Educational film catalog (1936)

EDUCATIONAL FILM CATALOG 621.4-621.9 New voice highways— Continued "How telephone cable is made and used. Contrasts are drawn between the old method of stringing city telephone wires on poles and the modern manner m which the huge lead-covered speech-carriers are now run underground." Texas 621.4 Gas and oil engines. Solar engines Energy from sunlight. iSmin 16-si-$24 1930 Eastman 621.4 "Explains the principle of a solar engine — pictures the energy of falling water, sunlight, and wind power — shows how energy from sunlight stimulates plant growth, and is stored for future use in the form of wood and coal." Producer Jh-sh Guide Four-stroke cycle gas engine. 15min 16- si-$24 1929 Eastman 621.4 "Animated drawings show the four strokes of each cycle; intake, compression, power, and exhaust; the fuel system of a gas engine is traced; the principle of the spark coil is illustrated and the air-cooled system is compared with circulatory water- cooling." Weaver jh-sh-c Guide Power within—construction, operation, and care of the internal-combustion engine. 45min 16-si-loan 35-si-nf-loan prior 1927 Bur. of mines 621.4 "Uses of power produced by internal- combustion engine in lighting homes, pumping water, plowing fields, and operat- ing automobiles, boats, and airplanes. Ex- plains in detail by animated drawings name, location, and operation of each part of motor. Reel 2 presents principal fea- tures of automobile engine by animated drawings, with rod or arrows pointing to each part as it appears; shows how firing takes place in cylinders; illustrates chang- ing of gears; explains how power is trans- mitted by propeller shaft to differential and axle shaft to rear wheels; and gives views of burned-out bearings, scored cylinder walls, and worn gears due to improper lubrication, telling how this difficulty may be avoided. Reel 3 shows purpose of car- buretor (atomizing and mixing fuel with air before it enters cylinder); improper firing and waste of gasoline due to fouled spark plugs; knocking caused by accumu- lation of carbon; and proper use of choke. Waste of gasoline and of power is shown by animated drawings." Producer Story of the gasoline motor. 4Smin 16-si- loan 35-si-nf-loan prior 1927 Bur. of mines 621.4 Made in cooperation with the Continental motors corporation "Reel 1 depicts by animated drawings action of gasoline in cylinder and of each working part; casting and machining of each cylinder block; and tests for accu- racy. Reel 2 shows machining of crank case; forging and machining of crank shaft; machining of pistons and connecting rods; testing of these parts; and their op- eration in motor. Reel 3 illustrates work- ing of inlet and exhaust valves; timing of action; making of cam shaft, inlet, and ex- haust manifold; distribution of lubricating oil to motor; and final test for smooth running." Producer Jh-sh-c 621.5 Pneumatic machinery. Refrigera- tion Compressed air. ISmin 16-si-$24 1928 Eastman 621.5 "The principles underlying the com- pression of air, and its practical applica- tions to the Bessemer converter, railway air brakes, air driven tools, and the fire engine." Producer Jh-sh-c Guide Refrigeration. ISmin 16-si-$24 1929 East- man 621.5 "Natural ice, cutting ice, packing ice. Commercial refrigeration, making solid carbon dioxide, making artificial ice ex- plained by scenes and animations, refrig- erator cars. Household refrigeration, ice refrigerator, electric refrigerators and gas refrigerators explained by animation." Ohio Jh-sh-c Guide 621.8 Principles of mechanism Valves, their manufacture and uses. 45min 16-si-loan 35-si-nf-loan prior 1927 Bur. of mines 621.8 Made in cooperation with the Crane com- pany "Close-up views and cross sections of angle, globe, gate, and check valves. Com- plete story of the manufacture of brass valves. Shows the making of iron and steel valves, including forging poppet, but- terfly, check, and gate valves; 27 foot but- terfly valve, the largest made." Illinois "[Useful in] physics and general science [Classes]" Am. museum of nat. hist. 621.87 Elevators Riding skyward. 32min 16-si-loan 1936 Otis 621.87 A comprehensive history of the develop- ment of the Otis elevators. Incidentally there is shown a history of transportation trade 621.9 Machine tools Engine lathe and its operation. 7R 16-si- apply 35-si-nf-apply Soc. for visual educ. 621.9 "Its care and operation—the complete assembly of lathe, showing principal parts —preparing the lathe for operation (oiling the different parts, starting, stopping, re- versing; countershaft operation; straight and cross belts, object of reverse, etc.)— machining a shaft on centers—care of the spindle—diagram of 12 of the most prac- tical lathe tools—thread cutting—machin- ing a pulley—machining a pair of lathe centers—full details of important lathe jobs, together with knurling the lathe, turning taper by setting over tailstock, and special manufacturing job on a lathe." Producer trade Guide Industrious diamonds. IR 16-si-apply 35- si-f-nf-loan Western electric 621.9 "Diamonds are used in dies which, in turn, are used in making copper wire. This film shows how diamonds are cut and mounted for use in this industry." Texas ti - silent; sd • sound; f - Inflammable; nf - safety; el - elementary; Jh ■ Junior high; sh - senior high; c - collego 43