THREE:Platens as a rule run back at twice the forward or cutting movement, and as the motion is uniform throughout each stroke, it requires to be stopped at the extremes by meeting some elastic or yielding resistance which, to use a steam phrase, "cushions" or absorbs the momentum, and starts the platen back for the return stroke.It was quiet enough in Churton Street. And again in Collin's Crescent, which was so near home that the long line of Lytton Avenue could be seen. But there again standing figures came out of the gloom and the car sped on.