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The entire outfit may be erected or dismantled within a few minutes, and for transportation it is packed within a special case measuring 10' x 14" x 10". These dimensions are for the 8' x 6' size screen, but the Pylon can be supplied in whatever sizes are needed.
The control-panel includes switches for 2-way variable-speed curtain control, for the dimmers which work the light-banks, and for colour-control and pilot light. There is also a special 8-core cable connecting the unit to the panel. As an aid to good presentation designed specifically for the road-showman, the Pylon is probably without equal. Readers requiring further information on this and similar units are invited to write for an illustrated brochure to the Breckland Cine Service, 10 Bridgestreet, Thetford, Norfolk.
The Drum Loop Absorber
The advantages of the film loop for easy repetition of short instructional sequences have already been mentioned, but a retarding factor in its wider adoption has been the problem of handling a loop of any appreciable size. Loop absorbers are used to accommodate the free portion of the loop during projection, but so far the size of loops capable of being handled has been limited to a maximum of about 30' of film.
Educationists will therefore appreciate the Drum Film Loop Absorber newly designed by Sound Services Ltd., and now being marketed by that organisation. The following are the chief points of its design: —
1. A loop up to 70' long is fed from a magazine of only 6" in diameter, which is mounted on top of the projector in the place of the normal spool-arm. Another arm carrying a free-running guide-roller also takes the place of the normal take-up arm. (70' feet of film lasts for two minutes at sound-speed and three minutes at silent-speed — 16-mm.).
2. The changing of loops takes no longer than the time necessary for the normal threading of the projector.
3. There is actually less tension on the film than from the normal feed-spool.
4. No modification to the projector is necessary — it is supplied with a specially designed attachment for each type of pro
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