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.
January, 1929
The Motion Picture Projectionist
27
Another view of the Mechau projector
16. Timepiece.
17. Speed indicator. 21. Large film gate. 23. Film tension shoe.
55. Sector mirror.
56. Gate adjusting nob.
57. Oil Gauge.
60. Film track (adjustable) .
35. Safety catch.
34. Self-locker, shutting the light off at a speed of less than 8 pictures per second.
62. Mirror frame.
38. Upper sprockets.
37. Upper magazine.
65. Oil filter.
66. Oil reservoir. 70. Lower sprocket.
minds of projectionists the operation of this machine.
Turning around a main axis are eight visible mirrors. These mirrors, while revolving, are also undulating, or rocking. To this end they are connected to a curved ring on which they are guided. The movement of these mirrors must of necessity co-ordinate with the movement of the film to gain a satisfactory result, as the smallest difference produces a hazy picture and poor definition.
Recently several improvements have been effected in the optical system of the Mechau projector. To improve the picture and to reduce the light losses, the rays passing the aperture are moving with the film picture by means of the rotating and rocking mirrors.
Other improvements include the development of an oiling system whereby the oiling of the mechanism is accomplished from one central reservoir (shown in the illustration). Also, the ever-present danger of fire has bzeen reduced to a minimum. A long, air-tight film channel will smother any ignition of the film at the very start. An automatic fire shutter will cut the light rays at a speed of less than 40 feet per minute.
Another special advantage of this type of
projector is its great changeability of speed without in the least affecting the steadiness and sharpness of the picture. The speed control is similar to the one employed on the Simplex projector (American). Any type of reflector or high intensity lamp can be used on the Mechau.
Application to Sound
It should be mentioned that this continuous projector is especially adapted for the projection of sound film. Those acquainted with the projection of sound films know that its success depends on the easy and indistinguishable movement of the film, which must, of course, be in perfect condition. To keep a film in this perfect condition is one of the important functions of any good projector.
The Mechau projector will run a film a great number of times without damaging it even to the smallest extent. For this reason alone a projector of continuousmovement type possesses a distinct advantage over the mechanical-intermittent type. The difference in the quality of picture obtained by a continuous projector and that projected by a mechanical-intermittent type is most pronounced, and many a casual observer has noticed the soothing effect of a
^=2=-^
KLIEGL SPOTLIGHT
No. 1700
A N exceptionally powerful, long t/1. distance, spotlight, floodlight* and effect projector — of greatly improved design; complete — providing in a single unit everything required for white lighting, color lighting, framing, fading and spotlight attachments; having all controls centralized, and other accommodations to facilitate convenient, speedy and easy operation; 125 amperes; projects any distance up to 150 feet; gives anything required from a 4-ft. spot to a 50-ft. flood — and all colors desired. Write for full details,
OTHER KLIEGL SPECIALTIES
Footlights
Borderlights
Exit Signs
Aisle Lights
Dimmers
Spotlights
Floodlights
Sciopticons
Color Wheels
Color Frames
Color Rolls
Color Boxes
Music Stands
Connectors
Plugging Boxes
Floor Pockets
Scenic Effects Shutters
Color Mediums Color Caps
Lamp Coloring.
Terminal Lugs Resistances Stage Cable
m
Universal Electric Stage Lighting Co., inc. 321 West 50th Street
NEW YORK, N.Y.
picture without knowing that the results were obtained with a Mechau.
The superiority of the continuous-type projector is, however, immediately apparent to those who understand the principle of the "optical dissolve."
Renewal Notice !
Subscription renewal notices are now being mailed out. Watch for yours and return it promptly, so you will not miss any issues.