A railway frog has a pair of wing rails with converging and diverging portions. Change amounts involving less than one dollar can be either credited to or debited from a monetary value stored on a smart chip in the transaction card by placing the transaction card into a card reader that reads a magnetic swipe strip associated with the smart chip. A switching plate 15 is attached to a rear end part of the cutter base 3, while a switcher 16 is provided on the outer surface side of the switching plate 15. The bio-active substance can comprise a steroid or can perform a function of reducing the resting neuron potential of neurons within the cochlea. The gas delivery system may include a gas outlet coupled to a wall of the patient room and line connecting the gas outlet to the manifold. The middle axle is rotatably driven by a chain drive transferring rotational power from the rear drive axle.