Patents by Inventor John H. Woolner

John H. Woolner 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: 4273052
    Abstract: Apparatus for driving railroad spikes having at least one pair of hydraulic driving rams and associated spike holders and spike feeding arms. Each ram and its associated spike holder and spike feeding arm is suspended from an adjustable head supported in a mounting frame. Each head is individually movable in a first direction parallel to railroad track rails and in a second direction perpendicular to railroad track rails so that each ram and associated spike holder can be independently adjusted relative to a tie plate hole through which a spike is to be driven and both rams and associated spike holders are adjustable in unison in a first direction parallel to railroad track rails and in a second direction perpendicular to railroad track rails to spot the spikes over the holes in a tie plate through which the spikes are to be driven.
    Type: Grant
    Filed: March 24, 1978
    Date of Patent: June 16, 1981
    Assignee: Portec, Inc.
    Inventors: John H. Woolner, Emeric Gaslevic, Richard B. Doorley