His inventive mind and creative genius developed the first Knot Tying machine ( No . 237, 966 ), the low wheeled trotting sulky ( No . 494, 113 ), the Elliott addressing machine ( No . 707, 961 ), the pneumatic tire ( No . 487, 874 ), the ball bearing ( No . 483, 836 ) and last but not least the unequal turning of the front wheels or steering knuckle ( i . e .-kingpin ) that would turn out to be a critical element in the success of the automobile.
