Abstract: A flat piece of material such as of plastic or cardboard has bent-over tabs along the top edge thereof. An aperture is formed in the material directly below each tab, a clip member being fitted through each of these apertures being used to removably attach the tabs to the brim of a golfing cap or visor, the material being bent around to conform to the curvature of the brim. A viewing aperture is formed in the material spaced substantially equally from the side edges thereof, and at a distance down from the top edge which corresponds approximately to the eye level of the wearer of a cap with the device attached thereto. The device provides a golfer with a peephole to the ball which is helpful in training him to keep his eye on the ball throughout his swing.

Abstract: The head of a golf driver club is formed from a one-piece casting having a face plate portion, a sole plate portion and toe and heel wall portions with a concavity being formed between these portions. A cap which is preferably of wood or plastic encloses this concavity to form an air chamber within the club head. This cap is fitted onto the casting portion by means of a lip which fits under an edge of the casting, the cap being fastened to the sole plate.