Patents Assigned to Kearney
  • Patent number: 4368632
    Abstract: Apparatus for reducing the cross sectional area of a wire comprises stabilizing means arranged to receive the wire and to limit extrusion thereof in a direction transverse to its length and movable projecting means for engaging the wire while restrained by the stabilizing means so as to effect a deformation of the wire and a concomitant reduction of its cross sectional area.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: January 18, 1983
    Assignee: Kearney-National Inc.
    Inventors: Robert N. Thrash, W. Ralph Crooks
  • Patent number: 4365315
    Abstract: Multilingual computer-specified control messages are communicated to an operator in an operator-selected language by the combination of a message writer and a language changer. The language changer contains a set of message storage tables, each containing a set of control messages written in a particular language, and a set of message address tables, each message address table referencing a computer-generated message code indicative of a specific condition to a respective one of the control messages in an associated message location table. In accordance with an operator command indicative of a desired control message language, the language changer supplies the message writer with the corresponding message storage table and message address table.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: December 21, 1982
    Assignee: Kearney & Trecker Corporation
    Inventor: Donald J. Jamnik
  • Patent number: 4358888
    Abstract: A vertical spindle numerically controlled machining center includes a stationary bed or base on which a workpiece holding table is slidably mounted for movement along a first axis. A vertically extending upright or column, having a vertically reciprocal spindlehead slidably mounted thereon, is slidably mounted on the bed for movement along a second axis perpendicular to the first axis so that the spindlehead overlies a portion of the table. Within the upright is a recess adjacent to the bed. A tool storage magazine is located in the recess and is slidably mounted on the bed for movement through the recess along an axis parallel to the second axis. During a tool change cycle, the toolholder then held in the spindle is returned to the tool storage magazine by first moving the spindlehead to the ready position and then moving the tool storage drum toward the spindlehead to engage the tool then held in the spindle.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: November 16, 1982
    Assignee: Kearney & Trecker Corporation
    Inventors: Frank Zankl, Charles B. Sipek, Alvin L. Cleek
  • Patent number: 4356609
    Abstract: A spindle keylock for stopping and locking the spindle of a machine tool at a predetermined angular orientation to align the machine tool spindle key with the toolholder key to facilitate tool exchange includes a collar fastened about the spindle for co-joint rotation therewith. The collar has a helically cammed exterior surface into which an axially extending slot or channel is inscribed. A cam follower, pivotally mounted to the machine tool spindlehead so as to lie within a plane passing through the spindle axis which is at a predetermined angular orientation with respect to a reference plane passing through the spindle axis in alignment with the spindle key, is rotatable about an axis perpendicular to the axis of the spindle for engaging with the cammed collar surface.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: November 2, 1982
    Assignee: Kearney & Trecker Corporation
    Inventor: Kenneth A. Wollermann
  • Patent number: 4334363
    Abstract: Apparatus for setting cutting tool length on numerically controlled machine tools includes a base having a leg extending perpendicularly therefrom. A rod is fastened to the base parallel to the leg. Overlying the end of the rod distal from the base is a cap which is reciprocal along the axis of the rod and which is biased away from the base by a spring interposed between the rod and the cap. A dial indicator gauge is fastened to the rod to abut the cap for indicating the displacement of the cap along the rod relative to the base. A setting block is pivotally mounted to the leg a known distance from the base and is rotatable about the axis of the leg for urging the cap against the spring so that the distance between the cap and the base corresponds to the known distance between the setting block and the base, to facilitate zeroing of the dial indicator gauge.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: June 15, 1982
    Assignee: Kearney & Trecker Corporation
    Inventors: Noel J. Stegemeyer, Vernon W. Naker
  • Patent number: 4329770
    Abstract: An automatic tool changer for a machine tool having a rotary toolhead with cross-feed slide includes a tilt unit having a tool socket which is pivotal between a first position, parallel to the axis of a machine tool storage magazine to permit loading or unloading of a machine tool carrier into the tool socket from the tool storage magazine by a transfer arm, and a second position parallel to the axis of the rotary toolhead. A tool changer arm, having tool grippers at opposite ends, moves along and rotates about an axis parallel to the rotary toolhead to exchange the tool carrier in the tool socket of the tilt unit with the tool carrier in the rotary toolhead, thereby permitting a new machining operation to be performed by the machine tool as well as storage of the machine tool carrier previously held in the rotary toolhead.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: May 18, 1982
