55. This contractor shall furnish and install the complete mechanism for the automatic footlight shutters.
56. The mechanism shall consist of a series of frames for holding the footlights in the proper position, and arranged to be raised or lowered by means of a suitable system of linkages installed beneath the footlight trough. The same linkage system shall be used to lower the portion of floor directly back of the footlights to clear the path of the light. The floor section shall be mounted to a structural steel framework hinged to the stationary part of the stage floor. A rigid covering shall he provided over the footlight frames to form a continuous floor when the shutters ere closed.
57. Tilting Device:
An auxiliary mechanism shall be provided to tilt the footlights into a position which will illuminate the upper part of the stage when desired.
58. Each mechanism shall be actuated by means of an electric motor driving through a suitable system of quiet operating gearing. All shafting shall revolve in roller bearing pillow blocks.
59. Push button control shall be used, with the operating station mounted on the stage as directed. Automatic stops at the various operating positions shall be effected by means of geared limit switches.