Educational film guide ()

671-671W EDUCATIONAL FILM GUIDE MOLDING A VALVE BODY — Continued Shows use of a split pattern and multipart dry sand core; how to gate a mold for rapid, uniform distribution of clean metal; how to locate a core and seal the core prints MOLDING ON A JOLT ROLL-OVER PATTERN DRAW MACHINE. Castle 23min sd $35.16 671 tr Guide Produced by the U.S. Office of Education. Accompanying fllmstrip ?1 Shows the principles of the jolt roll-over pattern draw machine; how to All the drag and jolt it; how to draw the pattern; set the drag and cope pattern plates on master mold boards; and finish and close the mold MOLDING ON A JOLT SQUEEZE MACHINE. Castle 1946 lOmin sd $20.74 671 tr Guide Produced by the U.S. Office of Education. Accompanying fllmstrip $1 Shows the principles of the jolt squeeze molding machine; how to roll the mold; fill the cope and apply pressboard; squeeze the mold; and draw the pattern, finish and close the mold • MOLDING PART HAVING A VERTICAL CORE. Castle 1945 19min sd $31.44 671 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Identifying the parts of a pattern which indicate how cores are to be placed; how to mold the drag and cope halves; how to mold a gate and riser instead of cutting them; how and why a pouring basin is made; how to draw a pattern with a "molder's touch"; how to »fent a mold so as to permit the escape of core gases; and how to locate a vertical core in a mold MOLDING WITH A GATED PATTERN. Castle 1945 llmin sd $21.44 671 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Shows what a gated pattern is and why it is u.sed; how a match or follow board may simplify making a parting; how facing sand is prepared and used; and how and why some patterns are rapped through the cope MOLDING WITH A LOOSE PATTERN. (BENCH) Castle 1945 21min $36.59 671 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Identifymg and using common bench molder's tools; how molding sand is prepared; how to face a pattern; how to ram and vent a mold; how to roil a drag; how to cut a sprue, runner, gates, and riser; how to swab, rap, and draw a pattern; and, by animation, what Lalies place inside a mold during pouring MOLDING WITH A SPLIT PATTERN. Castle 1945 19min sd $30.74 671 sh-tr-ad Guide Produced by the U.S. Office of Education. Accompanying fllmstrip $1 Why split patterns are used; how ramming affects the permeability of sand in a mold; how to mold the drag and cope; reinforce a mold with nails; and how to patch a mold PREPARING A CUPOLA FOR CHARGING. Castle 1946 21min sd $32.87 671 tr Guide Produced by U.S. Office of Education Accompanying fllmstrip $1 Explains how to recognize the end of a heat; the procedures for dropping bottom; and the procedures for preparing a cupola for its next heat SOLDERING AND SMALL ASSEMBLY OPERATIONS. lowa.StU 1939 12min si rent $1 671 sh-c-tr-ad A detail picture of these operations as used in industrial engineering SOLDERING— HAND SOLDERING. AmFlm Registry lOmin sd rent $2 671 tr Explains the theory of soldering and shows how to prepare soldering irons and torches; how to clean and prepare the work; how to fasten the joints; how^ to solder wire and lug joints; and how to seal seams TINNING AND SOLDER WIPING. Castle 1945 26min sd $38.02 671 sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 How to clean copper tubing for tinning; how flux Is applied to copper; how to tin copper tubing by hand and by dipping; how solder wiping is done; and how copper reacts to heat (vhen being tinned and solder wiped 67 1 W Welding ARC WELDING AT WORK. GE 1948 27min sd * color (More power to America) $200 671 W sh-tr Guide Produced by Raphael G. Wolff Studios The film's point is that arc welding is the most economical, strongest and lightest fabrication method for many industrial operations. Expjaina and demonstrates the three main types of arc welding: metal arc welding, atomic-hydrogen arc welding and insert arc welding DESIGN FOR ARC WELDED STRUCTURES. LincolnElec 1946 15min sd color loan 671 W tr-ad Advantages of welding building materials for sturdy construction. Color animation shows distinctly and interestingly the fundamental members of structural design, and the way in which welding permits them to be joined in various combinations FORGE WELDING. Castle 12min sd $22.15 671 W tr-ad Guide Produced by the U.S. Office of Education. Accompanying fllmstrip $1 Shows how to maintain a clean, deep, hot fire; how to heat mild steel for forging; how to upset and scarf round stock; how to make a lap weld; and how to shape and hammer refine the weld GUIDED BEND TEST. Castle 1944 17min sd $29.29 671W sh-tr-ad Guide Produced by U.S. Office of Education. Accompanying fllmstrip $1 Preparing groove weld and fillet weld test specimens for the guided bend test; how to make the test; and causes of failure In bending HOW TO WELD ALUMINUM— ARC WELDING. USBurMines 1947 lOmin sd loan 671 W sh-c-tr-ad Describes metal arc, carbon arc, and atomic hydrogen processes for welding aluminum and their uses. Proper equipment and protection of personnel are illustrated in arc welding scenes. Tht; efficiency and speed of the atomic hydrogen process also is disclosed 520