We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
unless the screen can be moved far enough back on the stage to come within the operating range of the projector optical system.
Mounting the projector back in the balcony will probably require some theater constructional changes.
Several ideas for mounting the projector have been proposed for stadiumtype theaters, but none have been tried in installations as of this writing.
Installation of Projection Booth Rack Equipment (Fig. 9). The booth equipment consists of two racks 63 in. high which are fastened together with conduit nipples and interconnected electrically through the top conduit nipple. These are similar to sound equipment racks and have conduit knockouts at the top of each rack.
It is desirable to mount the racks so
that they are at a right angle to the front wall of the booth and adjacent to an observation port so that the screen can be observed when operating the controls.
A voltage-regulator transformer mounted at some convenient location in the booth or adjacent to the booth, the main power switches, pilot lights and fuse box comprise the balance of the PT-100 System Booth Equipment.
Booth space requirements in a few cases presented the only problem encountered in the installation of the rack equipment. In these instances space was made available by rearrangement of booth equipment.
Installation of the High-Voltage Supply Unit. Some problems have been encountered in the installation of the highvoltage supply unit.
Fig. 8. Projector with horizontal leg mounting showing access to barrel
from top.
350
March 1951 Journal of the SMPTE Vol. 56