Patents Assigned to The Jacobs Manufacturing Co.
  • Tool chest with retractable step
    Patent number: 4545628
    Abstract: A tool chest for mechanics tools which chest is movable on wheels and has a retractable step affording easy access to the topmost storage compartments when stepped upon by the tool chest user. The step is horizontally movable beneath the tool chest when not in use, and also is movable vertically so that it does not engage the floor when the tool chest is being moved.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: October 8, 1985
    Assignee: The Jacobs Manufacturing Co.
    Inventor: Clyde D. Richey
  • Keys for drill chucks
    Patent number: 4186933
    Abstract: A key for a drill chuck, the key including a geared head part connected to a separately formed handle part of machined, forged, cast or moulded form.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: February 5, 1980
    Assignee: The Jacobs Manufacturing Co., Ltd.
    Inventor: George C. Derbyshire
  • Hand tools
    Patent number: 3935889
    Abstract: A hand tool including a blade or tool part with a connected tang and a handle part with an aperture extending axially from one end for receiving the tang, a locking pin extending diametrically across the handle part and the tang being provided with a slot for the passage of said locking pin to a cross bore in the tang, the locking pin being rotatable or axially moveable to engage it with said cross bore.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: February 3, 1976
    Assignee: The Jacobs Manufacturing Co., Ltd.
    Inventor: George Cecil Derbyshire
  • Drill chuck and method of assembly
    Patent number: 3934891
    Abstract: A drill chuck having a rotatable nut member for advancing and retracting converging jaws, and provided with passages for feeding lubricant to the groove in which the nut is rotatable. And a method of assembling the components of the chuck in dry condition and subsequently feeding lubricant through the passages to the groove in which the nut is rotatably mounted.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: January 27, 1976
    Assignee: The Jacobs Manufacturing Co., Ltd.
    Inventor: George C. Derbyshire
  • Drill chuck
    Patent number: D259855
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: July 14, 1981
    Assignee: The Jacobs Manufacturing Co., Ltd.
    Inventor: George C. Derbyshire