Patents by Inventor John H. Blanchfield

John H. Blanchfield 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: 5415087
    Abstract: A vehicle supports a first roller conveyor having stop members at opposite sides of the vehicle mounted for pivotal movement between the rollers of the first conveyor to assist in stacking ties on the first conveyor from either side of the vehicle. The first conveyor feeds stacks of ties into a horizontal compression means and a vertical compression and banding means for banding stacks of ties. A second roller conveyor feeds banded stacks of ties away from the banding means. Dump arms at opposite sides of the vehicle are mounted for pivotal movement between the rollers of the second conveyor to dump banded stacks of ties to either side of the vehicle. Hydraulic motors drive the conveyors, and a sensor is provided adjacent the second conveyor to sense the position of a stack of ties, the operation of the hydraulic motors being responsive to the sensor.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: May 16, 1995
    Assignee: Norfolk Southern Railway Co.
    Inventors: Gerard J. Sniffen, Jr., John H. Blanchfield, Kenneth D. Roberts, Randy L. Barnhardt
  • Patent number: 4457060
    Abstract: A rail anchor remover includes a wedge member affixed to a rail lifter for progressively moving an end of each rail anchor away from the rail web until it no longer grips the rail base and falls to the ground. The wedge is provided with a tailpiece having a bearing surface engaging an outer edge of the rail flange for stabilization of the wedge, and are undercut surface which slopes downwardly and inwardly from an outer side wall of the wedge and slopes at a progressively steeper angle toward the tailpiece.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: July 3, 1984
    Assignee: Southern Railway Company
    Inventors: Jack E. Parks, John H. Blanchfield