NEW GENERAL PURPOSE RELAY 



lOGl 



Fi-. 



2 4 6 8 10 12 14 16 18 20 22 24 



NUMBER OF CONTACT PAIRS 



(as used in EARLY BREAK-MAKE TRANSFERS.OR EQUIVALENT) 



31 — Power used for AJ relajs witli coils designed for least power. 



A special variety of AJ relay is provided with twentj'-four pairs of 

 make contacts as shown in Fig. 32. This relay uses four layers of wire 

 springs and a number of other special parts. As a result, it is often pos- 

 sible to use one twentj^-four make contact AJ relay rather than two 

 relays with fewer contacts on each. 



12. WIRING THE RELAYS 



Connecting wires to the wire spring relaj^ terminals presented a prob- 

 lem which was solved not only for the new Ye[a,y but by methods which 

 have become important and useful for other apparatus also The solu- 

 tion came from the invention of a tool, first proposed by H. A. 

 Miloche,'^ for quickly and easily wrapping the connecting wire to the 

 straight end of the wire spring relay terminal. 



Early suggestions for making connections to the wire springs included 

 various hooks or bonds to simulate the common flat punched terminal 

 having either a hole or iiolcli to facilitate attaching the wires. All of 

 these added some e.xpense to the manufacture of the relay. The added 

 costs were due to two factors (1) forming the wire spring ends rcfjuirod 



12 H. A. ^Miloche, "Mechanically Wrapped Connections", Bell Lab. Record, 

 .July, 1951, p. 307. 



