Rudolph Valentino, film actor, was scratched and bruised at Lankershim, near here, today when he was dragged some distance by a galloping horse. The scene which Valentino was making for the screen required him to halt a running horse. He grabbed the animal by the bridle, but the horse, entering into the spirit of the act, kept going, bumping the actor along the road. Valentino must appear in Justice Court here Friday and stand trial on a speeding charge. Such was the response of Justice Joseph Marchetti yesterday to Valentino’s plea that he move his court temporarily to his studio. Valentino had declared that if he should have to leave the studio and go to court the wheels of production would stop and much money would be lost while the cameras waited for his reappearance.