GB1435197A - Electronic counter assembly with variable counting ranges - Google Patents

Abstract

1435197 Predetermined counting H STOLL G STOLL E STOLL E STOLL J STOLL A STOLL R E STOLL and M STOLL 10 May 1973 [18 May 1972] 22313/73 Heading G4D A counting apparatus is arranged to count through a sequence of n independently adjustable series of pulses issuing an output pulse at the end of each series. A first decade counter Z 1 counts continuously from a clock input A applying pulses sequentially to the contacts 0-9 of each of n separate selector switches W. A set of n gates G0-G9 are triggered one by one by a second counter Z 2 to connect the output of respective switches to an OR-gate G10. When the count in Z 1 reaches the value set on the switch W selected by Z 2 the OR-gate G10 delivers an output pulse at C which also resets Z 1 by way of gate G12 and steps Z 2 to select the next switch W by way of gate G11. If any switch W is set to its eleventh position, U, then counter Z 2 will be stepped on by a pulse on the other input of G11 but no output pulse will appear at C. Thus a smaller number of series, each greater than 10 can be selected. The apparatus is useful to control a knitting machine; each A pulse represents a stitch while each pulse at C instructs the machine to change pattern.