    Assignee: Kearney & Trecker Corporation
    Inventor: Ervin J. Kielma
  • Patent number: 4326184
    Abstract: An electric cutout includes a fuseholder in which a fusible element is mounted, a conducting element pivotally mounted to the lower end of the fuseholder and having a pair of trunnions disposed within a pair of spaced jaws on which a pair of guide surfaces are respectively mounted for cooperation with complementary guiding surfaces of arcuate configuration on the conducting element so that rotation of the fuseholder and conducting element about the trunnions may be effected in such manner that the trunnions are securely held against the bight portions of the jaws thereby to prevent rocking action of the fuseholder during closing movement thereof, an ejector latching element pivotally mounted on the conducting element and arranged to eject the fusible element upon rupture thereof and also arranged to engage a part of the fuseholder so as to prevent relative movement between the conducting element and the fuseholder, a U-shaped contact fixed in position adjacent the jaws and arranged to engage opposite surfaces
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: April 20, 1982
    Assignee: Kearney-National Inc.
    Inventor: Robert E. Murdock
  • Patent number: 4322706
    Abstract: A fuse striker affords a visual or other indication of an operated condition of an associated fuse and is mounted within the fuse and comprises a housing structure coaxially arranged within the fuse with an end of the housing in contact with an end of the fuse, closure structure for the opposite end of the striker housing and comprising mating half sections with a longitudinal groove formed in at least one complementary surface through which an elongated high resistance ignition element extends and which is in shunt with the fusible elements of the fuse so as to contact with pyrotechnic material interposed between the closure means and a cup like piston element having an outwardly flared lip portion whereby ignition of the pyrotechnic element drives the piston toward the opposite end of the housing so as to thrust a striker pin mounted therein through the fuse cap so as to afford a visual indication of the operated condition of the fuse, the pyrotechnic material being ignited upon rupture of the fusible eleme
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: March 30, 1982
    Assignee: Kearney-National, Inc.
    Inventor: Robert N. Thrash
  • Patent number: 4320374
    Abstract: The invention involves new high voltage current limiting fuses employing composite metal fuse elements. One metal of the composite is aluminum which is of high conductivity and high melting point while the other is cadmium which is of low melting point, so that melting of the low melting point metal occurs at any and all locations along the element when its temperature reaches the said low melting point. The resulting composite exhibits properties that are not the mean of the metals employed and has a reversible resistance characteristic thus facilitating the design of the fuse for low current fault interruption.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: March 16, 1982
    Assignee: Kearney-National (Canada) Limited
    Inventors: Vojislav Narancic, Milenko Braunovic
  • Patent number: 4306350
    Abstract: A combined tool storage and tool change arrangement for use with a machine tool of the type which includes a power driven rotatable spindle having a socket which receives a tool shank of a predetermined size. The tool storage arrangement comprises a main tool storage magazine with a plurality of tool receiving sockets sized to respectively receive a tool having a shank of said predetermined size. Means is provided for moving the main tool storage magazine whereby to present a predetermined tool receiving socket and the tool therein to a first tool transfer point. An auxiliary tool storage magazine is provided for receiving and storing a plurality of tools having shanks of a different size than said predetermined size. The auxiliary tool storage magazine has a shank of said predetermined size whereby the auxiliary tool storage magazine may be stored in a socket of the main tool storage magazine.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: December 22, 1981
    Assignee: Kearney & Trecker Corporation
    Inventors: Ervin J. Kielma, Frank E. Dailey
  • Patent number: 4302646
    Abstract: An electric switch of the snap-action type includes a pair of relatively movable contacts, an operating linkage interconnected with a movable one of the contacts for imparting operating movement thereto, a hollow tubular rotatable member interconnected with the operating linkage and operable to impart switch operating movement thereto, a latching part secured to the rotatable member and engageable with abutment means so as to secure the rotatable member against rotation, spring means in the form of a torsion bar disposed within the rotatable member and effective to impart rotation thereto upon disengagement of the latching part from the abutment means, movable motive means in the form of a rotatable tube interconnected with the torsion bar for imparting twisting moment thereto together with latch releasing means mounted on and movable with the movable motive means for engaging the latching part and for moving such part out of engagement with the associated fixed abutment means after a predetermined degree of
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: November 24, 1981
    Assignee: Kearney-National Inc.
