121. This Contractor shall furnish and install
magnascope frame for a three (3) position picture size. Size of picture to be electrically controlled
automatically by push buttons.
122. The frame shall
be built of steel and the overall size of the frame shall be for the full width
of the stage setting and approximately forty (40'0") feet high and the
inside frame shall be as directed. The
frame shall be made of one and three-quarter inch by one and three-quarter inch
by three-sixteenth inch (1-3/4" x 1-3/4" x 3/16") angles with
diagonal members to from a truss not less than three (3'0") feet across
the entire top of the frame and one (1'0") foot deep on the bottom and one
foot six inches (1'6") wide at the sides of the inner frame. The frame to have bronze sleeve cables guides
at sides for one-quarter (1/4") inch seven-strand guide wire which shall
be kept taut by one-half (1/2") turnbuckles.
124. All around the
inner frame there shall be one-quarter (1/4") inch drop forged hooks about
six (6") inches on centers to receive lacings of sheet.
125. For the
magnascope effect there shall be two (2) three-position machines mounted on the
frame - one for the vertical masking and the other for the two (2) side
maskings.
126. This Contractor
shall provide the battens and necessary rigging for the vertical masking, the
draw tracks, the edging frames and necessary endless line rigging for the side
maskings and the edge frames for the bottom masking.
127. This Contractor
shall also furnish and install the black velour maskings required to cover the
entire frame.
128. This Contractor
shall furnish motors, push button stations but all other electrical equipment
required for this installation shall be by OTHERS.
129. The picture
sheet shall be furnished and installed by OTHERS.
130. The entire
magnascope frame shall be hung from one of the ten electric counterweight sets
previously specified. This Contractor
shall furnish sufficient grey iron counterweights to equally balance the entire
installations.