Patents by Inventor Jack Maltby

Jack Maltby 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: 4122740
    Abstract: A rolling blade shear has a stationary blade and a movable blade which latter is mounted and driven to roll over the stationary blade. The movable blade is carried by a pair of opposed toggle mechanisms which are pivoted to a supporting frame and to the movable blade and which are coupled together so as to swing together. Guide means on the frame guide one end of the movable blade along a fixed path. The coupled toggle mechanisms are driven by hydraulic piston and cylinder units connected between the frame and the mechanisms.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: October 31, 1978
    Assignee: Davy-Loewy Limited
    Inventor: Jack Maltby
  • Patent number: 3964282
    Abstract: A rolling mill stand having work rolls and back-up rolls extending from respective arms which are pivotally mounted, and including a pair of load cells recessed into one side of each work roll arm and a loading device recessed into the opposite side of each work roll arm. The load cells are spaced at different distances from the stock pass line, and the loading device is disposed on the centre line passing between the load cells. The arrangement is used for tension measurement in the rolled stock and minimizes errors arising from twisting of the work roll arms.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: June 22, 1976
    Assignees: British Steel Corporation, The British Iron and Steel Research Association
    Inventors: Dennis Stubbs, Jack Maltby, Roy Ronald Oxlade
  • Patent number: 3946587
    Abstract: A rolling mill stand for hot or cold rolling rod and flats has a C-shaped housing and a bolt connecting the protruding ends of the housing. The work rolls are mounted in cantilever fashion and are carried in chocks which are restrained by the housing. The chocks are pivoted to the housing about pivot pins, the axes of which are parallel to the axes of the work rolls and are displaced from the plane through the roll axes. Pivoting of the chocks about the pivot pins in order to vary the separation of the work rolls does not affect the shape of the roll gap.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: March 30, 1976
    Assignee: Davy-Loewy Ltd.
    Inventor: Jack Maltby