in a joint structure between each limb and a handle riser of a knock - down type archery bow employing a plug - socket engagement , a two position support is formed by a pair of separate supporter pieces fixed to the face side of the socket , one supporter piece located closer to the socket mouth forming the first support for enabling change in angular position of the limb with respect to the handle riser , and the other supporter piece located closer to the socket bottom forming the second support unmoved by any change in the first support . the absence of holes in the socket walls assures a strong construction without the increase in weight , and the adjustment by the first support causes no disturbance on the originally designed balance of force over the entire construction .