In the District Court of the United States, for the Eastern District of Pennsylvania, the United States of America, petitioner, vs. Motion Picture Patents Company, et al., defendants (1914)

588,916 position and follow the succeeding picture. As the return movement of the reflector does not assist the correct representation of the pictures, it should be made as quickly as pos 5 sible, and, if desired, the ra.ys of light from the pictures m ght be intercepted foi that instant, so that there would be no reflection except during the forward movement of the reflector. io A plurality of reflecto -s may be arranged to successively reflect the succeeding pictures, one form of which is shown in Fig. i. In the drawings, which illustrate a r achine having but owe reflector 5, we have shown it 15 secured upon 0lfotslS and provided with an arm 10, the free end of which engages with a series of pins '7, forming shoulders upon the wheel or roiled 2. The parts are so arrang«4 that one picture will pass a given point orbe 20 exposed to view'foreach time that theieflector is oscillated or moved forward. The return movement of the reflectoi may be accomplished by any suitable mechanism — as, for instance, by a weight or spring 20— which 25 will draw the arm 10 back into its initial position to be engaged by the succeeding pin on the wheel. Instead of t ho arms and pins above referred to the reflector and wheel or strip may be con 30 nected and caused to move synchronously in any desired manner, the only requisite being that the return movement of the mirror be quick, so as to come as near making a continuous or unbroken reflection as possible. 35 The size of the reflector may be made to correspond with the size of the pictures, and the apertures or slots through the side of the casing, through which the pictures are observed, may be made accordingly. * 40 When the parts are inclosed in a box, as shown, with the reflector below the strip, it is necessary to provide some means for illuminating the pictures, which can be done by an ordinary reflector 22, arranged in such man 45 ner as to reflect the light passing through an aperture 23 in the side of the box upon the picture, or an ordinary lamp or incandescent or other light can be arranged within the box bo as to illuminate the picture either by re 50 flection or transparently— that is, the light transmitted through the transparency; but when the parts are arranged in an open framework or the reflector is located above the strip and the top of the box removed the means for 55 illumination may be dispensed with. In using our machine one of the sides of the box is preferably made removable, so that' the strip or objects to be used may be placed upon the wheel under the spring and the 60 brake properly adjusted. The removed portions are then replaced, the wheel rotated, and the objects are seen in the reflector. If desired, the pictures may be placed directly upon the periphery of the wheel, in 65 which case the pins 10, strippers, and spring may be dispensed with. Lenses 24 may also be placed between the roflector and the pic tures or the eye, whereby the apparent size of the picture may be changed, and by using two vis al openings and propeily arranged pic 70 lures or objects the usual stereoscopic effects can be produced In addition to the foregoing adaptations and use our invention may be applied and used in the observation of any moving objects — 75 as, for instance, machine^. In this construction it is only necessary that the reflector be moved at such angular rate of speed with reference to that of the moving object to be observed as will cause the imago of the object 80 t;o stand still when seen in the re/lector. This may be accompl *shed in any suitable manner, as by connecting the reflector with the moving object, as shown in Fig. 5, in which 25 indicates the reflector, 26 a walking-beam of 85 an engine, (the object to be observed,) and 27 and 2S the means for connecting the two together. In this construction when the beam is. moving in one direction the refleoXor is moved such a distance and at such a fate -of 90 speed that the reflection of the virtual image of the portion of the beam being observed will appear at the same place during the entire length of the stroke, and as soon as the beam starts in 1 he opposite direction the movement 95 of the reflector is changed accordingly and moved at such a rate of speed as will cause the 1^ ige to still remain stationary In view of the wide use and scope to which our invention may be applied we Avish it to be 100 understood t :at we do not limit ourselves to the constriv tion herein shown or described, but include all such changes and alterations as will come within the scope and spirit of our invention. ™S Having thus described our invention, we claim — 1. The herein-described method of directing light-rays, consisting in holding each of the rays of light from a series of moving ob 1 rp jects stationary through a given point, substantially as set forth. 2. The herein-described method of forming an impression upon the eye, consisting in causing the rays of light from aperies jof mov 1 15 ing objects,each to be held stationary through a given point, substantially as set forth. 3. In combination with a movable object, a movable reflector connected therewith, whereby the relativ e positions of the one to4he other 1 20 are changed so that the rays of light from the object will each he held stationary by the reflector through a given point, substantially as set forth. 4. In a kinetoscope, the combination, with 125 a series of movable objects, of a movable reflector, and means for changing tbe relative positions of the objects and the reflector to each other, so that the rays of light from each succeeding object will each be held stationary 130 by the reflector through a given point, substantially as set forth. 5. In a kinetoscope, the combination, with a series of movable pictures, of a movable re