Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 100
. An indicator having a different form of INDICATORS 85 pencil movement is shown in Fig. 54. In this indicator one ofthe usual movable hnks is replaced by a slot cut in a plate Gand the pencil arm has a small roller on its side which moves inthis slot. The slot is for the purpose of giving a… … Fig. 54. the drum spring is a flat coil spring placed at the base of the drum,as shown at M. Fig. 55 shows a form of indicator having the spring outside thecylinder, the piston rod being made longer to hold it. When thespring is placed inside the cylinder and used with high pressuresteam, the high…
Steam-engines
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