Descriptive Catalogue of Kodascope Library Motion Pictures (1932)

79 CLASS 3 — Popular Science, Useful Arts and Natural History REEL NO. TITLE PRODUCER 3010 Code FACA Our Mechanical Servant Bray Illustrating by animated drawings the theory and practice of the operation of the modern hydraulic elevator in office buildings, so clearly that even a child can understand. Very few people have an idea of just how the hydraulic passenger elevator is operated. 371 feet standard length — on same reel with 7012, Bobby Bumps Goes Fishing Rental $1.25 3011 Code FACE How the Telephone Talks Bray Sound waves are shown to be very similar to water waves. A simple animated drawing shows how these sound waves are converted into electric waves, or impulses, by the vibration of the diaphragm through the medium of carbon granules. The flow of electricity and the physical results are clearly shown. Then at the receiver end, the conversion of the electric waves again into sound waves through an electro magnet in turn operating another disc is clearly shown. A very interesting and instructive description of one of our best known devices. 374 feet standard length — on same reel with 7013, Bobby Bumps, Detective Rental $1.25 3012 Code FACI The Science of Weather Prediction Bray Weather reports nowadays are as common as newspapers and the little notice at the top of the front sheet is not very prepossessing, but to put accurate information through every morning keeps the weather man on the job night and day. He must understand much complicated apparatus and be able to read various meters. From many widely located sources he gathers the atmospheric data by which he is able to forecast the next day's weather. 342 feet standard length — on same reel with 7014, Surprise Rental $1.25 3013 Code FACO Turning Kansas Upside-down Bray One generally thinks of coal as coming from a deep mine, but in Kansas it is so near the surface that it is "mined" with steamshovels. Eighty huge shovels in a line thirty miles long are busy digging coal on the farm lands. Dynamite is also used — the holes for the blasts being bored with an ordinary auger. We see the pumps working to keep the coal pits free of water and watch the loading of cars, which are picked up bodily by huge hoisting engines and put on tracks so the coal can be hauled to the grading mills. 244 feet standard length — on same reel with 7015, Mechanical Doll Rental $1.25 3015 Code FACAR Charting the Skies Bray Most of our weather reports are forecasted from the results gathered from observations in the upper air, secured by means of large box kites. Such a station in Nevada is shown together with the instrument called a meteorgraph, which is sent up in the kite and records air velocity, temperature, humidity, etc., For maximum enjoyment