NERVOUS DISCHARGES 



29 



transmitter is indicated by a square with diagonal line. The 

 pipe lines connecting the transmitters into groups are indicated 

 by connecting lines on the right. Each group of connected 

 transmitters will' act as one, on a certain stream meter con- 

 trolling a hydraulic cylinder. The meters and cylinders are 

 not shown. 



In the case of figure 6 no coupling diagram is given but the 

 arrangement of the rods and connecting bell cranks is adequately 

 shown in tabular form in table III. Each key rod is represented 

 by a column and each spur rod by a row. B.C. at the intersection 

 indicates a bell crank connection, xi, X2 and X3 refer to cor- 

 responding connections in figure 6. The motor connections are 

 in the right hand column. Sn in the next column indicates a 

 transmitter. Other forms of coupling gangs are shown by means 

 of tables similar to table III. No stream diagrams are shown 

 for some of these arrangements but one could readily be con- 

 structed from each table by aid of figures 002, 003, 5 and 6. 

 We will now take up briefly each form of coupling gang, begin- 

 ning with the simplest. 



In table I is represented a converging gang which may be 

 used like that shown in figure 4 to illustrate the theory for in- 



TABLE I (Fig. 002) 

 Converging Gang 



TABLE II (Fig. 003) 

 Diverging Gang 



