Abstract: A new coin slot structure for coin call telephone apparatus includes photodetectors set to identify the coins inserted therein, so as to allow three kinds of coins of different value be continuously inserted into the apparatus through the slot to extend the connection time, wherein the additional coins inserted will be automatically returned.

Abstract: A coin control mechanism for use with a dispensing machine and containing a three-way adjustable price setter and a mechanical linkage to quickly change the coin control mechanism among any one of three preset prices, thus allowing for different price settings on different days. Three adjustable legs control the preinsertion position of a totalizer which calculates the cumulative total of coins inserted into the coin chute of the coin control mechanism. A three-position keyway and linkage allows an operator to quickly change the preinsertion position of the totalizer from outside of the coin control mechanism.