    Inventors: Anthony Osborne, Kenneth E. Hanke
  • Patent number: 4300086
    Abstract: The voltage and frequency of an A.C. excitation signal applied to the stator windings of an A.C. induction motor are varied in proportion to the amplitude of current flowing in the stator windings. The stator current flow is sensed by a feedback resistor in series with the inverter which generates the A.C. excitation signal for the stator windings. The voltage drop aross the feedback resistor is summed with a VELOCITY COMMAND voltage which indicates the desired speed of the motor and the summed voltage controls the frequency and the amplitude of the A.C. excitation voltage in a constant volts per hertz manner. The stator current feedback holds the motor speed constant in spite of variations in the load on the motor.
    Type: Grant
    Filed: March 28, 1979
    Date of Patent: November 10, 1981
    Assignee: Kearney & Trecker Corporation
    Inventors: Michael R. Cesarz, Richard E. Stobbe
  • Patent number: 4292577
    Abstract: A tachometer is coupled to the rotor of an A.C. motor and generates an output voltage proportional to the rotor's speed. A VELOCITY COMMAND voltage is generated having an amplitude which specifies a desired rotor speed. The tachometer voltage is subtracted from the VELOCITY COMMAND voltage to produce a VELOCITY ERROR voltage. The output of a D.C. power source is chopped at a fixed frequency and variable pulse width, the pulse width being proportional at any time to the amplitude of the VELOCITY ERROR voltage. The chopped D.C. voltage is filtered to provide a variable D.C. voltage having an amplitude which is proportional to the amplitude of the VELOCITY ERROR voltage. The variable D.C. voltage is applied to an inverter which changes it into an A.C. voltage. The A.C. voltage is applied to the stator windings of the motor to drive the rotor thereof. The frequency of the A.C. voltage is variable and is proportional, at rotor speeds above 150 RPM, to the amplitude of the velocity command voltage.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: September 29, 1981
    Assignee: Kearney & Trecker Corporation
    Inventors: Michael R. Cesarz, Richard E. Stobbe
  • Patent number: 4288909
    Abstract: An automatic tool changer for transferring single tools and/or multiple spindle toolheads between a tool storage magazine and a horizontal spindle of a machine tool. A plurality of single tools and/or toolheads are stored in the tool storage magazine with their shanks in a vertical position. A first tool change arm transfers a selected tool or toolhead from the storage magazine to a tilt unit which tilts the shank of the tool or toolhead by 90.degree. from a vertical to a horizontal position parallel with the axis of the spindle. A second tool change arm removes the tools or toolheads from the tilt unit and spindle simultaneously, interchanges them, and inserts the interchanged tools or toolheads into the spindle and tilt unit. The tilt unit then tilts by 90.degree. back to the vertical position, and the first tool change arm returns the tool or toolhead in the tilt unit back to the tool storage magazine.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: September 15, 1981
    Assignee: Kearney & Trecker Corporation
    Inventors: Ervin J. Kielma, Albin J. Schabowski, John T. Currer
  • Patent number: 4277197
    Abstract: A telescoping tool includes a plurality of telescoping tubes interconnected by coupling means each of which comprises an exteriorly threaded sleeve secured to one end of an outer telescoping tube and having an inner outwardly tapered surface a part of which is of the configuration of a truncated cone, a tubular wedge having an outer surface of complementary configuration to said part of the inner surface of said sleeve together with an outwardly projecting coupling element preferably in the form of an exterior flange together with a cap sleeve having internal threads and which is threadedly related with the exterior surface of the sleeve and arranged when tightened to force the tubular wedge into the sleeve and toward the adjacent end of the outer tube so as to grip frictionally the exterior surface of an inner telescoping tube and thereby to secure the telescoping tubes together in frictional relationship, an inner recess or groove being formed interiorly of the cap sleeve and adjacent its cap portion for re
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: July 7, 1981
    Assignee: Kearney-National, Inc.
