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 328
72.3 135 1 190.7 55 i 173-8 140 1 [191-5 60 1 175-2 145 ] 192.2 65 i 176.5 150 ] [192.9 70 1 177.9 155 1 193-7 75 180 1 179.1180.3 160 ] 194.4 ROGERS DRAWING AND DESIGN. 357 SAFETY VALVE RULES. The safety valve provides for the safety of boilers,by allowing the steam to escape when its… … AC WwP Let a V the distance between the centerof valve and A, also in inches. the weight in pounds. the weight of the lever in pounds. the pressure of the steam persq. in. the area of the valve in sq. in. the weight of the valve in pounds. Fig. 516. the valve, or by a strong spring. A good…
Mechanical drawing · Machine design
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