Patents by Inventor Norman Yearsley

Norman Yearsley 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).

  • Clutch protection device
    Patent number: 4290514
    Abstract: A clutch or brake protection device for use with a clutch having relatively axially movable components, the device including an element mounted on one of the components and situated adjacent to the other of the components, the position of the element being such that it will contact the said other component when wear in the clutch or brake in excess of a predetermined amount has taken place, to complete electrical connection and provide a signal indicating the condition of the clutch or brake.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: September 22, 1981
    Assignee: Wickman Machine Tool Sales Limited
    Inventors: Edmund A. McConnell, Norman Yearsley, Alec G. Blockley
  • Controls for multi spindle lathes
    Patent number: 4100825
    Abstract: A multi spindle automatic lathe having electrically actuated units on respective spindles in an indexable drum, and having a rotary electrical switch with multiple poles, the switch having a rotatable part indexable with the drum and carrying contacts connected by wiring to the respective units on the spindles, the switch also having a part fixed to the base of the lathe, said fixed part having contacts connected to wiring to control circuits.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: July 18, 1978
    Assignee: Wickman Machine Tool Sales Limited
    Inventors: Edmund Alexander McConnell, Norman Yearsley, Alec Gordon Blockley
  • Collet actuating mechanisms
    Patent number: 4049282
    Abstract: A collet actuating mechanism for a longitudinally slidable collet tube for a lathe in which toggles are actuated by a slidable sleeve, the toggles acting against a pair of rings separated by a cam which is controlled through a lost motion connection from the actuating sleeve, movement of the cam taking up slack in the mechanism so that the same gripping force is applied to workpieces of varying diameters.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: September 20, 1977
    Assignee: Wickman Machine Tool Sales Limited
    Inventor: Norman Yearsley
  • Bar feed mechanism for lathes
    Patent number: 4046036
    Abstract: A bar feed mechanism for a lathe comprising a pair of bar feed devices spaced lengthwise of the bar feed path, and switches adjacent the devices respectively to sense the presence or absence of bar, the bar feed devices being alternatively operable to feed the bar through the lathe and being arranged only to feed the bar if a section of bar spaced from an end thereof is situated in a position to be fed.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: September 6, 1977
    Assignee: Wickman Machine Tool Sales Limited
    Inventor: Norman Yearsley