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NOVEMBUK 20, 11)25.
Supplement to THE CINEMA
NEWS AND PBOPEBTY GAZETTE.
«5
the mechanical side. The same remark applies also to the elimination of any fire travelling beyond one picture. With this point I will not, however, deal at the moment.
Yours faithfully,
L. Connor. 127, West Nile Street, Glasgow, November 14, 1925.
FACTS ABOUT FIBRE.
By NORMAN STANGLIFFE.
Fibre, without doubt, plays an important part in electrical and wireless work, no matter whether in sheet, rod or tube, or, in fact, any special shape.
It is an insulating substance, and withstands the action of oil very well, and is very useful where friction services are to be dealt with when a material is needed that will stand to transmit power and at the same time to have a smooth and true surface enough to slip under great pressure without cutting metal surfaces. Here it is a rival to bronze.
Fibre is also putting in the shade hard rubber for handles, ferrules, &c. For this work alone it is as light as rubber, and has the great advantage of not being brittle. This alone proves that it can be handled by unskilled labour and put into use in places where rubber could not be used.
Manufacturers of fibre can supply any special shape to suit requirements. Gears are also made of fibre,
and practically there is very little difference in raw hide or cloth gears, as all these three are very noiseless and have good wearing qualities.
Fibre can be worked at a very high speed in lathes, milling machines, and other machine tools, omitting the drilling machine, as, through lack of space round the drill, the work is apt to become burned with heat. This being due to the nature of the material, fibre, so-called hard or red fibre, is made from sheets of cloth, chemically treated and subjected to a very great pressure, which almost unites the sheets, but not quite, hence drilling operations become difficult, as the lack of complete unity makes it rather inclined to split along the lines of the seams. Fibre as a whole is a great asset to all electrical and wireless work.
COLOURED LIGHT IN THE CINEMA
The cheerful effect of coloured lighting in the cinema is discussed in an attractive four-page leaflet received from the General Electric Company, Limited, on the use of Osram colour-sprayed, gas-filled lamps for decorative lighting. In stating that these lamps can be used for the interior and exterior illumination and decoration of the cinema, the leaflet says : " They have been adopted by many large cinemas throughout the country with very pleasing effect." Seven standard colours of Osram colour-sprayed lamps include white, red, orange, yellow, green, blue, and flame tint.