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.
Century Introduces New 10-hole Pull Down Projector
35 and 70mm
Centurv Projector Corporation recentlj announced a new 70mm. 10hole pull down projector.
The Spacearium Projector, designed and manufactured bv Centur\. is
one of the most unique projector ever used for the public exhibition of
motion pictures. I he projector »a> made for Cinerama Inc. and is used
' A*t i i ri A II ■ ■ ......
,N ,^
/ s.
ZJ^m^-^^S^
These illustrations compare the average small theatre screen (top) and the required adaptation for Wonderama (bottom).
Optical handling of the dual film used in Wonderama is represented in this illustration.
in the Cinerama-kLM Royal Dutch Airlines Exhibit at the New York World's Fair.
ReportedU the largest motion picture projector ever built, the Spacearium uses 70mm film with a 10 perforation frame (1.870" twice normal size I . Film speed is twice normal — or 225 feet per minute at 21 frames. As used at the Worlds Fair, it projects 18 frames per second, equal to a film speed of L68.75 feet pel minute.
Six-channel Sound
The projected is complete with a 6-channel magnetic sound reproducer employing the ahead) proven Hydraulic Flutter suppressor, as modified from a Century standard 70mm sound reproducer. \ 6-channel \m|m\ magnetic pick-up head is used.
Tin film sprockets, including the intermittent sprocket, an double the size of standard 70mm sprockets, [he webbed back starwheel is the same a> is used in standard 70-35mm
projectors.
The new Centur] direct drive is used with a pol\ "V" bell from the
V4 hp. motor to the main drive shaft which rotates it 1 I lo UPM in synchronism with the double rear shutters.
The water-cooled film trap and the film gate are designed to handle the larger (circular) aperture plate. A unique feature added to the intermittent movement is a film stabilizer operating independently, but in conjunction with the "fixed film trap and izate shoes.
Loop Stabilizers
At this high film speed and great!) enlarged film loops, special mechanical film loop stabilizers are employed, thereby minimizing film loop noise.
The gear train has been generally patterned after the design of the Century 70-35mm projector. Changes in the gear train have been made, where necessarv. to accommodate larger sprockets and facilitate higher film speeds.
The higher film speeds I feet per minute I require a special motor driven take-up. This take-up is essentially the same as is used on the Century standard 70mm projectors, except that it is separately motor driven. The take-up motor can be turned on prior to starting the proPlease turn to Page 17
■ J _m1
' -,y— — — *
1
:m^WI
International Projectionist May 1964