Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 386
rves otherthan arcs of circles aredrawn with the pencil orruling pen by means ofcurved or irregular-shaped rulers, called irregularcurves or szueeps, Figs. 597-608. These are made ofvarious materials, wood, hard rubber or celluloid, in agreat variety of shapes. A certain number of points Note.—A… … Figs. 597 to BOB. 422 ROGERS DRAWING AND DESIGN. is first determined througii which the line is to pass,and said Hne should be first sketched in lightly,freehand. The irregular curve is then applied tothe curved line so as to embrace as many points aspossible ; only the central points of those thus…
Mechanical drawing · Machine design
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