Abstract: A golf swing training apparatus having a saddle for attachment to the hips of a golfer, a first assembly to guide the saddle laterally during the golf swing, a second assembly to promote opposite hip rotations during the golfer's backswing and follow-through, respectively, and a third assembly to position the golfer's shoulders throughout the swing. The first assembly includes a traveler mounted to move laterally on a straight track which is rotatably mounted on a pivotable connecting assembly which is supported by a base. The second assembly is a spring and hinge assembly having a first hinge around which the saddle rotates during the backswing and a second hinge around which the saddle rotates during the follow-through. The third assembly includes a vest worn by the golfer, a rigid back plate, a vertically extensible support assembly rotatably mounted on the saddle and tension means which apply rotational force to the support assembly during the backswing.

Abstract: An earth drilling method and apparatus utilizes a unique drill string rotary drive and support arrangement which provides for the utilization of longer drill strings than could heretofore be accommodated on prior art drill masts of equal height.