Mechanical Graphics: A Second Course in Mechanical Drawing |
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Mechanical Graphics: A Second Course in Mechanical Drawing (Classic Reprint) George Halliday No preview available - 2017 |
Mechanical Graphics: A Second Course in Mechanical Drawing George Halliday No preview available - 2016 |
Mechanical Graphics: A Second Course in Mechanical Drawing (Classic Reprint) George Halliday No preview available - 2018 |
Common terms and phrases
Angle of advance angles to V.P. apex Bisect centre of gravity CHAPTER cone construction contains crank cube curve cylinder diagonal divide draw a line draw a projector Draw the plan eccentric arm ellipse engine equal in area forces acting front of V.P. given H.P. Ex height horizontal line horizontal plane horizontal trace inch high inch in length inch side inches diameter inches edge inches in front inches long inclined plane indicator diagram intersection isometric projection Join length of axis line A B Mechanical Graphics opening to steam orthographic projection parabola parallel to V.P. perpendicular perspective projection picture plane plan and elevation point g polygon position prism pyramid rectangle right angles semicircle set square shadow Show shown in Fig side of base solid square stroke tangent plane tetrahedron triangle true length valve vertical angle vertical projection vertical trace
Popular passages
Page 83 - The cycloid is traced out by a point in the circumference of a circle as the circle rolls along a straight line.
Page 84 - Cycloid. The cycloid is a curve generated by a point on the circumference of a circle which rolls on a straight line tangent to the circle.
Page 84 - An epicycloid is the curve generated by a point on the circumference of a circle that rolls in a plane on the outside of another circle.
Page 204 - ... apex equal to three-fourths of the altitude. We determine the centre of gravity of a pyramid or of a cone by passing a plane, at a distance from the base equal to one-fourth the altitude, through the body parallel to its base and by finding the centre of gravity of this section or the point where a line drawn from the centre of gravity of the base to the apex will cut it.
Page 33 - That portion of space in front of the vertical plane and above the horizontal plane is called the first angle or quadrant; that portion of space behind the vertical plane and above the horizontal...
Page 206 - ... (e) The crank is on dead center when the piston is at the end of the stroke, and is then horizontal on horizontal engines. When the piston is at the head end of the cylinder, the crank is on the " head-end dead center "; when at the other end, it is on the
Page 185 - ... to crush AB and A c, and to stretch B c ; these forces are severally proportional to A a", c c", and B b". These lines therefore measure the thrusts of AB and A c and the tension of B c. The magnitudes of these forces can be obtained by a more simple construction, thus : — Draw...
Page 112 - Thus, a' a" and a are the plan and elevation of a line at right angles to the vertical plane, and parallel to, and situated above, the horizontal plane at a distance equal to a a".
Page 182 - A force may be represented on paper by a line with an arrow-head ; the length of the line represents the magnitude...
Page 6 - We see that the first proportional multiplied by the fourth is equal to the second multiplied by the third.