Hi,
Looking over your circuit I have the following observations.
Assuming the drawing is correct, its a very complex way of trying to flash the LED's in the way you describe.
What purpose is the 74175, connected to the bit switch, serving?
The Ax/Bx inputs of the 74283 adder are linked together, so its always adding the same pair of numbers.
Its just left shifting the bit switch value, by one.?
Where is the'clk' signal coming from?
You are clocking the 74191 [bottom one] with 'A' to give a 15 divide by signal 'B' [you say, ripple clk???], which are used as 'J' and 'K' inputs to the 74109.
Can you let us know what the projects for and whats it purpose.?
Eric