Modern Engineering Practice: A Reference Library..., Volume 11
American School of Correspondence, 1906 - Engineering
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angle appear arcs base belt block bolts called center line circle complete construction curve cylinder describe desired detail determined diagram diameter dimensions direction distance divided dotted drawing drawn edge element elevation Engineering equal face figure follows front gear give given ground head height hole horizontal horizontal lines horizontal projection inches indicated intersection length letter light located lower machine measure Mechanical method motion necessary object parallel passing pencil perpendicular perspective perspective projection picture plane piece pitch placed plate position practice prism Problem projection pulley radius represent scale shade shaft shown in Fig shows side similar space square steam straight line student surface T-square tangent thread tion trace triangle true turn upper usually valve vanishing point vertical vertical line
Page 59 - The diameter of a circle is a straight line drawn through the center and terminating in the circumference. A radius is a straight line joining the center with the circumference. It has a length equal to one half the diameter. All radii (plural of radius) are equal and all diameters are equal since a diameter equals two radii. PENTAGON.
Page 59 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 62 - A regular pyramid is one whose base is a regular polygon and whose vertex lies in the perpendicular erected at the center of the base.
Page 64 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 63 - A right cylinder or a cylinder of revolution is a cylinder generated by the revolution of a rectangle about one side as an axis.
Page 63 - A cone is a solid bounded by a conical surface and a plane which cuts the conical surface. The plane is called the base and the curved surface the lateral area.
Page 7 - WILLIAM RIPPER. Professor of Mechanical Engineering in the Sheffield Technical School: Member of the Institute of Mechanical Engineers. Author of "Machine Drawing and Design," "Practical Chemistry," "Steam,
Page 116 - B, let the vertex of the cone be placed at V, and one element of the cone coincide with VA I. The length of this element is taken from the elevation A, of either contour element. All of the elements of the cone are of the same length, so when the cone is rolled each point of the base as it touches the plane will be at the same distance from the vertex. From this it follows that the development of the base will be the arc of a circle of radius equal to the length of an element. To find the length...
Page 273 - II, is the circular or circumferential pitch, and is equal to the circumference of the pitch circle divided by the number of teeth. In order to run together, two gears must have the same circular pitch.
Page 202 - If a drawing is to be traced it is a good plan to use a 311 or 4H pencil, so that the lines may be easily seen through the cloth. The tracing cloth is stretched smoothly over the pencil drawing and a little powdered chalk rubbed over it with a dry cloth, to remove the slight amount of grease or oil from the surface and make it take the ink better. The dust...