Rotatable socket for a halogen lamp

摘要

A rotatable socket for a halogen-lamp. The socket includes a porcelain base having two insert grooves at its bottom and an H-shaped upright post standing on the bottom. A plus and minus contact members respectively positioned in two opposite recessed sides of the H-shaped upright post. The top end of the plus contact member rests on a protruding lug on the top center of the H-shaped upright post. The top end of the minus contact member rests on the top of the right side wing of the H-shaped post. A mica plate is fitted on the H-shaped post and a metal threaded sleeve surrounds the H-shaped post and is fixed with it by rivets, permitting the top end of the plus contact member to protrude out in order to function as a plus terminal and an upper rim of the threaded sleeve presses the top section of the minus contact member to function as a minus terminal.