The technical requirements for a switching circuit used to provide a direct line connection between a transmission line and a telephone, teleprinter or like communication instrument are quite stringent, particularly in public utility systems. Thus, a direct line connect circuit of this kind may be ...
11. A machine according to claim 8 having an oscillating link for reciprocating the driver bar, said link having pin means which connect the link to the driver bar and on which the driver bar is slip fitted, and in which the die block is provided with a stop for holding the punch eleme...