    Inventor: Allen H. Bingham
  • Patent number: 4272216
    Abstract: The control valve for a hydrostatic bearing on a machine tool slide is opened when motion is commanded along the corresponding machine tool axis to eliminate sticking at the start of motion. The valve is closed when the velocity of motion exceeds a predetermined level and is opened again when the velocity drops below the predetermined value to eliminate sticking at the end of motion. The valve is closed again when the machine tool slide arrives at its commanded position.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: June 9, 1981
    Assignee: Kearney & Trecker Corporation
    Inventor: John G. Osburn
  • Patent number: 4266120
    Abstract: A numerically controlled machining center has a tool magazine, automatic tool changer, workpiece shuttle, and a workpiece magazine which holds enough workpieces for operation by the machining center for an entire shift of approximately eight hours. The numerical controls are programmed to perform predetermined machining operations on each workpiece, in turn, and to replace each finished workpiece with a fresh workpiece at the end of each machining program. A proximity switch is mounted on the machining center for checking tools to detect broken or incorrect tools. The tools are positioned adjacent to the proximity switch and are rotated while the output of the proximity switch is counted for one complete rotation of the tool to determine the number of radially extending teeth on the tool. If the tool has too few or too many teeth, thus indicating a broken or incorrect tool, it is replaced by another tool of the same type.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: May 5, 1981
    Assignee: Kearney & Trecker Corporation
    Inventor: Richard Johnstone
  • Patent number: D263497
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: March 23, 1982
    Assignee: Ralph Kearney & Son, Inc.
    Inventor: Ralph M. Kearney, III
  • Patent number: RE30975
    Abstract: A probe is mounted on the nose of a toolholder which fits into the spindle of a numerically controlled machine tool. An oscillator is mounted within the toolholder and is powered by a battery within the toolholder. The output of the oscillator is coupled to a primary coil on the toolholder which is inductively coupled to a ringshaped secondary coil on the spindlehead of the machine tool. Switches within the toolholder are wired to the oscillator to cause it to shift frequency when the probe stylus makes contact with a workpiece when moving along any one of the X, Y or Z axes. The ringshaped secondary coil is coupled to the machine tool's NC circuits to indicate when the probe makes contact with the workpiece.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: June 22, 1982
    Assignee: Kearney & Trecker Corporation
    Inventors: Richard E. Stobbe, Richard Jounstone
  • Patent number: RE31153
    Abstract: A method and apparatus for transferring digital data between a mass memory and a random access memory. The mass memory has a plurality of memory loops, each having a plurality of memory cells, and a read/write device which either outputs data from the memory cells or inputs data to the memory cells. Each memory cell is identified by an address that specifies its place in the loop sequence starting from a reference cell. A loop position counter is set at zero when the reference cell of the selected memory loop is at the read/write device. The loop position counter is advanced by one count each time the next memory cell in the sequence is moved into operative relationship with the read/write device. Transfer of data between the mass memory and the random access memory is accomplished without any delay under the control of a random access memory address counter which is synchronized with the loop position counter.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: February 15, 1983
    Assignee: Kearney & Trecker Corporation
    Inventor: Richard W. Caddell