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 349
Fig. .>t3. The mean effective pressure may also be found bym-easuring the area of the diagram, by means of aplanimeter and dividing it by the length of the dia- 578 ROGERS DRAWING AND DESIGN. … Fig. 544. gram; multiply this result by the scale oj the indi-cator spring, and the product will be the mean effec-tive pressure. Example: Find the horse power of an enginewhen L equals 4 ft.; diameter of cylinder equals 32inches, P equals 40 lbs. per sq. jn. and N equals 40per minute. H. P. _4oX 4…
Mechanical drawing · Machine design
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