontal table surface, such angular relation providing the rake angle for enabling grinding the top-rake flat of the drill. The base can be tilted to rest on a rear support surface which is disposed in a predetermined angular relation to enable grinding of the clearance portion of the spade drill at a proper angle. Selection of skew angle is also provided as a feature. The fixture can accommodate an entire series of spade drills to be ground to various dimensional specifications.

Abstract: Grinding apparatus for forming noncircular punching tools comprising a grinding wheel having a cylindrical grinding surface, a rotary table with its axis parallel to the grinding wheel axis and carrying orthogonally movable slides such that one slide at a time may be actuated to generate successive flat sides of a punching tool, the table axis being positionable to define a center of rotation for an arcuate face of the punching tool which is generated upon rotation of the table, and a fixture for the grinding wheel dressing tool serving to automatically define the location of the grinding wheel surface relative to the axis of the rotary table.

Abstract: A Floating Tool Holder includes a shank having an annular sleeve secured to one end thereof, there being a tool chuck assembly retained between the end of the shank and a flange on the sleeve, driver means for transmitting rotary motion from the shank to the tool chuck assembly, there being a pair of annular bearings which engage the tool chuck assembly and enable slight relative radial movement, the bearings having flat surfaces which constitute a thermal diffusion of a metal boride, such as di-iron boride. There is a seal between the tool chuck assembly and the sleeve, and centering means acting between the shank and the tool chuck assembly and constructed to enable the conducting of a coolant through the shank into the tool chuck assembly, certain components being further constructed to enable length of the device to be minimized. The tool chuck assembly has a deep hole receptive of a substantial portion of a tool.

Abstract: A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit, and such assembly includes means by which such assembly is retained together, especially during handling away from the frame of the punching device. To this end, the sleeve has a circumferential groove in which there is a radial aperture, and a retainer member is disposed in the groove and has a portion that projects radially through the radial aperture into an elongated recess in the punch body.

Abstract: A Punch and Stripper Assembly for use in a punch press includes a punch with a shoulder at an intermediate portion thereof, a head threaded onto an end of the punch for being engaged by the ram of the press, a compression spring engaging the head, a washer engaging the opposite end of the spring, a retainer acting between the punch shoulder and the washer, and a stripper sleeve for acting between the workpiece and the retainer, whereby the position of the head on the punch provides a preload to maximize spring life, as well as to control the effective height of the assembly with respect to the ram. With this assembly, no special tooling is needed to assemble it. The retainer can be inverted to alter the retractive position of the punch shoulder. .Iadd.