Patents by Inventor Robert E. Gratton

Robert E. Gratton 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: 5129215
    Abstract: A hay bale wrapping machine having a platform having a forward end, opposite forward corners, opposite sides and a rearward end. Support wheels are located on opposite sides of the platform. A bale wrapping unit is mounted on the platform. A pair of arms are pivotally secured to the forward end of the platform and are connected to a power unit for pivoting the arms from a forwardly extending position to an upwardly and rearwardly position to permit a bale of hay secured between the arms to be lifted over the front end of the platform for operative positioning on the bale wrapping unit. A hydraulic unit connected to the arms permits them to be moved towards and away from each other for grasping and releasing, respectively, a bale. A tongue unit is pivotally secured to the side of the platform, and can be hydraulically moved to an angular position with respect to the direction of travel of the machine.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: July 14, 1992
    Inventor: Robert E. Gratton
  • Patent number: 5105607
    Abstract: A wrap holder having closable jaws is positioned on a rotatable bale platform beneath a wrap dispenser on a stationary support frame. Rotation of the platform and/or bale will cause the bale to be wrapped. Upon completion of the wrapping the platform is raised allowing the wrap holder to reengage the wrap between the bale and the wrap dispenser. Continued tilting of the platform causes the bale to roll off onto the ground severing the wrap while leaving it attached to the wrap holder. The platform is lowered and is now ready for receiving another bale and the wrapping process is repeated without the operator leaving the prime mover.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: April 21, 1992
    Inventor: Robert E. Gratton