Educational film guide ()

621.8-621.89 EDUCATIONAL FILM GUIDE REMOVING DEFECTIVE RIVETS. Castle 1944 15min sd $26.43 621.8 sh-c-tr Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Shows how an inspector marks defective rivets, how to center a drill in a rivethead, how to drill the heads of flush-type and brazier head rivets, how to draw a drill back on center, and how to remove the shank and head after drilling SIMPLE MACHINES. EBF 1942 llmin sd (General science ser) $45, rent $2.50 621.8 Jh-sh-c-ad Guide Collaborator: H. Horton Sheldon, New York University Shows the basic features of the lever, the inclined plane, the wedge, the pulley and the screw. Applications of these devices to modern complex machines are demonstrated. The evolution of the machine and its part in contemporary civilization is indicated also "Animated drawings clarify abstract mechanical principles. Good sound and commentator. "Well organized and presented." California TURNING POINT. Castle 22min sd loan 621.8 Jh-sh-tr-ad Here is the story of man's fight against friction. Without the development of antifriction bearings, automobiles, our household appliances, the railroads to bring these products to us and even the machinery to roll the steel for them would be impractical dreams. The film also shows the manufacture of rollers 621.83 Gears HOBBING A HELICAL GEAR, TWO CUTS— NONDIFFERENTIAL METHOD. Castle 1945 17min sd $29.29 621.83 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Setting up the change gears; how to adjust the swivel head to cut on the helix angle; how to set up the machine for the rough cut; and how to realign hob and gear teeth after disturbing the lead HOBBING A SPUR GEAR— PART I: SETTING UP THE CHANGE GEARS. Castle 1945 15min sd $27.15 621.83 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Shows the factors governing the selection of the hob; how to select change-gear combinations for speed, feed, and index; how to identify the correct gears; how to mount the change gears; how to adjust for backlash; and how the change-gear strains are interrelated HOBBING A SPUR GEAR— PART II: SETTING UP AND HOBBING THE WORK. Castle 24min sd $36.59 621.83 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 How to select and mount the hob; how to set the swivel head angle; how to choose and mount the fixture; how to lead the gear blanks; how to set up for depth of trial cut; and how to adjust for full depth of cut HOBBING A SQUARE TOOTH SPLINE SHAFT. Castle 1945 17min sd $28.58 621.83 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Changing hob arbors; how to centralize the hob with the centering gage; how to mount the centertype fixture and the top adjustable center; how to use a driving dog In mounting the spline shaft blank; how to set up for the trial cut; and how to take full depth of cut HOBBING A WORM GEAR— INFEED METHOD. Castle 1945 18mln sd $30.01 621.83 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Shows the angle at which to set the swivel head; how to calculate and adjust the height of the hob arbor; how to engage horizontal feed; how to centralize the hob; and how to cut to a center distance PLAIN INDEXING AND CUTTING A SPUR GEAR. Castle 1942 26min sd $38.02 621.83 sh-c-tr-ad Guide Produced by the U.S. Office of Education. Accompanying fllmstrip $1 Offers an explanation and definition of diametral pitch, tmd the parts of a gear tooth; detailed explanation of the use of the dividing head for spacing teeth and the operations of a milling machine in the cutting of a spur gear PRINCIPLES OF GEARING— AN INTRODUCTION. Castle 18min sd $30.74 621.83 sh-c-tr Guide Produced by the U.S. Office of Education. Accompanying fllmstrip $1 Explains and ditferentiates friction gears and toothed gears; explains the law of gearing 621.84 Valves VALVES: THEIR MANUFACTURE AND USES. USBurMines 1930 45mln si loan 621.84 sh-c-tr-ad Sponsored by the Crane Co. Shows the making of brass, iron and steel valves, and their use with steam, water, petroleum, in automobiles, trains, airplanes, for fire flghting, etc. 621.89 Lubrication BASIC PRINCIPLES OF LUBRICATING. GM 1945 25min sd loan 621.89 Jh-sh-c-tr-ad Faulty lubrication was responsible In many cases for the vehicle breakdowns in the army Hundreds of parts in a vehicle need the protecting film of oil Animated diagrams show how the outer layers of tiny oil globules adhere to the metal surfaces. Lubricating oils differ in viscosity and the choice is determined by weather and temperature factors Explains the following important functions of lubrication: to reduce friction in order to increase efficiency; to cool moving parts and internal surfaces; to keep power in the cylinder; and, to prevent contamination and deterioration of engine parts LUBRICATION. USBurMines 1942 SOmin sd loan 621.89 Jh-sh-c-tr-ad Sponsored by the Sinclair Refining Co. Describes theory of friction and practical application of lubricants to various mechanical elements connected with our everyday life. Displays range of petroleum lubricants and their use in six main classes: (1) spindle oils to lubricate machinery with high speed but little pressure; (2) internal-combustion engine oils for different types of engines; (3) gear oils for the many types and shapes of gears; (4) steamcylinder lubricants to withstand high temperatures; (5) greases for heavy-duty, slowmoving machines; (6) machine-tool lubricants used in cutting metals. Closing scenes show how lubrication reduces work, wear and waste and conserves materials 446