Patents by Inventor Harold James Gilbert, deceased

Harold James Gilbert, deceased 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).

  • Multi spindle lathes
    Patent number: 4008633
    Abstract: A multi spindle lathe with a drum carrying a number of rotatable spindles each having a chuck and chuck operating means each spindle having an associated proximity switch probe which senses whether the chuck is open or closed and permits progression to the next part of the operating cycle of the lathe if the chuck has correctly operated.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: February 22, 1977
    Assignee: Wickman Machine Tool Sales Limited
    Inventors: Harold James Gilbert, deceased, Edmund Alexander McConnell
  • Multi spindle lathes
    Patent number: 4008635
    Abstract: A multi spindle lathe having a drum with a number of rotatable work spindles therein, the spindles having respective chucks thereon, and each spindle carrying a gapped ring adjacent to which is a proximity switch probe with control means which ensures that the chuck cannot be operated unless the spindle speed is below a predetermined low value, which is determined by the signal pulse frequency from said switch.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: February 22, 1977
    Assignee: Wickman Machine Tool Sales Limited
    Inventors: Harold James Gilbert, deceased, Edmund Alexander McConnell