The braking device of the present invention is equipped with a resistance element which acts so that, when the brake device is operated by pulling a brake lever to a set operating position where the wheel braking force produced by brake shoes reaches a certain set value, a discretely increased force resists operation of the brake lever so that further operation of said brake lever is inhibited until a pulling force which is greater than the resistance force is thereafter applied to the brake lever. A setting mechanism may be provided for setting the particular position of the brake lever at which the resistance discretely increases