File:A textbook on mechanical and electrical engineering (1902) (14585590288).jpg

Identifier: textbookonmechan00inte (find matches)
Title: A textbook on mechanical and electrical engineering
Year: 1902 (1900s)
Authors: International Correspondence Schools
Subjects: Mechanical drawing Mechanical engineering Electrical engineering
Publisher: Scranton : International Textbook Co.
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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JUNE25.Je93.
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-lEKv Engineer Company.served. JOHN SM/TH, CLASS N? 4529. § 16 DEVELOPMENT OF SURFACES 53 developing the triangle A £ JJ, Fig. 31, which is the correctdevelopment of the surface A E B, Fig. 29. The adjacent triangle £ B F, Fig. 31, may next be con-structed. Since B F is equal to BE, Fig. 29, an arc maybedescribed in Fig. 31 from i? as a center, with a radius BE;this arc is then intersected by an arc described from ^ as acenter, with a radius equal to the length of E F, Fig. 29,thus developing the triangle E B F, Fig. 31, which corre-sponds to the surface E B F, Fig. 29. In like manner, eachsurface of the solid is developed, due care being observedthat adjacent triangles are placed in corresponding positionsin the development. 49. Completion of the Drawing.—The completionof the drawing is made in a manner somewhat similar toparallel and radial developments: that is, the edge lines maybe indicated as in those methods, the outer edges beingdenoted by full lines and those lines on wh

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