Patents by Inventor John B. Whitaker, Jr.

John B. Whitaker, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5201127
    Abstract: A ballast metering method and apparatus is disclosed which utilizes a rail mounted metering hopper having a set of forward discharge outlets for directing ballast laterally and downwardly beneath the rails under the pressure of a volume of ballast retained in the hopper. This volume is maintained at a continuously maintained level by selective addition of ballast to the hopper. The discharged ballast forms a pair of spaced apart windrows beneath the rails which is graded to a predetermined height by a sub-track grader blade associated with the hopper. A center discharge opening at the rear of the hopper allows ballast to be directed between the graded windrows. A pair of lateral chutes permit discharge of ballast outwardly of the rails.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: April 13, 1993
    Assignee: Keshaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 5127335
    Abstract: A points and crossing changer including an elongated frame having a plurality of extendible support members pivotally mounted thereon for horizontal movement about a vertical axis. Each support member includes a downwardly extendible telescoping shaft supported on a lower end by a tracked conveyor pivotally mounted thereon. Mounted to the frame is means for engaging selected sections of track subjacent frame wherein the frame and the selected section of track can be lifted by the telescopic shafts and propelled in an unlimited variety of horizontal directions by the tracked conveyors.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: July 7, 1992
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 5099766
    Abstract: A rotary dump wagon for handling ballast having a carriage with a first conveyor mounted thereon for conveying ballast the length of the carriage and a plurality of hollow drums supported by the carriage and engaging the first conveyor for rotational movement thereabout. Each drum has a plurality of elongated flights mounted to the inner surface thereof for lifting ballast to the first conveyor and at least one downwardly extendible plow blade suspended therein which selectively contacts the upper surface of the first conveyor thereby diverting ballast traveling thereon to the lower portion of the drum. A second conveyor is pivotally mounted to the carriage subjacent the discharge end of the first conveyor for horizontal movement about a vertical axis and extends upwardly and forwardly beyond the forward end of the carriage and above the first conveyor.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: March 31, 1992
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4967847
    Abstract: An articulated ballast cleaning system utilizes a pair of ballast cleaners each dedicated to cleaning only a portion of the ballast bed of a railroad track, such that one cleans the peripheral ballast while the other cleans the center ballast. Spoil or waste ballast is conveyed forwardly along the apparatus for disposal, while cleaned ballast is conveyed rearwardly for replacement aft of an undercutter device. Fresh ballast may be conveyed forwardly along the apparatus to supplement the cleaned ballast.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: November 6, 1990
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4890557
    Abstract: An attachment for railroad track maintenance equipment utilizes a parallelogram linkage to position a vibrating skid on the surface of the interstitial ballast intermediate railroad crossties to loosen such ballast for subsequent removal by an undercutter device which is a part of the track maintenance equipment.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: January 2, 1990
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4882860
    Abstract: A railroad undercutter economizes both weight and space requirements through the use of a single continuous chain which carries ballast from beneath a railroad track to a track supported conveyor with the chain entering beneath and exiting from beneath the track on the same side and turning through a vertical arc of approximately 130.degree. to move above the track.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: November 28, 1989
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4850123
    Abstract: An apparatus for removing ballast utilizes eccentrically mounted disk-like undercutters to remove ballast from a position adjacent the track shoulder inwardly to a position underneath the ends of the crossties. The undercutters project inwardly from their mounting position on the lower ends of vertically disposed columns which overhang each side of a supporting carriage. The vertically disposed columns attach to horizontal sliders mounted transversely relative to the carriage. Linear actuators act to position the undercutters for ballast removal.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: July 25, 1989
    Assignee: Kershaw Manufacturing Co., Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4848426
    Abstract: Track maintenance apparatus for use in railroad track maintenance utilizes a forward cribber unit to remove ballast from between the crossties and a rear adzer unit to smoothen any irregularities in the crosstie surface during a track re-laying operation. A single worker can perform both the cribbing and adzing tasks without dismounting from the apparatus.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: July 18, 1989
    Assignee: Kershaw Manufacturing Co., Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4843967
    Abstract: A combined tamper and compaction apparatus for use on a railroad track leveling machine utilizes hollow tamping tools which are inserted in loose ballast on either side of a cross tie. The tamping tools are vibrated to "fluidize" the ballast and plungers mounted within the tamping tools force the ballast therein downwardly and outwardly beneath the ties. Thereafter the tamping tools with plungers extended are raised and lowered to compact the ballast.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 4, 1989
    Assignee: Kershaw Manufacturing Company, Ind.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4705115
    Abstract: A method and apparatus for reconditioning ballast along a railroad track utilizes lateral excavators to excavate the ballast adjacent the track ahead of an undercutter which excavates beneath the track. The ballast from adjacent the track is discharged below the track without processing, while the ballast taken from beneath the track is processed by a cleaning screen to recover reuseable ballast which is discharged outwardly of the center of the track.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: November 10, 1987
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4674208
    Abstract: An apparatus for removing ballast utilizes a ditcher wheel to remove ballast from along the side of a railroad track. An undercutter is pivotally mounted to the frame of the ditcher wheel rearwardly thereof and is also pivotal about a vertical axis such that the undercutter may be placed beneath the track while supported by the ditcher wheel. A portion of the undercutter is aligned parallel to the track proximal and rearwardly of the ditcher wheel and serves to urge the ballast removed by the undercutter into the path of the ditcher wheel for removal.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: June 23, 1987
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: 4563826
    Abstract: A method and apparatus for removing ballast from beneath railroad tracks utilizes a horizontal undercutter disposed beneath the track to remove the ballast therefrom into a trench excavated by a cooperatively mounted trencher wheel. A horizontally disposed conveyor is located in the trench rearwardly of and adjacent the trench wheel to receive the ballast from the undercutter and to transport the ballast to the trencher wheel for removal thereby.
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: January 14, 1986
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventor: John B. Whitaker, Jr.
  • Patent number: D269425
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: June 21, 1983
    Inventor: John B. Whitaker, Jr.
  • Patent number: D305898
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: February 6, 1990
    Assignee: Kershaw Manufacturing Company, Inc.
    Inventors: John B. Whitaker, Jr., Rama N. Bail