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 346
Fio. 538. … valve is just on the point of opening or closing,it will be at a distance equal to the outside lap,from its central position. If an arc be describedwith the center O and a radius equal to the outsidelap, 06, will be the position of the crank when thesteam is admitted, and O62 its position when…
Mechanical drawing · Machine design
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