Patents by Inventor Harold James Gilbert

Harold James Gilbert 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
  • Spindle drives for multi spindle lathes
    Patent number: 3991453
    Abstract: A spindle drive for an eight spindle lathe comprising a single input gear disposed at the center of the circle of the eight spindles, two gears meshing with the single input gear, each of these two gears engaging with pairs of further gears which are arranged to drive the work spindles.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: November 16, 1976
    Assignee: Wickman Machine Tool Sales Limited
    Inventor: Harold James Gilbert
  • Drive mechanisms for lathe spindles
    Patent number: 3981056
    Abstract: A drive mechanism for producing angular movement of at least one work spindle of a multi or single spindle lathe comprising an electrical stepping motor arranged to drive the spindle through gearing and a one way clutch, to allow the spindle to be angularly orientated for carrying out cross drilling or other operations on workpieces held in the work sindle.
    Type: Grant
    Filed: June 27, 1974
    Date of Patent: September 21, 1976
    Assignee: Wickman Machine Tool Sales Limited
    Inventors: Harold James Gilbert, Edmund Alexander McConnell