Patents Assigned to Henry A. McAdams
  • Patent number: 4449879
    Abstract: A dry wall panel lift is provided in which a vertical support has spaced apart legs of about ceiling height and at least two crossbars, one at full height and one at worktable height.A work frame has a pivotal detachable connection at one end to one of the crossbars and legs of worktable height at the other end extending away from the work surface of the frame.A stiff leg is pivotally connected to the end of the work frame opposite the connection and is of length about equal ceiling height.A work stop extends across the work frame in the region remote from the connection. When one end of the work frame is lowered to slope downwardly from the connection, the stop will restrain a ceiling panel on the work frame preparatory to elevating the panel to ceiling height. The work frame can be connected to either of the bars for selectively functioning as a ceiling panel lift or for a worktable support.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: May 22, 1984
    Assignee: Henry A. McAdams
    Inventor: James E. Mercer