Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 752
wo instruments lies inthe details of construction, the gas engine indicator being Gas Engine Indicator 737 more strongly made in order to withstand the sudden shock,and higher pressure of that engine^ as compared with thesteam engine. Firms manufacturing indicators make acombined steam and gas… … Fig. 306 smaller piston is used. Fig. 306 shows a Crosby combinedgas, and steam engine indicator with the small piston inplace for gas engine work. The pencil arm is of extrastrength to withstand the shock due to the explosive press-ure exerted upon the piston. The drum is of small dia-meter and…
