Educational film guide ()

744 EDUCATIONAL FILM GUIDE ORTHOGRAPHIC PROJECTION— Con«n«ed sional effects that simplify explanation of the mechanics and purposes of shape description. The film begins by showing that objects, as well as planes and lines, look different from different points of view. These differences are then applied to the projection of front, top and right side views of an object. The projections are animated on three glass surfaces representing the frontal, horizontal and profile planes, each of which is shown to be parallel to the surface projected on it, and to be perpendicular to each other. When swung around on a single plane, these three projected views together are shown to represent fully the three dimensional object Correlated filmstrip of the same title Is listed in the 1948 Annual Filmstrip Guide PRINCIPAL DIMENSIONS, REFERENCE SURFACES AND TOLERANCES. Castle 1944 12min sd 522.15 744 tr Guide Produced by the U.S. OfHce of Education. Accompanying filmstrip $1 The relationship between the blueprint and a rough and finished casting Is shown; how to compare casting dimensions with blueprint specifications; how a cross section view is derived from a full view; how to use a blueprint as an aid in selecting reference surfaces from which to take other dimensions; how to Interpret tolerances; and how to use a blueprint in checking the accuracy of finished work READING A DRAWING OF A VALVE BONNET, Castle 1944 20min sd $32.16 744 tr Guide Produced by the U.S. Office of Education. Accompanying filmstrip $1 How to Interpret conventional symbols and tolerance specifications, and the conventional views and cross-sectional views shown on a blueprint of a fairly elaborate workpiece; how to use the blueprint as a guide in planning machine operation; and how to obtain dimensions not given directly on the blueprint and apply them in laying out and performing the work READING A THREE-VIEW DRAWING. Castle lOmin sd $19.28 744 sh-tr Guide Produced by the U.S. Office of Education. Accompanying filmstrip $1 Shows how to use a blueprint to visualize the object; how to Interpret a blueprint; and how to make a tool block according to specifications SECTIONAL VIEWS AND PROJECTIONS. Castle 1944 15min sd $26.43 744 sh-c-tr Guide A U.S. Ofl[lce of Education production. Accompanying filmstrip $1 Shows the different types of lines — dimension, center, cross section, and object; the projection of a sectional view; the locations and uses of finish marks; and the meanings of standard cross-section lines denoting types of materials SECTIONS. McGraw 1947 lOmin sd (Mechani* cal drawing textfilm ser) apply 744 sh-c-tr Guide Some objects have important interior details which may show as a confused mass of dotted lines on the regular exterior views. The remedy for this is shown to be the sectional views, formed by imaginary cutting away of part of the object, thereby revealing interior details and making It easier to read the drawing. The film goes on to explain various symbols used in sectioning, such as cross hatching, broken lines to indicate cutting planes, directional arrows and reference letters Correlated filmstrip of the same title Is listed in the 1948 Annual Filmstrip Guide SECTIONS AND CONVENTIONS. McGraw * 1947 15min sd (Engineering drawing textfilm ser) apply 744 sh-c-tr Begins by stating that in some cases the important interior details of an object may show as a confused mass of dotted lines on the regular exterior views. The remedy for this is shown to be the sectional view, formed by an Imaginary cutting away of part of the object, thereby revealing interior details and making it easier to read the drawing, also easier to construct the object. The meaning of special sign language used in sectioning is explained, such as cross hatching, broken lines, reference letters and directional arrows. The film then describes various types of sectional views Correlated filmstrip of the same title is listed in the 1948 Annual Filmstrip Guide SELECTION OF DIMENSIONS. McGraw 1947 * 20min sd (Engineering drawing text-film ser) apply 744 sh-c-tr Guide Introduces principles which govern the choice of dimensions. These principles are shown to be based on two factors: (1) the functional characteristics of the object, which includes consideration of the accuracy demanded and the relation of the portion to other elements of the unit or machine, and (2) the manufacturing methods used in making the object Correlated filmstrip "Dimensioning Techniques" is listed in the 1948 Annual Filmstrip Guide SHAPE DESCRIPTION: PART I. McGraw 1947 ♦ llmin sd (Mechanical drawing text-film ser) apply 744 sh-c-tr Guide Begins by demonstrating the Inadequacy of a written or spoken description or of a perspective sketch when the designer of an object wants to tell others exactly how to build it. It is then brought out that the only accurate method of conveying this information is to make several drawings showing how the object looks from difl^erent points of view. The film then describes the theory of orthographic projection, utilizing a combination of animated diagrams and animated photography of specially prepared models that provides unusual three dimensional effects Correlated filmstrip of the same title Is listed In the 1948 Annual Filmstrip Guide SHAPE DESCRIPTION: PART II. McGraw * 1947 ISmln sd (Mechanical drawing textfilm ser) apply 744 sh-c-tr Guide The step by step procedure of constructing a drawing using orthographic projection is demonstrated and reasons for each step are explained. The film follows thru on one drawing and establishes certain principles of procedure which the student can apply In making drawings of his own Correlated filmstrip of the same title is listed In the 1948 Annual Filmstrip Guide SHOP PROCEDURES. McGraw 1947 17mln sd * (Mechanical drawing text-film ser) apply 744 sh-c-tr Guide Shows how finished drawings are used as detailed instructions in every step of manufacturing. From the drafting room the drawings are seen going to the blueprinting machine to be reproduced by the dozens or hundreds and distributed to all those workmen who will have a part in making the finished product. The film then shows many of these workmen at their jobs and using blueprints — in the pattern making shop, the foundry, the forging shop, the machine shop and the assembly shop Correlated filmstrip of the same title is listed in the 1948 Annual Filmstrip Guide 540