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 482
wing the indicator to cool. Itis in line with the piston, and is supported by two standardsconnected at the top by a cross bar, having a screw for at-taching the upper end of the spring. The lower end isconnected to the top of the piston. The piston rod andconnections are made hollow and as light… … Fig. 164american outside spring indicator 470 Steam Rngineering until it is free from the base. To prevent the piston fromturning while removing the springs insert a steel pin^ fur-nished with the indicator^ in holes in the spring base. Figure 165 shows the three-way cock for attaching theindicator…
