Patents Assigned to Laclede Steel Company
  • Method of manufacturing springs, including the production of wire therefor
    Patent number: 4568394
    Abstract: The method of manufacturing coiled springs comprising forming steel rod by hot rolling, oil-tempering the rod as produced in the hot rolling operation, without drawing it, by passing it through an austenitizing step, an oil quenching step and a tempering step, cold-drawing the resultant oil-tempered rod into wire, and winding springs from the wire.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 4, 1986
    Assignee: Laclede Steel Company
    Inventor: Ralph M. Cassell
  • Method of manufacturing springs, including the production of rod therefor
    Patent number: 4174981
    Abstract: The method of manufacturing coiled springs from hot-rolled steel rod (as distinguished from drawn wire) wherein round steel rod is formed by hot rolling with the gauge of the rod within a tolerance of .+-.0.010 inch and the rod not out of round more than a maximum of 0.015 inch, oil tempering the rod as produced in the hot rolling operation, without drawing it, by passing it through an austenitizing step, an oil quenching step and a tempering step, and winding springs from the oil tempered rod.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: November 20, 1979
    Assignee: Laclede Steel Company
    Inventor: Ralph M. Cassell