Patents Assigned to James Sumrall
  • Tire changing machine
    Patent number: 4059140
    Abstract: A T-shaped frame including a cross member and a telescopic standard is provided with a tire-supporting cradle on one of the standard portions adjacent an upstanding tire-engaging post. A hydraulic cylinder with a bead-engaging tool on its outer free end is pivotally connected to the other telescopic frame member. Adjustment means is provided for angularly positioning the cylinder relative to the horizontal for the tool to engage the bead of a tire. Casters are provided at the corners of the T-shape frame.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: November 22, 1977
    Assignee: James Sumrall
    Inventor: Jarvis D. Sedgwick