Watch the Tumblers Roll
With each pull of the arm or each push of the button, the chances of winning more and more are increased as you continue to play on a slot machine. There is not a single bit of truth to any of that statement. The fact is, that each and every spin of a slot machine is a random act and there is no way of predicting when it is that the actual winning pull may occur. Yes, there are odds as to how often the winning combination will appear, but that does not mean that on the 1,437th spin, that someone is going to win every time.
It could happen on any spin and it could happen on two in a row if the machine were so inclined. This is not saying that things are rigged, but you never do know what will happen on any spin at any time.