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.
MANAGERS AND PROJECTIONISTS 725
to get a good idea of exactly what it is you wish to accomplish, place framing lever C-ll, P.2, in central position, and by means of knob K-120-A, P.2, set sliding block S-323-A, P.2, in the center of its travel, which is midway between the two stop pins in its lower track. Next loosen the set' screws which hold the shutter hub to the shaft just enough so you can pull the shutter around by exerting a little force.
Next place a finger of one hand on the intermittent sprocket and turn the flywheel IN THE DIRECTION IT NORMALLY RUNS until a point is reached where the intermittent sprocket just barely begins to move. Move the flywdieel back and forth until you determine exactly the point where it starts the sprocket. Now hold the flywheel absolutely stationary and revolve the shutter on its shaft in the direction it normally runs, until the edge of the master is about threefourths across the lens, which should be right.
Now turn the flywheel VERY SLOWLY in the direction it runs, until the point 13 exactly reached where the intermittent sprocket ceases to move. If the other edge of the master blade now covers as much of the lens as the other edge did, then the shutter is correctly set. If not, then equalize the two edges as to lens covering, and see instructions for adjusting revolving shutter to local conditions under General Instruction No. 22. When the job is done and a slight travel ghost shows up or down, but only one way, this may be eliminated by slightly altering shutter adjustment by means of knob K-120-A, P.2.
The shutter setting device is operated by knob K-120-A, P.2. It is for the purpose of adjusting the revolving shutter to correct any slight error in timing. The shutter must, however, be first correctly set as per the foregoing instructions.
INSTRUCTION NO. 37.— ADJUSTING GATE TENSION.— See General Instruction No. 9. Correct tension is that pressure which will cause film to begin to overshoot (picture to move up on the screen) when a speed ten revolutions of the crank shaft in excess of your highest projection speed is reached. Anything in excess of this is very bad for both the film and the projector mechanism. To change tension on the Simplex it is necessary to bend the spring which supplies pressure to the tension shoes. This is a curved flat spring, the upper end of which is seen protruding through a slot in the upper side of the lens barrel extension which attaches to the gate or door. It is attached to the door by means of two screws, the removal of which allows it to be lifted out. A magnetized screw-driver should be used for this job. A