American cinematographer (Apr 1929)

April, 1929 AMERICAN CINEMATOGRAPHER Twenty three The Gall Patent Continued from Page 19 across the optical axis of said lens, means to move a sensitized film across said axis and in a plane parallel to the plane of motion of said negative, said last-named means being adapted and arranged to move the film in a direction either the same as, or opposite to, that of said negative, at the will of the operator. 3. In a motion picture printing machine, a lens, means to move a motion picture negative intermittently across the optical axis of said lens, means to move a sensitized film in a plane parallel to that of said negative and in unison therewith, said sensitized film moving means being mounted so as to be moved around the axis of said lens. 4. In a motion picture printing machine, a lens, means to move a motion picture negative intei'mittently across the optical axis of said lens, means to move a sensitized film in a plane parallel to that of said nega- tive and in unison therewith, said sensitized film moving means being mounted so as to be moved around the axis of said lens, a driving mechanism connecting said nega- tive-moving means and said sensitized film moving means constructed and arranged to maintain such connection, irrespective of the relative position of said means. 5. In a motion picture printing machine, a lens, means to support and move a sensitized film across the axis of said lens, and means by which said supporting and moving means may be located so as to move said film across said axis in any predetermined direction. 6. In a ’motion picture printing machine, a lens, means to move a sensitized film across the axis of said lens, means by which said moving means may be located so as to move said film across said axis in any prede- termined direction, a source of power, mechanism con- necting said source with said moving means, said mechanism being constructed and arranged so that said source is always connected to said moving means irre- spective of the position of the latter. 7. In a motion picture printing machine, a hollow trunnion and means for supporting and moving a film across the axis of said trunnion, said means being sup- ported by said trunnion and movable around said axis. 8. In a motion picture printing machine, a hollow trunnion, a lens in said trunnion having its axis in the axis of said trunnion, and means for supporting and moving a film across the axis of said trunnion, said means being supported by said trunnion and movable around said axis. 9. In a motion picture printing machine, a pair of parallel hollow trunnions having a common axis, a lens in one of said trunnions, means for supporting and moving a film across the axis of said trunnion, said means being supported by said trunnions and movable around said axis. 10. In a motion picture printing machine, a hollow trunnion, means for supporting and moving a film across the axis of said trunnion, said means being supported by said trunnion and movable around said axis, a mem- ber mounted to turn freely on said trunnion, means to drive said member and mechanism connecting said member with said film moving means. 12. In a motion picture printing machine, a base, a pair of parallel supports carried by said base, a light- tight box mounted to turn on said supports and means in said box to support and move a film. 2. In a motion picture printing machine, a base, a pair of parallel supports carried by said base, a light- tight box mounted to turn on said supports and means in said box to support and move a film, a source of power outside said box and mechanism to connect said ' source of power with said film moving means. 13. In a motion picture printing machine, a base, a pair of parallel supports carried by said base, one of said supports being hollow, a lens in said hollow sup- port having its axis in the axis of said support, a light- tight box mounted to turn on said supports and means in said box to support and move a film across the axis of said lens. 14. In a motion picture printing machine, a source of light, a lens, means for moving a negative motion picture film intermittently across the axis of said lens and between it and said source of light, means for supporting and moving a sensitized film intermittently in a plane parallel with the plane of said negative film and with said lens between it and said negative, a shutter located between said sensitized film and said lens and arranged to cut off the light from said sensitized film while the latter is moving, and supports for said sensi- tized film supporting and moving means, and said shut- ter, constructed and arranged so that said means and said shutter may be moved around the axis of said lens. 15. In a motion picture printing machine, a frame having an exposure opening therein, means to support and move a negative film intermittently past said open- ing, means to support and move a sensitized film past said opening in unison with said negative, a rotary shut- ter adapted and arranged to pass across said opening, and the exposure opening in said shutter while it is rotating, said mechanism being operable to so alter said exposure opening during any given speed of operation of the printing machine. 16. In a motion picture printing machine, a frame having an exposure opening, means for supporting and moving a negative film past said opening, means for supporting and moving a sensitized film past said opening in unison with said negative, a shutter adapted and arranged to move across said opening, and mechanism for automatically altering the exposure opening in said shutter during movement of the latter, said mechanism being operable to so alter said exposure opening during any given speed of operation of the printing machine, substantially as described. 17. In a m.otion picture machine, means for support- ing and moving a film across the path of the light from a source of light, a shutter adapted and arranged to move between the film and the source of light and to cut off the light from said film, and mechanism for auto- matically altering the exposure opening in said shutter during the movement of the latter, said mechanism being operable to so alter said exposure opening during any given speed of operation of the motion picture machine, substantially as described. 18. In a motion picture machine, means for support- ing and moving a film across the path of the light from a source of light, a rotary shutter disposed between said film and the source of light and adapted and arranged to cut off the light from said film, and mechanism for automatically 'altering the exposure opening in i;aid shutter while it is rotating, said mechanism being opera- ble to so alter said exposure opening during any given speed of operation of the motion picture machine, sub- stantially as described. 19. In a motion picture machine, means for support- ing and moving a film across the path of light from a source of light, a rotary shutter disposed between said film and the source of light and adapted and arranged to cut off the light from said film, and means for auto- matically varying, step by step, the exposure opening in said shutter while it is rotating, substantially as described. 20. In a motion picture machine, means for support- ing and moving a film across the path of the light from a source of light, a rotary shutter disposed between said film and the source of light and adapted and arranged to cut off the light from said film, and means for automatic- ally increasing, step by step, the exposure opening in said shutter while it is rotating, substantially as de- scribed. 21. In a motion picture machine, means for support- ing and moving a film across the path of light from a source of light, a rotary shutter disposed between said film and the source of light and adapted and arranged to cut off the light from said film, and means for automatic- ally increasing, step by step, the exposure opening in said shutter while it is rotating and for effecting the successive steps of increase in such exposure opening in successive rotations of the shutter respectively, substan- tially as described. Concluded on Page 27