The Optical Magic Lantern Journal (July 1900)

_ ‘The Optical Magic Lantern Journal and Photographic Enlarger. _ 85 narrow rod, which is also pivoted to the head atc. On looking at Fig. 4 (which, it should have been remarked before, is—with Fig. 5—a plan drawing) the reader will see that the order in which these parts are pivoted together is :— the left arm outermost, the right arm next, and the rod inside. It will be seen that another washer is needed to keep the right arm at the proper distance from the body. Before leaving this part, it must be noticed that at the point where the two arms are pivoted there is no connection whatever with the body or head, and also that the slots are | cut in the extremities of the arms to give the pin that connects them with the rod sufficient room to play. We come now to thelegs. Figs. 1 and 5 will have to be referred to here. pivoted to the body at p. It is also pivoted to the before-mentionéd rod at the same point as the rod sg is. Reference to Fig. 5 will show that the thigh is innermost, the rod J next, and the other, or top rod, outermost. The lower part of the leg is pivoted to the thigh simply at F. The letters in the two diagrams, Figs. 1 and 5, correspond with each | other, so that further description would be unnecessary. It may be pointed out, however, that 5, Fig. 1, is the pin represented by c in Fig. 3, and the tongue a, Fig. 1, is the same as A in Fig. 3. We come now to those working parts that are attached to the lower part of the framework of the slide. These, it will be noticed, fulfil two purposes. They actuate the parts of the clown (by means of the two rods), and also cause the movements of ‘the football. The diagrams that will be referred to are Figs. 1 and 2, the latter of which isa plan drawing of these working parts only. The rod 3 is connected with a metal link x, which is in turn connected with the rod m, passing through a groove in the framework. At the end of the rod mis a handle s, formed by twisting round the end. the link K at x, and also at the point vu, to the small wooden block y which is glued to the framework. As in the other cases a careful comparison of the two diagrams, Figs. 1 and 2, will be necessary to fully understand the method in which these parts are connected with each other, but if this is done there should be no difficulty in seeing the relation of the different parts, and how that relationship is to be accomplished. The thigh is , A link x is pivoted to | | the handles is pulled out far enough the nut 9' In continuing, the link x is connected with a long rod n, at the other end of which a thread Pp is worked, which will be referred to later on. This rod n passes through a hole in the guide plate o which is attached to the framework by means of two screws. A spiral spring 7 is fitted over the rod n, and | kept in position by means of a small nut Q screwed on the thread P. A long strip of perfectly clear celluloid pr, shaped as shown, and with its extreme end painted black to represent the football, is pivoted by means of the screw v to the block w, glued to the framework. At the end of the thread Pp is another nut Q’, and the distance from between this and the nut @ may be regulated. All the mechanical parts have now been described. It should be mentioned that a recess is cut in the side of the framework to receive the ball when it has been apparently kicked through ' the hoop. On the interior surface of the fixed glass is printed in black the clown holding up the hoop, and also, in brown, the ground, which serves partly to prevent any possibility of the movement of the strip of celluloid being detected when the slide is exhibited upon the screen. A black circular mask is fastened to the fixed glass as indicated by the dotted line in Fig. 1. When the bottom portion of the framework has been fitted on and the working parts thus protected, the slide is ready for exhibition in the optical lantern. Let us consider how it works. When the rod m is pulled out by means of the handle s, the links L and Kk and the rod 3 are all pulled down a trifle. The clown’s head ig thus thrown back, the arms are thrown outwards, and the thigh being pulled round causes the leg to be thrown out as in the action of kicking. It cannot be thrown too far, as H would come into contact with the projecting pin E, and prevent such a possibility. At the same instant as this is taking place, the rod wn is pulled along from left to right. If on the thread end of the rod n will come into contact with the overlapping end of celluloid, and cause it to be swivelled round, the ball thus‘apparently passing through the hoop. The parts are of course adjusted so that the ball begins to move in its flight just at the game moment as the‘clown’s foot reaches it. The appearance to the ball being kicked through the hoop is thus obtained.