Linear moving pattern for ellipsoidal type stage light

Apparatus for projecting a pattern from an endless pattern loop comprising:

• an ellipsoidal stage light having a light at a first focus and narrow iris slot at a second focus;
• a drive roller and a motor for rotating the drive roller;
• a return roller;
• a housing, the housing having a narrowed end for protruding into the instrument at the iris slot and holding the return roller on one side of the light, the housing further having a broad end for mounting outside of the ellipsoidal stage light for holding the drive roller and motor at the other side of the light;
• a motor clamp mounted to the housing for holding the drive roller and motor to the housing;
• and,
• a pattern clamp mounted to the housing to tension and dimension the endless pattern loop threaded about the drive roller and return roller for extension into and out of the narrow iris slot about the housing.

A process from projecting from an ellipsoidal stage light an image having a linear moving pattern comprising the steps of:

• providing a drive roller and a motor for rotating the drive roller;
• providing a return roller;
• providing a housing, the housing having a narrowed end for protruding into the instrument at the iris slot and holding the return roller on one side of the light, the housing further having a broad end for mounting outside of the ellipsoidal stage light for holding the drive roller and motor at the other side of the light;
• mounting a motor clamp to the housing for holding the drive roller and motor to the housing;
• mounting a pattern clamp to the housing to tension and dimension the endless pattern loop for extension into and out of the narrow iris slot about the housing;
• providing an endless pattern loop having a pattern for projection by the ellipsoidal stage light;
• threading the endless pattern loop to the return roller with the return roller mounted to the narrow end of the housing;
• and,
• threading the drive roller threaded to the endless pattern loop,
• placing the drive roller and motor into the housing at the broad end, and
• locking the drive roller into place with the motor clamp;
• placing the housing at the narrow end into an iris slot of an ellipsoidal stage light;
• tensioning and dimensioning the endless pattern loop threaded about the drive roller and return roller for extension into and out of the narrow iris slot about the housing;
• and,
• rotating the drive roller from the motor to rotate the dimensioned and tensioned endless loop pattern in the iris slot of the ellipsoidal stage light for projection of an image having linear motion.