Abstract: An adjustment device for liquefied gas lighters is disclosed, which allows precise automated setting of maximum and minimum permitted flame heights during the assembly of lighters which have a rotatable valve adjustment member extending from a valve well in the lighter. Fixed stop means are provided on the lighter. An adjustment mechanism rotates with the valve adjustment member and after adjustment of the flame height, movable stop means are formed in the adjustment mechanism in positions chosen such that the movable stop means can abut the fixed stop means at positions of the adjustment mechanism corresponding to maximum and minimum flame height, respectively.

Abstract: A multi-material earthworking ripper tip having a leading nose portion comprised of a material having greater wear resistance and strength at elevated temperatures than the material which comprises the rearward shank supporting portion of the tip. In one embodiment, a bi-metallic nose portion is inertial welded to the shank support portion of the tip. In another embodiment powdered tungsten carbide is sintered in situ within a hollow bore of a steel nose portion. Alternately, a solid core of tungsten carbide could be soldered, brazed or press fitted within said hollow bore.